The Taj Mahal is threatened due to the effect of
Options
(a) oxygen (b) chlorine (c) hydrogen (d) sulphur dioxide
Correct Answer:
sulphur dioxide
Explanation:
The Taj Mahal is built with white marble and […]
The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen, approximately by
Options
(a) 2 times (b) 200 times (c) 20 times (d) 1000 times
Correct […]
Water blooms are formed by
Options
(a) Planktonic algae (b) Lemna (c) Rhizopus (d) Wolffia
Correct Answer:
Planktonic algae
Explanation:
No explanation available. Be the first to write the explanation for this question […]
What is increase in sewage content of water body
Options
(a) BOD increases (b) nutrient content increases (c) diversity of fanua decreases due to deficient levels of oxygen (d) all of the above
Which group of gases cause green house effect?
Options
(a) CFCs, O₂, water-vapour, H₂ (b) CFCs, CO₂, CH₄, N₂O (c) O₂, CH₄, N₂O, water-vabour (d) N₂O, O₂, CH₄, water-vabour
Correct Answer:
CFCs, CO₂, […]
Which of the following is a chlorofluorocarbon?
Options
(a) CFSO₂ (b) CF₂CL₂ (c) FCLCO₂ (d) CIF₂C
Correct Answer:
CF₂CL₂
Explanation:
No explanation available. Be the first to write the explanation for this question […]
Which of the following is an example of regional pollution?
Options
(a) smog (b) acid rain (c) O₃ layer depletion (d) both smog and acid rain
Correct Answer:
both smog and acid rain
Which of the following is incorrect?
Options
(a) noise pollution does not leave any residue in the environment (b) noise pollution creates nervous disorders (c) plants are efficient absorbers of noise of low […]
Which of the following is not a green house gas?
Options
(a) methane (b) oxygen (c) water vapour (d) carbon monoxide
Correct Answer:
oxygen
Explanation:
No explanation available. Be the first to write […]
Which one of the following acts as secondary pollutant?
Options
(a) Br₂ (b) Cl₂ (c) NO₂ (d) HNO₃
Correct Answer:
HNO₃
Explanation:
No explanation available. Be the first to write the explanation for […]
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