Carbon and Its Compounds English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021

10th Standard

    Reg.No. :
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Science

Time : 00:10:00 Hrs
Total Marks : 10

    Part A

    10 x 1 = 10
  1. The IUPAC name of an organic compound is 3-Methyl butan-1-ol. What type compound it is?

    (a)

    Aldehyde

    (b)

    Carboxylic acid

    (c)

    Ketone

    (d)

    Alcohol

  2. Which of the following pairs can be the successive members of a homologous series?

    (a)

    C3H8 and C4H10

    (b)

    C2H2 and C2H4

    (c)

    CH4 and C3H6

    (d)

    C2H5OH and C4H8OH

  3. Rectified spirit is an aqueous solution which contains about _______ of ethanol

    (a)

    95.5 %

    (b)

    75.5 %

    (c)

    55.5 %

    (d)

    45.5 %

  4. TFM in soaps represents ___________ content in soap

    (a)

    mineral

    (b)

    vitamin

    (c)

    fatty acid

    (d)

    carbohydrate

  5. Cyclobutane is an example of ______________ compounds.

    (a)

    a cyclic

    (b)

    cyclic

    (c)

    aromatic

    (d)

    alicyelic

  6. Ethene is an ___________

    (a)

    alkane

    (b)

    alkene

    (c)

    alkyze

    (d)

    armatic hydrocarbon

  7. Identify the ketone among the following

    (a)

    CH3COCH3

    (b)

    CH3CHO

    (c)

    CH3COOH

    (d)

    CH3COOCH3

  8. According to IUPAC rules, the secondary suffix used to represent carboxylic acids is  _________________.

    (a)

    al

    (b)

    ol

    (c)

    ate

    (d)

    oic

  9. Rectified spirit contains

    (a)

    95.5% of ethanol and 4.5% of water

    (b)

    100 % pure alcohol

    (c)

    4.5% of ethanol and 95.5% of water

    (d)

    50% of ethanal and 50% of water

  10. When ethanol reacts with acidified K2Cr2O7 the orange color of K2Cr2O7 changes to _____________

    (a)

    yellow

    (b)

    red

    (c)

    purple

    (d)

    green

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