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UP Board Class 10 Calorimetry — practice questions — page 2

Explore 34 free Calorimetry questions in UP Board 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 31–34 of 34.

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 →

Worked practice questions

Neutralisation of an acid by a base produces:

  1. water and CO₂
  2. salt and water
  3. salt and oxygen
  4. gas and heat
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Correct answer: B. salt and water

**The defining equation:** acid + base → salt + water. The reaction is exothermic (releases heat).

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Which of the following is a synthetic indicator used to test acids and bases?

  1. red cabbage juice
  2. phenolphthalein
  3. litmus
  4. turmeric
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Correct answer: B. phenolphthalein

Phenolphthalein and methyl orange are synthetic indicators litmus and turmeric are natural.

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On the pH scale, a neutral solution (such as pure water) has a pH of:

  1. 14
  2. 1
  3. 7
  4. 0
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Correct answer: C. 7

Pure water/neutral solutions have pH 7.

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