chemistry

CLASS 10^TH   CHEMISTRY AND INDUSTRY BITS

1. Cement was invented by _______

2. In the cement manufacture lime stone provides _______

3. In the cement manufacture clay provides _______ and _______

4. Gray hard balls of cement is called _______

5. Glass may be considered glass is called _______

6. The process of cooling glass is called _______

7. Cullet is _______

8. _______ gives blue colour to the glass.

9. Ceramics are articles made from _______

10. The word ceramic is derived from Greek word _______

11. The polymeric organic substance is commonly known as _______ resin.

12. Milk Protein "casein'' is used as _______

13. _______ is the main constituent in the natural fibres.

14. _______ are used as cosmetics for skin.

15. The cold cream is an _______ of oil and water.

16. _______ is the largest selling single item among the cosmetics.

17. The first synthetic dye was prepared by _______

18. Perkin violet dye, commonly known as _______

19. Mordnat is _______

20. Direct consumption of drug may be difficult to its _______

21. Petrol is _______ than water.

22. Cooking gas is also known as _______

23. Dyes which has NO2 chromophore is _______

24. Dyes which has NO chromophore is _______

25. In addition polymerization acrylonitride will becomes _______

26. Crude oil is a stable mixture of _______ and _______

27. In the fractionation of crude petroleum the residue cake called _______ asphalt.

28. Generally the heavy oils are used as _______

29. _______ soften on heating.

30. _______ is a hormone insulin

31. Chemicals derived from the fractions of petroleum are called _______

32. _______, _______ and _______ are natural nutrients