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 Multiple Choice QuestionsMultiple Choice Questions

181.

Which of the following is the anhydride of nitric acid?

  • NO

  • NO2

  • N2O3

  • N2O5


182.

Chlorine atom differs from chloride in the number of which of the following?

  • Protons

  • Neutrons

  • Electrons

  • Both (a) and (c)


183.

In the following reaction,

P4 + 3NaOH + 3H2O → PH3 + 3NaH2PO2

  • phosphorus is oxidised

  • phosphorus is oxidised and reduced

  • phosphorus is reduced

  • sodium is oxidised


184.

Which of the following does not have the hydrogen bond?

  • Phenol

  • Liquid NH3

  • Water

  • Liquid HCl


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185.

Fluorine forms chemical compounds with

  • He

  • Ne

  • Ar

  • Xe


186.

The passivity of iron in concentrated nitric acid is due to

  • ferric nitrate coating on the metal

  • ammonium nitrate coating on the metal

  • a thin oxide layer coating on the metal

  • a hydride coating on the metal


187.

Phosgene is common name of

  • carbon dioxide and phosphene

  • phosphoryl chloride

  • carbonyl chloride

  • carbon tetrachloride


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188.

Which of the following inert gas is soluble in water?

  • He

  • Ne

  • Ar

  • Xe


D.

Xe

Solubility of inert gas in water is due to dipole induced dipole interaction. As the size of the inert gas increases, the extent of polarisation increases. Consequently, the magnitude of the dipole induced dipole interaction increases and hence, the solubility of the noble gas in water increases from He to Rn.


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189.

The number of paired electrons in Xe atom of XeF2 is

  • 3

  • 5

  • 4

  • 2


190.

Hydrolysis of XeF6 gives

  • XeO3

  • XeO6

  • XeO2

  • XeO4


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