TNPSC Chemistry Model Question Papers
| 5. |
Vinegar is |
| |
- A. Ethyl alcohol
- B. Methyl alcohol
- C. Dil.formic acid
- D. Dil.acetic acid
|
| 6. |
When quick lime is added to water |
| |
- A. Heat is absorbed
- B. Heat is liberated
- C. Temperature decreases
- D. None of these
|
| 7. |
Which one of the following contains maximum percentage of nitrogen by mass? |
| |
- A. Urea
- B. Ammonium cyanide
- C. Ammonium carbonate
- D. Ammonium nitrate
|
| 8. |
Commercially sodium bicarbonate is known as |
| |
- A. Washing soda
- B. Soda ash
- C. Bleaching powder
- D. Baking soda
|
