Physics Objective Questions - 2

Question: 6

In radar system, generation of power at high frequency needs

(A) High power transformer

(B) High power antenna

(C) High power magnetron

(D) None of these

Question: 7

The most important function of perspiration is to

(A) get rigid of the body wastes  

(B) regulate body waste

(C) regulate body temperature

(D) lubricate the skin

Question: 8

Water is a good solvent of ionic salts because

(A) It has no colour

(B) It has a high specific heat

(C) It has a high dipole moment

(D) It has a high boiling point

Question: 9

What is condensation?

(A) Change of heat energy into cooling energy 

(B) Change of vapour into liquid

(C) Change of solid into liquid

(D) Change of gas into solid

Question: 10

The chemical (ethylmerceptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of

(A) Fluorine 

(B) Bromine

(C) Chlorine

(D) Sulphur