Question

1. What is used as cathode in the process (a) Platinum Spiral
(b) Platinum grid.
(c) Platinum rod
(d) Platinum film.
2. Which of the following statement is correct (a) HCl and HNO3 is used for dissolution of sample (b) HNO3 and H2SO, is used for dissolution of sample (c) HCI, HNO3 and H2SO, is used for dissolution of sample. (d) None of the above is correct.
3. Which of the following statement is incorrect (a) Weigh the anode accurately. (b) To speed up the electrolysis heat the solution. (c) Electrodes must be washed before electrolysis.
(d) All of the above are correct.
4. Heating of the electrolyte is done for the following reason (a) To maintain a constant voltage
(b) To maintain constant current.
(c) To obtain uniform coating. (d) To speed up electrolysis.​

Answer 1

Answer:

1. Platinum spiral.

2. (c).

3. (c).

4. (d)...