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According to Indian standards, the dispersing solution used in pipette method, for the determination of size of particle consists of

[A].	7 g sodium carbonate, 43 g sodium hexameta-phosphate and 1 litre distilled water	[B].	7 g sodium carbonate, 33 g sodium hexameta-phosphate and 1 litre distilled water
[C].	7 g sodium carbonate, 23 g sodium hexameta-phosphate and 1 litre distilled water	[D].	any one of the above

Answer: Option B