Chemistry MCQs

Question 1

Which halide is used in making sensitive emulsion on photograhic film?

Accepted Answer

Silver bromide

Answer

Sodium chloride

Answer

Silver iodide

Answer

Silver chloride

Question 2

Detergents clean surfaces on the principle of

Accepted Answer

Surface tension

Answer

Viscosity

Answer

Elasticity

Answer

Floatation

Question 3

Which of the following compounds is commonly used as an antiseptic in mouthwashes and toothpastes ?

Accepted Answer

Sodium chloride

Answer

Borax

Answer

Saltpetre

Answer

Hydrogen peroxide

Question 4

Soap is prepared by boiling caustic soda with

Accepted Answer

Fats

Answer

Alcohol

Answer

Kerosene oil

Answer

Glycerine

Question 5

'All the four quantum numbers of two electrons in an atom are not the same.' It is the law of –

Accepted Answer

Exclusion Principle of Pauli

Answer

Hund's rule of maximum multiplicity

Answer

Uncertainty Principle of Hiesenberg

Answer

Avogadro's Law

Question 6

Which of the following is not a donor atom?

Accepted Answer

Aluminium

Answer

Phosphorus

Answer

Antimony

Answer

Arsenic

Question 7

What happens when a chemical bond is formed ?

Accepted Answer

Energy in always released

Answer

Energy is always absorbed

Answer

More energy is released than is absorbed

Answer

Energy is neither released nor absorbed

Question 8

Mark the compound which possess ionic, covalent and coordinate bonds.

Accepted Answer

NH4Cl

Answer

SO3

Answer

SO2

Answer

H2O

Question 9

In ice, the number of hydrogen bonds per water molecule is

Accepted Answer

4

Answer

1

Answer

2

Answer

8