set 1 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) have very small elastic range
(b) are not elastic at all
(c) do not obey Hooke’s law
(d) None of these
The correct answers to the above question in:
Answer: (c)
Elastomers do not obey Hooke’s law.
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Read more physical properties of materials Based General Science Questions and Answers
Question : 1
With the increase of temperature, the surface tension of the liquid
a) remains the same
b) may increase or decrease depending on the density of liquid
c) always increases
d) always decreases
Answer »Answer: (d)
Surface-Tension is the property of liquid at rest.
As we increase temperature, due to the gain in kinetic energy of molecules, surface tension decreases.
Question : 2
Kerosene rises in the wick of the stove is due to
a) Diffusion
b) Surface tension
c) Osmosis
d) Biogen contraction
Answer »Answer: (b)
Question : 3
Why the dam of water reservoir is thick at the bottom?
a) Density of water increases with depth
b) Quantity of water increases with depth
c) Pressure of water increases with depth
d) Temperature of water increases with depth
Answer »Answer: (c)
A torque is acting on the wall of the dam trying to make it topple. The bottom is made very broad so that the dam will be stable.
Question : 4
Which of the following is the byproduct derived from the refining process of petroleum?
a) Charcoal
b) Coal
c) Petrol
d) Asphalt
Answer »Answer: (d)
Question : 5
A stretched rubber has
a) increased potential energy
b) increased kinetic energy
c) decreased kinetic energy
d) decreased potential energy
Answer »Answer: (a)
Question : 6
If an unsaturated sugar solution is prepared by mixing 100 grams of sugar with half litre of water, which of the following physical quantities will not change?
a) Density
b) Concentration
c) Mass
d) Volume
Answer »Answer: (d)
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