TRB Chemistry Question Bank - 3

Question: 11

When lime is mixed with water in limekiln, it gives

(A) Milk of lime

(B) Slaked lime

(C) Quick lime

(D) Limestone

Question: 12

Which one of the following is not an element?

(A) Nitrogen

(B) Silica

(C) Hydrogen

(D) Oxygen

Question: 13

The high boiling point of water is due to

(A) Dipole interaction

(B) Hydrogen bonding

(C) Electrostatic forces

(D) Vander Walls forces

Question: 14

Candles contains a mixture of

(A) bees wax and paraffin wax

(B) bees wax and stearic acid

(C) higher fatty acid

(D) paraffin wax and stearic acid

Question: 15

In coloured glass, the purple colour is imparted by

(A) Ferric oxide

(B) Manganese oxide

(C) Selenium sulphide

(D) Cadmium sulphide