Question

Which of the following statements are true
(a) Rubber contracts on heating
(b) Water expands on freezing
(c) Water contracts on heating from $0^{\circ }C$ to $4^{\circ }C$
(d) Water expands on heating from $4^{\circ }C$ to ${40}^{\circ }C$

• A. (a) is correct
• B. (b) and (c) are correct
• C. (c) & (d) are correct
• D. all are correct

Answer 1

The correct option is D all are correct

(a)Rubber is a polymer its chain breaks on heating leading decrease intermolecular distance hence it contracts
(b) Density of ice is less than density of water therefore, water expands on freezing
(c)Density of water is highest at 4 degree centigrade therefore, therefore from 0 degree to 4 degree water contracts
(d) After 4 degree density of water decreases with rise in temperature therefore, water expands
Hence all are correct option (D) is correct