Sample Test Paper CHAPTER Acid, Base and Salt (CBSE) Class X

CHAPTER: ACID BASE AND SALT                         TOTAL MARKS: 20

CLASS: X                                                                               TIME: 30min

Board: CBSE

1. Write chemical formula of baking soda? (1)

2. Why common salt becomes sticky during rainy season? (1)

3. Give formula of two acids which are monobasic. (1)

4. An aqueous solution with pH zero is________ (acidic/basic/neutral/amphoteric). (1)

5. What name is given to the water in the compound Copper sulphate-5-water? (1)

6. How bee stings are treated at home? (1)

7. Explain why? Blue vitriol change to white upon heating. (1)

8. Which has higher pH.? A concentrated or dilute solution of HCL? (1)

9. How will you show that acetic acid is monobasic acid (1)

10. Why? Anhydrous calcium chloride is used in desiccators? (1)

11. Why does not an acid show any acidic behavior is the absence of water? (2)

12. Why alkalis like sodium hydroxide and potassium hydroxide should not be left

exposed to air? (2)

   13. Write following

(i) Define an acid.

(ii) What is an alkali?

(iii) Explain the meaning of the term acid salt? (3)

14. What will you observe when:

(i) Red litmus is introduced into a solution of sodium sulphate.

(ii)Methyl orange is added to dil HCl.

(iii)Blue litmus is introduced into a solution of ferric chloride. (3)