TOP 10 GENERAL SCIENCE MCQ QUESTIONS AND THEIR ANSWER - EDUDRONA
1. In which of the following will a piece of iron weigh most?
(a) in air
(b)in an atmosphere of oxygen
(c) in an atmosphere of CO2
(d)in vacuum
Ans: (d)
3. The principle on which a Jet engine works is
(a) conservation of mass
(b)Newtonian law of action and reaction
(c) conservation of angular momentum
(d)None of the above
Ans: (b)
4. It is easier to climb down a staircase than climb up because in climbing
down
(a) work is done against gravity
(b)the steepness of the staircase isn't felt
(c) gravity assists
(d)there is no friction between the legs and steps
Ans: (c)
5. A man stands in a lift which accelerates upwards. The resultant reaction
force on the floor of the lift is
(a) greater than the weight of the man
(b)less than the weight of the man
(c)same as the weight of the man
(d) zero
Ans: (a)
6. Which physical quantity is measured in watts
(a) power
(b)kinetic energy
(c) momentum
(d)impulse
Ans: (a)
7. The theory that the earth constituted the centre of the universe around which
the sun and the planets revolved was propounded by
(a) Copernicus
(b)Ptolemy
(c) Newton
(d)Kepler
Ans: (b)
8. It is more difficult to walk on ice than on a concrete road because
(a) there is very little friction between the ice and feet pressing it
(b)ice is soft when compared to concrete
(c) there is more friction between the ice and feet
(d)None of the above
Ans: (a)
9. When the velocity of a body is halved
(a) its momentum is halved
(b)its kinetic energy is halved
(c) its acceleration is halved
(d)its potential energy is halved
Ans: (a)
10.The inability of a body to change its state of rest or uniform motion along a
straight line is called its
(a) momentum
(b)velocity
(c) acceleration
(d)inertia
Ans: (d)
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