Q. Troposphere is the hottest part of the atmosphere because
1) it is closest to the sun
2) heat is generated in it
3) it is heated by the Earth's surface
4) there are charged articles in it
Q. The outermost layer of the Sun is called
1) Corona
2) Lithosphere
3) Photosphere
4) Chromosphere
Q. Where was India's first computer installed?
1) Indian Statistical Institute, Calcutta
2) Indian Institute of Technology, Delhi
3) Indian Institute of Science, Bangalore
4) Indian Iron & Steel Co.Ltd., Burnpur
Q. Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission?
1) Uranium
2) Plutonium
3) Boron
4) Heavy water
Q. Hydrogen bomb is based on the principle of
1) uncontrolled fusion reaction
2) controlled fusion reaction
3) uncontrolled fission reaction
4) controlled fission reaction
Q. What is the commonly used unit for measuring the sped of data transmission?
1) Bits per second
2) Nano seconds
3) Characters per second
4) Mega Hertz
Q. Which type of reaction produces the most harmful radiation?
1) Fusion reaction
2) Chemical reaction
3) Fission reaction
4) Photo-Chemical reaction
Q. Which type of glass is used for making glass reinforced plastic?
1) Fibre glass
2) Quartz glass
3) Flint glass
4) Pyrex glass
Q. Which of the metals causes Itai-itai disease?
1) Cobalt
2) Copper
3) Chromium
4) Cadmium
Q. Glycol is added to aviation gasoline because it
1) prevents freezing of petrol
2) reduces consumption of petrol
3) reduces evaporation of petrol
4) increase efficiency of petrol
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