TRB MODEL QUESTIONS FOR PHYSICS
| 16. |
Which of the following is used in match indusrty? |
| |
- A. sodium chloride
- B. sodium carbonate
- C. potassium chlorate
- D. sodium bicarbonate
|
| 17. |
Normal temperature of human body is |
| |
- A. 37°C
- B. 37 K
- C. 90 K
- D. 100°C
|
| 18. |
An substance for sublimating substance is |
| |
- A. sulphur
- B. camphor
- C. copper sulphate
- D. sodium chloride
|
| 19. |
The conversation of a vapour gas into a liquid by cooling is known as |
| |
- A. melting
- B. condensation
- C. freezing
- D. evaporation
|
| 20. |
The molecular weight of water is |
| |
|
