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MCQs

Total Questions : 335 | Page 27 of 34 pages
Question 261. What is the best way to reduce the noise pollution around houses?
  1.    Throwing all noisy machines
  2.    Built a noise resistant shield across the house
  3.    Use of ear buds to reduce the noise
  4.    Planting trees around houses
 Discuss Question
Answer: Option D. -> Planting trees around houses
Answer: (d).Planting trees around houses
Question 262. How does a car in good condition can cause less pollution?
  1.    It goes in high speed
  2.    It requires less fuel
  3.    It gives safety
  4.    It avoids muffler chugging down the streets
 Discuss Question
Answer: Option D. -> It avoids muffler chugging down the streets
Answer: (d).It avoids muffler chugging down the streets
Question 263. What is the best way to reduce aircraft noise?
  1.    By using shield around aircraft
  2.    By using quieter jet engines
  3.    By using heavy propellants
  4.    By using white paint
 Discuss Question
Answer: Option B. -> By using quieter jet engines
Answer: (b).By using quieter jet engines
Question 264. What is used during sleep in order to avoid noise pollution?
  1.    Mask
  2.    Earplugs
  3.    Cotton shirts
  4.    Jackets
 Discuss Question
Answer: Option B. -> Earplugs
Answer: (b).Earplugs
Question 265. In order to reduce the roadside noise which of the following product Australian Government designed?
  1.    Sound tube
  2.    Ear buds
  3.    Ear repellent
  4.    Noise repellent
 Discuss Question
Answer: Option A. -> Sound tube
Answer: (a).Sound tube
Question 266. In which Act, noise is included as an environmental pollutant?
  1.    1974
  2.    1981
  3.    1988
  4.    1994
 Discuss Question
Answer: Option B. -> 1981
Answer: (b).1981
Question 267. What is called when an industry removes water from a source and then returns the heated water to its source?
  1.    Water pollution
  2.    Soil pollution
  3.    Air pollution
  4.    Thermal pollution
 Discuss Question
Answer: Option D. -> Thermal pollution
Answer: (d).Thermal pollution
Question 268. Loud speakers cause noise.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 269. Which one of the following can cause thermal pollution?
  1.    Residential houses
  2.    Power plants
  3.    Death of marine organisms
  4.    Oil spill
 Discuss Question
Answer: Option B. -> Power plants
Answer: (b).Power plants
Question 270. What is the effect of warmer temperature to the fishes?
  1.    Increase the metabolism
  2.    Decrease the metabolism
  3.    Stabilize the metabolism
  4.    Increase the solubility of oxygen
 Discuss Question
Answer: Option A. -> Increase the metabolism
Answer: (a).Increase the metabolism

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