Question

MCQS
1. Which one of the following is acidic?
(a) Lemon juice (b) Tomatoes (c) Milk (d) All
2. Which one of the following will turn red litmus blue?
(a) Vinegar (b) Baking soda solution (c) Lemon juice (d) Soft
drinks
3. Which one of the following will turn blue litmus red?
(a) Vinegar (b) Lime water Baking soda solution (d) Washing
soda solution
4. Methyl orange is
(a) Pink in acidic medium, yellow in basic medium
(b) Yellow in acidic medium, pink in basic medium
(c) Colourless in acidic medium, pink in basic medium
(d) Pink in acidic medium, colourless in basic medium,
5. Lime water is
(a) Cao (b) Ca(OH)2 (c) CaCO3 (d) CaCl2
6. The nature of calcium phosphate is present in tooth enamel is
(a) Basic (b) Amphoteric (c) Acidic (d) Neutral
7. Which of the following salts has no water of crystallization?
(a) Blue vitriol (b) Washing soda (c) Baking soda (d) Gypsum
8. The function of quick lime in soda lime mixture is to
(a) Absorb moisture present in soda lime
(b) Increase the efficiency of soda lime
(c) Increase the pH of soda lime
(d) Take part in reaction with NaOH
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Answer 1

Answer:

1. (a) all.

2.(b) baking soda solution.

3.(a) vinegar.

4. (a) pink in acidic medium ,yellow in basic medium .

5. (b) Ca(OH)2 .

6.(a) basic.

7.(c) baking soda.

8.(a) absorb moisture present in soda lime.

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Answer 2

• Lemon juice, tomatoes and milk all are acidic.

The correct option is d all.

• Baking soda solution will turn red litmus blue.

The correct option is b.

• Vinegar will turn blue litmus red.

The correct option is a.

• Methyl orange is pink in acidic medium, yellow in basic medium

The correct option is a.

• Lime water is Ca(OH)2.

The correct option is b.

• The nature of calcium phosphate is present in tooth enamel is basic.

The correct option is a.

• Baking soda has no water of crystallization.

The correct option is c.

• The function of quick lime in the soda-lime mixture is to absorb moisture present in soda lime

The correct option is a.