Q. The layers such as sand and gravel which allow the water to pass through them are known as ?

  • (A) previous layers
  • (B) aquifers
  • (C) water bearing strata
  • (D) all of these
πŸ’¬ Discuss
βœ… Correct Answer: (D) all of these

Q. The colour of water is expressed in numbers of a ?

  • (A) silica scale
  • (B) platinum cobalt scale
  • (C) po value
  • (D) none of these
πŸ’¬ Discuss
βœ… Correct Answer: (B) platinum cobalt scale

Q. The formula, F = R - K(1.8T + 32) for obtaining the annual run-off is known as ?

  • (A) Justin's formula
  • (B) Vermule's formula
  • (C) Inglis formula
  • (D) Khosla's formula
πŸ’¬ Discuss
βœ… Correct Answer: (D) Khosla's formula

Q. Which of the following belongs to homologous series of alkynes C6H6, C2H6, C2H4, C3H4 ?

  • (A) C2H6
  • (B) C2H4
  • (C) C3H4
  • (D) C6H6
πŸ’¬ Discuss
βœ… Correct Answer: (C) C3H4

Q. The horizontal tunnels constructed at shallow depths along the banks of a river to intern ground water table are called ?

  • (A) canals
  • (B) infiltration galleries
  • (C) springs
  • (D) lakes
πŸ’¬ Discuss
βœ… Correct Answer: (B) infiltration galleries

Q. Which of the following formula is used for computing the quantity of water for fire demand ?

  • (A) Freeman's formula
  • (B) Kuichling formula
  • (C) Buston's formula
  • (D) all of these
πŸ’¬ Discuss
βœ… Correct Answer: (D) all of these

Q. Which of the following statement is correct ?

  • (A) The sub-surface sources are not affected by draught
  • (B) Infiltration galleries are most suitable for increasing the surface source supply, in dry season
  • (C) The rate at which water percolates into well under safe maximum critical depression head is called yield of well
  • (D) all of the above
πŸ’¬ Discuss
βœ… Correct Answer: (D) all of the above

Q. The domestic use of water amounts to ............ of the total water requirements per capita per ?

  • (A) 20%
  • (B) 30%
  • (C) 40%
  • (D) 50%
πŸ’¬ Discuss
βœ… Correct Answer: (D) 50%

Q. The vertical wells provided along the banks of a river to draw ground water in dry season are called ?

  • (A) open wells
  • (B) tube wells
  • (C) artesian wells
  • (D) infiltration wells
πŸ’¬ Discuss
βœ… Correct Answer: (D) infiltration wells

Q. The presence of hydrogen sulphide in water causes ?

  • (A) softening
  • (B) alkalinity
  • (C) acidity
  • (D) bad taste
πŸ’¬ Discuss
βœ… Correct Answer: (C) acidity

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