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1500 Important Physics MCQ Question and Answer PDF

4000 Important General Science MCQ Question & Answer in PDF Download

1.Which of the following is a non-renewable source of energy?

  • ABiogas
  • BSolar
  • CWind
  • DCoal
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Correct Answer : (D)

Coal
Explanation:

2.Heat from the Sun reaches the Earth by the process of

  • AReflection
  • BConduction
  • CRadiation
  • DConvection
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Correct Answer : (C)

Radiation
Explanation:

3.Which of the following parts of the sunlight makes the solar cooker hot?

  • AUltra violet
  • BRed light
  • CInfra red
  • DCosmic rays
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Correct Answer : (C)

Infra red
Explanation:

4.Longitudinal waves cannot travel through

  • AVacuum
  • BSolid
  • CLiquid
  • DGas
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Correct Answer : (A)

Vacuum
Explanation:

5.Oil rises up the wick in a lamp because

  • AOil is very light
  • BOf the diffusion of oil through the wick
  • COf the surface tension phenomenon
  • DOf the capillary action phenomenon
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Correct Answer : (D)

Of the capillary action phenomenon
Explanation:

6.Plants are dried up in winter due to frost because

  • AEvaporation does not take place
  • BPhotosynthesis does not take place at such low temperature
  • CRespiration does not take place at low temperature
  • DThere is mechanical loss of tissues and drought condition prevails
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Correct Answer : (D)

There is mechanical loss of tissues and drought condition prevails
Explanation:

7.Which of the following laws validates the statement that matter can neither be created nor destroyed?

  • ALaw of conservation of energy
  • BLe Chatelier?s  Principle
  • CLaw of conservation of mass
  • DLaw of osmosis
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Correct Answer : (C)

Law of conservation of mass
Explanation:

8.Decibel is the unit used for

  • ASpeed of light
  • BIntensity of heat
  • CIntensity of sound
  • DRadio wave frequency
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Correct Answer : (C)

Intensity of sound
Explanation:

9.The term “Isoneph” indicates the lines of equal

  • ACloudiness
  • BSalinity
  • CRainfall
  • DPressure
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Correct Answer : (A)

Cloudiness
Explanation:

10.Why does bleeding occur through the nose in high mountainous regions?

  • AThe pressure of blood in capillaries is greater than the outside pressure
  • BThe pressure at high altitudes is greater than that on the plains
  • CThe blood pressure of a person increases at high altitudes
  • DThe blood pressure fluctuates and finally decreases drastically
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Correct Answer : (C)

The blood pressure of a person increases at high altitudes
Explanation:

11.An oil drop spreads over water because

  • AWater
  • BOil is more viscous
  • COil does not mix with water
  • DSurface tension of oil is much smaller than that of water
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Correct Answer : (D)

Surface tension of oil is much smaller than that of water
Explanation:

12.Boyle's law is a relationship between

  • APressure and volume
  • BVolume and temperature
  • CVolume and density
  • DPressure and temperature
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Correct Answer : (A)

Pressure and volume
Explanation:

13.Which of the following produces more severe burns?

  • ABoiling water
  • BHot water
  • CSteam
  • DMelting iceberg
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Correct Answer : (C)

Steam
Explanation:

14.Which one of the following animals can hear ultrasonic sound?

  • ARat
  • BSquirrel
  • CCat
  • DBat
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Correct Answer : (D)

Bat
Explanation:

15.A fountain pen works on the principle of

  • AFlow of liquids from higher to lower potential
  • BCapillary action
  • CBernoulli?s principle
  • DViscosity of liquids
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Correct Answer : (B)

Capillary action
Explanation:

16.A hydrogen balloon floats up because of

  • AAir pressure decreases with decrease in height
  • BAir pressure decreases with decrease in weight
  • CWeight of the balloon is less than the weight of air displaced by it
  • DThe pressure inside the balloon is more than the pressure outside it
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Correct Answer : (C)

Weight of the balloon is less than the weight of air displaced by it
Explanation:

17.Which of the following has got more heat capacity?

  • AIron piece
  • BWater
  • CGold piece
  • DBenzene
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Correct Answer : (B)

Water
Explanation:

18.If the temperature of a place increases suddenly, the relative humidity

  • AIncreases
  • BDecreases
  • CRemains constant
  • DFluctuates
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Correct Answer : (B)

Decreases
Explanation:

19.The energy stored in a watch spring is

  • AKinetic energy
  • BPotential energy
  • CHeat energy
  • DChemical energy
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Correct Answer : (B)

Potential energy
Explanation:

20.The oldest type of energy known to man is

  • AWind power
  • BSolar power
  • CTidal energy
  • DGeothermal energy
Answer / Hint Save Question Comment On Question
Correct Answer : (D)

Geothermal energy
Explanation:
4000 Important General Science MCQ Question & Answer in PDF Download

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