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MCQ Questions for Class 11 Chemistry Chapter 9 Hydrogen with Answers

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Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 9 Hydrogen with Answers Pdf free download. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. We have provided Hydrogen Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well. https://mcqquestions.guru/mcq-questions-for-class-11-chemistry-chapter-9/

Hydrogen Class 11 MCQs Questions with Answers

Hydrogen Class 11 MCQ Question 1.
Pure H2O2 is :
(a) Semi – solid
(b) Liquid
(c) Solid
(d) Gas

Answer

Answer: (b) Liquid
Explanation:
Hydrogen peroxide is the simplest kind of peroxide available (oxygen-oxygen single bond). It is a colourless liquid and is used in aqueous solution for safety reasons. It acts as a bleaching agent and is also used as a disinfectant. Concentrated hydrogen peroxide is a very reactive oxygen species and is used as a propellant in rocketry. The chemical formula for hydrogen peroxide is H2O2.

MCQ On Hydrogen Class 11 Question 2.
The freezing point of heavy water is
(a) 0°C
(b) 3.8°C
(c) 4°C
(d) 1°C

Answer

Answer: (b) 3.8°C

Hydrogen MCQ Class 11 Question 3.
H2O2 used in rocket has the concentration:
(a) 50%
(b) 90%
(c) 70%
(d) 30%

Answer

Answer: (b) 90%
Explanation:
H2O2 is used as an oxidant for rocket fuel. Usually, 90% concentration of H2O2 is used.

MCQ Of Hydrogen Class 11 Question 4.
Which of the following hydrides are generally nonstochiometric in nature?
(a) Ionic Hydrides
(b) Molecular Hydrides
(c) Interstitial Hydrides
(d) All of the Above.

Answer

Answer: (c) Interstitial Hydrides
Explanation:
Interstitial hydrides are non- stoichiometric hydrides and thus deficit in hydrogen. Transition and inner transition elements at relevant temperature absorb hydrogen into the interstices of their lattices to yield metal like hydrides.

Class 11 Hydrogen MCQ Question 5.
What is the product of the reaction of H2O2 with Cl2?
(a) O2 + HOCl
(b) HCl + O2
(c) H2O + HCl
(d) HCl + H2

Answer

Answer: (b) HCl + O2
Explanation:
H2O2 + Cl2 → 2HCl + O2

Class 11 Chemistry Hydrogen MCQ Question 6.
Water shows anomalous behavior between
(a) 0 to 4°C
(b) 0 to 5°C
(c) 0 to -4°C
(d) 4 to 0°C

Answer

Answer: (a) 0 to 4°C
Explanation:
Water show a wide range of anomalies compared to similar liquids or hydrides of other group 16 elements. One of the most talked-about anomalies is the formation of ice from liquid water and how the density changes when we cool the water.

O is a small atom and highly electronegative compared to Hydrogen. So O attracts the covalent clouds of O-H towards itself, thus making water a polar molecule. The hydrogen bonding in water molecules causes high boiling point and liquid state compared to other hydrides of group 16.

When we cool water from higher temperature, the density steadily decreases. At 4 degree C it is the highest. But below 4 degree C, The H-bonds break between the molecules and the molecules get drifted further apart, the volume increases and density decreases. The crystalline form of water is ice. At atmospheric pressure ice crystallises in the hexagonal form, but at very low temperatures it condenses to cubic form leaving gap between the structures, thus increasing the volume again.

Density of ice is less than that of water. Therefore, an ice cube floats on water. In winter season ice formed on the surface of a lake provides thermal insulation which ensures the survival of the aquatic life.

Class 11 Chemistry Chapter 9 MCQ Question 7.
Which of the following statements regarding hydrogen peroxide is/ are incorrect?
(a) As aerating agent in production of sponge rubber
(b) As an antichlor
(c) For restoring white colour of blackened lead painting
(d) All of the above

Answer

Answer: (d) All of the above
Explanation:
H2O2 show all these properties

Hydrogen Chapter Class 11 MCQ Question 8.
Atomic hydrogen is called
(a) Protium
(b) Deutrium
(c) Nascent Hydrogen
(d) Tritium

Answer

Answer: (c) Nascent Hydrogen
Explanation:
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the baryonic mass of the universe.

In everyday life on Earth, isolated hydrogen atoms (called “atomic hydrogen”) are extremely rare. Instead, a hydrogen atom tends to combine with other atoms in compounds, or with another hydrogen atom to form ordinary (diatomic) hydrogen gas, H2. “Atomic hydrogen” and “hydrogen atom”

Hydrogen MCQs With Answers Question 9.
The volume strength of 1.5 NH2O2 solution is :
(a) 4.8
(b) 5.2
(c) 8.8
(d) 8.4

Answer

Answer: (d) 8.4
Explanation:
Strength =Normality ×Equivalent Weight of H2O2
= 1.5N × 1.7gL-1 = 25.5gL-1
2H2O2 → 2H2O + O2
68g 22400 mLat STP
68 g of H2O gives = 22400 mL of O2 at STP
25.5 gH2O2 gives = 2240068 × 25.5 = 8400 mL of O2 at STP
25.5g of H2O2 is present in 1000 mL of H2O2 solution
1000 mL of H2O2 gives 8400 mL of O2 at STP
1 mL of H2O2 gives 84001000 mL of O2 at STP
= 8.4mL of O2
Hence, volume strength of 1.5NH2O2 = 8.4 volume.
Or mass of H2O2 in 1.5N solution
= Equivalent Weight of H2O2 × 1.5N
= 17 × 1.5 = 25.5 g/L
Hence, volume strength of 1.5NH2O2 solution
= 22.4 × 25.568 = 8.4

Hydrogen Class 11 MCQ Pdf Question 10.
Water gas is mixture of hydrogen H2 and
(a) CO
(b) CO2
(c) Cl2
(d) SO2

Answer

Answer: (a) CO
Explanation:
Water gas is a combustion fuel containing carbon monoxide (CO) and hydrogen gas (H2). Water gas is made by passing steam over heated hydrocarbons.

