alleryBases produce which ion when dissolved in water?
- hydrogen ion (H⁺)
- carbonate ion
- sulphate ion
- hydroxide ion (OH⁻)
Show answer and solution
Correct answer: D. hydroxide ion (OH⁻)
Bases release hydroxide ions (OH⁻) in aqueous solution.
Andhra Pradesh SSC (Class 10) Calorimetry — practice questions — page 2
Explore 35 free Calorimetry questions in Andhra Pradesh SSC (Class 10) Physics. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 31–35 of 35.
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 →
Worked practice questions
Neutralisation of an acid by a base produces:
- water and CO₂
- salt and water
- salt and oxygen
- gas and heat
Show answer and solution
Correct answer: B. salt and water
**The defining equation:** acid + base → salt + water.
The reaction is exothermic (releases heat).
Which of the following is a synthetic indicator used to test acids and bases?
- red cabbage juice
- phenolphthalein
- litmus
- turmeric
Show answer and solution
Correct answer: B. phenolphthalein
Phenolphthalein and methyl orange are synthetic indicators
litmus and turmeric are natural.
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