Class vii science chapter 5
Acids, Bases and Salts CBSE Class 7 Important Question and Answers Acids, Bases and Salts Q 1. Name the following: (i) Substances which gives hydronium ion ( H+) in solution. Ans: Acids (ii) Substances which turn blue litmus solution red. Ans: Acids (iii) Substances which gives hydroxyl ion (OH-) in solution. Ans: Bases (iv) Substances which turn turmeric paper red. Ans: Bases (v) Chemical name for salt which we consume everyday. Ans: Sodium Chloride (vi) Base used as foaming agent in fire extinguisher. Ans: Sodium Hydrogen Carbonate (vii) A commonly used antacid. Ans: Baking Soda (viii) The substances on which litmus solution has no effect. Ans: Neutrals (ix) The colour of turmeric solution in soap solution. Ans: Red (x) Examples of any two mineral acids and organic acids. Ans: Mineral Acids: a)Hydrochloric Acid b).Nitric Acid Organic Acids: a)Acetic Acid b)Citric Acid (xi) Write the name and colour of