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ICSE Class 10 Calorimetry — practice questions — page 2

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

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Calorimetry questions and exercises with answers

Showing questions 31–50 of 50.

The gas evolved when an acid reacts with a carbonate turns lime water:Read the answer and worked solution →Baking soda (NaHCO₃) is used in antacid tablets mainly because it:Read the answer and worked solution →Which one of the following can be used as an acid-base indicator by a visually impaired student?Read the answer and worked solution →CuO + 2 HCl → CuCl₂ + H₂O shows that a metallic oxide behaves like a:Read the answer and worked solution →Hydrochloric acid and acetic acid of the same concentration are compared. Which is the stronger acid?Read the answer and worked solution →Baking soda, often used to relieve acidity, is chemically:Read the answer and worked solution →Calcium phosphate is present in tooth enamel. Its nature isRead the answer and worked solution →Litmus paper turns blue when dipped in a/an:Read the answer and worked solution →Farmers add slaked lime, Ca(OH)₂, to soil that is too:Read the answer and worked solution →A solution turns red litmus blue and has pH = 11. The solution is:Read the answer and worked solution →pH less than 7 indicates a solution that is:Read the answer and worked solution →A solution with a pH less than 7 is:Read the answer and worked solution →A solution with a pH greater than 7 is:Read the answer and worked solution →Acids produce which ion when dissolved in water?Read the answer and worked solution →Bases produce which ion when dissolved in water?Read the answer and worked solution →Neutralisation of an acid by a base produces:Read the answer and worked solution →Which of the following is a synthetic indicator used to test acids and bases?Read the answer and worked solution →On the pH scale, a neutral solution (such as pure water) has a pH of:Read the answer and worked solution →Blue litmus paper dipped in lemon juice turns:Read the answer and worked solution →True or false about electricityRead the answer and worked solution →

Worked practice questions

The gas evolved when an acid reacts with a carbonate turns lime water:

  1. colourless
  2. red
  3. pink
  4. milky
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Correct answer: D. milky

Acid + carbonate → salt + water + CO₂. CO₂ passed through lime water (Ca(OH)₂) forms CaCO₃, which appears as a milky suspension.

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Baking soda (NaHCO₃) is used in antacid tablets mainly because it:

  1. thickens stomach lining
  2. neutralises stomach acid
  3. kills stomach bacteria
  4. absorbs water in gut
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Correct answer: B. neutralises stomach acid

NaHCO₃ is a mild base. In the acidic stomach it neutralises excess HCl, easing the discomfort of acidity.

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Which one of the following can be used as an acid-base indicator by a visually impaired student?

  1. Litmus
  2. Turmeric
  3. Petunia leaves
  4. Vanilla essence
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Correct answer: D. Vanilla essence

This Acids, Bases and Salts item tests a core Chemistry concept. Correct answer: Vanilla essence. _Source: syllabus Exemplar Science Class 10_

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