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Q1. Extent of a chemical reaction depends on which all parameters?

Solution

Extent of any reaction depends on physical parameters like temperature, pressure and use of catalyst.

Q2. What is green fuel?

Solution

Fuel obtained from plastic waste has high octane rating. It contains no lead and is known as green fuel.

Q3. What is green chemistry?

Solution

Green chemistry is a strategy for controlling environmental pollution. It utilizes the existing knowledge and practices so as to bring about reduction in the production of pollutants.

Q4. How the industrial wastes are sorted out?

Solution

The industrial wastes are sorted out as biodegradable and non-degradable wastes.

Q5. What is smog?

Solution

The word smog is derived from smoke and fog and is the most common example of air pollution.

Q6. What are the harmful effects of acid rain?

Solution

Acid rain is harmful for agriculture, trees and plants as it dissolves and washes away the nutrients needed for their growth. It causes respiratory ailments in human beings and animals. When acid rain flows as ground water it affects plants and animal life in aquatic ecosystem. It corrodes water pipes resulting in the leaching of heavy metals as iron, lead into the drinking water. Acid rain damages the building and structures made of stone or metal.

Q7. What is acid rain?

Solution

When acid from the atmosphere is deposited on the earth's surface it is known as acid rain. When pH of the rain water drops below 5.6 it is called as acid rain.

Q8. How green chemistry can be used in day-to-day life?

Solution

Hydrogen peroxide is used to bleach clothes in laundry with no contamination of the ground water, and this process of dry cleaning of clothes is an example of green chemistry application in day-to-day life.

Q9. What are the strategies for controlling environmental pollution?

Solution

Strategies for controlling environmental pollution can be (i) Waste management i.e. reduction of the waste and proper disposal, also recycling of materials and energy. (ii) Adopting methods in day-to-day life, which results in the reduction of the environmental pollution.

Q10. What are CFCs?

Solution

CFCs are chlorofluorocarbons. These are man-mad industrial chemicals used in air conditioningetc, and are damaging the ozone layer.