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بڑے سالمات

بارہویں جماعت · کیمیا · 5 سوالات

نام: ____________________   تاریخ: ____________

  1. Polythene is made from:

    • A Methane
    • B Ethene
    • C Propane
    • D Ethanol

  2. Nylon is formed by:

    • A Cracking
    • B Condensation polymerisation
    • C Addition polymerisation
    • D Distillation

  3. Natural rubber is a polymer of:

    • A Ethene
    • B Glucose
    • C Styrene
    • D Isoprene

  4. Proteins are polymers of:

    • A Fatty acids
    • B Amino acids
    • C Nucleotides
    • D Sugars

  5. PVC is made from the monomer:

    • A Ethene
    • B Chloroethene
    • C Styrene
    • D Propene

جوابی کلید

1. B, 2. B, 3. D, 4. B, 5. B

  1. Many ethene molecules join by addition polymerisation.

  2. Water is lost as the monomers join.

  3. Natural rubber is polyisoprene.

  4. Peptide bonds join amino acids.

  5. Vinyl chloride, or chloroethene, forms PVC.