Acids, Bases And Salts - SEC 4 Nt

15 Questions | Total Attempts: 57

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Acids, Bases And Salts - SEC 4 Nt

Simple questions on acids, bases ans salts for Sec 4 NT level.


Questions and Answers
  • 1. 
    What does this hazard symbol mean?
    • A. 

      Corrosive

    • B. 

      Irritant

    • C. 

      Harmful

  • 2. 
    Which of these acids is most likely to be dangerous? 
    • A. 

      Citric acid

    • B. 

      Carbonic acid

    • C. 

      Hydrochloric acid

  • 3. 
    What happens to litmus paper in acidic solutions?
    • A. 

      Red litmus turns blue

    • B. 

      Blue litmus turns red

    • C. 

      Yellow litmus turns green

  • 4. 
    Universal indicator solution is usually green to begin with. What does this mean?
    • A. 

      It is acidic

    • B. 

      It is alkaline

    • C. 

      It is neutral

  • 5. 
     A liquid has a pH of 7.5 - what does this mean?
    • A. 

      It is weakly acidic

    • B. 

      It is weakly alkaline

    • C. 

      It is neutral

  • 6. 
    A liquid has a pH of 1 - what does this mean?
    • A. 

      It must be sodium hydroxide solution

    • B. 

      It is strongly acidic

    • C. 

      It is weakly acidic

  • 7. 
    What products are formed when a carbonate reacts with an acid?
    • A. 

      A salt only

    • B. 

      A salt and water

    • C. 

      A salt, water and carbon dioxide

    • D. 

      A salt and hydrogen

  • 8. 
    What products are formed when a metal reacts with an acid?
    • A. 

      A salt and hydrogen

    • B. 

      A salt, water and carbon dioxide

    • C. 

      A salt and water

    • D. 

      A salt only

  • 9. 
    Farmers use lime to neutralise their soils. What sort of substance is lime?
    • A. 

      A base

    • B. 

      An acid

    • C. 

      A sharp tasting drink

  • 10. 
    Which gas is produced when magnesium reacts with hydrochloric acid?
    • A. 

      Carbon dioxide

    • B. 

      Oxygen

    • C. 

      Hydrogen

    • D. 

      Ammonia

  • 11. 
    Which gas is produced when calcium carbonate reacts with hydrochloric acid?
    • A. 

      Oxygen

    • B. 

      Hydrogen

    • C. 

      Ammonia

    • D. 

      Carbon dioxide

  • 12. 
    Which gas is produced when ammonium nitrate reacts with sodium hydroxide?
    • A. 

      Nitrogen

    • B. 

      Hydrogen

    • C. 

      Ammonia

    • D. 

      Oxygen

  • 13. 
    Neutralisation is the process in which
    • A. 

      Acid react with salt

    • B. 

      Alkali react with water

    • C. 

      Acid react with alkali

    • D. 

      Alkali react with base

  • 14. 
    When unknown substance X react with acid, it release a gas which produces a "pop" sound with a burning splint. What type of substance does X belongs to?
    • A. 

      Alkali

    • B. 

      Carbonate

    • C. 

      Ammonium salts

    • D. 

      Metal

  • 15. 
    When unknown substance Y react with acid, it release a gas which turns limewater chalky. What is the gas produced?
    • A. 

      Oxygen

    • B. 

      Hydrogen

    • C. 

      Ammonia

    • D. 

      Carbon dioxide

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