Question 14 Marks
Electroplating is the process of adding a surface layer of metal on another metal.
$7.$ Which of these is true about electroplating?
Circle ‘Yes’ or ‘No’ for the correct response.
$8.$ Which of these is an example of electroplating?
$A.$ Colouring of jeans
$B.$ Painting of a wall
$C.$ Lamination of a photograph
$D.$ Gold plating of imitation jewelleries
$9. $ Sumit replaced all the bulbs in his home with $LEDs.$
After a month, he noticed that the electricity bill had decreased.
What was the most likely reason for the decrease in electricity bill?
$10.$ Distilled water is a bad conductor of electricity.
Why does rainwater conduct electricity?
$7.$ Which of these is true about electroplating?
Circle ‘Yes’ or ‘No’ for the correct response.
| Is the statement true? | Yes or No |
| The solution used contains ions of two metals. | Yes/No |
| Metal gets deposited on the electrode connected to the negative terminal. | Yes/No |
| A non-metal is used as the electrode connected to the positive terminal. | Yes/No |
$A.$ Colouring of jeans
$B.$ Painting of a wall
$C.$ Lamination of a photograph
$D.$ Gold plating of imitation jewelleries
$9. $ Sumit replaced all the bulbs in his home with $LEDs.$
After a month, he noticed that the electricity bill had decreased.
What was the most likely reason for the decrease in electricity bill?
$10.$ Distilled water is a bad conductor of electricity.
Why does rainwater conduct electricity?
Answer
View full question & answer→$7.$ No
Yes
No
$8. D.$ Gold plating of imitation jewelleries
$9.$ Mentions that $LEDs$ consume less electricity than bulbs.
$10.$ Mentions that rainwater contains dissolved salts that conduct electricity.
Yes
No
$8. D.$ Gold plating of imitation jewelleries
$9.$ Mentions that $LEDs$ consume less electricity than bulbs.
$10.$ Mentions that rainwater contains dissolved salts that conduct electricity.
