Class VII

Kyoto Protocol agreement signed by participating countries and became legally binding in
  1. 1982
  2. 2005
  3. 1990
  4. 2010
Waste which takes 80 to 100 years to be decomposed in landfill is
  1. aluminum can
  2. paper bag
  3. plastic bag
  4. disposable diaper
Way in which plants die because of dropped level of oxygen is classified as
  1. eutrophication
  2. allotrophication
  3. oxygenation
  4. de-oxygenation
Chemical substance used to destroy weeds in crops is called
  1. herbicides
  2. carob-oxides
  3. monoxides
  4. pesticides
Harmful substance released by power plants and cars is
  1. carbon dioxide
  2. oxygen
  3. potassium
  4. magnesium
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LKG - 12th

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