Test-MCQ Class 10-NCERT -Science-Chapter 2-Test-2 Chapter 2: Acids Base and salt Multiple Choice Questions No of Questions : 16 Marks: 20 Please enter your email: 1. Common salt besides being used in kitchen can also be used as the raw material for making (i) washing soda (ii) bleaching powder (iii) baking soda (iv) slaked lime (i), (iii) and (iv) (i) and (ii) (i), (ii) and (iv) (i) and (iii) 2. One of the constituents of baking powder is sodium hydrogencarbonate, the other constituent is tartaric acid hydrochloric acid sulphuric acid acetic acid 3. To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is corrosive neutral acidic basic 4. Which of the following statements is correct about an aqueous solution of an acid and of a base? (i) Higher the pH, stronger the acid (ii) Higher the pH, weaker the acid (iii) Lower the pH, stronger the base (iv) Lower the pH, weaker the base (i) and (iv) (ii) and (iv) (ii) and (iii) (i) and (iii) 5. The pH of the gastric juices released during digestion is. more than 7 equal to 0 less than 7 equal to 7 6. Which of the following phenomena occur, when a small amount of acid is added to water? (i) Ionisation (ii) Neutralisation (iii) Dilution (iv) Salt formation (i) and (iii) (i) and (ii) (ii) and (iv) (ii) and (iii) 7. Which one of the following can be used as an acid–base indicator by a visually impared student? Litmus Petunia leaves Turmeric Vanilla essence 8. Which of the following substance will not give carbon dioxide on treatment with dilute acid? Lime Baking soda Limestone Marble 9. Which of the following is acidic in nature? Lime juice Antacid Human blood Lime water 10. In an attempt to demonstrate electrical conductivity through an electrolyte, the following apparatus (Figure 2.1) was set up. Which among the following statement(s) is(are) correct? (i) Bulb will not glow because electrolyte is not acidic (ii) Bulb will glow because NaOH is a strong base and furnishes ions for conduction. (iii) Bulb will not glow because circuit is incomplete (iv) Bulb will not glow because it depends upon the type of electrolytic solution (iv) only (ii) and (iv) (i) and (iii) (ii) only 11. Which of the following is used for dissolution of gold? Sulphuric acid Aqua regia Hydrochloric acid Nitric acid 12. Which of the following is not a mineral acid? Sulphuric acid Citric acid Hydrochloric acid Nitric acid 13. Which among the following is not a base? NH4OH NaOH KOH C2H5 OH 14. Which of the following statements is not correct? All metal oxides react with water to give salt and acid All metal carbonates react with acid to give a salt, water and carbon dioxide Some non metal oxides react with water to form an acid Some metals react with acids to give salt and hydrogen 15. Match the chemical substances given in Column (A) with their appropriate application given in Column (B) Column (A) Column (B) (A) Bleaching powder (i) Preparation of glass (B) Baking soda (ii) Production of H2 and Cl2 (C) Washing soda (iii) Decolourisation (D) Sodium chloride (iv) Antacid A—(iii), B—(ii), C—(iv), D—(i) A—(ii), B—(i), C—(iv), D—(iii) A—(ii), B—(iv), C—(i), D—(iii) A—(iii), B—(iv), C—(i), D—(ii) 16. Equal volumes of hydrochloric acid and sodium hydroxide solutions of same concentration are mixed and the pH of the resulting solution is checked with a pH paper. What would be the colour obtained? (You may use colour guide given in Figure 2.2 ) Yellow Red Blue Yellowish green Loading … Question 1 of 16
