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General Science - section - 2
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General Science - Synthetic Materials
  1. Which of the following is a protein?

    2. A.

     Natural rubber
    B.

     Starch
    C.

     Cellulose
    D.

     None of these

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  2. Wood is the main raw material for the manufacture of

    3. A.

     Paint
    B.

     Paper
    C.

     Ink
    D.

     Gun powder

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  3. Rayon is chemically.

    4. A.

     Cellulose
    B.

     Pectin
    C.

     Glucose
    D.

     Amylase

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  4. Optic fibers are mainly used for which of the following?

    5. A.

     Musical instruments
    B.

     Food industry
    C.

     Weaving
    D.

     Communication

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  5. The major ingredient of leather is:

    6. A.

     Collagen
    B.

     Carbohydrate
    C.

     Polymer
    D.

     Nucleic acid

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  6. What are the soaps?

    7. A.

     Salts of silicates
    B.

     Mixture of glycerol and alcohols
    C.

     Sodium or potassium salts of heavier fatty acids
    D.

     Esters of heavy fatty acids

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  7. How does common salt help in separating soap from the solution after saponification?

    8. A.

     By decreasing density of Soap
    B.

     By decreasing solubility of Soap
    C.

     By increasing density of Soap
    D.

     By increasing solubility of Soap

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  8. In vulcanisation, natural rubber is heated with

    9. A.

     Carbon
    B.

     Silicon
    C.

     Sulphur
    D.

     Phosphorous

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  9. Deep blue colour is imparted to glass by the presence of

    10. A.

     Cupric oxide
    B.

     Nickel oxide
    C.

     Cobalt oxide
    D.

     Iron oxide

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  10. Glass is made of the mixture of:

    11. A.

     Quartz and mica
    B.

     Sand and silicates
    C.

     Salt and quartz
    D.

     Sand and salt

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