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MCQs

Total Questions : 244 | Page 20 of 25 pages
Question 191. Harmful and high cost pesticides can be replaced by______________
  1.    Weeds
  2.    Small animals
  3.    Artificial protectors
  4.    Natural predators
 Discuss Question
Answer: Option D. -> Natural predators
Answer: (d).Natural predators
Question 192. Though farmers are aware that chemical fertilizers cause damage to the soil of the field they are using it because___________________
  1.    Output is low
  2.    Output is high
  3.    For healthy crop
  4.    For healthy soil
 Discuss Question
Answer: Option B. -> Output is high
Answer: (b).Output is high
Question 193. Which of the following situation is not the effect of modern agriculture?
  1.    Bio magnification
  2.    Lost of soil fertility
  3.    Carbon pollution
  4.    Ozone depletion
 Discuss Question
Answer: Option D. -> Ozone depletion
Answer: (d).Ozone depletion
Question 194. Irrigation with light sodium water may damage soil structure by the formation of alkaline soil.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 195. Energy is released from fossil fuels when they are___________________
  1.    Pumped
  2.    Cooled
  3.    Burned
  4.    Pressurized
 Discuss Question
Answer: Option C. -> Burned
Answer: (c).Burned
Question 196. Oil release sulfur dioxide gas when they burn.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 197. In the production of wave energy which form of energy is used?
  1.    Potential energy
  2.    Kinetic energy
  3.    Solar energy
  4.    Wind energy
 Discuss Question
Answer: Option B. -> Kinetic energy
Answer: (b).Kinetic energy
Question 198. A tidal barrage is a barrier built over a___________________
  1.    River bed
  2.    River estuary
  3.    River end
  4.    River starting
 Discuss Question
Answer: Option B. -> River estuary
Answer: (b).River estuary
Question 199. The most nuclear fuel used in the world is________________
  1.    Thorium – 232
  2.    Uranium – 238
  3.    Uranium – 235
  4.    Plutonium – 239
 Discuss Question
Answer: Option C. -> Uranium – 235
Answer: (c).Uranium – 235
Question 200. The blades in wind turbines are connected to________________
  1.    Nacelle
  2.    Tower
  3.    Foundations
  4.    String
 Discuss Question
Answer: Option A. -> Nacelle
Answer: (a).Nacelle

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