181.

Which of the following is the anhydride of nitric acid?

• NO

• NO₂

• N₂O₃

• N₂O₅

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

• Protons

• Neutrons

• Electrons

• Both (a) and (c)

In the following reaction,

P₄ + 3NaOH + 3H₂O → PH₃ + 3NaH₂PO₂

• phosphorus is oxidised

• phosphorus is oxidised and reduced

• phosphorus is reduced

• sodium is oxidised

Which of the following does not have the hydrogen bond?

• Phenol

• Liquid NH₃

• Water

• Liquid HCl

Fluorine forms chemical compounds with

• He

• Ne

• Ar

• Xe

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

Phosgene is common name of

• carbon dioxide and phosphene

• phosphoryl chloride

• carbonyl chloride

• carbon tetrachloride

Which of the following inert gas is soluble in water?

• He

• Ne

• Ar

• Xe

The number of paired electrons in Xe atom of XeF₂ is

• 3

• 5

• 4

• 2

Hydrolysis of XeF₆ gives

• XeO₃

• XeO₆

• XeO₂

• XeO₄