Practice Sheets & eNotes-Acid Bases & Salts

Acids, bases and salts Worksheet-1

Fill in the blanks:

1. Acids change the colour of litmus solution to ________.

2. Bases change the colour of litmus solution to ________.

3. Salts ________the colour of litmus solution.

4. Substances which change colour or odour in acidic or basic medium are called ________.

5. The colour of methyl orange in acidic and basic medium is ________ and________.

6. The colour of phenolphthalein in washing soda solution is ________.

7. The colour of moist litmus paper in calcium sulphate is ________.

8. H₂CO₃  is the formula of________.

Acids, bases and salts Worksheet-2

Fill in the blanks:

16. The pH of sodium chloride solution will be ________

17. The lower the pH, the ________ is acid.

18. The higher the pH, the ________ is acid.

19. Addition of baking soda to milk will ________ its pH.

20. Water gives ________ colour on universal indicator.

21. Quick lime is added to the soil when it becomes ________.

22. Decaying organic matter (manure or compost) is added to the soil when it becomes ________.

23. Salts in aqueous solution ________ electricity.

Acids, bases and salts Worksheet-3

Multiple Choice Questions:

1. Distilled water does not conduct the electricity whereas rain water does.

(A) Distilled water is germ free water

(B) Distilled water contains mineral ions.

(C) Rain water contains ions.

(D) Rain water contain microorganisms.

2. What is the colour of methyl orange in baking soda solution?

(A) Red                 (B) Yellow            (C) Orange