MCQ Questions For Class 11 Chemistry Chapter 9 Question 11.
Hydrogen has isotopes
(a) 2
(b) 3
(c) 4
(d) 5

Answer

Answer: (c) 4
Explanation:
Hydrogen has three main isotopes; Protium (1H), deuterium (²H) and tritium (³H). These isotopes form naturally in nature. Protium and deuterium are stable. Tritium is radioactive and has a half-life of about 12 years. Scientists have created four other hydrogen isotopes (4H to 7H), but these isotopes are very unstable and do not exist naturally.
The main isotopes of hydrogen are unique because they are the only isotopes that have a name.

Hydrogen MCQs Class 11 Question 12.
The freezing point of heavy water is
(a) 0°C
(b) 3.8°C
(c) 4°C
(d) 1°C

Answer

Answer: (b) 3.8°C

Class 11 Chemistry Chapter 9 MCQ With Answers Question 13.
Pure H2O2 is:
(a) Semi – solid
(b) Liquid
(c) Solid
(d) Gas

Answer

Answer: (b) Liquid
Explanation:
Hydrogen peroxide is the simplest kind of peroxide available (oxygen-oxygen single bond). It is a colourless liquid and is used in aqueous solution for safety reasons. It acts as a bleaching agent and is also used as a disinfectant. Concentrated hydrogen peroxide is a very reactive oxygen species and is used as a propellant in rocketry. The chemical formula for hydrogen peroxide is H2O2.

MCQs On Hydrogen Class 11 Question 14.
_________________ on water decolourises H2O2
(a) O3
(b) Acidic KMnO4 solution
(c) Black Suspension of Lead Sulphide(PbS)
(d) None of these.

Answer

Answer: (c) Black Suspension of Lead Sulphide(PbS)
Explanation:
Lead sulphide (black suspension) on reaction with hydrogen peroxide forms lead sulphate and water. Lead sulphate as well as water are colourless, therefore lead sulphite decolourises on addition of hydrogen peroxide.
PbS(s) + 4H2O2 (aq) → PbSO4 (s) + 4H2O (aq)

MCQ Questions On Hydrogen Class 11 Question 15.
What is gram equivalent weight of hydrogen peroxide as reductant?
(a) 100
(b) 125
(c) 152
(d) None of the Above

Answer

Answer: (c) 152
Explanation:
As reductant hydrogen peroxide oxidises to oxygen. H2O2 → O2
​The change in oxidation number is 2
The molar mass = 34 g
Gram equivalent weight of H2O2 = (\(\frac{34}{2}\))
​= 17 g
Equivalent weight = 152

Question 16.
Hydrogen is the most abundant element on earth after______.
(a) Oxygen
(b) Carbon
(c) Sulphur
(d) None of the Above

Answer

Answer: (a) Oxygen
Explanation:
The mass-abundance of the nine most abundant elements in the Earths crust is approximately: oxygen 46%, silicon 28%, aluminium 8.2%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium, 2.0%, and titanium 0 .61%.
Hydrogen is 0.14% on earths crust and other elements occur at less than 0.15%.

Question 17.
Atomic hydrogen is called
(a) Protium
(b) Deutrium
(c) Nascent Hydrogen
(d) Tritium

Answer

Answer: (c) Nascent Hydrogen
Explanation:
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the baryonic mass of the universe.

In everyday life on Earth, isolated hydrogen atoms (called “atomic hydrogen”) are extremely rare. Instead, a hydrogen atom tends to combine with other atoms in compounds, or with another hydrogen atom to form ordinary (diatomic) hydrogen gas, H2. “Atomic hydrogen” and “hydrogen atom”

Question 18.
Hydrogen is a good __________ agent.
(a) Oxidizing
(b) Reducing
(c) Acidic
(d) Basic

Answer

Answer: (b) Reducing
Explanation:
Hydrogen acts as a good reducing agent means, when hydrogen gas is passed over hot metallic oxides of copper, lead, iron, etc. it removes oxygen from them and thus reduces them to their corresponding metal. Let us consider the following example, in each of which metallic oxide react with hydrogen. Metallic oxide act as oxidizing agents and hydrogen acts as a reducing agent.
MCQ Questions for Class 11 Chemistry Chapter 9 Hydrogen with Answers 1

Question 19.
The volume of 10 volume H2O2 required to liberate 500 ml of O2 at S.T.P. is :
(a) 25 ml
(b) 50 ml
(c) 100 ml
(d) 125 ml

Answer

Answer: (b) 50 ml
Explanation:
As 10 ml of oxygen is obtained at STP from H2O2 = 1 ml
Therefore, 500 ml of O2 is obtained at STP = 50 ml

Question 20.
Hydrogen is most __________ element in the universe.
(a) Abundant
(b) None
(c) Both
(d) Consumer

Answer

Answer: (a) Abundant
Explanation:
Hydrogen is considered as the most common and abundant element. The element Hydrogen has only one proton and one electron and is the only element which has no neutrons. Therefore it is considered as the simplest element in the universe and gives a valid reason for it to be the most abundant and common element in the universe. As per estimation from the Jefferson Lab, approximately 90 percent of the visible universe is framed by Hydrogen proving that being in the simplest form, this element is the most common and abundant element in the universe.

