important questions of chapter acids , bases and salts class 10
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1.Name the acid present in the following:
(i) Tomato (ii) Vinegar (iii) Tamarind
Answer. (i) Oxalic acid (ii) Acetic acid (iii) Tartaric acid
2.15 mL of water and 10 mL of sulphuric acid are to be mixed in a beaker
(i) State the method that should be followed with reason.
(ii)What is this process called?
Answer.
(i) The acid is to be added slowly in water to prevent the mixture to be splashed. The
reaction is highly exothermic, therefore, constant cooling should be done.
(ii)The process is called dilution.
3. Explain how antacid works.
Answer. Hyperacidity is caused by excess of hydrochloric acid in stomach. Antacid is basic in nature. It neutralizes excess of acid and gives relief from pain caused by hyperacidity.
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