A device which converts chemical energy into electrical energy is called _____. A. motor B. generator C. moving-coil meter D. battery <!--more-->

Radioactivity was discovered by _____. A. Kelvin B. Thomson C. Rutherford D. Bacquerel <!--more-->

The density of water is ______.

A. 1 g/cm3
B. 1.5 g/cm3

C. 2 g/cm3
D. none of these

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The lifespan of Red Blood Cells is ______ days.

A. 60
B. 120
C. 180
D. 240

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For a fixed mass of gass at constant temperature, if we decrease volume, the pressure will______.

A. also decrease
B. increase
C. remains constant
D. none of these

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Deficiency of Vitamin-A results in _______.

A. night blindness
B. rickets
C. scurvy
D. hair fall

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