Practice test

Acids, bases and salts - Test Set 1

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

    pH scale range:
    1. 0-7
    2. 8-14
    3. 0-14
    4. None
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  2. Question 2

    Which has pH value?
    1. Pure water
    2. H₂SO₄
    3. Na₂CO₃
    4. HCl
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  3. Question 3

    Citric acid is free in:
    1. Tamarind
    2. Milk
    3. Apple
    4. Lemon
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  4. Question 4

    Nature of antacid:
    1. Acidic
    2. Basic
    3. Neutral
    4. Highly acidic
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  5. Question 5

    Not a Lewis acid:
    1. AlCl₃
    2. BF₃
    3. NH₃
    4. FeCl₃
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  6. Question 6

    Neela Thotha is:
    1. CuSO₄
    2. CaSO₄
    3. FeSO₄
    4. Na₂SO₄
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  7. Question 7

    Quartz crystals in clocks are:
    1. Sodium silicate
    2. SiO₂
    3. Germanium oxide
    4. TiO₂
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  8. Question 8

    Aqueous CuSO₄ is acidic due to:
    1. Dialysis
    2. Electrolysis
    3. Hydrolysis
    4. Photolysis
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  9. Question 9

    RRB NTPC 2017
    The estimated pH value of the human blood is
    1. 7.4
    2. 7.9
    3. 6.7
    4. 8.1
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  10. Question 10

    NDA/NA 2013
    The pH of fresh milk is 6. When it turns sour, the pH
    1. becomes < 6
    2. remains the same. i.e.6
    3. becomes > 6
    4. becomes neutral. i.e. 7
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  11. Question 11

    CDS 2012
    The pH of fresh ground water slightly decreases upon exposure to air because
    1. carbon dioxide from air is dissolved in the water
    2. oxygen from air is dissolved in the water
    3. the dissolved carbon dioxide of the ground water escapes into air
    4. the dissolved oxygen of the ground water escapes into air
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  12. Question 12

    BPSC (Pre) 2018
    Which of the following has pH value 7?
    1. Neutral solution
    2. Basic solution
    3. Acidic solution
    4. None of these
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  13. Question 13

    A solution turns red litmus blue. The pH of solution is
    1. 7
    2. 1
    3. 5
    4. None of these
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  14. Question 14

    Chhattisgarh PCS (Pre) 2018
    Which of the following may be a possible pH value of an acidic solution?
    1. 6
    2. 7
    3. 8
    4. 9
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  15. Question 15

    UPRO/ARO (Pre) 2014
    Which one of the following salts should not be used as table salt?
    1. Iodised salt
    2. Sea salt
    3. Rock salt
    4. Processed common salt
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  16. Question 16

    BPSC (Pre) 2015
    Iodised salt contains
    1. free iodine
    2. calcium iodide
    3. magnesium iodide
    4. potassium iodide
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  17. Question 17

    RRB 2017
    Table salt (NaCl) is a product of
    1. a weak acid and a weak base
    2. a strong acid and a strong base
    3. a weak acid and a strong base
    4. a strong acid and a weak base
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  18. Question 18

    RRB NTPC 2016
    The pH value of acid rain is nearly
    1. 5.5 or less
    2. 12.5 or more
    3. 10.5 or more
    4. 8.5 or more
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  19. Question 19

    CDS 2017
    The estimated pH value of distilled water is
    1. zero
    2. 14
    3. nearly zero
    4. nearly seven
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  20. Question 20

    BPSC (Pre) 2016
    Which acid is commonly found in ant stings?
    1. Formic acid
    2. Acetic acid
    3. Citric acid
    4. Lactic acid
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