Practice test

Organic chemistry - Test Set 5

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

    Alkanes are saturated hydrocarbons, in which a single bond is found between two carbon atoms. The general formula is:
    1. CnH2n+2
    2. CnHn+1
    3. CnH2n–1
    4. CnH2n+1
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  2. Question 2

    One of the IUPAC names that is different given below. Select one of the names.
    1. C4H8OH→ Butanol→butyl alcohol
    2. C3H7OH→ Propanol→ propyl alcohol
    3. CH3OH→ Methanol →methyl alcohol
    4. C2H5OH→ Ethanol → Ethyl alcohol
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  3. Question 3

    Alkene, unsaturated hydrocarbon, which has a double bond between two carbon atoms, has a common formula, which is:
    1. CnH2n+2
    2. CnH2n-1
    3. CnH2n+1
    4. CnH2n
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  4. Question 4

    Which of the following has a triple bond?
    1. Propene
    2. Propanol
    3. Propanoic acid
    4. Propine
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  5. Question 5

    Which of the following represents alkane?
    1. -C = C-
    2. -C = C-
    3. -C – C-
    4. All of these
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  6. Question 6

    What is the name of the compound CH3 - CH3?
    1. propane
    2. butane
    3. methane
    4. ethane
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  7. Question 7

    The proven formula using the compound is CH2O, its vapor density is 90. The molecular formula of the compound is:
    1. C6H12O6
    2. C6H10O4
    3. C6H10O6
    4. C6H12O4
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  8. Question 8

    ____________The compound has -OH as a functional group.
    1. Ethanoic acid
    2. Butanol
    3. Acetic acid
    4. Carbonyl acid
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  9. Question 9

    What is the IUPAC name for acetic acid?
    1. propanoic acid
    2. butanoic acid
    3. ethanoic acid
    4. methanoic acid
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  10. Question 10

    The molecular formulas of methane, ethane and butane are CH4, C2H6 and C4H10, respectively. What would be their empirical formulas respectively?
    1. CH4, CH3 and C2H5
    2. CH4, C6H6 and C2H2
    3. CH4, C2H6 and C4H10
    4. C4H, 2CH3 and 2C2H5
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  11. Question 11

    Which of the following is the functional group in propanone?
    1. Carboxylic acid
    2. Aldehyde
    3. Alcohol
    4. Ketone
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  12. Question 12

    Functional group -CHO is present in which of the following?
    1. Ketone
    2. Alcohol
    3. Aldehyde
    4. Carboxylic acid
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  13. Question 13

    A sucrose molecule contains _____ carbon atoms.
    1. 6
    2. 18
    3. 15
    4. 12
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  14. Question 14

    Symbol of Methane is
    1. CH2
    2. CH1
    3. CH3
    4. CH4
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  15. Question 15

    What is the chemical formula of propane?
    1. C3H8
    2. C5H10
    3. CH2
    4. C2H6
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  16. Question 16

    How many single bonds are present in methane?
    1. six
    2. five
    3. seven
    4. four
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  17. Question 17

    ___________ is an unsaturated hydrocarbon.
    1. Ethane
    2. Butane
    3. Benzene
    4. Methane
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  18. Question 18

    Each carbon atom in ethane is bonded.
    1. Four atoms
    2. One atom
    3. Three atoms
    4. Five atoms
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  19. Question 19

    Unsaturated carbon compounds burn in oxygen with excessive black smoke providing a flame with_______________.
    1. Yellow
    2. Red
    3. Brown
    4. Blue
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  20. Question 20

    What is cyclic hydrocarbon with molecular formula C6H6?
    1. Cyclo pentane
    2. Napthalene
    3. Methane
    4. Benzene
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