Chemical Reactions And Equations... I

10 Questions | Total Attempts: 39

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Chemical Reactions And Equations... I

For understanding the concept. . . .


Questions and Answers
  • 1. 
    When aqueous solutions of Barium chloride and Sodium sulphate react together, ________ is formed.... 
    • A. 

      A white precipitate 

    • B. 

      Yellow gas

    • C. 

      A black precipitate

    • D. 

      Greenish blue gas

  • 2. 
    When Magnesium burns in air ________ is formed. 
    • A. 

      Dazzling white flame

    • B. 

      Dazzling yellow flame 

    • C. 

      Emarald green flame 

    • D. 

      Bluish green flame

  • 3. 
    When metal reacts with Acid _______ is evolved 
    • A. 

      Hydrogen gas

    • B. 

      Nitrogen gas

    • C. 

      Black precipitate 

    • D. 

      Yellow precipitate 

  • 4. 
    Calcium Oxide is also called _______ and Calcium hydroxide is also known as _______. 
    • A. 

      Quick lime, Slaked lime

    • B. 

      Slaked lime, Quick lime

    • C. 

      Soda lime, Ginger lime

    • D. 

      Lime water, Soda ash

  • 5. 
    Fe + CuSO4 - > ______. 
    • A. 

      FeSO4 + Cu

    • B. 

      No reaction 

    • C. 

      CuO + FeS

    • D. 

      CuSo4 + FeSO4 

  • 6. 
    According to law of conservation of mass, Total mass of reactant is equal to _________
    • A. 

      Total mass of the product

    • B. 

      Square of the total mass of product

    • C. 

      Sum of the total mass of the product and carbon's atomic mass

    • D. 

      Square root of atomic mass of the products

  • 7. 
    The chemical formula of Ammonium hydroxide is ______. 
    • A. 

      NH4 OH

    • B. 

      NH3OH

    • C. 

      NaOH

    • D. 

      NaHCO3

  • 8. 
    The valency of Carbon is ____..
    • A. 

      4

    • B. 

      6

    • C. 

      8

    • D. 

      2

  • 9. 
    Is magnesium Oxide basic, acidic or neutral?
    • A. 

      Basic

    • B. 

      Acidic

    • C. 

      Neutral 

    • D. 

      Shows both acidic and basic character

  • 10. 
    A short-hand method of representing a chemical reaction is called a _____. 
    • A. 

      Chemical equation 

    • B. 

      Balanced equation 

    • C. 

      Skeletal equation

    • D. 

      Linear equation 

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