We hope the given NCERT MCQ Questions for Class 11 Chemistry Chapter 9 Hydrogen with Answers Pdf free download will help you. If you have any queries regarding CBSE Class 11 Chemistry Hydrogen MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

MCQ Questions for Class 11 Chemistry Chapter 8 Redox Reactions with Answers

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Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 8 Redox Reactions with Answers Pdf free download. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. We have provided Redox Reactions Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well. https://mcqquestions.guru/mcq-questions-for-class-11-chemistry-chapter-8/

Redox Reactions Class 11 MCQs Questions with Answers

Redox Reaction Class 11 MCQ Question 1.
The oxidation number of Cl in Cl2O7 is
(a) + 7
(b) + 5
(c) + 3
(d) – 7

Answer

Answer: (a) + 7
Explanation:
Cl show different oxidation state as -1 to +7 due to vacant d orbital. As oxygen is more electronegative than Cl. Oxygen size is small hence its more electronegative and show -2 oxidation states.
Here Cl2O7 then equation is: 2x + 7 × (-2) = 0
x = +7 hence oxidation state of Cl is +7. I think you get your answer how to find oxidation state.

MCQ On Redox Reaction Class 11 Question 2.
What is known as Autooxidation?
(a) Formation of H2O by the oxidation of H2O2.
(b) Formation of H2O2 by the oxidation of H2O.
(c) Both (1) and (2) are true
(d) None of the above

Answer

Answer: (b) Formation of H2O2 by the oxidation of H2O.
Explanation:
Autoxidation is any oxidation that occurs in presence of oxygen. The term is usually used to describe the degradation of organic compounds in air (as a source of oxygen). Autoxidation produces hydroperoxides and cyclic organic peroxides. These species can react further to form many products. The process is relevant to many phenomena including aging, paint, and spoilage of foods, degradation of petrochemicals, and the industrial production of chemicals. Autoxidation is important because it is a useful reaction for converting compounds to oxygenated derivatives, and also because it occurs in situations where it is not desired (as in the destructive cracking of the rubber in automobile tires or in rancidification).

Water automatically gets oxidised to hydrogen peroxide.

MCQ Of Redox Reaction Class 11 Question 3.
The tendency of an electrode to lose electrons is known as
(a) Electrode Potential
(b) Reduction Potential
(c) Oxidation Potential
(d) E.M.F.

Answer

Answer: (c) Oxidation Potential
Explanation:
The magnitude of the electrode potential of a metal is a measure of its relative tendency to lose or gain electrons. i.e., it is a measure of the relative tendency to undergo oxidation (loss of electrons) or reduction (gain of electrons).
M → Mn+ + ne– (oxidation potential)
Mn+ + ne– → M (reduction potential)

Class 11 Chemistry Redox Reaction MCQ Question 4.
If equal volumes of 1M KMnO4 and 1M K2Cr2O7 solutions are allowed to oxidize Fe2+ in acidic medium. The amount of iron oxidized will be:
(a) More with KMnO2
(b) More with K2Cr2O7
(c) Equal with both oxidising agents
(d) Cannot be determined

Answer

Answer: (b) More with K2Cr2O7
Explanation:
The reason due to which the amount of Fe oxidised will be more with ​K2Cr2O7 is:
the change in the oxidation state (or number) or n factor is greater with KMnO4
Also, ​K2Cr2O7 is a very strong oxidising agent and holds the ability to take the electrons but ​KMnO4 is more stronger than ​K2Cr2O7.

Redox Reaction MCQ Class 11 Question 5.
Which of the following processes does not involve either oxidation or reduction?
(a) Formation of slaked lime from quick lime
(b) Heating Mercuric Oxide
(c) Formation of Manganese Chloride from Manganese oxide
(d) Formation of Zinc from Zinc blende

Answer

Answer: (a) Formation of slaked lime from quick lime
Explanation:
Here, in this reaction
CaO + H2​O →Ca(OH)2
Oxidation number doesn’t change so its not a redox reaction.

Class 11 Redox Reaction MCQ Question 6.
One mole of N2H4 loses ten moles of electrons to form a new compound A. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in A? (There is no change in the oxidation state of hydrogen.)
(a) -1
(b) -3
(c) +3
(d) +5

Answer

Answer: (c) +3
Explanation:
First to find oxidation number of Nitrogen in N2H4
Oxidation number of H = +1
Let oxidation number of nitrogen be x
2x + 4(1) = 0
2x = -4
x = -2
Each nitrogen atom has -2 oxidation number. So taken both nitrogen atoms in account gives oxidation number -4.
Change in oxidation number of nitrogen on losing 10 mol of electrons (considering no change in oxidation number of hydrogen atoms)
-4 – (-10) = +6
Therefore, oxidation number of 2 nitrogen atoms in compound Y is +6. Hence, oxidation number of each nitrogen atom will be +3 in new compound Y.

Class 11 Chemistry Chapter 8 MCQ Question 7.
How many millilitres of 0.5 M H2SO4 are needed to dissolve 0.5 g of copper(II)carbonate?
(a) 6.01
(b) 4.5
(c) 8.1
(d) 11.1

Answer

Answer: (c) 8.1
Explanation:
The volume can be calculated :
N1V1 = N2V2
N1 = Normality of H2SO4 = 0.5 × 2 = 1 N
V1 = Volume of H2SO4
Molar mass of copper(II) carbonate = 123.5 g
N2 = Normality of copper (II) carbonate = (0.5×2)/(123.5) N
V2 = Volume of copper (II) carbonate = 1000 mL
So, after applying the formula,
1 × V1 = (0.5×2)/(123.5)×1000
Hence, V1 = 8.09 mL
= approx. 8.1 mL

Redox Reaction Class 11 MCQ Pdf Question 8.
The oxidation state of Cr in Cr (CO)6 is
(a) 0
(b) 2
(c) 2
(d) 6

Answer

Answer: (a) 0
Explanation:
CO (carbonyl) is a neutral ligand, hence oxidation state of Cr in Cr (CO)6 is zero

Redox Reactions Class 11 MCQ Question 9.
Which of the following processes does not involve oxidation of iron?
(a) Formation of Fe(CO)5 from Fe.
(b) Liberation of H2 from steam by iron at high temperature.
(c) Rusting of iron sheets.
(d) Decolourisation of blue CuSO4 solution by iron.

