Q. According to Indian standards, the dispersing solution used in pipette method, for the determination of size of particle consists of (Solved)
1. 7 g sodium carbonate, 43 g sodium hexameta-phosphate and 1 litre distilled water
2. 7 g sodium carbonate, 33 g sodium hexameta-phosphate and 1 litre distilled water
3. 7 g sodium carbonate, 23 g sodium hexameta-phosphate and 1 litre distilled water
4. any one of the above
- b. 7 g sodium carbonate, 33 g sodium hexameta-phosphate and 1 litre distilled water