Puzzle 18

3. Which group of animals have scales?
6. What kind of beam of light is formed by a flashlight of a torch
10. who is regarded as father of modern chemistry
12. Bleaching action of chlorine is by
13. Which pigment gives the leaves its green color?
14. Through the reaction of sugar and sulphuric acid ----- is obtained in its pure form
16. The value of the velocity of sound is the lowest in ------
18. most reactive among the halogens
19. name of a frog’s young one?

1. Kilowatt hour (KWH) unit is ---
2. gas used in cigarette lighters
4. part of the skeletal system protects the brain?
5. if any rock from earth is taken to the moon, its weight will ----
7. controls the amount of light entering the eye
8. the force due to which the body is pulled towards the center of the earth
9. Where does our food collect after we chew and swallow it?
11. What is a long coil containing a large number of close turns of insulated copper wire called?
13. Maxwell’s right-hand thumb rule is also known as ------ rule
15. when the Left Ventricle in the human heart contracts, the blood moves to the
17. biological indicator of pollution of sulphur dioxide is ----