Answer

Answer: (a) Formation of Fe(CO)5 from Fe.
Explanation:
Oxidation number of Fe in Fe(CO)5 is zero.
In both Fe and Fe(CO)5, the oxidation state of iron is zero.
3Fe + 4H2O → Fe3O4 + 4H2
team
rusting
Fe → Fe2O3.xH2O
(+3)
CuSO4(aq) + Fe (s) → FeSO4(aq) + Cu(s)
(0) (+2)

MCQs On Redox Reaction Class 11 Question 10.
The number of moles of KMnO4 reduced by one mole of KI in alkaline medium is
(a) One
(b) Two
(c) Five
(d) One fifth.

Answer

Answer: (b) Two
Explanation:
In alkaline medium the reduction of KMnO4 with KI will takes place as
2 KMnO4 + H2O → 2 KOH + 2 MnO2
KI + 3[O] → KIO3
Hence the overall reaction is
KI + 2KMnO4 + H2O → KIO3 + 2 KOH + 2 MnO2
So, one mole of KI will reduced two moles of KMnO4

MCQ Questions For Class 11 Chemistry Chapter 8 Question 11.
Which of the following reactions does not involve either oxidation or reduction?
(a) VO2+ → V2O3
(b) Na → Na+
(c) CrO2-4 → Cr2O2-7
(d) Zn2+ →Zn

Answer

Answer: (c) CrO2-4 → Cr2O2-7
Explanation:
In VO2+ →V2​O3, V is reduced from +4 to +3 oxidation state.
In Na → Na2+, Na is oxidised from to +1 oxidation state.
In CrO4-2​ → Cr2O7-2, Cr remains in same oxidation state +6.
In Zn+2 → Zn, Zn is reduced from +2 to 0 oxidation state.

Redox Reaction Class 11 MCQs Question 12.
KMnO4​ reacts with oxalic acid according to the equation 2MnO4–​ + 5C2​O4​2-​ + 16H+ → 2Mn2+​ +10CO2​ + 8H2​O Here 20 mL of 0.1 M KMnO4​ is equivalent to
(a) 50 mL of 0.5 M C2H2O4
(b) 20 mL of 0.1 M C2H2O4
(c) 20 mL of 0.5 M C2H2O4
(d) 50 mL of 0.1 M C2H2O4

Answer

Answer: (d) 50 mL of 0.1 M C2H2O4
Explanation:
2MnO4– + 5C2O42- + 16H+ → 2Mn2+ + 10CO2 + 8H2O
Therefore, 2 moles of MNO4– equivalent to 5 moles of C2O42-
20 mL of 0.1 M KMnO4 = 2 moles of KMnO4
Also, 50 mL of 0.1 M C2H2O4 equivalent to 5 mol of C2O42-
Therefore, these are equivalent.

Ch 8 Chemistry Class 11 MCQ Question 13.
One mole of N2H4 loses ten moles of electrons to form a new compound A. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in A? (There is no change in the oxidation state of hydrogen.)
(a) -1
(b) -3
(c) +3
(d) +5

Answer

Answer: (c) +3
Explanation:
First to find oxidation number of Nitrogen in N2H4
Oxidation number of H = +1
Let oxidation number of nitrogen be x
2x + 4(1) = 0
2x = -4
x = -2
Each nitrogen atom has -2 oxidation number. So taken both nitrogen atoms in account gives oxidation number -4.
Change in oxidation number of nitrogen on losing 10 mol of electrons (considering no change in oxidation number of hydrogen atoms)
-4 – (-10) = +6
Therefore, oxidation number of 2 nitrogen atoms in compound Y is +6. Hence, oxidation number of each nitrogen atom will be +3 in new compound Y.

MCQs Of Redox Reaction Class 11 Question 14.
What is n-factor?
(a) Equal to product of Number of moles of electrons when Lost or gained by one mole of reductant or oxidant
(b) When Number of moles of electrons Lost or gained by one mole of reductant or oxidant is not same.
(c) Equal to Number of moles of electrons Lost or gained by one mole of reductant or oxidant
(d) None of the above

Answer

Answer: (c) Equal to Number of moles of electrons Lost or gained by one mole of reductant or oxidant.
Explanation:
For redox reaction it is considered as change in their oxidation number or change in their reduction number in both side of a chemical reaction.

Class 11 Chemistry Chapter 8 MCQ With Answers Question 15.
The oxidation number of Mn is maximum in
(a) MnO2
(b) K2MnO4
(c) Mn3O4
(d) KMnO4.

Answer

Answer: (d) KMnO4.
Explanation:
The electronic configuration of Mn is:
Mn(25) = [Ar]3d5 4s2, 4p0
In excited state, it can lose its all 7 electrons.
Hence, maximum oxidation sate exhibited by Mn is +7 which is in KMnO4.

