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) and (ii) (i) and (iii) (i), (ii) and (iv) (i), (iii) and (iv) 2. One of the constituents of baking powder is sodium hydrogencarbonate, the other constituent is sulphuric acid acetic acid tartaric 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 corrosive acidic basic neutral 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. equal to 0 equal to 7 less than 7 more than 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) (ii) and (iii) (i) and (ii) (ii) and (iv) 7. Which one of the following can be used as an acid–base indicator by a visually impared student? Petunia leaves Vanilla essence Litmus Turmeric 8. Which of the following substance will not give carbon dioxide on treatment with dilute acid? Lime Limestone Baking soda Marble 9. Which of the following is acidic in nature? Lime water Human blood Lime juice Antacid 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 (i) and (iii) (ii) and (iv) (ii) only (iv) only 11. Which of the following is used for dissolution of gold? Hydrochloric acid Aqua regia Nitric acid Sulphuric 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? NH4OH NaOH KOH C2H5 OH 14. Which of the following statements is not correct? Some metals react with acids to give salt and hydrogen Some non metal oxides react with water to form an acid 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 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 ) Red Yellowish green Yellow Blue Loading … Question 1 of 16
