TNPSC Chemistry Quiz Questions and Answers
| 5. |
What is the most common element in the universe? |
| |
- A. Hydrogen
- B. Helium
- C. Iron
- D. Oxygen
|
| 6. |
Oil of vitriol is |
| |
- A. Nitric acid
- B. Phosphoric acid
- C. Sulphuric acid
- D. Phosphoric acid
|
| 7. |
Rat poison contains |
| |
- A. White phosphorous
- B. Red phosphorous
- C. Scarlet phosphorous
- D. Violet phosphorous
|
| 8. |
Rocket fuel is |
| |
- A. Oxygen and methane
- B. Oxygen
- C. Hydrazine and dinitrogen tetroxide
- D. Ozone
|