Question 16:
The oxidation process involves
(a) Increase in oxidation number
(b) Decrease in oxidation number
(c) No change in oxidation number
(d) none of the above

Answer

Answer: (a) Increase in oxidation number
Explanation:
Oxidation process Involves:-
Addition of O2 or electronegative element
Removal of H/electropositive element
Loss of electrons
Increase in oxidation number

Question 17.
Metals generally react with dilute acids to produce hydrogen gas. Which one of the following metals does not react with dilute hydrochloric acid?
(a) Copper
(b) Magnesium
(c) Iron
(d) Silver

Answer

Answer: (b) Magnesium
Explanation:
Most of the metals such as Al, Cu, Fe etc. reacts with dilute acids to produce hydrogen gas but magnesium is an exception. Magnesium being an active metal liberates dihydrogen gas as it is allowed to react with dilute HCl. Thus all the given metals react with dilute acids.
Mg + 2HCl → MgCl2 + H2

Question 18.
The oxidation number of Xe in BaXeO6 is
(a) 8
(b) 6
(c) 4
(d) 10

Answer

Answer: (d) 10
Explanation:
Oxidation state of Ba in general = +2 and of O = −2
Applying formula, Sum of total oxidation state of all atoms = Overall charge on the compound.
Let oxidation state of Xe in BaXeO6 be x.
2 + x + 6(−2) = 0,
x = 10
But oxidation state 10 is not possible for Xe. In this case the oxidation state of Xe is equal to maximum possible oxidation state for Xe = +8.

Question 19.
The colourless solution of silver nitrate slowly turns blue on adding copper chips to it because of
(a) Dissolution of Copper
(b) Oxidation of Ag+ → Ag
(c) Reduction of Cu2+ ions
(d) Oxidation of Cu atoms.

Answer

Answer: (d) Oxidation of Cu atoms.
Explanation:
When copper turnings are added to silver nitrate solution, the solution becomes brown in color after sometime because copper is more reactive than silver so it displaces silver from silver nitrate solution and form copper nitrate solution.

Question 20.
A standard reduction electrode potentials of four metals are A = -0.250 V, B = -0.140 V, C = -0.126 V, D = -0.402 V The metal that displaces A from its aqueous solution is:
(a) A
(b) B
(c) C
(d) D

Answer

Answer: (d) D
Explanation:
Reduction potential of D is minimum i.e. −0.402 V. Thus oxidation potential of D is maximum i.e. to +0.402 V. D can oxidise itself and reduce other.
The aqueous solution A will be present in its ionic form and can be reduced by D as its reduction potential is higher than D.
Thus D can replace A from its Aqueous solution.

We hope the given NCERT MCQ Questions for Class 11 Chemistry Chapter 8 Redox Reactions with Answers Pdf free download will help you. If you have any queries regarding CBSE Class 11 Chemistry Redox Reactions MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

We’re Not Afraid to Die… If We Can All Be Together Class 11 MCQ Questions with Answers English Chapter 2

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Check the below NCERT MCQ Questions for Class 11 English Hornbill Chapter 2 We’re Not Afraid to Die… If We Can All Be Together with Answers Pdf free download. MCQ Questions for Class 11 English with Answers were prepared based on the latest exam pattern. We have provided We’re Not Afraid to Die… If We Can All Be Together Class 11 English MCQs Questions with Answers to help students understand the concept very well. https://mcqquestions.guru/were-not-afraid-to-die-if-we-can-all-be-together-class-11-mcq-questions/

MCQ Questions for Class 11 English Hornbill Chapter 2 We’re Not Afraid to Die… If We Can All Be Together with Answers

We Are Not Afraid to Die MCQ Class 11 Question 1.
What happened when the author’s head smashed into the wheel?
(a) he was hurt but steady
(b) he flew overboard sinking below the waves
(c) he was not hurt
(d) he gained control immediately

Answer

Answer: (b) he flew overboard sinking below the waves

We’re Not Afraid to Die MCQ Class 11 Question 2.
How long did they take for the ship’s testing and fitting?
(a) months
(b) few days
(c) 2 years
(d) few weeks

Answer

Answer: (a) months

We Are Not Afraid to Die Class 11 MCQ Questions Question 3.
When did they reach lle Amsterdam?
(a) around 6 pm in the evening
(b) never reached there
(c) at 11 in the next morning
(d) they decided to take different route

Answer

Answer: (a) around 6 pm in the evening

We Are Not Afraid to Die Class 11 MCQ Chapter 2 Question 4.
What was their first meal in two days?
(a) Meatloaves
(b) bread and milk
(c) noodles
(d) corned beef and cracker biscuits

Answer

Answer: (d) corned beef and cracker biscuits

MCQ Of We’re Not Afraid to Die Class 11 Question 5.
What happened after the hand pumps started to block up with the debris floating around the cabins?
(a) the author connected an electric-pump to an out-pipe
(b) by taking out water with the help of bucket
(c) by repairing hand pump
(d) the author found another hand pump

Answer

Answer: (a) the author connected an electric-pump to an out-pipe

We’re Not Afraid to Die Class 11 MCQ Question 6.
What was the age of Suzanne and Jonathan?
(a) 8 & 9 years old
(b) 7 & 6 years old
(c) 10 & 7 years old
(d) 4 years & 6 years

Answer

Answer: (b) 7 & 6 years old

MCQ We Are Not Afraid to Die Class 11 Question 7.
What was the condition of the ship?
(a) Broken timbers, starboard side bulged inwards; clothes, crockery, charts, tins and toys sloshed
(b) There personal belongings were missing
(c) water filled in every room and their clothes were missing
(d) Can’t say

Answer

Answer: (a) Broken timbers, starboard side bulged inwards; clothes, crockery, charts, tins and toys sloshed

