What is the temperature of the dead human body on Celsius scale?
A. 65o𝑐
B. 90oc
C. 0oc
D. According to temperature around the body
Which of the following metals is used to make aircraft body?
A. Aluminum
B. Silver
C. Copper
D. All Of These
In a railway track, two rails are joined end to end with a small gap between then because ?
A. Steel can be saved
B. Accidents due to expansion in summer can be avoided
C. Accidents due to contraction in winter can be avoided
D. Air gasp are necessary for bearing the weight of running train
Which of the following is true?
A. Drinking polluted water causes malaria.
B. The instrument used to measure velocity of wind is barometer.
C. Our eye is very sensitive to blue light.
D. Sound can not travel through vacuum.
The energy possessed by water in dam is?
A. Potential Energy.
When a man fires a gun, he is pushed back slightly, due to?
A. Third Law of Newton.
A balloon filled with hydrogen, rises in the air, because?
A. The weight of hydrogen is greater than the weight of the air.
B. The weight of hydrogen is equal to the weight of the air.
C. The weight of hydrogen is less than the weight of the air.
D. The surface of the balloon I smooth.
It is dangerous to sleep under the trees at night, because?
A. Plants give out Carbon Dioxide at night.
B. Plants give out Oxygen at night.
C. Plants give out Nitrogen at night.
D. Plants give out Hydrogen at night.
Which color of clothes is a good reflector of heat?
A. White Color.