Assignment No - 2 Acids, Bases and Salts | Class 10th

        

Assignment No - 2

Acids, Bases and Salts

Que 11. How does a strong acid differ from a concentrated acid?

Que 12. Why is Plaster of Paris written as CaSO₄.½H₂O? How is it possible to have half a water molecule attached to CuSO₄?

Que 13. Name a salt of a strong acid HNO₃ and a weak base like NH₄OH. Represent the reaction that takes place.

Que 14. i) Name a strong base and a weak base.

   ii) Name a hydrated salt.

Que15: A solution turns red litmus blue, its pH is likely to be 

(a) 1         (b) 4          (c) 5         (d) 10

Que 16. A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains 

(a) NaCl             (b) HCl             (c) LiCl             (d) KCl

Que 17. 10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount of HCl solution (the same solution as before) required to neutralise it will be 

(a) 4 mL         (b) 8mL         (c) 12 mL     (d) 16 mL

Que 18. Which one of the following types of medicines is used for treating indigestion? Antibiotic (b) Analgesic (c) Antacid (d) Antiseptic

Que 19. Name the following: 

a) Two non-hydrated crystalline salts            b). Two neutral salts        

c) Two basic salts                                              d) Two acid salts

Que 20. Name the salts of sulphuric acid.




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