Class 11 English Chapter 2 MCQ Question 8.
What happened to the author’s body when he managed to reach the deck?
(a) his head smashed again
(b) his left ribs cracked; mouth filled with blood and broken teeth
(c) he broke his leg
(d) his broke his left hand

Answer

Answer: (b) his left ribs cracked; mouth filled with blood and broken teeth

Class 11 We’re Not Afraid to Die MCQ Question 9.
Why did the author accept his approaching death?
A Pirates had attacked the ship
B because he was injured by the explosion
C he was thrown in the sea
D he was stabbed

Answer

Answer: A Pirates had attacked the ship

MCQs Of We’re Not Afraid to Die Chapter 2 Question 10.
What happened after the first indication of the disaster?
(a) a wave appeared vertical and almost twice the height of other waves
(b) it broke the ship from inside
(c) the ship turned upside down
(d) it didn’t affect the ship

Answer

Answer: (a) a wave appeared vertical and almost twice the height of other waves

We Are Not Afraid to Die MCQ Questions With Answers Question 11.
What did they do to slow down the boat in the storm?
(a) Stopped sailing
(b) dropped the storm jib and lashed a heavy mooring rope
(c) just dropped the storm jib
(d) did nothing and waited for storm to calm down

Answer

Answer: (b) dropped the storm jib and lashed a heavy mooring rope

Class 11 English Chapter 2 MCQ Questions Question 12.
Why did the author hire the two crewmen?
(a) to take rest from long the voyage
(b) to help tackle one of the world’s roughest seas, the southern Indian Ocean
(c) because he could no longer sail the ship
(d) he wanted to spend some time with his family

Answer

Answer: (b) to help tackle one of the world’s roughest seas, the southern Indian Ocean

We hope the given NCERT MCQ Questions for Class 11 English Hornbill Chapter 2 We’re Not Afraid to Die… If We Can All Be Together with Answers Pdf free download will help you. If you have any queries regarding CBSE Class 11 English We’re Not Afraid to Die… If We Can All Be Together MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

MCQ Questions for Class 11 Biology Chapter 22 Chemical Coordination and Integration with Answers

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Check the below NCERT MCQ Questions for Class 11 Biology Chapter 22 Chemical Coordination and Integration with Answers Pdf free download. MCQ Questions for Class 11 Biology with Answers were prepared based on the latest exam pattern. We have provided Chemical Coordination and Integration Class 11 Biology MCQs Questions with Answers to help students understand the concept very well. https://mcqquestions.guru/mcq-questions-for-class-11-biology-chapter-22/

Chemical Coordination and Integration Class 11 MCQs Questions with Answers

Chemical Coordination And Integration MCQ Class 11 Question 1.
Which of the following is an emergency hormone?
(a) Norepinephrine
(b) Androgen
(c) Cortisol
(d) FSH

Answer

Answer: (a) Norepinephrine
Explanation:
Adrenaline (epinephrine) and noradrenaline (norepinephrine) are called as catecholamines.
These hormones are secreted in response to stress and during emergency. So these are called emergency hormones or hormones of flight and fight.

Class 11 Biology Chapter 22 MCQ Question 2.
Secretin causes stimulation of
(a) water
(b) bile juice
(c) gastric secretion
(d) pepsinogen

Answer

Answer: (a) water
Explanation:
Secretin acts on the exocrine pancreas and stimulates secretion of water and bicarbonate ions.

MCQ On Chemical Coordination And Integration Class 11 Question 3.
Match the columns.
1. PRL – A. Pigmentation of skin
2. LH – B. Steriod hormones
3. ACTH – C. Formation of milk
4. MSH – D. Gonadal activity
(a) 1-C, 2-D, 3-B, 4-A
(b) 1-C, 2-D, 3A, 4-B
(c) 1-D, 2-C, 3-B, 4-A
(d) 1-B, 2-C, 3-D, 4-A

Answer

Answer: (a) 1-C, 2-D, 3-B, 4-A
Explanation:
Column I shows the names of hormones and column II shows the functions of the hormones.

Chemical Coordination And Integration Class 11 MCQ Question 4.
In adults, insufficient thyroxine can lead to ______.
(a) Goiter
(b) Tetany
(c) Cretinism
(d) Myxedema

Answer

Answer: (d) Myxedema

Chemical Control And Coordination MCQ Class 11 Question 5.
In the body, both the blood sodium and potassium levels are regulated by _______.
(a) Pheromones
(b) Aldosterone
(c) Cortisol
(d) Androgens

Answer

Answer: (b) Aldosterone

Chemical Control And Coordination MCQ Questions Question 6.
Chemical name of T4 is
(a) Tetradiodothyronine
(b) Tridiodothyronine
(c) Tetraiodothyronine
(d) Triiodothyronine

Answer

Answer: (c) Tetraiodothyronine
Explanation:
Chemical name of T4 is tetraiodothyronine.
Chemicl name of T3 is triiodothyronine.

MCQ On Chemical Coordination And Integration Class 11 Question 7.
Anabolic steroids are ______ versions of testosterone.
(a) Effective
(b) Synthetic
(c) Natural
(d) Ineffective

Answer

Answer: (b) Synthetic

Chemical Coordination And Integration MCQ Pdf Question 8.
Which of the following acts on bones?
(a) Melatonin
(b) Triiodothyronine
(c) GH
(d) Parathyroid

Answer

Answer: (d) Parathyroid
Explanation:
Parathyroid hormone acts on bones and stimulates the process of bone resorption.

