MCQ
When phosphine is heated with air it bums to gives …………
- AOrthophosphoric acid
- ✓Metaphosphoric acid
- CPyrophosphoric acid
- DPhosphoroustrioxide
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| Column-I | Column-II |
| A. LDPE | 1. Non-stick utensils |
| B. HDPE | 2. Wool for making blankets |
| C. Teflon | 3 Toys |
| D. Orlon | 4. Pipes |
| Column I | Column II |
| A. Vitamin $B _1$ | 1. Pantothenic acid |
| B. Vitamin $B _2$ | 2. Niacin |
| C. Vitamin $B_3$ | 3. Thiamin |
| D. Vitamin $B_5$ | 4. Riboflavin |