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.
Q.1 Para and ortho hydrogen differ in
(a) Atomic number
(b) Atomic mass
(c) Spins of pruLoiis
(d) Number of neutrons
(c) Spins of pruLoiis
Q.2 Cavendish in 766 discovered.
(a) Nitrogen
(b) Oxygen
(c) Hydrogen
(d) Helium
(c) Hydrogen
Q.3 The reagent commonly used to determine hardness of water titrimetrically is
(a) Oxalic acid
(b) Disodium salt of EDTA
(c) Sodium citrate
(d) Sodium thiosulphate
(b) Disodium salt of EDTA
Q.4 Polyphosphates are used as water softening agents because they
(a) Form soluble complexes with an ionic species
(b) Precipitate an ionic species
(c) Form soluble complexes with cationic species
(d) Precipitate cationic species
(c) Form soluble complexes with cationic species
Q.5 Dihydrogen gas may be prepared by heating caustic soda on
(a) Cu
(b) Zn
(c) Na
(d) Ag
(b) Zn
Q.6 Hydrogen will not reduce
(a) Heated cupric oxide
(b) Heated ferric oxide
(c) Heated stannic oxide
(d) Heated aluminium oxide
(d) Heated aluminium oxide
Q.7 Hydrolysis of one mole of Peroxidic sulphuric acid produces
(a) Two moles of sulphuric acid
(b) Two moles of peroxomonosulphuric acid
(c) One mole of sulphuric acid and one mole of peroxomonosulphuric acid
(d) One mole of sulphuric acid, and one mole of peroxomonosulphuric acid and one mole of hydrogen peroxide
(c) One mole of sulphuric acid and one mole of peroxomonosulphuric acid
Q.8 During the reaction of natural gas and steam the catalyst used is
(a) Fe
(b) Zn
(c) Ni
(d) Cr
(c) Ni
Q.9 Hydrogen set free at the time of its preparation from its compound in atomic form are called ______________.
(a) Nascent Molecular Hydrogen
(b) Nascent Atomic Hydride
(c) Both (1) and (2)
(d) Nascent Hydrogen
(a) Nascent Molecular Hydrogen
Q.10 Which of the following statements is most applicable to hydrogen? It can act
(a) as a reducing agent
(b) as an oxidizing agent
(c) both as oxidizing and reducing agent
(d) neither as an oxidising agent nor as a reducing agent
(c) both as oxidizing and reducing agent
Q.11 The freezing point of heavy water is
(a) 0°C
(b) 3.8°C
(c) 4°C
(d) 1°C
(b) 3.8°C
Q.12 Which of the following hydrides are generally nonstochiometric in nature?
(a) Ionic Hydrides
(b) Molecular Hydrides
(c) Interstitial Hydrides
(d) All of the Above
(c) Interstitial Hydrides
Q.13 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
(a) 0 to 4 °C
Q.14 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
(d) All of the above
Q.15 Atomic hydrogen is called
(a) Protium
(b) Deutrium
(c) Nascent Hydrogen
(d) Tritium
(c) Nascent Hydrogen
Q.16 Tritium __________ radio active isotope.
(a) Beta-Emitting
(b) Alpha – Emitting
(c) Gamma-Emitting
(d) None of the Above
(a) Beta-Emitting
Q.17 The atomic weights of isotopes of all element are different due to different number of ____________.
(a) Protons
(b) Electrons
(c) Neutrons
(d) None of Above
(c) Neutrons
Q.18 Hydrogen has isotopes
(a) 2
(b) 3
(c) 4
(d) 5
(c) 4
Q.19 What is gram equivalent weight of hydrogen peroxide as reductant?
(a) 100
(b) 125
(c) 152
(d) None of the Above
(c) 152
Q.20 The volume of oxygen gas evolved at STP by decomposition of 0.68 g “20 volume” hydrogen peroxide is:
(a) 112 ml
(b) 224 ml
(c) 56 ml
(d) 336 ml
(b) 224 ml
Q.21 When water is dropped over sodium peroxide, the colourless gas produced is:
(a) DiNitrogen
(b) DiOxygen
(c) DiHydrogen
(d) Hydrogen Peroxide
(b) DiOxygen
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