MCQ Of Chemical Coordination And Integration Chapter 22 Question 9.
Glucagon hormone is secreted by the ______.
(a) Thyroid gland
(b) Adrenal gland
(c) Pituitary gland
(d) Pancreas

Answer

Answer: (d) Pancreas

MCQs On Chemical Coordination And Integration Class 11 Question 10.
Which one of the followings are male sex hormones?
(a) Insulins
(b) Aldosterones
(c) Androgens
(d) Pheromones

Answer

Answer: (c) Androgens

Class 11 Chemical Coordination And Integration MCQs Question 11.
Choose the incorrect statement.
(a) Hormones are non-nutrient chemicals.
(b) Exocrine glands are ductless glands.
(c) Invertebrates have simple endocrine system.
(d) All of the above statements are incorrect.

Answer

Answer: (b) Exocrine glands are ductless glands.
Explanation:
Endocrine glands lacks ducts and are called as ductless glands.

MCQ Questions For Class 11 Biology Chapter 22 Question 12.
Endemic goitre is a state of
(a) Increased thyroid function
(b) Normal thyroid function
(c) Decreased thyroid function
(d) Moderate thyroid function

Answer

Answer: (c) Decreased thyroid function

Chemical Coordination And Integration Questions And Answers Question 13.
Match the columns.
1. PRL – A. Pigmentation of skin
2. LH – B. Steriod hormones
3. ACTH – C. Formation of milk
4. MSH – D. Gonadal activity
(a) 1-C, 2-D, 3-B, 4-A
(b) 1-C, 2-D, 3-A, 4-B
(c) 1-D, 2-C, 3-B, 4-A
(d) 1-B, 2-C, 3-D, 4-A

Answer

Answer: (a) 1-C, 2-D, 3-B, 4-A
Explanation:
Column I shows the names of hormones and column II shows the functions of the hormones.

Question 14.
PTH is called as hypercalcemic hormone because it leads to the
(a) absorption of CaCO3 from the digested food
(b) reabsorption of water from renal tubules
(c) increasing blood calcium levels
(d) maintainence ion balance in blood

Answer

Answer: (c) increasing blood calcium levels
Explanation:
This is called so because PTH stimulates the reabsorption of calcium by the renal tubules and increases calcium absorption from the digested food.

Question 15.
Corpus luteum secretes
(a) progesterone
(b) estrogen
(c) glucagon
(d) vasopressin

Answer

Answer: (a) progesterone
Explanation:
After ovulation, ruptured follicle gets converted to corpus luteum which secretes progesterone.

Question 16.
In adults, insufficient thyroxine can lead to ______.
(a) Goiter
(b) Tetany
(c) Cretinism
(d) Myxedema

Answer

Answer: (d) Myxedema

Question 17.
In children, hypothyroidism (underactive thyroid gland) can lead to ______
(a) Goiter
(b) Acromegaly
(c) Cretinism
(d) Myxedema

Answer

Answer: (c) Cretinism

Question 18.
Diurnal rhythm of the body is maintained by
(a) melatonin
(b) isthmus
(c) PTH
(d) norepinephrine

Answer

Answer: (a) melatonin
Explanation:
Pineal gland secretes melatonin.
It plays a very important role in the regulation of a 24-hour (diurnal) rhythm of our body.

Question 19.
Which hormone inhibits the release of growth hormone?
(a) Insulin
(b) Gonadotrophin
(c) Somatostatin
(d) Thymosin

Answer

Answer: (c) Somatostatin
Explanation:
Hypothalamus produces two kinds of hormones: releasing hormone and inhibiting hormones.
GnRH is releasing hormone which stimulates pituitary synthesis.
Somatostatin inhibits the release of GH from the pituitary.

Question 20.
Which of the following is essential for thyroid gland?
(a) NaCl
(b) I3
(c) CaCO2
(d) H2CO3

Answer

Answer: (b) I3
Explanation:
Iodine is essential for thyroid gland.

We hope the given NCERT MCQ Questions for Class 11 Biology Chapter 22 Chemical Coordination and Integration with Answers Pdf free download will help you. If you have any queries regarding CBSE Class 11 Biology Chemical Coordination and Integration MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

MCQ Questions for Class 11 Biology Chapter 21 Neural Control and Coordination with Answers

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Check the below NCERT MCQ Questions for Class 11 Biology Chapter 21 Neural Control and Coordination with Answers Pdf free download. MCQ Questions for Class 11 Biology with Answers were prepared based on the latest exam pattern. We have provided Neural Control and Coordination Class 11 Biology MCQs Questions with Answers to help students understand the concept very well. https://mcqquestions.guru/mcq-questions-for-class-11-biology-chapter-21/

Neural Control and Coordination Class 11 MCQs Questions with Answers

Neural Control And Coordination MCQ Question 1.
Which one of the followings is the function of parasympathetic nervous system?
(a) Stimulates oil and sweat glands in the skin
(b) Pupil constriction
(c) Acceleration of heart beat
(d) Contraction of hair muscles

Answer

Answer: (b) Pupil constriction

Neural Control And Coordination Class 11 MCQ Question 2.
During resting state, fluid outside axon contains
(a) low concentration of K+
(b) low concentration of Na+
(c) low concentration of Cl–
(d) high concentration of Cl–

Answer

Answer: (a) low concentration of K+
Explanation:
During resting state (when neuron is not conducting any impulse), axoplasm inside the axon contains high concentration of K+
The fluid outside axon contains low concentration of K+.

