11. Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of
12. Oxygen is produced by fractionation of air using __________ process.
13. Pick out the wrong statement.
14. Electric bulbs are made of __________ glass.
15. __________ is produced using molasses as the starting raw material.
16. Sucrose content in cane sugar may be around __________ percent.
17. Percentage of alcohol in beer may be around __________ percent.
18. Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because
19. Aryl benzene sulphonate (ABS) is a
20. Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?
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