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ICSE Class 10 Elements, Compounds and Mixtures — practice questions

Explore 50 free Elements, Compounds and Mixtures questions in ICSE Class 10 Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Elements, Compounds and Mixtures questions and exercises with answers

Showing questions 1–30 of 50.

Litmus in a basic solution turns:Read the answer and worked solution →Solutions that change neither red nor blue litmus are:Read the answer and worked solution →Vinegar contains which acid?Read the answer and worked solution →Soil that is too acidic is treated with:Read the answer and worked solution →Match the acid to its sourceRead the answer and worked solution →Sort by natureRead the answer and worked solution →Tap the acidic onesRead the answer and worked solution →Complete the litmus ruleRead the answer and worked solution →Acids and bases bingoRead the answer and worked solution →Which two metals are the most malleable?Read the answer and worked solution →Which metal is a liquid at room temperature?Read the answer and worked solution →Which two metals have very low melting points?Read the answer and worked solution →Coating iron with a thin layer of zinc is called:Read the answer and worked solution →Tap the non-metalsRead the answer and worked solution →Spot the odd one outRead the answer and worked solution →Complete the property ruleRead the answer and worked solution →Metals and non-metals bingoRead the answer and worked solution →Which pair contrasts compound and mixture composition?Read the answer and worked solution →A salt solution has the same composition throughout. It is?Read the answer and worked solution →Sand settles below water. How is the whole sample classified?Read the answer and worked solution →Which observation supports classifying air as a mixture?Read the answer and worked solution →A sand-water mixture is filtered. What stays on filter paper?Read the answer and worked solution →What passes through ordinary filter paper from salt solution?Read the answer and worked solution →Salt dissolves; chalk does not. Recover both from their dry mix by?Read the answer and worked solution →Chalk residue carries salt solution. Why wash it with clean water?Read the answer and worked solution →Recover sand, salt AND water from their mixture. Use filtration, then?Read the answer and worked solution →Kerosene and water make two layers. Separate them with?Read the answer and worked solution →Which property enables a sieve to separate two dry solids?Read the answer and worked solution →Grains are 0.5 mm and 3 mm wide. Which sieve opening separates them?Read the answer and worked solution →On heating, one solid vaporises directly; sand stays. Use?Read the answer and worked solution →

Worked practice questions

Litmus in a basic solution turns:

  1. Grey
  2. Blue
  3. Red
  4. Pink
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Correct answer: B. Blue

1. Litmus gives one colour in acids and another in bases. 2. In an acid it turns red. 3. Added to a basic solution, it turns blue. 4. So the answer is blue. _Source: syllabus Science, Ch 4 'Acids, Bases and Salts'_

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Solutions that change neither red nor blue litmus are:

  1. Basic
  2. Salty
  3. Neutral
  4. Acidic
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Correct answer: C. Neutral

1. Some solutions leave both litmus papers unchanged. 2. They are neither acidic nor basic in nature. 3. Such solutions are known as neutral solutions. 4. So the answer is neutral. _Source: syllabus Science, Ch 4 'Acids, Bases and Salts'_

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Vinegar contains which acid?

  1. Oxalic
  2. Citric
  3. Acetic
  4. Lactic
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Correct answer: C. Acetic

1. Vinegar is one of the sour substances used at home. 2. Its acid is not the one found in curd or in lemons. 3. Vinegar contains acetic acid. 4. So the answer is acetic acid. _Source: syllabus Science, Ch 4 'Acids, Bases and Salts'_

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More Chemistry topics

Organic ChemistryPeriodic Table & Periodic PropertiesMetallurgyMole Concept and StoichiometryAnalytical ChemistryElectrolysisAcids, Bases and SaltsStudy of Compounds: hydrogen chloride, ammonia, nitric acid, sulphuric acid