Q. According to IS : 2720 - 1965, the composition of a dispersing solution used in pipette analysis for determining the size of particles, is (Solved)
1. sodium-hexametaphosphate 33 g, sodium carbonate 7 g and distilled water one litre
2. sodium-hexametaphosphate 7 g, sodium carbonate 33 g and distilled water one litre
3. sodium-hexametaphosphate 23 g, sodium carbonate 17 g and distilled water one litre
4. None of these
- a. sodium-hexametaphosphate 33 g, sodium carbonate 7 g and distilled water one litre