Question 11 MarkWhen a candle burns, both physical and chemical changes take place.AnswertrueView full question & answer→
Question 21 MarkStretching of rubber band is not a physical change.Answerfalse, stretching of rubber band is a physical change.View full question & answer→
Question 31 MarkCondensation of steam is not a chemical change.AnswertrueView full question & answer→
Question 41 MarkIron and rust are the same substances.Answerfalse, iron and rust are two different substances.View full question & answer→
Question 51 MarkIron pipes coated with zinc do not get rusted easily.AnswertrueView full question & answer→
Question 61 MarkFormation of manure from leaves is a physical change.Answerfalse, formation of manure from leaves is a chemical change.View full question & answer→
Question 71 MarkCutting a log of wood into pieces is a chemical change.Answerfalse, cutting a log of wood into pieces is a physical change.View full question & answer→
Question 81 MarkCooking of rice is a physical change.Answerfalse, cooking of rice is a chemical change.View full question & answer→
Question 91 MarkWithin our bodies, food is digested due to chemical reaction.AnswertrueView full question & answer→
Question 111 MarkWe can separate salt from salt water solution using crystallisation.AnswertrueView full question & answer→
Question 121 MarkIn cutting of paper, a new substance is formed.AnswerfalseView full question & answer→