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General Knowledge :: Chemistry

  1. The hardest form of carbon is

  2. A.

     coke

    B.

     graphite

    C.

     diamond

    D.

     charcoal

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  3. The most important ore of aluminium is

  4. A.

     bauxite

    B.

     magnetite

    C.

     haematite

    D.

     monazite

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  5. The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of

  6. A.

     an addition reaction

    B.

     a condensation reaction

    C.

     an oxidation reaction

    D.

     an elimination reaction

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  7. The number of electrons presents in H+ is

  8. A.

     zero

    B.

     one

    C.

     two

    D.

     three

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  9. The hottest part of the gas flame is known as

  10. A.

     luminous zone

    B.

     dark zone

    C.

     blue zone

    D.

     non-luminous zone

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  11. The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is

  12. A.

     carbon

    B.

     hydrogen

    C.

     oxygen

    D.

     nitrogen

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  13. The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is

  14. A.

     chain isomerism

    B.

     functional group isomerism

    C.

     positional isomerism

    D.

     metamerism

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  15. The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?

  16. A.

     1/6

    B.

     1/3

    C.

     1/8

    D.

     1/4

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  17. The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3

  18. A.

     4

    B.

     5

    C.

     2

    D.

     zero

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  19. The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in

  20. A.

     1.8 gram of H2O

    B.

     12 moles of KMnO4

    C.

     0.6N H2SO4

    D.

     4.6 gram of C2H5OH

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