Pollution of Air and Water Worksheet-2

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

3. The concept of Organic Farming is taking shape in a rapid rate. This is due to the ill effects the chemical fertilizers have on our environment. The leaching of chemical fertilizers into rivers and ponds cause:

(a) the rapid growth of algae

(b) air pollution

(c) an increase in the oxygen concentration of the water

(d) an increase in number of aquatic organisms

4. Late Kalpana Chawala, the Indian astronaut who worked with NASA during its Discovery mission, filled a balloon with air in earth, and carried it in space, what happened there?

(a) The balloon expands because the atmospheric pressure of the moon is slightly lower than that of earth.

(b) The balloon bursts because the atmospheric pressure of the moon is much more than that of earth.

(c) The balloon contracts because the atmospheric pressure of the moon is much lower than that of earth.

(d) No change is observed because change of atmospheric pressure has no effect on the balloon.

5. The incessant use of the air-conditioning and the refrigeration system is blamed for different environmental hazards. Which of the following is used in air conditioning and refrigeration system?

(a) CO                (b) CO₂               (c) CFCs             (d) O₃

6. The Geologist of India found a layer of atmosphere that is just above the earth’s surface. It is known as

(a) Thermosphere                        (b) Troposphere

(c) Stratosphere                            (d) Mesosphere

7. Taj Mahal is also referred to as the Wonder in Marble. Monuments made from marble gets discolored due to:

(a) sulphur dioxide pollution     (b) carbon monoxide pollution

(c) pesticide pollution                 (d) dust particles

8. Dr. Hargovind Khorana, a Nobel Laureate and great scientist of Indian Origin, in the United States found a new element ‘X’. He performed following reactions with that element -

X + O₂ → Y,

Y + H₂O → Z

Z turns red litmus to blue then X would be-

(a) Ca                 (b) S                    (c) C                    (d) P

9. Mr. Bean forgot his bicycle in the open air at rainy season and goes for a winter vacation. When he returned from the vacation found that there is a dark brown color on his bicycle. What was it?

(a) Galvanization of Iron            (b) Rusting of Iron

(c) Electroplating of Iron           (d) Tinning of Iron

10. A major gas tragedy took place in Bhopal, India on December 2^nd-3^rd midnight in 1984 which is referred to as the ‘Bhopal Gas Tragedy’, when a dense cloud of deadly Methyl Isocyanate Gas leaked from Union Carbide Chemical Plant. It resulted in huge loss of innocent lives. Which of the following dissolves more rapidly in blood hemoglobin than oxygen, which can also prove fatal to humans?

(a) Ozone                                        (b) Nitrous oxide

(c) Sulphur dioxide                      (d) Carbon monoxide

Answer Key:

(1)-(c); (2)-(d); (3)-(a); (4)-(b); (5)-(c); (6)-(b); (7)-(a); (8)-(a); (9)-(b); (10)-(d)