Test No 42.
1. Light year is astronomical unit of?
2. Earth takes time to rotate around its axis?
3. Alternate energy is defined as a source of energy that is an alternative of?
4. Seismic waves which cause most destruction on earth are?
5. Enzymes are made up of?
6. Radio waves broadcasted by Radio Broadcasting are reflected back by?
7. During combustion of petrol in car engine, energy used is ?
8. Barometer is used to measure?
9. How many calories are needed by human to maintain his weight?
10. Remote sensing are used to gather information by?
11. Cyclone are caused by?
12. Antibiotics are used to fight against?
13. Diseases are caused by?
15. In which bond there is a complete transfer of electron from one atom to another?
16. Value of One Astronomical Unit (Avg distance between Sun and Earth) is?
17. Dengue is caused by?
18. Formula of ozone is?
19. Day & Nights are caused by the rotation of earth from?
20. During day time, the sky looks blue because of?

1. Distance.
2. 6.64 x 10^4 s.
3. Fossil Fuels.
4. Surface waves.
5. protein.
6. ionosphere.
7. Chemical energy.
8. Pressure.
9. 3000.
10. Radar, Aircrafts, Satellite.
11. Heat, Low pressure, Humidity.
12. Bacteria.
13. Pathogens.
15. lonic bond.
16. 149 million km.
17. Aedes mosquito.
18. O3.
19. West to East.
20. Rayleigh Scattering.