MCQ
The role of phosphate in detergent powder is …………..
- Acontrol pH level of the detergent water mixture
- ✓remove $Ca ^{2+}$ and $Mg ^{2+}$ ions from water that causes hardness of water
- Cprovide whiteness to the fabric
- Dmore soluble in soft water
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| Column - I | Column - II |
| A. $CH _3- CH _2 NO _2$ | 1. Alkyl nitrite |
| B. $C _6 H _5- NO _2$ | 2. Aryl nitro alkane |
| C. $CH _3- O - N = O$ | 3. Aliphatic nitro alkane |
| D. $C _6 H _5- CH _2 NO _2$ | 4. Nitro arenes |
| Column-I | Column-II |
| A. Natural polymer | 1. Viscose rayon |
| B. Synthetic polymer | 2. Silk |
| C. Semi synthetic polymer | 3. Bakelite |
| D. Thermo setting polymer | 4. Polythene |