set 2 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 2 EXERCISES
The following question based on physical properties of materials topic of general science mcq
(a) Weight
(b) Mass
(c) Volume
(d) Density
The correct answers to the above question in:
Answer: (d)
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Read more physical properties of materials Based General Science Questions and Answers
Question : 1
Kerosene oil floats on water because
a) Its density is less than the density of water
b) Its density is equal to that of the density of water
c) Its density is greater than the density of water
d) None of the above
Answer »Answer: (a)
Question : 2
A water tank of height 10 m, completely filled with water is placed on a level ground. It has two holes one at 3 m and the other at 7 m from its base. The water ejecting from
a) upper hole will fall farther than that from the lower hole
b) both the holes will fall at the same spot
c) upper hole will fall closer than that from the lower hole
d) more information is required
Answer »Answer: (b)
Velocity of water from hole
A = $v_1 = √{2gh}$
Velocity of water from hole B = $v_2 = √{2g(H_O -h)}$
Time of reaching the ground from hole
B= $t_1 = √{{2g(H_O -h)}/g}$
Time of reaching the ground from hole A = $t_2 = √{{2h}/g}$
Question : 3
A tank filled with water has a hole at a certain height from its bottom. The volume of water emerging out per second from the hole does not depend on
a) the area of a hole.
b) the height of the level of liquid above the hole.
c) the density of a liquid.
d) the acceleration due to gravity.
Answer »Answer: (c)
Volume per second = A$√{2gh}$
Question : 4
The action of a nib split at the top is explained by
a) diffusion of fluid
b) gravity flow
c) capillary action
d) osmosis of liquid
Answer »Answer: (c)
Question : 5
Small droplets of a liquid are usually more spherical in shape than larger drops of the same liquid because
a) force of surface tension predominates the force of gravity
b) force of surface tension is equal and opposite to the force of gravity
c) force of gravity predominates the force of surface tension
d) force of gravity and force of surface tension act in the same direction and are equal
Answer »Answer: (a)
Question : 6
Pressure inside a soap bubble is
a) Less than atmospheric pressure
b) Equal to atmospheric pressure
c) More than atmospheric pressure
d) Half of atmospheric pressure
Answer »Answer: (c)
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