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CBSE

Subject

Chemistry
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NEET Chemistry : Hydrogen

Multiple Choice Questions

31.

Fenton's reagent is

  • NaOH + FeSO4

  • H2O2 + FeSO4

  • H2O2 + ZnSO4

  • H2O2 + MgSO4



32.

Which of the following reactions increases the production of dihydrogen from synthesis gas?

  • CH4(g)+H2O(g) Ni1270KCO(g)+H2(g)

  • C(s)+H2O(g)1270 K CO(g)+H2(g)

  • CO(g)+H2O(g)Catalyst637KCO2(g)+H2(g)

  • C2H6+2H2O Ni1270K2CO+5H2



33.

Which of the following reactions depicts the reducing action of H2O2 ?

  • C6H6 + H2O2  C6H5OH + H2O

  • 2I- + 2H+ + H2O2  I2 + H2O

  • 2MnO4- + 6H+ +5H2O2 2Mn2+ + 5O2 + 8H2O

  • PbS + 4H2O2  PbSO4 + 4H2O



34.

Azeotropic mixture of HCl and water has:

  • 20.2% HCl

  • 22.2% HCl

  • 63% HCl

  • 84% HCl



35.

Deuterium oxide is used in nuclear reactor as

  • source of α-particle

  • source of deuteron

  • moderator

  • fuel



36.

The molarity of pure water is:

  • 100

  • 55.6

  • 18

  • 5.56



37.

The density of SO2 at STP is 2.86 kg m3. Its density at 819°C and 2 atmospheres is:

  • 0.715 kg m-3

  • 1.43 kg m-3

  • 2.86 kg m-3

  • 4.26 kg m-3



38.

H2O2 can be obtained when following reacts with H2SO4 except with

  • BaO2

  • PbO2

  • Na2O2

  • SrO2



39.

H2O is polar, whereas BeF2 is not because

  • electronegativity of F is greaterthan that of O.

  • H2O involves H-bonding, whereas BeF2 is a discrete molecule

  • H2O is angular and BeF2 is linear

  • H2O is linear and BeF2 is angular.



40.

The correct order of solubility ofthe following compounds in water is

  • Ba(OH)2 < Mg(OH)2

  • BaCO3 > CaCO3

  • Ca(OH)2  Mg(OH)2

  • CaSO4 < MgSO4



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