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Andhra Pradesh SSC (Class 10) Acids, Bases and Salts — practice questions

Explore 52 free Acids, Bases and Salts questions in Andhra Pradesh SSC (Class 10) Science and Technology. Open each question or exercise to read its content, reference answers and available explanation.

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Acids, Bases and Salts questions and exercises with answers

Showing questions 1–30 of 52.

Which equation best represents the essential ionic change in a neutralization reaction?Read the answer and worked solution →Acids turn blue litmus paper:Read the answer and worked solution →Bases turn red litmus paper:Read the answer and worked solution →Litmus, extracted from lichens, is an example of a:Read the answer and worked solution →Acids characteristically taste: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 →The reaction between an acid and a base, producing salt and water, is called: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 →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 →Baking soda, often used to relieve acidity, is chemically:Read the answer and worked solution →A curry stain turns reddish-brown on a soap-washed cloth and yellow again on rinsing because soap is:Read the answer and worked solution →Blue litmus paper dipped in lemon juice turns:Read the answer and worked solution →Phenolphthalein in a sodium hydroxide solution is:Read the answer and worked solution →Onion juice loses its smell in a:Read the answer and worked solution →When dilute hydrochloric acid is poured on zinc granules, which gas is evolved?Read the answer and worked solution →The gas evolved when an acid reacts with a carbonate turns lime water:Read the answer and worked solution →Neutralisation of an acid by a base produces: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 →A solution turns red litmus blue and has pH = 11. The solution is:Read the answer and worked solution →Which ion concentration *increases* when an acid dissolves in water?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 →Plaster of Paris is chemically:Read the answer and worked solution →Baking soda (NaHCO₃) is used in antacid tablets mainly because it:Read the answer and worked solution →Farmers add slaked lime, Ca(OH)₂, to soil that is too:Read the answer and worked solution →pH less than 7 indicates a solution that is:Read the answer and worked solution →Litmus paper turns blue when dipped in a/an:Read the answer and worked solution →Acid + active metal gives:Read the answer and worked solution →

Worked practice questions

Which equation best represents the essential ionic change in a neutralization reaction?

  1. $\mathrm{Na^+ + Cl^- \rightarrow NaCl}$
  2. $\mathrm{H^+ + OH^- \rightarrow H_2O}$
  3. $\mathrm{Ag^+ + Cl^- \rightarrow AgCl}$
  4. $\mathrm{Mg + O \rightarrow MgO}$
Show answer and solution

Correct answer: B. $\mathrm{H^+ + OH^- \rightarrow H_2O}$

Neutralization is fundamentally the reaction between hydrogen ions from an acid and hydroxide ions from a base to form water: $\mathrm{H^+ + OH^- \rightarrow H_2O}$. The other options describe salt formation, precipitation, or oxidation.

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Acids turn blue litmus paper:

  1. colourless
  2. red
  3. blue
  4. green
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Correct answer: B. red

Acids turn blue litmus red.

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Bases turn red litmus paper:

  1. colourless
  2. yellow
  3. red
  4. blue
Show answer and solution

Correct answer: D. blue

Bases turn red litmus blue.

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