MCQ On Neural Control And Coordination Class 11 Question 3.
The basic cyclic pattern of inspiration and expiration are established by a respiratory center within the ______.
(a) Cerebellum
(b) Medulla oblongata
(c) Cerebral cortex
(d) Thalamus

Answer

Answer: (b) Medulla oblongata

Class 11 Biology Chapter 21 MCQ Question 4.
The cutaneous plexus and the papillary plexus consist of
(a) Specialized cells for cutaneous sensations
(b) A network of arteries to provide dermal supply
(c) A network of nerves to provide dermal sensation
(d) Gland cells that release cutaneous secretions

Answer

Answer: (c) A network of nerves to provide dermal sensation

MCQ On Neural Control And Coordination Class 11 Question 5.
The generation of excitation-contraction coupling involves all the following events except
(a) Generation of end-plate potential
(b) Release of calcium from troponin
(c) Formation of cross-linkages between actin and myosin
(d) Hydrolysis of ATP to ADP

Answer

Answer: (b) Release of calcium from troponin

Neural Control And Coordination MCQs Class 11 Question 6.
Which portion of the brain is responsible for various emotions such as pleasure, fear, and happiness?
(a) Thalamus
(b) Reticular formation
(c) Hypothalamus
(d) Limbic system

Answer

Answer: (d) Limbic system

MCQs On Neural Control And Coordination Question 7.
Vestibular apparatus is made up of three semi circular canals. These canals lies at ____ degree angle to each other.
(a) 30
(b) 45
(c) 60
(d) 90

Answer

Answer: (d) 90
Explanation:
Semicircular canals lies at right angle to each other.

MCQ Of Neural Control And Coordination Class 11 Question 8.
At a neuromuscular junction, synaptic vesicles discharge ______.
(a) Acetylcholine
(b) Epinephrine
(c) Adrenaline
(d) None of these

Answer

Answer: (a) Acetylcholine

MCQ Questions On Neural Control And Coordination Question 9.
There are ______ pairs of cranial nerves arising from the brain.
(a) 8
(b) 12
(c) 18
(d) 25

Answer

Answer: (b) 12

Neural Control And Coordination MCQ Pdf Class 11 Question 10.
When a neuron is in resting state i.e. not conducting any impulse, the axonal membrane is
(a) Comparatively more permeable to K+ ions and nearly impermeable to Na+ ions
(b) Comparatively more permeable to Na+ ions and nearly impermeable to K+ ions
(c) Equally permeable to both Na+ and K+ ions
(d) Impermeable to both Na+ and K+ ions

Answer

Answer: (a) Comparatively more permeable to K+ ions and nearly impermeable to Na+ ions

Class 11 Neural Control And Coordination MCQ Question 11.
Which one of the following is the correct statement regarding the particular psychotropic drug specified?
(a) Barbiturates cause relaxation and temporary euphoria
(b) Hashish causes after thought perceptions and hallucinations
(c) Opium stimulates nervous system and causes hallucinations
(d) Morphine leads to delusions and disturbed emotions

Answer

Answer: (b) Hashish causes after thought perceptions and hallucinations

Class 11 Biology Chapter 21 Question 12.
The function of vagus nerve innervating the heart is to
(a) Initiate the heart beat
(b) Reduce the heart beat
(c) Accelerate the heart beat
(d) Maintain constant heart beat

Answer

Answer: (b) Reduce the heart beat

MCQ On Neural Control And Coordination Pdf Class 11 Question 13.
Which of the following nerves is the largest of all the cranial nerves?
(a) Abducens nerve
(b) Oculomotor nerve
(c) Olfactory nerve
(d) Trigeminal nerve

Answer

Answer: (d) Trigeminal nerve

Neural Control And Coordination MCQ Class 11 Question 14.
Which of the following is not related to the autonomic nervous system?
(a) Peristalsis
(b) Digestion
(c) Excretion
(d) Memory and learning

Answer

Answer: (d) Memory and learning

Class 11 MCQ Questions Biology Chapter 21 Question 15.
Functions of smooth muscles, cardiac muscles, organs, and glands are regulated by ______ system.
(a) Parasympathetic
(b) Sympathetic
(c) Central nervous
(d) Autonomic

Answer

Answer: (d) Autonomic

Neural Control And Coordination Questions Chapter 21 Question 16.
Which neuroglia cells produce a fatty insulating material called myelin?
(a) Satellite cells
(b) Schwann cells
(c) Both (A) and (B)
(d) Neither (A) nor (B)

Answer

Answer: (b) Schwann cells

Question 17.
Which layer is in contact with brain tissues?
(a) Piamater
(b) Arachnoid
(c) Duramater
(d) Piamater and Arachnoid

Answer

Answer: (a) Piamater
Explanation:
Brain is covered by cranial meninges.
1) Duramater (outer)
2) Arachnoid (middle)
3) Piamater (inner)- in contact with brain tissues)

Question 18.
The thin and convoluted outer layer of gray matter that covers the cerebral hemispheres is
(a) Medulla oblongata
(b) Thalamus
(c) Cerebral cortex
(d) Meninges

Answer

Answer: (c) Cerebral cortex

Question 19.
Find the odd one.
(a) Schwann cells
(b) Nissl s granules
(c) nephrons
(d) synaptic knob

Answer

Answer: (c) nephrons
Explanation:
Schwann cells, Nissl s granules and synaptic knobs are the parts of neurons.

Question 20.
Select the correct statement from the ones given below
(a) Cocaine is given to patients after surgery as it stimulates recovery
(b) Barbiturates when given to criminals make them tell the truth
(c) Morphine is often given to persons who have undergone surgery as a pain killer
(d) Chewing tobacco lowers blood pressure and heart rate

Answer

Answer: (c) Morphine is often given to persons who have undergone surgery as a pain killer

We hope the given NCERT MCQ Questions for Class 11 Biology Chapter 21 Neural Control and Coordination with Answers Pdf free download will help you. If you have any queries regarding CBSE Class 11 Biology Neural Control and Coordination MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.