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کیمیائی صنعتیں

دسویں جماعت · کیمیا · 5 سوالات

نام: ____________________   تاریخ: ____________

  1. Urea is mainly used as a:

    • A Fertiliser
    • B Dye
    • C Explosive
    • D Fuel

  2. The Solvay process is used to manufacture:

    • A Sodium carbonate
    • B Ammonia
    • C Urea
    • D Sulphuric acid

  3. Sulphuric acid is made industrially by the:

    • A Cracking
    • B Solvay process
    • C Contact process
    • D Haber process

  4. Crude petroleum is separated into fractions by:

    • A Crystallisation
    • B Filtration
    • C Fractional distillation
    • D Electrolysis

  5. Cement is made by heating limestone with:

    • A Salt
    • B Sugar
    • C Clay
    • D Coal tar

جوابی کلید

1. A, 2. A, 3. C, 4. C, 5. C

  1. Urea gives plants nitrogen.

  2. Sodium carbonate (soda ash) is made by the Solvay process.

  3. The contact process uses a vanadium oxide catalyst.

  4. The fractions have different boiling points.

  5. Limestone and clay are heated in a kiln and ground to make cement.