Electricity Worksheet-5

Electricity Worksheet-5

1. The negatively charged ions formed during dissociation are called :

(a) cations         (b) anions           (c) ions               (d) none of these

2. The anions are discharge at :

(a) cathode                                     (b) anode

(c) Cathode or anode                   (d) none of these

3. When the cells are connected in parallel, the current output of combination :

(a) increases                                  (b) decreases

(c) remains same                         (d) none of these

4. The symbol or    ( ) represents

(a) closed switch                           (b) open switch

(c) incomplete switch                  (d) none of these

5. The liquid used in bichromate cell is :

(a) potassium bichromate solution acidified with sulphuric acid

(b) potassium chromate solution acidified with sulphuric acid

(c) potassium sulphate solution acidified with sulphuric acid

(d) none of these

6. The positive terminal of a bichromate cell is :

(a) carbon rod                               (b) zinc rod

(c) copper rod                               (d) none of these

7. The process due to which the electric current in a simple voltaic cell dies on account of deposition of molecular hydrogen on the copper plate is called :

(a) local action                              (b) polarisation

(c) neutralisation                          (d) none of these

8. The polarisation takes place in a simple voltaic cell on account of the deposition of:

(a) atomic hydrogen on zinc plate

(b) atomic hydrogen on copper plate

(c) molecular hydrogen on zinc plate

(d) molecular hydrogen on copper plate

9. Which is not a small source of electric current?

(a) Cells                                          (b) Storage cells

(c) Button cells                             (d) Electric generator

10. The overhead electric cables used for the transmission of electric current are made of :

(a) aluminium  (b) zinc               (c) steel              (d) lead

Answer Key:

1. (b)
2. (b)
3. (a)
4. (b)
5. (a)
6. (a)
7. (b)
8. (d)
9. (d)
10. (a)