Acids, Bases and Salt


  1. The acid in gastricjuice is









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    hydrochloric acid

    Correct Option: C

    hydrochloric acid


  1. Which one of the following acids is used for etching glass ?









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    Hydrofluric acid (HF) is used in the ething of glass.

    Correct Option: C

    Hydrofluric acid (HF) is used in the ething of glass.



  1. Which one of the following is used as a fertilizer ?









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    (NH4)2SO4 is known as Sindri fertilizer. It is colourless and highly soluble in water. NH4NO3 is also used as a fertilizer by mixing with other substances like nitro chalk NH4NO3 + Ca4CO3, Luena saltpetre NH4NO3 + (NH4)2SO4

    Correct Option: D

    (NH4)2SO4 is known as Sindri fertilizer. It is colourless and highly soluble in water. NH4NO3 is also used as a fertilizer by mixing with other substances like nitro chalk NH4NO3 + Ca4CO3, Luena saltpetre NH4NO3 + (NH4)2SO4


  1. Mildness of shaving cream is enriched by which one of the following ?









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    Mildness of shaving cream is enriched by potassium carbonate.

    Correct Option: C

    Mildness of shaving cream is enriched by potassium carbonate.



  1. Human stomach produces acid 'X' which helps in digestion of food. Acid 'X' is









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    Hydrochloric acid secreted by oxyntic cell activates proenzyme pepsinogen to pepsin and also provides the acidic pH optimal for pepsins.

    Correct Option: C

    Hydrochloric acid secreted by oxyntic cell activates proenzyme pepsinogen to pepsin and also provides the acidic pH optimal for pepsins.