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Important Questions From Hydrogen For NEET | Hydrogen MCQs

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Free download in PDF Class 11 Chemistry Chapter 9 Hydrogen Multiple Choice Questions and Answers for Board, JEE, NEET, AIIMS, JIPMER, IIT-JEE, AIEE and other competitive exams. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. These short solved questions or quizzes are provided by Gkseries./p>

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(1) Hardness of water may be temporary or permanent. Permanent hardness is due to the presence of
[A] Chlorides of Ca and Mg in water
[B] Sulphates of Ca and Mg in water
[C] Hydrogen carbonates of Ca and Mg in water
[D] Carbonates of alkali metals in water
Answer: A, B
(2) Which of the following statements is correct?
[A] Elements of group 15 form electron deficient hydrides.
[B] All elements of group 14 form electron precise hydrides.
[C] Electron precise hydrides have tetrahedral geometries.
[D] Electron rich hydrides can act as Lewis acids.
Answer: B, C

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(3) Which of the following statements is correct?
[A] Hydrides of group 13 act as Lewis acids.
[B] Hydrides of group 14 are electron deficient hydrides.
[C] Hydrides of group 14 act as Lewis acids.
[D] Hydrides of group 15 act as Lewis bases.
Answer: A, D
(4) Which of the following statements is correct?
[A] Metallic hydrides are deficient of hydrogen.
[B] Metallic hydrides conduct heat and electricity.
[C] Ionic hydrides do not conduct electricity in solid state.
[D] Ionic hydrides are very good conductors of electricity in solid state.
Answer: A, B, C
(5) Assertion (A) : Permanent hardness of water is removed by treatment with washing soda.

Reason (R) : Washing soda reacts with soluble magnesium and calcium sulphate to form insoluble carbonates.

[A] Statements A and R both are correct and R is the correct explanation of A.
[B] A is correct but R is not correct.
[C] A and R both are correct but R is not the correct explanation of A.
[D] A and R both are false.
Answer: Statements A and R both are correct and R is the correct explanation of A.
(6) Assertion (A) : Some metals like platinum and palladium, can be used as storage media for hydrogen.

Reason (R) : Platinum and palladium can absorb large volumes of hydrogen.

[A] Statements A and R both are correct and R is the correct explanation of A.
[B] A is correct but R is not correct.
[C] A and R both are correct but R is not the correct explanation of A.
[D] A and R both are false.
Answer: Statements A and R both are correct and R is the correct explanation of A.
(7) Dihydrogen can be prepared on a commercial scale by different methods. In its preparation by the action of steam on hydrocarbons, a mixture of CO and H2 gas is formed. It is known as ____________.
[A] Water-gas
[B] Syngas
[C] Producer gas
[D] Industrial gas
Answer: A, B
(8) Which of the following statement(s) is/are correct in the case of heavy water?
[A] Heavy water is used as a moderator in a nuclear reactor.
[B] Heavy water is more effective as a solvent than ordinary water.
[C] Heavy water is more associated than ordinary water.
[D] Heavy water has a lower boiling point than ordinary water.
Answer: A, C
(9) Which of the following statements about hydrogen are correct?
[A] Hydrogen has three isotopes of which protium is the most common.
[B] Hydrogen never acts as a cation in ionic salts.
[C] The hydrogen ion, H+, exists freely in solution.
[D] Dihydrogen does not act as a reducing agent.
Answer: A, B
(10) Some of the properties of water are described below. Which of them is/are not correct?
[A] Water is known to be a universal solvent.
[B] Hydrogen bonding is present to a large extent in liquid water.
[C] There is no hydrogen bonding in the frozen state of water.
[D] Frozen water is heavier than liquid water.
Answer: C, D
(11) The hardness of water may be temporary or permanent. Permanent hardness is due to the presence of
[A] Chlorides of Ca and Mg in water
[B] Sulphates of Ca and Mg in water
[C] Hydrogen carbonates of Ca and Mg in water
[D] Carbonates of alkali metals in water
Answer: A, B
(12) Which of the following statements is correct?
[A] Elements of group 15 form electron deficient hydrides.
[B] All elements of group 14 form electron precise hydrides.
[C] Electron precise hydrides have tetrahedral geometries.
[D] Electron rich hydrides can act as Lewis acids.
Answer: B, C
(13) Which of the following statements is correct?
[A] Hydrides of group 13 act as Lewis acids.
[B] Hydrides of group 14 are electron deficient hydrides.
[C] Hydrides of group 14 act as Lewis acids.
[D] Hydrides of group 15 act as Lewis bases.
Answer: A, D
(14) Which of the following statements is correct?
[A] Metallic hydrides are deficient of hydrogen.
[B] Metallic hydrides conduct heat and electricity.
[C] Ionic hydrides do not conduct electricity in solid-state.
[D] Ionic hydrides are very good conductors of electricity in solid-state.
Answer: A, B, C
(15) _____ is added as Stabilizer in H202.
[A] Dust
[B] Urea
[C] Zn Powder
[D] Carbamate
Answer: Urea
(16) H2O2 as an antiseptic is sold in the market as:
[A] Per-carbonate
[B] Cephalosporin
[C] Perhydrol
[D] Sodium perborate
Answer: Perhydrol
(17) Arrange in order of increasing Electrical conductance:
[A] BeH2 > TiH2 > CaH2
[B] LPG > CH4 > Octane > H2(g)
[C] CaH > TiH2 > BeH2
[D] TiH2 > CaH2 > BeH2
Answer: TiH2 > CaH2 > BeH2
(18) Arrange the following as per the order of energy released per gram:
[A] H2 (g) > CH4 > LPG > Octane
[B] LPG > CH4 > Octane > H2 (g)
[C] LPG > H2 (g) > CH4 > Octane
[D] H2 (g) > LPG > CH4 > Octane
Answer: H2 (g) > CH4 > LPG > Octane
(19) The basic Principle of hydrogen economy is:
[A] Transportation of gas in liquid form
[B] Storage in liquid form
[C] Transport in liquid form
[D] All of these
Answer: All of these
(20) On Mass basis Dihydrogen can release about how much times more energy than petrol?
[A] 4 times
[B] 10 times
[C] 3 times
[D] 30 times
Answer: 3 times

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