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Acids, Bases and Salts — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceAcids, Bases and Salts3 Marks
Question
Acids and bases
✓

Answer

AcidsBases
(i) A substance which liberates H+ ions when dissolved in water is an acid(ii) Blue litmus turns red in an acid.(iii) The pH of an acid is less than 7.(iv) Acids are sour to taste(v) e.g. HCl, H2SO4A substance which liberates OH– ions when dissolved in water is called a base.Red litmus turns blue in a baseThe pH of a base is greater than 7.Bases are bitter to taste,e.g. NaOH, KOH.

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