JEE Questions for Chemistry Hydrogen Quiz 2 - MCQExams.com

Heavy water is represented as
  • H218O
  • D2O
  • D218O
  • H2O at 4°C
Which one of the following is used for reviving the exhausted 'permutit' ?
  • HCl solution
  • 10% CaCl2 solution
  • 10% MgCl2 solution
  • 10% NaCl solution
Which of the following is not correct regarding electrolytic preparation of H2O2 ?
  • Lead is used as cathode
  • 50% H2SO4 is used
  • Hydrogen is liberated at anode
  • Sulphuric acid undergoes oxidation
Which one of the following processes will produce hard water ?
  • Saturation of water with CaCO3
  • Saturation of water with MgCO3
  • Saturation of water with CaSO4
  • Addition of Na2SO4 to water
The hardness of water sample containing 0.002 mole of magnesium sulphate dissolved in a litre of water is expressed as
  • 20 ppm
  • 200 ppm
  • 2000 ppm
  • 120 ppm
  • 240 ppm
Decomposition of H2O2 is prevented by
  • KOH
  • MnO2
  • acetanilide
  • oxalic acid
Calgon used as water softener is
  • Na2 [Na4 (PO3 )6 ]
  • Na2 [Na4 (PO3 )5 ]
  • Na4 [Na2 (PO3 )6 ]
  • None of these

Chemistry-Hydrogen-5082.png
  • 1, 1
  • 1, 2
  • zero, 1
  • zero, zero
What is the volume of '20 volume H2O2 ' required to get 5000 cm3 of oxygen at STP ?
  • 250 cm3
  • 20 cm3
  • 100 cm3
  • 125 cm3
H2O2 is formed by which of the following compounds?
  • Na2O2
  • NaOH
  • Na2O
  • KO2
Which is false about H2O2 ?
  • Act as both oxidising and reducing agent
  • Two OH bonds lie in the same plane
  • Pale blue liquid
  • Can be oxidised by ozone
The element which is the biggest source of energy in future is
  • Monoatomic gas
  • Gaseous non-metal
  • Liquid nonmetal
  • lightest element
Dihydrogen is liberated at the anode by electrolysis of :
  • Molten sodium hydride
  • Acidified water
  • Molten sodium chloride
  • Water with Ba(OH)2
The ionization of hydrogen atom would give rise to
  • Hydride ion
  • hydronium ion
  • Proton
  • hydroxyl ion.
The isotope of hydrogen with half-life of 12.33 year is :
  • Protium
  • Deuterium
  • Tritium
  • 2 & 3
Some statements about heavy water are given below:

(a) Heavy water is used as a moderator in nuclear reactors.

(b) Heavy water is more associated than ordinary water.

(c) Heavy water is more effective solvent than ordinary water.

Which of the above statements are correct?
  • (a) and (c)
  • (a) and (b)
  • (a), (b) and (c)
  • (b) and (c)
Hydrogen gas can be produced from
  • Water gas
  • producer gas
  • coal gas
  • air

Chemistry-Hydrogen-5084.png
  • Fe
  • Pd
  • FeCrO4
  • V2O5

Chemistry-Hydrogen-5085.png
  • Cl2
  • O2
  • N2
  • Na
The decay product of tritium is :

  • Chemistry-Hydrogen-5086.png
  • 2)
    Chemistry-Hydrogen-5087.png

  • Chemistry-Hydrogen-5088.png

  • Chemistry-Hydrogen-5089.png
The metal Zn, Al, Mg, & Be are placed in different Test tubes. If NaOH is added, the metal which liberate Hydrogen gas are
  • Zn, Al, Mg & Be
  • Zn & Al
  • Mg & Be
  • Zn, Al & Mg
Hydrogen closely resembles halogens because
  • Strong reducing agent
  • diatomic gas
  • it is a colourless gas
  • its is reduction potential is 0.00 V
The shape of water moleale is bent and not linear because
  • Bond angle is < 180
  • sp3 hybridisation
  • Presence of one lone pair of electron
  • sp2 hybridisation

Chemistry-Hydrogen-5090.png
  • Base
  • Reducing
  • acid
  • 1 & 2
The Only compound whose density in solid state is less if than liguid is
  • Water
  • Sodium hydrocide
  • Nitric acid
  • phosphoras penta chloride
The reaction of H2O2 with sulphur is an example of ........reaction
  • Addition
  • Oxidation
  • Reduction
  • Redox
SiCl4 + H2O → A + HCl A is
  • Si(OH)4
  • SiO2
  • SiO
  • SiCl4 ∙ 2H2O
MH + H2O → MOH + H2 ∙ M belongs to
  • p - block
  • d - block
  • s - block
  • p - block & d - block
An element forms electron rich hydride. The electronic configuration of the element is
  • [He]2s2 2p2
  • [He]2s2 2p1
  • [Ne]2s2 2p2
  • [He]2s2 2p5
The set if quantum number for valence electron of an element which from election precise of water is
  • n = 4, l = 2
  • n = 2, l = 1
  • n = 3, l = 0
  • n = 2, l = 0
0:0:1


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