CBSE Questions for Class 8 Chemistry Pollution Of Air And Water Quiz 7 - MCQExams.com

Which of the following is true about acid rain?
  • Acid rain damages buildings.
  • Acid rain increases the acidity of the soil.
  • Acid rain reduces fertility of the soil.
  • All of the above
Harmful gases like $$SO_2$$, which harm the Taj Mahal are present in:
  • industrial areas
  • forests
  • highly populated areas
  • hills
Which of the following is correct about acid rain?
  • Rain which is acidic in nature
  • Rain which is basic in nature
  • Rain which is neutral in nature
  • All of the above
Acid rain is a mixture of:
  • Sulphuric acid with hydrochloric acid and nitric acid with nitrous acid
  • Sulphuric acid with sulphurous acid and nitric acid with hydrochloric acid
  • Sulphuric acid with sulphurous acid and nitric acid with nitrous acid
  • Sulphuric acid with nitrous acid and nitric acid with sulphurous acid
Among the following, which is a greenhouse gas?
  • $$H_2$$
  • $$O_2$$
  • $$H_2O$$ vapour
  • $$HCl$$

Drinking water can be filtered by:
  • sedimentation
  • filtration
  • chlorination
  • All of the above
Water can be purified by adding:
  • baking soda
  • sodium chloride
  • calcium
  • chlorine

The chemical method used for the purification of water is:
  • chlorination
  • boiling
  • Both A and B
  • None of the above
Which of the following is/are damages caused by acid rain?
  • It depletes the nutrients of the soil, increases the acidity of the soil, and reduces fertility.
  • It destroys marine life due to change in pH of the environment.
  • It causes material damage.
  • All of the above

Greenhouse effect is necessary for:
  • evaporation of water
  • formation of clouds causing rains
  • evolution of life on earth
  • all of the above
Acid rain pollutes:
  • air
  • water
  • soil
  • All of these
Which of the following methods is not a household method used for making drinking water safe?
  • Distillation
  • Boiling
  • Filtration
  • Chlorination

Which of the following measures can be taken up to control air pollution?
  • Planting trees
  • Travelling to school on a bicycle or on public transport or carpooling
  • Restricting cigarette smoking
  • All of the above
Which of the following gasses contribute to greenhouse effect?
  • $$CO_2$$
  • $$CH_4$$
  • $$CFC$$
  • All of the above
The warming of the earth's surface due to the heat trapping effect of the greenhouse gases is known as:
  • greenhouse effect
  • global warming
  • warming effect
  • All of the above

Which of the following are air pollutants?
  • Soot
  • Smoke
  • CFCs
  • All of the above
Factories like Mathura Oil Refinery produce pollutants like:
  • sulphur dioxide
  • nitrogen dioxide
  • hydrogen chloride
  • both a and b
The major threat to Taj Mahal is:
  • acid rain.
  • hydrogen peroxide.
  • Both a and b.
  • None of the above.
Which of the following is a greenhouse gas?
  • Nitrogen
  • Oxygen
  • Ozone
  • Helium
Which of the following steps were ordered by the Supreme Court to save the Taj Mahal?
  • Use of cleaner fuels
  • Use of unleaded petrol in automobiles
  • Both A and B
  • None of above
Argon is a greenhouse gas. 
  • True
  • False
Which of the following methods can be used for purification of water?
  • Physical treatment
  • Removal of suspended impurities
  • Chemical treatment
  • Both B & C
The pollutants in the air are:              
  • melting white marbles of Taj Mahal.
  • discoloring white marbles of Taj Mahal.
  • forming cracks in the marbles of Taj Mahal.
  • All of the above
Greenhouse effect is a major cause of:
  • global warming
  • reduction of temperature
  • acid rain
  • all of above
In order to save the Taj Mahal, the Supreme court has ordered the industries and vehicles to switch to:
  • LPG
  • CNG
  • unleaded petrol
  • All of the above
_________ is a gas in the atmosphere that traps radiation.
  • Global gas
  • Greenhouse gas
  • Green gas
  • Noble gas
Macroscopic water pollutants include:
  • E. coli bacteria
  • plastic
  • lead
  • ammonia
Which of the following research found that Ganga is one of the ten most endangered rivers of the world?
  • World Wide Fund For Nature
  • World Wild Nation
  • World River Organization
  • World Health Organization
______ was launched in 1985 to save river Ganga.
  • Ganga River Plan
  • Ganga Action Plan
  • Ganga Organization
  • Save Ganga Plan
Which of the following gases damages the ozone layer?
  • Carbon monoxide
  • Sulphur dioxide
  • CFCs
  • Nitrogen
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