Garbage in Garbage Out

Garbage in, garbage out Worksheet-4

Multiple-Choice Question:

31. Pollutant gases have an adverse effect on the environment and on our health. The amount of these gases has been steadily increasing over the years.

The table below shows the source and the amount of some pollutant gases produced by human activities:

Which one of the following statements is correct?

(a) Carbon dioxide is produced by industries

Garbage in, garbage out Worksheet-5

Multiple-Choice Question:

41. Which of the following gases is not a green house gas?

(a) H₂O vapour    (b) CH₄                (c) O₃                                (d) CO

42. Name the process in which a harmful chemical enters the food chain and gets concentrated at each level in the food chain.

(a) Bio-magnification                     (b) Pollution

Garbage in, garbage out Worksheet-6

Multiple-Choice Question:

51. Which of the following things can be recycled?

(a) Aluminum soda cans                 (b) Plastic milk jugs

(c) Cereal boxes                                (d) All of these

52. Mercury is a hazardous chemical. Which of the following does not contain mercury?

(a) Fluorescent light bulbs             (b) Thermometers