A device which converts chemical energy into electrical energy is called __________? A. motor B. generator C. moving-coil meter D. battery Batteries are devices that convert stored chemical energy into useful electrical energy. It consists of a number of voltaic…
Radioactivity was discovered by __________? A. Kelvin B. Thomson C. RutherfordD. Bacquerel
The density of water is __________? A. 1 g/cm3 B. 1.5 g/cm3 C. 2 g/cm3 D. none of these
The lifespan of Red Blood Cells is __________ days? A. 60B. 120 C. 180 D. 240
For a fixed mass of gass at constant temperature, if we decrease volume, the pressure will _________? A. also decreaseB. increase C. remains constant D. none of these
Deficiency of Vitamin-A results in __________? A. Night blindness B. rickets C. scurvy D. hair fall
Long-sight defect could be corrected by using __________ lens? A. concave B. Convex C. diverging D. none of these ALSO CHECK: Short-sight defect could be corrected by a _____________ lens?
The gas used in a refrigerator to cool water is___________? A. Nitrogen B. Carbon dioxide C. MethaneD. Tetrafluoroethane Tetrafluoroethane: It is one of the commonly used refrigerant gases which you can find in almost all the present time refrigerators. This…
The SI unit of charge is __________? A. AmpereB. Coulomb C. Ohm D. Volt
Severe deficiency of Vitamin D results in __________. A. scurvyB. rickets C. night blindness D. None of these