Question 11 MarkBurning of a candle involves both physical and chemical changes.AnswertrueView full question & answer→
Question 21 MarkMagnetization of iron is a chemical change.AnswerFalse. Magnetization of iron is a physical change.View full question & answer→
Question 41 MarkBurning of magnesium ribbon is an irreversible change.AnswertrueView full question & answer→
Question 51 MarkThe occurrence of tide is a man-made change.AnswerFalse. The occurrence of tide is a natural change.View full question & answer→