Chemistry Questions and Answers
| 69. |
Protein metabolism is carried out by |
| |
- A. Vitamin A
- B. Vitamin B
- C. Vitamin B2
- D. Vitamin D
|
| 70. |
Which one of the following substance is used for preservation of food grains? |
| |
- A. potassium antimony tartrate
- B. vinegar
- C. sodium benzoate
- D. sodium chloride
|
| 71. |
The alcohol used in power alcohol is |
| |
- A. methyl alcohol
- B. ethyl alcohol
- C. propanol
- D. methyl alcohol
|
| 72. |
In general, a metal is extracted from its oxide ore by |
| |
- A. oxidation process
- B. electrolysis process
- C. reduction process
- D. electrolysis
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