Practice test

Acids, bases and salts - Test Set 3

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

    Which one of the following is the chemical formula of Hypobromous acid?
    1. HBrO₄
    2. HOBr
    3. HBr
    4. HBrO₃
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  2. Question 2

    Which one of the following is predominantly found in tomatoes?
    1. Acetic acid
    2. Tartaric acid
    3. Oxalic acid
    4. Lactic acid
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  3. Question 3

    Reaction of quick lime (CaO) with water to produce slaked lime (Ca(OH)₂) is an example of:
    1. Displacement reaction
    2. Endothermic reaction
    3. Decomposition reaction
    4. Exothermic reaction
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  4. Question 4

    The equivalent weight of oxalic acid in C₆H₂O₇, 2H₂O is:
    1. 45
    2. 63
    3. 90
    4. 126
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  5. Question 5

    Which property is true for toothpaste?
    1. It is acidic
    2. It is neutral
    3. It is basic
    4. Made of calcium phosphate (tooth enamel material)
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  6. Question 6

    Which is a tribasic acid?
    1. Hydrochloric acid
    2. Nitric acid
    3. Sulphuric acid
    4. Phosphoric acid
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  7. Question 7

    Which oxide of nitrogen is the 'anhydride' of nitric acid?
    1. N₂O
    2. N₂O₃
    3. NO₂
    4. N₂O₅
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  8. Question 8

    Which gas gives an acidic solution in water?
    1. Hydrogen
    2. Carbon dioxide
    3. Nitrogen
    4. Oxygen
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  9. Question 9

    Boric acid is an acid because its molecule:
    1. Accepts OH⁻ from water releasing proton
    2. Combines with proton from water
    3. Contains replaceable H⁺ ion
    4. Gives up a proton
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  10. Question 10

    White phosphorus glows in the dark due to:
    1. Amorphous character
    2. Slow oxidation
    3. High ignition temperature
    4. Good electrical conductivity
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  11. Question 11

    Soap stops beesting burning sensation because:
    1. Bee venom (acidic) is neutralized by alkaline soap
    2. Bee venom (alkaline) is neutralized by acidic soap
    3. Soap cleans the area
    4. Soap acts as anesthetic
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  12. Question 12

    The acid in vinegar is:
    1. Acetic acid
    2. Ascorbic acid
    3. Citric acid
    4. Tartaric acid
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  13. Question 13

    Statement I: Little H₂ is produced when H₂SO₄ reacts with Ca.
    Statement II: CaSO₄ (product) is insoluble
    Code:
    1. Both true, II explains I
    2. Both true, II doesn't explain I
    3. I true, II false
    4. I false, II true
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  14. Question 14

    Correct order of acid strength:
    1. H₂SO₄ > H₃PO₃ > CH₃COOH
    2. H₃PO₃ > H₂SO₄ > CH₃COOH
    3. CH₃COOH > H₃PO₃ > H₂SO₄
    4. CH₃COOH > H₂SO₄ > H₃PO₃
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  15. Question 15

    NaCl is NOT used to prepare:
    1. Bleaching powder
    2. Baking soda
    3. Plaster of Paris
    4. Washing soda
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  16. Question 16

    First mineral acid discovered:
    1. Sulphuric acid
    2. Hydrochloric acid
    3. Nitric acid
    4. Phosphoric acid
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  17. Question 17

    Soda water pH value:
    1. >7
    2. <7
    3. 7
    4. >14
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  18. Question 18

    Correct statement(s):
    I. Acids are sour and generate H⁺
    II. Acids are sour and generate OH⁻
    III. Bases are bitter and generate OH⁻
    1. Only I & III
    2. Only I & II
    3. Only II & III
    4. All
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  19. Question 19

    Gas causing acid rain in industrial areas:
    1. CO₂
    2. CO
    3. SO₂
    4. CH₄
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  20. Question 20

    Chemical in bones/teeth:
    1. Ca₃(PO₄)₂
    2. CaCl₂
    3. CaSO₄
    4. Ca borate
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