Assertion (A) The ozone layer in stratosphere filter out the UV rays present in incoming sunlight.
Reason (R) The ozone present in the troposphere creates pollution problems and smog is rich with it.
Important Questions on Environment & Ecology
Consider the following:
1. Photosynthesis
2. Respiration
3. Decay of organic matter
4. Volcanic action
Which of the above 'adds' carbon dioxide to the carbon cycle on Earth?
Consider the following statements
1. Kyoto Protocol came into force in the year 2005.
2. Kyoto Protocol deals primarily with the depletion of the ozone layer.
3. Methane as a green house gas is more harmful than carbon dioxide.
Which of the statements given above is/are correct?
Microbial fuel cells are considered as the sources of sustainable energy. Why?
1. They use living organisms as catalysts to generate electricity from certain substrates.
2. They use a variety of inorganic materials as substrates.
3. They can be installed in wastewater treatment plants to cleanse water and produce electricity.
Which of the statement(s) given above is/are correct?
1. It inactivates/kills the harmful microorganisms in water.
2. It removes all the undesirable odours from the water.
3. It quickens the sedimentation of solid particles, removes turbidity and improves the clarity of water.
Which of the statements given above is/are correct?
