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) become 3 times
(b) become 2 times
(c) become 4 times
(d) remain unchanged
The correct answers to the above question in:
Answer: (c)
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Read more physical properties of materials Based General Science Questions and Answers
Question : 1
At which temperature density of water is maximum?
a) 0°C
b) – 4°C
c) 4°C
d) – 8°C
Answer »Answer: (c)
Question : 2
Four wires of same material and dimensions as mentioned below are stretched by a load of same magnitude separately. Which one of them will be elongated maximum?
a) Wire of 2 m length and 2 mm diameter
b) Wire of 3 m length and 1.5 mm diameter
c) Wire of 1 m length and 2 mm diameter
d) Wire of 1 m length and 1 mm diameter
Answer »Answer: (b)
Question : 3
The most important property of nanomaterial is
a) Friction
b) Pressure
c) Force
d) Temperature
Answer »Answer: (a)
Question : 4
The tendency of a liquid drop to contract and occupy minimum area is due to
a) Viscosity
b) Density
c) Surface tension
d) Vapour pressure
Answer »Answer: (c)
Question : 5
Why does an iron nail float on mercury while it sinks in water?
a) Iron is heavier than water and lighter than mercury
b) Iron has greater density than water and lesser than mercury
c) Due to less chemical interaction of iron with mercury than it is with water
d) Mercury is heavier than water
Answer »Answer: (b)
Question : 6
According to Hooke’s law of elasticity, if stress is increased, then the ratio of stress to strain
a) remains constant
b) becomes zero
c) decreases
d) increases
Answer »Answer: (a)
The ratio of stress to strain is always constant. If stress is increased, strain will also increase so that their ratio remains constant.
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