CBSE CLASS-10 SCIENCE CHAPTER-02 ACIDS BASES AND SALT QUIZ NO 1 TOTAL QUESTIONS = 19 Mock Test Quiz Free MCQ pyqonline.com

CBSE CLASS-10 SCIENCE CHAPTER-02 ACIDS BASES AND SALT
QUIZ NO 1
TOTAL QUESTIONS = 19

1. Farmers neutralise the effect of Acidity on the soil by adding –

A. Gypsum B. Caustic soda C. Baking soda D. Slaked lime

2. Which of the following is a strong acid?

A. HCl pH 1 B. Lemon juice pH 2.2 C. CH3COOH pH 5 D. Pure Milk pH 6

3. pH value less than 7 indicates that the solution is –

A. Acidic B. Neutral C. Basic D. No effect

4. Which Acid is present in Tomato?

A. Oxalic Acid B. HCl C. Lactic Acid D. Citric Acid

5. An aqueous solution turns the red litmus solution blue. Excess addition of which of the following solutions would reverse the change?

A. Lime B. Baking powder C. Ammonium hydroxide solution D. Hydrochloric acid

6. Which acid is present in tamarind?

A. Tartaric acid B. Lactic Acid C. Citric Acid D. Oxalic Acid

7. Lactic Acid is present in –

A. Vinegar B. Curd C. Orange D. Tea

8. Sodium carbonate reacts with hydrochloric acid and produces –

A. NaCl B. H2O C. All of the above D. CO2

9. CuSO4.5H2O: In this Compound, the water molecule is called –

A. Pure water B. Soda water C. Water of crystallisation D. None of these

10. Which of the following is neutral salt?

A. Na2CO3 B. CH3COONH4 C. NH4Cl D. CH3COONa

11. Which salt is acidic in nature?

A. NaCl B. Na2CO3 C. CH3COONH4 D. NH4Cl

12. Which of the following salts does not contain water of crystallisation?

A. Washing soda B. Baking soda C. Blue vitriol D. Gypsum

13. What happens when a solution of an acid is mixed with a solution of a base in a test tube?
(i) The temperature of the solution increases
(ii) The temperature of the solution decreases
(iii) The temperature of the solution remains the same
(iv) Salt formation takes place

A. (i) and (iv) B. (ii) and (iii) C. (i) and (iii) D. (i) only

14. At what temperature is gypsum heated to form Plaster of Paris?

A. 100°C B. 80°C C. 70°C D. 35°C

15. When a base reacts with a metal, it forms a salt, and hydrogen gas is released. By what method can the presence of hydrogen be detected?

A. by a burning candle B. by litmus paper C. by methyl orange D. by water

16. What is the chemical formula of POP (Plaster of Paris)?

A. CaSO4.1/2H2O B. CaCO3.1/2H2 C. CaSO4.3H2O D. CaSO4.2H2O

17. In which pH range does our body work to survive in the atmosphere?

A. 7.5 to 12.5 B. 2.3 to 7.0 C. 7.0 to 7.8 D. 5.5 to 8.5

18. Na2CO3.10H2O is known as –

A. Baking powder B. Bleaching powder C. Washing soda D. Baking soda

19. Which of the following are present in a dilute Aqueous solution of hydrochloric acid?

A. H3O + Cl– B. Cl– + OH– C. H3O + OH– D. Unionised HCl

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