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1 Physics MCQs

Water is a highly effective coolant for a car engine because _________?

  • Water is good conductor of heat
  • Water has very high specific heat capacity
  • Water boils at a comparatively high temperature
  • Evaporation of water produces lot of cooling
0 Comments
Correct Answer: B. Water has very high specific heat capacity

Explanation:

Water is widely used as a coolant in car engines because ... Read More Details

2 Physics MCQs

Scalding with steam is more severe than scalding by boiling water because_______?

  • Steam can penetrate the skin
  • Steam is at a higher temperature
  • Steam contains more energy than boiling water
  • Steam is at a higher pressure
0 Comments
Correct Answer: C. Steam contains more energy than boiling water

Explanation:

Scalding with steam is more severe than scalding by boiling water ... Read More Details

3 Physics MCQs

The cracking sound heard when dry hair is combed with a hard rubber comb is due to

  • The hair barging against the charged comb
  • Small electric sparks
  • The rubbing of the comb with the hair
  • None of the above
0 Comments
Correct Answer: B. Small electric sparks

Explanation:

The cracking or snapping sound heard when dry hair is combed with a ... Read More Details

4 Chemistry MCQs

The coating of iron pipes with zinc to prevent corrosion is called?

  • Electroplating
  • Annealing
  • Galvanization
  • Vulcanization
0 Comments
Correct Answer: C. Galvanization

Explanation:

The process of coating iron or steel with a layer of zinc to ... Read More Details

5 Chemistry MCQs

Detergents dissolved in water help in cleaning clothes by?

  • Increasing the temperature of water
  • Reacting chemically with dirt
  • Reducing the surface tension of water
  • Dissolving dirt
0 Comments
Correct Answer: C. Reducing the surface tension of water

Explanation:

Detergents clean clothes effectively because they reduce the surface tension of water, allowing ... Read More Details

6 Physics MCQs

The absorption of ink by blotting paper involves__________?

  • Viscosity of ink
  • Capillary action phenomenon
  • Diffusion of ink through the blotting
  • Siphon action
0 Comments
Correct Answer: B. Capillary action phenomenon

Explanation:

The absorption of ink by blotting paper is an example of ... Read More Details

7 Physics MCQs

Materials for rain-proof coats and tents owe their water proof properties to________?

  • Surface tension
  • Viscosity
  • Specific gravity
  • Elasticity
0 Comments
Correct Answer: A. Surface tension

Explanation:

The waterproof properties of materials used in rain-proof coats and tents ... Read More Details

8 Physics MCQs

A satellite moving round the earth with a uniform speed has____________?

  • An accelerated motion
  • No acceleration at all
  • Uniform acceleration
  • Uneven acceleration
0 Comments
Correct Answer: A. An accelerated motion

Explanation:

A satellite moving around the Earth with uniform speed is said ... Read More Details

9 Physics MCQs

For being able to see three-dimensional pictures we have to use?

  • A binocular
  • A camera
  • An epidiascope
  • A stereoscope
0 Comments
Correct Answer: A. A binocular

Explanation:

A stereoscope is an optical device used to view three-dimensional (3D) ... Read More Details

10 Physics MCQs

Water has maximum density at____________?

  • 0°C
  • 4°C
  • 4° K
  • 4.8°C
0 Comments
Correct Answer: B. 4°C

Explanation:

What makes water special is its unusual behavior compared to most other liquids. ... Read More Details

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