TRB MODEL QUESTIONS FOR CHEMISTRY
| 1. |
Retinol is the chemical name of |
| |
- A. Vitamin A
- B. Vitamin D
- C. Vitamin E
- D. Vitamin K
|
| 2. |
The chemical name of bauxite is |
| |
- A. Hydrated aluminium oxide
- B. Aluminium oxide
- C. Aluminium sulphite
- D. Aluminium chloride
|
| 3. |
The chief source of aluminium is |
| |
- A. Haematite
- B. Cargolite
- C. Bauxite
- D. Feldspar
|
| 4. |
Covalent bond is formed by |
| |
- A. Sharing of electrons
- B. Exchanging electrons
- C. Gain of electrons
- D. Loss of electrons
|
| 5. |
Drying oils contain a fairly large proportion of |
| |
- A. Proteins
- B. Fats
- C. Saturated fatty acids
- D. Unsaturated fatty acids
|
