A device which converts chemical energy into electrical energy is called:
A. motor
B. generator
C. moving-coil meter
D. Battery
For a fixed mass of gas at constant temperature, if we decrease volume, the pressure will:
A. also decrease
B. increase
C. remains constant
D. none of these
Deficiency of Vitamin-A results in:
A. night blindness
B. rickets
C. scurvy
D. hair fall