31. Substance used as an anti-freeze in radiators of automobiles is
32. One of the occupational health hazards commonly faced by the workers of ceramic, pottery of glass industries is
33. Which of the following is an example of fossil fuel?
34. Detergents are
35. Arsenic drugs are mainly used in the treatment of
36. lodised salt is beneficial for
37. Chemical name of bleaching powder is
38. Aspirin is chemically known as
39. The substance that is added to make natural rubber strong and more bouncy is
40. The chemical name of 'common salt' is
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