The drug used in contraceptives is

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4. Sulphur addition in soap is done to
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10. RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically
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12. Pick out the wrong statement.
13. Yellow glycerine is made into white, using
14. Permanent hardness of water can be removed by
15. Which of the following contains least amount of N2?
16. Which of the following is not produced commercially from sea water?
17. Main use of hydrazine is
18. Hydrochloric acid is also known as
19. Permanent hardness of water can be removed by
20. Linde process of gas liquefaction employs
21. Free alkali in a toilet soap is __________ that in a laundry shop.
22. Litharge is
23. Poly Tetrafluoroethylene (P.T.F.E.) is known as
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27. The temperature in the calcium carbide furnace is __________ °C.
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