A B C D B Skill assessed Marks Understanding basic knowledge 23eEMA0102802092

A b c d b skill assessed marks understanding basic

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A B. C. D. ##B## Skill assessed Marks Understanding basic knowledge 2 |!|3eEMA0102802092|!| Which of the following substances contains alkalis? A.YoghurtB.Soft drinksC.Glass cleanerD.Tea ##C## Skill assessed Marks Understanding basic knowledge 2 © Aristo Educational Press Ltd 2013 73
Understanding Integrated Science for the 21st Century (3rd Edition) – Form 2 Unit 10: Acids and Alkalis (New Questions Update in 2013) © Aristo Educational Press Ltd 2013 74
Understanding Integrated Science for the 21st Century (3rd Edition) – Form 2 Unit 10: Acids and Alkalis (New Questions Update in 2013) |!|3eEMA0102802093|!| Which of the following fruits contain tartaric acid? ##D##Skill assessedMarksUnderstanding basic knowledge |!|3eEMA0102803094|!|Which of the following substances can turn blue litmus paper red?(1)Apple juice(2)Glass cleaner(3)Black coffee 2 ##B## Skill assessed Marks Understanding concepts 2 © Aristo Educational Press Ltd 2013 75
Understanding Integrated Science for the 21st Century (3rd Edition) – Form 2 Unit 10: Acids and Alkalis (New Questions Update in 2013) |!|3eEMA0102803095|!| Grapefruits and grapes are common fruits. Which of the following statements are correct?(1)Both are citrus fruits.(2)Both contain acids.(3)Their juice can turn blue litmus paper red. ##C## Skill assessed Marks Understanding concepts 2|!|3eEMA0102803096|!|Which of the following substances usually has a pH value less than 7? A.Lime waterB.Distilled waterC.Body shampooD.Toothpaste solution ##C##Skill assessedMarksUnderstanding concepts |!|3eEMA0102803097|!|Which of the following statements about universal indicator is/are correct?(1)It appears red in strong alkalis.(2)It is a mixture of several indicators.(3)It can show how acidic or alkaline a substance is. 2 © Aristo Educational Press Ltd 2013 76
Understanding Integrated Science for the 21st Century (3rd Edition) – Form 2 Unit 10: Acids and Alkalis (New Questions Update in 2013) ##C## Skill assessed Marks Understanding concepts 2 © Aristo Educational Press Ltd 2013 77
Understanding Integrated Science for the 21st Century (3rd Edition) – Form 2 Unit 10: Acids and Alkalis (New Questions Update in 2013) |!|3eEMA0102803098|!| The following table shows the pH values of four solutions measured by a pH meter.SolutionPQRSpH value measured bythe pH meter7.005.0711.908.70(a)Which solution is the most acidic?

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