Question 61 MarkSoap nut and soap pod contain a chemical named ………………. .AnswerSaponinView full question & answer→
Question 71 Mark………………. and ………………. are the natural detergent in common use.AnswerSoap nut, Soap podView full question & answer→
Question 81 MarkThe property of a substance of spreading on a surface is called ………………. .Answersurface activityView full question & answer→
Question 91 Mark………………. in the toothpaste helps prevent tooth decay.AnswerFluorideView full question & answer→
Question 101 MarkThe principal ingredients of a toothpaste are ………………. and ………………. which remove the dirt on the teeth.AnswerCalcium carbonate, calcium hydrogen phosphateView full question & answer→
Question 111 MarkFor construction purposes …………… Cement is the most commonly used cement.(hard, white cement)Answerwhite cementView full question & answer→
Question 121 MarkSynthetic detergents can be used in …………… water as well.(hard, tooth decay)AnswerhardView full question & answer→
Question 131 MarkSoap is a salt of …………… and sodium hydroxide.(fatty acid, tooth decay)Answerfatty acidView full question & answer→
Question 141 MarkFluoride is used in toothpaste to prevent …………… ..(white cement, tooth decay)Answertooth decayView full question & answer→
Question 151 MarkThe substance that helps water to remove dirt from the surface of material is called …………… .(white cement, soap)AnswersoapView full question & answer→