BASIC SCIENCE GENERAL KNOWLEDGE QUESTIONS AND ANSWERS 41 to 45

41. Which of following substances undergoes chemical change on heating ?

it can dissociate into equal number of hydrogen ions

42.Which of following substances undergoes chemical change on heating ?

Lead Nitrate

43.Water is neither acidic nor alkaline because

it can dissociate into equal number of hydrogen ions

44.PVC is obtained by the polymerisation of

Vinyl Chloride

45.Which of the following metals can displace zinc from a solution of zinc sulphate ?

Magnetism

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