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  1. The gas produced in marshy places due to decomposition of vegetation is

  2. A.

     Carbon monoxide

    B.

     Carbon dioxide

    C.

     Sulphur dioxide

    D.

     Methane

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  3. Organic compounds are

  4. A.

     Covalent compounds

    B.

     Ionic compounds

    C.

     Co-ordination compounds

    D.

     Interstitial compounds

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  5. Vinegar is an aqueous solution of

  6. A.

     Oxalic acid

    B.

     Citric acid

    C.

     Hydrochloric acid

    D.

     Acetic acid

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  7. Two elements which can form a large number of compounds are

  8. A.

     Carbon and Hydrogen

    B.

     Carbon and Nitrogen

    C.

     Carbon and Oxygen

    D.

     Carbon and Sulphur

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  9. Alcoholic (– OH) group can be identified by :

  10. A.

     Tollen's Reagent Test

    B.

     Esterification Test

    C.

     FeCl3Test

    D.

     Ozonolysis Reaction

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  11. Which one is the simplest form of alkane?

  12. A.

     Propane

    B.

     Butane

    C.

     Methane

    D.

     Decane

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  13. Which of the following is not a natural source of hydrocarbon?

  14. A.

     Natural Gas

    B.

     Coal

    C.

     Petroleum

    D.

     Mica

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  15. The element with highest first ionisation energy is

  16. A.

     Hydrogen

    B.

     Helium

    C.

     Lithium

    D.

     Sodium

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  17. In a period from Li to F, ionisation potential

  18. A.

     Cannot be predicted

    B.

     Increases

    C.

     Decreases

    D.

     Remains same

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  19. In the periodic table of elements, on moving from left to right across a period, the atomic radius

  20. A.

     Decreases

    B.

     Increases

    C.

     Remains unchanged

    D.

     Does not follow a definite pattern

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