Pollution of Air & Water

Pollution of Air and Water Worksheet-1

1. Air pollution has harmful effect on the environment. Which of the air pollutant is wrongly matched with its corresponding effect?

(a) Dust - reduces photosynthesis in green plants

(b) Carbon monoxide - reduces oxygen in the blood

(c) Chlorofluorocarbon - damages nerves and tissues

(d) Nicotine - hardens and narrows blood vessels

2. Air pollution has several causes. Which of the following is not responsible for causing air pollution?

(a) Establishing forest reserves

(b) Using pesticides in farms

(c) Developing housing estates

(d) Quarrying for limestone

Pollution of Air and Water Worksheet-2

1. Passengers traveling in an aeroplane are advised not to carry fountain pens because at higher altitudes:

(a) Ink vaporizes due to high external pressure.

(b) Solidification of ink takes place due to very low external pressure.

(c) Pressure within the tube is more than the external pressure and causes leakage of ink.

(d) Pressure within the tube is lesser than the external pressure and causes leakage of ink.

2. Gases can be liquefied, and liquid gases have different industrial applications. Which among the following gases has lowest boiling point?

(a) O₂                  (b) N₂                 (c) F₂                  (d) Ne

Pollution of Air and Water Worksheet-3

1. Honorable Supreme Court of India issued notices to the state governments in India in the year 2005 to conserve the forest reserves and the environment for a sustainable development. What does Conservation of  the environment mean?

(a) not destroying natural resources

(b) not lowering the quality of the environment

(c) changing natural resources from its original state

(d) preserving the condition of the nature that has been

2. India is working with Japan, by using the Japanese technology to clean ‘The Ganga’ river in the state of Uttar Pradesh. What is the main source of water pollution in Uttar Pradesh?

(a) Discharge of untreated sewage

(b) Bathing