Question
How can we control air pollution?

Answer

  1. From domestic combustion:Reducing pollution from domestic cooking; clean cooking- kerosene as a desirable cooking fuel in rural areas.
  2. From Industries: Measures for controlling industrial air pollution - technological measures (energy efficient devices, clean technologies), meteorological controls; zoning strategy; penalties and subsidies; Case Study: The Taj Trapezium.
  3. From Vehicles: Vehicle emission control - modify engine design (catalytic converters, four stroke engines), clean fuels, public transport options, traffic management, economic policy measures.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

State two methods of contraception, one a barrier method and one which is not a barrier method. For each method named give two advantages and one disadvantage of the method.
Draw a well-labelled diagram to show the anaphase stage of mitosis in plant cells having four chromosomes.
The figure given below represents an experimental set up with a weighing machine to demonstrate a particular process in plants. The experimental set up was placed in bright sunlight. Study the diagram and answer the following questions:

(i) Name the process intended for the study.
(ii) Define the above-mentioned process.
(iii) When the weight of the test tube (A & B) is taken before and after the experiment, what is observed ? Give reasons to justify your observation in A & B.
(iv) What is the purpose of keeping the test tube B in the experimental setup?
Explain the occurrence of vestigial organs on the basis of Lamarck's theory of use and disuse.
Given below is a schematic representation of the circulatory system in man. Study the same and answer the questions that follow:

(i) Label the parts 1 to 4 indicated in the diagram.
(ii) Give one difference between parts 1 and 2 based on:
(a) their structure
(b) the nature of blood flowing through them.
(iii) What is the specific name of the type of blood circulation that takes place between the heart and the lungs?
(iv) Name the valve found at the beginning of the part labeled 3.
With the help of an experiment, prove that roots ane more positively hydrotropic than geotropic.
Draw a neat labeled diagram to show how hypermetropia can be rectified.
Give Reasons for the following:
Land plants die if their roots remain waterlogged.
The diagram below represents a stage during cell division. Study the same and then answer the question that follow:

a) Name the parts labelled 1, 2, and 3.
b) Identify the above stage and give a reason to support your answer.
c) Mention where in the body this type of cell division occurs.
d) Name the stage prior to this stage and draw a diagram to represent the same.
The diagram alongside represents a certain defect of vision of the human eye.
(i) Name the defect.
(ii) Describe briefly the condition in the eye responsible for the defect.
(iii) Redraw the figure by adding a suitable lens correcting the defect. Label the parts through which light-rays pass.
(iv) What special advantage do human beings derive in having both eyes facing forward?