Hydrogen creative one mark questions

11th Standard

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Chemistry

Answer all the questions
Time : 00:40:00 Hrs
Total Marks : 50

    Part - A

    5 x 1 = 5
  1. Match the List-I and List-II using the correct code given below the list.

    List-I List-II
    A. Hydrogenation of unsaturated vegetable oils 1. Rocket fuel
    B. Calcium hydride 2. Welding of metals
    C. Liquid hydrogen 3. Desiccant
    D. Atomic hydrogen 4. Margarine
    (a)
    A B C D
    4 3 1 2
    (b)
    A B C D
    3 4 2 1
    (c)
    A B C D
    1 3 4 2
    (d)
    A B C D
    2 1 4 3
  2. Which of the following causes temporary hardness of water?

    (a)

    MgCl2

    (b)

    Na2SO4

    (c)

    Mg(HCO3)2

    (d)

    NaCl

  3. Which of the following can oxidise Hydrogen peroxide?

    (a)

    acidified KMnO4

    (b)

    Cu

    (c)

    dil. HNO3

    (d)

    CrO2Cl2

  4. Which of the following process is important in food industry?

    (a)

    Dehydration

    (b)

    Dehalogenation

    (c)

    Hydrogenation

    (d)

    Carboxylation

  5. Which of the following is used as desiccants to remove moisture from organic solvents?

    (a)

    Calcium hydride

    (b)

    LiAIH4

    (c)

    Sodium boro hydride

    (d)

    Sodium hydride

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