Practice test

Acids, bases and salts - Test Set 2

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    UPPCS (Mains) 2018
    The pH of a neutral solution at 25°C is:
    1. 0
    2. 7
    3. 10
    4. 14
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  2. Question 2

    SSC CGL 2021
    Which is used as a preservative in pickles due to its acidic nature?
    1. Sodium benzoate
    2. Acetic acid
    3. Sodium chloride
    4. Citric acid
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  3. Question 3

    RRB NTPC 2019
    The chemical name of "Epsom salt" is:
    1. Magnesium sulfate
    2. Calcium carbonate
    3. Sodium sulfate
    4. Potassium nitrate
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  4. Question 4

    NDA 2021
    Which gas is released when baking soda reacts with vinegar?
    1. Oxygen
    2. Carbon dioxide
    3. Hydrogen
    4. Nitrogen
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  5. Question 5

    UPSC 2020
    Which is NOT a property of bases?
    1. Slippery touch
    2. Bitter taste
    3. Turns red litmus blue
    4. Releases H⁺ ions in water
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  6. Question 6

    SSC CHSL 2018
    The acid used in eye wash for minor irritations is:
    1. Boric acid
    2. Hydrochloric acid
    3. Sulfuric acid
    4. Nitric acid
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  7. Question 7

    IBPS PO 2017
    Which salt is used in fire extinguishers for electrical fires?
    1. Sodium chloride
    2. Potassium bicarbonate
    3. Calcium carbonate
    4. Ammonium nitrate
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  8. Question 8

    UPPSC 2019
    The toxic acid in spinach/rhubarb leaves is:
    1. Oxalic acid
    2. Tartaric acid
    3. Malic acid
    4. Ascorbic acid
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  9. Question 9

    CDS 2020
    Which is a weak acid?
    1. Hydrochloric acid
    2. Sulfuric acid
    3. Acetic acid
    4. Nitric acid
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  10. Question 10

    UPPCS (Pre) 2019
    Primary acid causing sour taste in citrus fruits?
    1. Tartaric acid
    2. Citric acid
    3. Malic acid
    4. Oxalic acid
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  11. Question 11

    SSC CGL 2022
    Formula of Plaster of Paris?
    1. CaSO₄·2H₂O
    2. CaSO₄·½H₂O
    3. CaCO₃
    4. Ca(OH)₂
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  12. Question 12

    RRB Group D 2018
    Antacid used in medicines?
    1. Sodium hydroxide
    2. Magnesium hydroxide
    3. Potassium hydroxide
    4. Calcium oxide
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  13. Question 13

    NDA 2022
    Acid in car batteries?
    1. Nitric acid
    2. Hydrochloric acid
    3. Sulfuric acid
    4. Phosphoric acid
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  14. Question 14

    UP Police SI 2020
    Turns blue litmus red?
    1. Lime water
    2. Vinegar
    3. Baking soda solution
    4. Milk of magnesia
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  15. Question 15

    SSC CHSL 2021
    Acid in tomatoes?
    1. Lactic acid
    2. Oxalic acid
    3. Malic acid
    4. Citric acid
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  16. Question 16

    IBPS Clerk 2019
    Washing soda is:
    1. Sodium carbonate
    2. Sodium bicarbonate
    3. Calcium carbonate
    4. Sodium hydroxide
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  17. Question 17

    CDS 2021
    Gas produced when metal carbonates react with acids?
    1. Hydrogen
    2. Oxygen
    3. Carbon dioxide
    4. Nitrogen
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  18. Question 18

    UPPSC RO/ARO 2018
    Acid used in fertilizer manufacturing?
    1. Hydrochloric acid
    2. Nitric acid
    3. Acetic acid
    4. Sulfuric acid
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  19. Question 19

    SSC GD 2020
    Strong base among these?
    1. NH₄OH
    2. NaOH
    3. Ca(OH)₂
    4. Mg(OH)₂
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  20. Question 20

    RRB NTPC 2021
    Acid found in apples?
    1. Malic acid
    2. Citric acid
    3. Tartaric acid
    4. Lactic acid
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