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 (iii) (i) and (ii) (i), (ii) and (iv) 2. One of the constituents of baking powder is sodium hydrogencarbonate, the other constituent is sulphuric acid tartaric acid acetic acid hydrochloric acid 3. To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is acidic neutral corrosive 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 (ii) and (iii) (i) and (iv) (i) and (iii) (ii) and (iv) 5. The pH of the gastric juices released during digestion is. more than 7 equal to 7 less than 7 equal to 0 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 (ii) and (iv) (i) and (iii) (i) and (ii) (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 Vanilla essence Turmeric 8. Which of the following substance will not give carbon dioxide on treatment with dilute acid? Baking soda Lime Limestone Marble 9. Which of the following is acidic in nature? Human blood Antacid Lime water Lime juice 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 (i) and (iii) (ii) and (iv) (ii) only 11. Which of the following is used for dissolution of gold? Aqua regia Hydrochloric acid Sulphuric acid Nitric acid 12. Which of the following is not a mineral acid? Sulphuric acid Nitric acid Citric acid Hydrochloric acid 13. Which among the following is not a base? KOH NH4OH C2H5 OH NaOH 14. Which of the following statements is not correct? All metal carbonates react with acid to give a salt, water and carbon dioxide Some metals react with acids to give salt and hydrogen All metal oxides react with water to give salt and acid Some non metal oxides react with water to form an acid 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—(iv), C—(i), D—(ii) A—(iii), B—(ii), C—(iv), D—(i) A—(ii), B—(i), C—(iv), D—(iii) A—(ii), B—(iv), C—(i), D—(iii) 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 ) Yellowish green Blue Red Yellow Loading … Question 1 of 16
