Question

Choose the correct option.

1. Electroplating is based on

(a) heating effect of electricity

(b) chemical effect of electricity

(c) physical effect of electricity

(d) magnetic effect of electricity

2. Copper is

(a) a good conductor

(b) an insulator

(c) both (a) and (b)

(d) none of these

3. Waste from an electroplating factory must be disposed of

(a) in the nearby river

(b) in the nearby pond

(c) in the nearby cornfield

(d) according to the disposal guidelines of Waste Management Bodies

4. An electrolyte is

(a) a metal

(b) a liquid that conducts current

(c) a non-metal

(d) none of these5. Pure or distilled water is a

(a) poor conductor

(b) good conductor

(c) both (a) and (b)

(d) none of these

6. Iron objects can be protected by electroplating them with

(a) chromium

(b) nickel

(c) zinc

(d) all of these

7. An electric lamp glows due to

(a) heating effect

(b) magnetic effect

(c) chemical effect

(d) physical effect

8. Electroplating prevents

(a) corrosion

(b) passing of current

(c) dissociation

(d) shining

9. Which of the following is not used for electroplating metal articles?

(a) Nickel

(b) Silver

(c) Chromium

(d) Sodium
10. Which of the following does not conduct electricity?

(a) Sugar solution

(b) Vinegar solution

(c) Lemon juice solution

(d) Caustic soda solution





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Answer 1

Answer:

1.    A

2.    B

3.    A

4.    C

5.    A

6.    D

7.    A

8.    B

9.    C

10. C

Answer 2

Answer:

1

ans. (b)

2.

ans. (a)

3 .

ans. (d)

4.

ans. (b)

5.

ans . (a)

6.

ans. (a)

7.

ans. (a)

8.

ans. (a)

9.

ans. (d).

10.

ans. (a)