Science GK Quiz Questions for Practice
What does dung gas mainly contain?
(A) Methane
(B) Acetylene
(C) Ethylene
(D) None of these
Correct Answer : A
An aqueous solution of ammonium chloride is?
(A) Indifferent
(B) Colorful
(C) Alkaline
(D) None of these
Correct Answer : C
Who is the discoverer of hydrogen?
(A) Priestley
(B) Cavendish
(C) Ure
(D) Levizer
Correct Answer : B
Which of the following is not a non-metal?
(A) Sulfur
(B) Aluminum
(C) Carbon
(D) Nitrogen
Correct Answer : B
Which of the following is an atomic gas?
(A) Chlorine
(B) Helium
(C) Nitrogen
(D) None of these
Correct Answer : B
Does oil rise in the wick of the lamp because?
(A) the oil is too light
(B) due to capillary action
(C) due to decrease in surface tension
(D) oil is volatile
Correct Answer : B
Explanation :
The correct answer is Capillary action. The oil in the wick of an oil lamp rises up due to capillary action. This effect is due to surface tension of liquids. The wick here acts as a capillary tube.
The hairs of the shaving brush stick together after coming out of the water, what is the reason for this?
(A) Friction
(B) Surface tension
(C) Elasticity
(D) Viscosity
Correct Answer : B
Explanation :
When the brush is taken out of water, the hairs cling together due to surface tension. This happens because the free surface of water tries to acquire a minimum surface area.
If the length of the pendulum is made four times, then the time of swing of the pendulum?
(A) Decreases
(B) Becomes Four Times
(C) Becomes One Fourth
(D) Doubles
Correct Answer : D
Explanation :
Therefore we can say that time period is directly proportional to square root of length of the pendulum. Therefore as the length of the pendulum becomes four times, the time period becomes the 2 times.
The apparent weight of a person in a lift is less than the actual weight when the lift is moving?
(A) up with acceleration
(B) down at the same speed
(C) up with uniform speed
(D) down with acceleration
Correct Answer : D
Explanation :
The apparent weight of a body in an elevator moving with downward acceleration is given by N = m ( g – a ) . Thus, the apparent weight of the body is less than the actual weight of the body.
An ice cube is floating in a glass of water, when the ice melts, what will be the effect on the water level?
(A) will increase will decrease
(B) first increase then decrease
(C) will remain the same
(D) none of these
Correct Answer : C
Explanation :
When a floating piece of ice melts into water, it contracts by the volume equal to the volume of ice pieces above the water surface while floating on it. Hence, the level of water does not change when ice floating on it melts.
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Rajesh Bhatia
A Writer, Teacher and GK Expert. I am an M.A. & M.Ed. in English Literature and Political Science. I am highly keen and passionate about reading Indian History. Also, I like to mentor students about how to prepare for a competitive examination. Share your concerns with me by comment box. Also, you can ask anything at linkedin.com/in/rajesh-bhatia-7395a015b/.
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