General Science Class 5th MCQs=588

• Environment: Land, water, air and our surroundings make our environment.
• Pollution: Pollution is a harmful change in our environment.
• The substances which cause pollution are called pollutants.
• There are three main type of pollution.            (1) Air Pollution   (2) Land Pollution  
  (3) Water Pollution
• Air pollution causes Asthma, skin and eye allergies, headache and lung diseases.
• Ozone layer protects earth from the sun harmful rays.
• Air pollution is the main cause of depletion of ozone layer.
• Bio-degradable Materials: Those materials which degraded by nature. Example of Bio-degradable materials are dead animals, plants, and left over foods.
• Non-Biodegradable materials: Those materials cannot be degraded by natural methods. Plastic bags, empty cans, electricity wire, fused bulbs and broken parts of machines are no biodegradable materials.
• The main cause of air pollution is burning of fuels.
• The 3R are Reduce, Reuse and Recycle.

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Things around us make our……….
a) Habitat
b) Environment
c) Colony
d) Home

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Living things get from their environment.
a) Food
b) Oxygen
c) Water
d) All above

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The addition of harmful and unwanted materials in the environment are called;
a) Sanitation
b) Pollution
c) Global warming
d) None of these

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The unfavorable alteration of environment due to human activities is termed as…
a) Ecological disturbance   
b) Pollution
c) Catastrophe
d) All of these

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Substances that cause pollution are called……
a) pollution
b) Polly
c) pollutants
d) all of these

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