21. Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used
22. Shrinkage volume in cement setting does not depend upon the
23. Maleic anhydride is produced by catalytic oxidation of
24. Which of the following is not a product of coal tar distillation?
25. Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it
26. Pick out the wrong statement.
27. __________ of quicklime produces slaked lime.
28. Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils
29. Which of the following fuel gases contains maximum amount of carbon monoxide?
30. Potassium is kept & transported under
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