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MCQs

Total Questions : 150 | Page 13 of 15 pages
Question 121. Match List I (Parameters) with List II (Units of Length) and select the correct answer from the codes given below the lists.Match List I (Parameters) With List II (Units Of Length) And...    Codes:
  1.    A-3,B-2,C-4,D-1
  2.    A-3,B-4,C-1,D-2
  3.    A-5,B-2,C-4,D-3
  4.    A-5,B-4,C-2,D-1
 Discuss Question
Answer: Option B. -> A-3,B-4,C-1,D-2
:
B
Option:(b)
Question 122. A person's spectacles have a power of-2.0. The spectacles have ____ and _____ are
1.converging lens
2.diverging lens
3.for short sight
4.for long sight
  1.    1 and 3
  2.    1 and 4
  3.    2 and 3
  4.    2 and 4
 Discuss Question
Answer: Option C. -> 2 and 3
:
C
Option:(c)
Question 123. What should be done to increase the pitch of a string instrument?
I.Increase the length of the string used
II.Decrease the guage of the string used
III.Loosen the string
IV.Tighten the string
  1.    I and IV
  2.    II and IV
  3.    I, II and IV
  4.    I and II
 Discuss Question
Answer: Option B. -> II and IV
:
B
Option:(b)
Question 124. Copper wires are generally used for electrical power transmission instead of iron wires because
  1.    copper is a better conductor than iron
  2.    copper is cheaper than iron
  3.    copper can take higher power than iron
  4.    copper is lighter than iron
 Discuss Question
Answer: Option A. -> copper is a better conductor than iron
:
A
Option:(a)
Question 125. Match List I with List II and select the correct answer from the codes given below the lists.Match List I With List II And Select The Correct Answer From...  Codes:
  1.    A-3,B-2,C-1
  2.    A-2,B-1,C-3
  3.    A-1,B-2,C-3
  4.    A-3,B-1,C-3
 Discuss Question
Answer: Option C. -> A-1,B-2,C-3
:
C
Option:(c)
Question 126. When a cube of ice floating on water in a beaker melts, the level of water in the beaker
  1.    rises
  2.    falls
  3.    remains the same
  4.    first rises and then falls
 Discuss Question
Answer: Option C. -> remains the same
:
C
Option:(c)
Question 127. The best conductor of heat among liquid is
  1.    Water
  2.    mercury
  3.    ether
  4.    alcohol
 Discuss Question
Answer: Option B. -> mercury
:
B
Option:(b)
Question 128. A football bounces when it falls on the ground because
  1.    it is made up of rubber
  2.    it is hollow
  3.    it is very light and is able to overcome the resistance of air
  4.    of its property of elasticity
 Discuss Question
Answer: Option D. -> of its property of elasticity
:
D
Option:(d)
Question 129. An iron hammer, lying in the sun, appears much hotter than its wooden handle because
  1.    iron is at a higher temperature
  2.    iron is darker than wood
  3.    iron absorbs more heat
  4.    iron is a good conductor of heat
 Discuss Question
Answer: Option D. -> iron is a good conductor of heat
:
D
Option:(d)
Question 130. On heating a circular metallic disc with a circular hole at the centre, the diameter of the hole will
  1.    decrease
  2.    remain the same
  3.    increase
  4.    first increase, then decrease
 Discuss Question
Answer: Option C. -> increase
:
C
Option:(c)

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