1. The important metal used with iron to produce stainless steel is _____ .
2. Which gas is responsible for the swelling of bread?
3. The metal constituent of chlorophyll is _____ .
4. Which acid is used for etching glass?
5. Paraffin wax is _________ .
6. Solder is an alloy of _____ .
7. Alum is used as
8. Nuclear fuel in the sun is ______ .
9. Dead organisms are transformed into petroleum and natural gas ______ .
10. Organic Compounds are only soluble in _____ .
11. Which acid is used in soft drinks?
12. Which acid is present in Bee Sting?
13. Tooth enamel is made up of ______ .
14. The name ‘catalyst’ was given by _____ .
15. A polymeric substance used to make parachute is _____ .
16. What is used to avoid melting of ice?
17. Carbon occur in the nature in the purest form as?
18. Oxidation is defined as -----
19. In nuclear reactor, chain reaction is controlled by using _____ .
20. The radioactive element most commonly detected in humans is _____ .
21. Hydrogen bomb is based on the principle of _____ .
22. The ultrapure metal is obtained by _____ .
23. Most abundant metal in earth’s crust is ______ .
24. Balloons are filled with _____ .
25. The element common to all acids is _____ .
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