Sulphur trioxide is dissolved in heavy water to form a compound X

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 Multiple Choice QuestionsMultiple Choice Questions

21.

The equilibrium molecular structure of hydrogen peroxide is :

  • Planar as given below

  • linear

  • tetrahedral

  • non-planar


22.

The process used in conversion of triolein to tristearin is

  • hydrolysis

  • hydration

  • hydrogenation

  • dehydrogenation


23.

.... process is used for the removal of hardness of water.

  • Calgon

  • Baeyer

  • Serpeck

  • Hoope


24.

What is the gas liberated when alkaline formaldehyde solution is treated with H2O2?

  • CO2

  • O2

  • CH4

  • H2


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25.

The products formed when heavy water is reacted with magnesium nitride, are

  • NH3, Mg(OH)2

  • NH3, Mg(OD)2

  • ND3, Mg(OH)2

  • ND3, Mg(OD)2


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26.

Sulphur trioxide is dissolved in heavy water to form a compound X. The hybridisation state of sulphur in X is :

  • sp2

  • sp3

  • sp

  • dsp2


B.

sp3

When SO3 is dissolved m heavy water D2SO4 is formed as

    SO3 + D2O → D2SO4

                          (X)

The hybridisation state ofS m D2SO4 is sp3.


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27.

Which one of the following reactions does not form gaseous product?

  • PbO2 + H2O2 →

  • Acidified KMnO4 + H2O

  • PbS + H2O2 →

  • Cl2 + H2O2 →


28.

Assertion (A) : NaCl is less soluble in heavy water than in ordinary water.

Reason (R) : Dielectric constant of ordinary water is more than that of heavy water.

The correct answer is:

  • Both (A) and (R) are true and (R) is the correct explanation of (A)

  • Both (A) and (R) are true but (R) is not the correct explanation of (A)

  • (A) is true, but (R) is not true

  • (A) is not true, but (R) is true


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29.

Which one of the following reactions represents the oxidising property of H2O2?

  • 2KMnO4 + 3H2SO4 + 5H2O2 → K2SO4 + 2MnSO4 + 8H2O + 5O2

  • 2K3[Fe(CN)6] + 2KOH + H2O2 → 2K4[Fe(CN)6] + 2H2O + O2

  • PbO2 + H2O2 → PbO + H2O + O2

  • 2KI + H2SO4 + H2O2 → K2SO4 + I2 + 2H2O


30.

The correct order of reactivity of hydrogen halides with ethyl alcohol is

  • HF > HCl > HBr > HI

  • HCl > HBr > HF > HI

  • HBr > HCl > HI > HF

  • HI > HBr > HCl > HF


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