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9th Grade > Physics

WORK AND ENERGY MCQs

Total Questions : 131 | Page 4 of 14 pages
Question 31. The change in the quality of the environment that can be harmful and unpleasant for living things is called
  1.    energy
  2.    pollution
  3.    revolution
  4.    transformation
 Discuss Question
Answer: Option B. -> pollution
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 32. During the interconversion of energy from one form to other forms, the total energy at any time remains
  1.    constant
  2.    zero
  3.    increasing
  4.    decreasing
 Discuss Question
Answer: Option A. -> constant
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 33. When a force acting on a body displaces it in the direction of a force than
  1.    uniform velocity occurs
  2.    uniform speed occurs
  3.    work is done
  4.    equilibrium take place
 Discuss Question
Answer: Option C. -> work is done
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 34. The energy stored in coal is
  1.    kinetic energy
  2.    potential energy
  3.    chemical energy
  4.    nuclear energy
 Discuss Question
Answer: Option C. -> chemical energy
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 35. A moving car possesses
  1.    sound energy
  2.    mechanical energy
  3.    heat energy
  4.    chemical energy
 Discuss Question
Answer: Option B. -> mechanical energy
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 36. The energy possessed by a body due to its position is called its
  1.    heat energy
  2.    kinetic energy
  3.    potential energy
  4.    chemical energy
 Discuss Question
Answer: Option C. -> potential energy
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 37. The energy use in solar cookers, solar distillation plants, solar power plants is known as
  1.    chemical energy
  2.    solar energy
  3.    thermal energy
  4.    nuclear energy
 Discuss Question
Answer: Option B. -> solar energy
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 38. A temperature rise in the environment that disturbs life is called
  1.    water pollution
  2.    nuclear pollution
  3.    thermal pollution
  4.    traffic pollution
 Discuss Question
Answer: Option C. -> thermal pollution
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 39. If a pump can lift 200 kg of water through a height of 6 m in 10 seconds, then its power is
  1.    1100 watts
  2.    1000 watts
  3.    1300 watts
  4.    1200 watts
 Discuss Question
Answer: Option D. -> 1200 watts
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 40. Plant or animal wastes that can be burnt as fuel is called
  1.    biomass
  2.    biochemical
  3.    magma
  4.    bimetallic
 Discuss Question
Answer: Option A. -> biomass
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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