A solution reacts with crushed egg shells to give a gas that turns lime water milky the solution contains

Punjab State Board PSEB Solutions for Class 10 Science Chapter 2 Acids, Bases and Salts PSEB 10th Class Science Guide Acids, Bases and Salts Textbook Questions and Answers Question 1. A solution turns red litmus blue, its pH is likely to be : (a) 1 (b) 4 (c) 5 (d) 10. Answer: (d) 10. Question 2. A solution reacts with crushed egg-shells to give a gas that turns lime- water milky. The solution contains: (a) NaCl (b) HCl (c) LiCl (d) KC1. Answer: (b) HCl Question 3. 10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount of HCl solution (the same solution as before) required to neutralise it will be : (a) 4 mL (b) 8 mL (c) 12 mL (d) 16 mL. Answer: (d) 16 mL. Question 4. Which one of the following types of medicines is used for treating indigestion? (a) Antibiotic (b) Analgesic (c) Antacid (d) Antiseptic. Answer: (c) Antacid Question 5. Write word equations and then balance equations for the reaction taking place when : (a) dilute sulphuric acid reacts with zinc granules Answer: Zinc granules + Dilute sulphuric acid → Zinc sulphate + Hydrogen (b) dilute hydrochloric acid reacts with magnesium ribbon Answer: Magnesium ribbon + Hydrochloric acid → Magnesium chloride + Hydrogen (c) dilute sulphuric acid reacts with aluminium powder Answer: Aluminium powder + Dilute sulphuric acid → Aluminium sulphate + Hydrogen (d) dilute sulphuric acid reacts with iron filings. Answer: Iron f...