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

378.

Which of the following elements exhibits the most basic properties?

• F

• Cl

• Br

• I

Which of the following sulphate is insoluble in water?

• CuSO₄

• CdSO₄

• PbSO₄

• Bi₂(SO₄)₃

A deep brown gas is formed by mixing two colourless gases which are

• NO₂ and O₂

• N₂O and NO

• NO and O₂

• NH₃ and HCl