1.Which of the following is a scalar quantity?
Electric Field
Average Velocity
Power
Magnetic Momentum
2.If the velocity of a body is doubled-
Its Kinetic Energy is doubled
Its potential Energy is doubled
Its Momentum is doubled
Its Acceleration is doubled
3.Clothes keep us warm in winter because they-
supply heat
do not rediate heat
prevent air from contacting the body
prevent the heat of the body from escaping
4.Permanent magnet can be made from
Cobalt
Aluminum
Zinc
Lead
5.Who among the following is known as 'Father of Biology'?
Aristotle
Darwin
Lamark
Hippocrates
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