Everyday Science Examination 1974

Time allowed: 2 hours
Maximum marks: 50                                                              

Note: (i) Attempt any ten questions.
(ii) Each question carries 5 marks.

1.   What are the functions of various parts of a plant?
2.   Give a brief account of the nervous system of the human body.
3.   Describe the principle of nuclear chain reaction.
4.   Explain the factors which determine the climate of a place.
5.   Describe the difference between acid, an alkali and a salt.1
6.   What are the causes and effects of environmental pollution?
7.   Describe the main ingredients of our food What is meant by balanced diet?
8.   Explain the c1eansin action 0f soap.
9.   Why is the color of the sky blue?
10.   Describe  the action of a chemical type of lire-extinguisher.
11.   Why do leaves change color in autumn?
12.   What is the difference between bacteria and viruses? Give two examples of each.
13.   What  first-aid should be given in case a person’s clothing catches fire?
14.   Describe the causes and early symptoms of tuberculosis.
15.   How does the human ear function?