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CHEMISTRY MCQs

Total Questions : 2589 | Page 56 of 259 pages
Question 551. Which of the following is secondary air pollutant ?
  1.    Photochemical smog
  2.    NO2
  3.    Dust particles
  4.    SO2
 Discuss Question
Answer: Option D. -> SO2
Question 552. The gas liberated in the Bhopal gas tragedy was:
  1.    Pheynl isocynate
  2.    Acetylene
  3.    Ethylene
  4.    Methyl isocynate
 Discuss Question
Answer: Option D. -> Methyl isocynate
Question 553. Heavy metal pollution of water is caused by:
  1.    Paints
  2.    Wood burning
  3.    Acid Plants
  4.    Domestic sewage
 Discuss Question
Answer: Option A. -> Paints
Question 554. Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful
  1.    Solar ultraviolet radiation
  2.    Solar infrared radiation
  3.    CO2 in the air
  4.    SO2 in the air
 Discuss Question
Answer: Option A. -> Solar ultraviolet radiation
Question 555. 'Bhopal gas tragedy' 1984 is related to which gas
  1.    Aluminium Phosphide
  2.    Methyl bromide
  3.    Methyl isocyanate
  4.    Carbon dioxide
 Discuss Question
Answer: Option C. -> Methyl isocyanate
Question 556. When a nutrient like fertilizer is present in large quantities in a water bodies, plants grow and decay in large numbers because of suffocation of pond that does not leave enough oxygen needed to support life. This type of pollution is called
  1.    Smog
  2.    Eutrophication
  3.    Green house effect
  4.    None of these
 Discuss Question
Answer: Option B. -> Eutrophication
Question 557. Which of the following is the correct sequence of countries in terms of maximum carbon dioxide emission?
  1.    China, USA, European Union, India
  2.    USA, India, China, European Union
  3.    China, India, European Union, USA
  4.    European Union, China, USA, India
 Discuss Question
Answer: Option A. -> China, USA, European Union, India
Question 558. The function of skimming tank in sewage treatment is to remove
  1.    Oil and fatty substances
  2.    Suspended solids
  3.    Gritty substances
  4.    Inorganic substances
 Discuss Question
Answer: Option A. -> Oil and fatty substances
Question 559. Acid rain is caused due to emission of which of the following into the atmosphere ?
  1.    Oxides of nitrogen and sulphur
  2.    Carbon dioxide and carbon monoxide
  3.    Ozone and carbon dioxide
  4.    Carbon monoxide and nitrogen
 Discuss Question
Answer: Option A. -> Oxides of nitrogen and sulphur
Question 560. The depletion of Ozone layer is mainly due to
  1.    Volcanic eruptions
  2.    Aviation fuels
  3.    Radioactive rays
  4.    Chlorofluorocarbons
 Discuss Question
Answer: Option D. -> Chlorofluorocarbons

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