Q. The most effective way to improve safety in a vast organization like the Indian Railways is to -
1) Ignore small acts of negligence by the staff
2) Carry out frequent checks
3) Educate the staff at all levels
4) Punish defaulting staff
Q. Why is it recommended that people should not use charcoal or gas stoves in closed rooms?
1) The electrical wiring in the room may catch fire
2) The stoves will get extinguished
3) It can cause carbon monoxide poisoning
4) The stoves may burst
Q. The phenomenon of an increase in the temperature of the earth's atmosphere due to absorption of the infrared radiation from the earth's surface is called -
1) Tsunami
2) Solar heating
3) Green-house effect
4) Seismic effect
Q. The term Squirrel cage is associated with -
1) pressure gauges
2) internal combustion engines
3) Potentiometers
4) Electric motors
Q. A ball weighing 25 grams is thrown vertically into the air. It takes 15 seconds to reach its highest point. How much time would it take to reach the ground from its highest point?
1) More data are required for calculation
2) Less than 15 seconds
3) more than 15 seconds
4) 15 seconds
Q. The kinetic energy of a body depends upon -
1) Mass, gravity, and height
2) It's mass alone
3) Its velocity alone
4) Both mass and velocity
Q. The maximum displacement of a vibrating body from its mean position is called -
1) Gyration
2) Wavelength
3) Amplitude
4) Impulse
Q. The force by which a body is attracted towards the earth of the earth is called -
1) Gravitational Force
2) Mass
3) Momentum
4) Impulsive force
Q. Which one of the following is the correct unit of angular velocity?
1) m / minute
2) cm/ sec 2
3) cm/ sec
4) radians / sec
Q. The value of Avogadro's constant is -
1) 6.022 x 10 23 per mole
2) 58.04 x 10 -2 per mole
3) 69.51 x10 -18 per mole
4) 6.022 x 10 14 per mole
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