Quiz on Physics Set 121

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Quiz on Physics Set 121 :

Question 1 : 

A radioactive element emits an alpha particle. The mass number of the element, after emission
A. Increases by three
B. Remains unchanged
C. Increases by one
D. Decreases by four

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Correct Ans: Option D

Question 2 : 

Fog is an example of
A. Solid dispersed in gas
B. Gas dispersed in gas
C. Solid dispersed in liquid
D. Liquid dispersed in gas

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Correct Ans: Option D

Question 3 : 

Pure water is bad conductor of electricity as it is
A. a non-polar solvent
B. a very good solvent
C. feebly ionized
D. not volatile

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Correct Ans: Option C

Question 4 : 

The hydraulic brakes used in automobiles is a direct application of:
A. Pascal's law
B. Toricellian law
C. Bernoulli's theorem
D. Archimedes' principle

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Correct Ans: Option A

Question 5 : 

The S.I. unit of electric charge is:
A. kelvin
B. coulomb
C. e.s.u
D. ampere

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Correct Ans: Option B

Question 6 : 

Refrigerators keep food unspoiled as
A. at its low temperature, the germs are killed
B. at its low temperature, bacteria & moulds are inactive
C. at its low temperature, the germs are frozen
D. it sterilises the food

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Correct Ans: Option A

Question 7 : 

A cycle tyre bursts suddenly. This represents an
A. Isoboric process
B. Isothermal process
C. Adiabatic process
D. Isochoric process

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Correct Ans: Option C

Question 8 : 

A decibel is
A. a musical instrument
B. the wavelength of noise
C. a musical note
D. a measure of sound level

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Correct Ans: Option D

Question 9 : 

Which of the following is the purest form of iron
A. Wrought iron
B. Pig iron
C. Cast iron
D. Steel

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Correct Ans: Option A

Question 10 : 

The Laser is a beam of radiations which are
A. Non-coherent & monochromatic
B. Coherent & monochromatic
C. Coherent & non-monochromatic
D. Non-coherent & non-monochromatic

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Correct Ans: Option B

Quiz Summary

Here the correct answers of every question in this quiz.

Q.1 [D],     Q.2 [D],     Q.3 [C],     Q.4 [A],     Q.5 [B],     Q.6 [A],     Q.7 [C],     Q.8 [D],     Q.9 [A],     Q.10 [B],    


Total Questions: 10
Your score:
Subject: Physics
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