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Multiple Choice Questions and Answers on Class 11 Chemistry Chapter 9 Hydrogen

(1) BaCl2. xH2O is which type of hydrate and x is?
[A] H-bonded, 4
[B] Interstitial,2
[C] Interstitial,4
[D] Coordinated,2
Answer: Interstitial,2
(2) Industrially Hydrogen peroxide is prepared by which method?
[A] Electrolytic oxidation of acidified sulphate solutions
[B] Exhaustive electrolysis of water
[C] Acidifying barium peroxide
[D] Auto oxidation of 2-alkyl anthraquinols
Answer: Auto oxidation of 2-alkyl anthraquinols

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(3) A commercially marketed sample of H2O2 is:
[A] 2 V
[B] 10 V
[C] 50 V
[D] 100 V
Answer: 10 V
(4) Cation exchange resins contain ____ molecule.
[A] Large, inorganic, water-insoluble
[B] Small, inorganic, water-soluble
[C] Large, organic, water-insoluble
[D] Small, organic, water-soluble
Answer: Large, organic, water-insoluble
(5) In ice crystal structure distance between two oxygen atoms is about:
[A] Approximately equal to O-H bond length
[B] More than the double of O-H bond length
[C] Less than O-H bond length
[D] More than triple of O-H bond length
Answer: More than the double of O-H bond length
(6) Magnesium ion forms which ppt on treatment with washing soda and calcium hydroxide respectively?
[A] In both Mg(OH)2
[B] In both MgCO3
[C] MgCO3 and Mg(OH)2
[D] Mg(OH)2 and MgCO3
Answer: MgCO3 and Mg(OH)2
(7) At Atmospheric pressure ice crystallizes in:
[A] Hexagonal form
[B] Trigonal form
[C] Tetragonal form
[D] Cubic form
Answer: Hexagonal form
(8) Due to _____ with polar molecules, even covalent compounds like alcohol and carbohydrates dissolve in water. Fill in the blank:
[A] Dipole induced dipole interaction
[B] H-Bonding
[C] Van der Waal interactions
[D] London Force
Answer: H-Bonding
(9) Incorrect with respect to metallic hydrides:
[A] Metallic hydrides are hydrogen deficient.
[B] Metallic hydride retain their metallic conductivity
[C] Nickel and Actinium have different lattices from that of parent metal
[D] These hydrides conduct as efficiently as their parent metals
Answer: These hydrides conduct as efficiently as their parent metals
(10) Which of the following makes the least contribution to the total world’s water supply?
[A] River
[B] Lakes
[C] Soil moisture
[D] Atmospheric Water Vapor
Answer: River
(11) Which of the following statement is correct?
[A] All group 13 elements form electron-deficient compounds except Aluminum
[B] Dihydrogen does not produce any Pollution
[C] It produces greater energy per mole than gasoline and other fuels
[D] Lithium hydride reacts with Cl2 at moderate temperature to form Hydrochloric acid
Answer: Dihydrogen does not produce any Pollution
(12) Select the correct Statement:
[A] A mixture of CO and H2 is used for the preparation of methanoic acid
[B] Methane and steam react to give carbon dioxide and hydrogen
[C] Isotopes of hydrogen have almost the same physical property
[D] Isotopes have a difference in their rate of reactions
Answer: Isotopes have a difference in their rate of reactions
(13) Which of the following Statement is incorrect?
[A] Dihydrogen is used in the manufacture of Polyunsaturated vegetable oils
[B] The largest single of dihydrogen is in the manufacturing of Ammonia
[C] Many metals combine at high temperature with dihydrogen
[D] Hydroformylation of alkene leads to an increase in no. of carbon atoms in the chain
Answer: Dihydrogen is used in the manufacture of Polyunsaturated vegetable oils
(14) Lithium hydride reacts with aluminum chloride to give:
[A] LiCl only
[B] Aluminium Hydride
[C] Lithium Aluminium Hydride
[D] Both 1 and 3
Answer: Both 1 and 3
(15) The ionization energy of hydrogen is similar to which halogen?
[A] Fluorine
[B] Chlorine
[C] Iodine
[D] Bromine
Answer: Chlorine
(16) Single Bond energy is highest for which molecule?
[A] H-H Bond
[B] C-C Bond
[C] F-F Bond
[D] Cl-Cl Bond
Answer: H-H Bond
(17) Presently most of the industrial dihydrogen gas is prepared from?
[A] Electrolysis of water
[B] Coal
[C] Petrochemicals
[D] Electrolysis of brine
Answer: Petrochemicals
(18) Arrange the following in their increasing order of bond energy?
[A] H2, F2, D2
[B] F2, H2, D2
[C] D2, F2, H2
[D] H2, D2, F2
Answer: F2, H2, D2
(19) Internuclear distance between H2 and D2 is:
[A] More for H2
[B] More for D2
[C] Equal for both
[D] Vary with Temperature
Answer: Equal for both
(20) Catalyst used in the reaction of CO with steam is?
[A] Copper Chromate
[B] Cadmium Oxide
[C] Nickel
[D] Iron Chromate
Answer: Iron Chromate

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