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Mr. Dubey • 97.30K Points
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Q. According to IS : 2720 - 1965, the composition of a dispersing solution used in pipette analysis for determining the size of particles, is

  • (A) sodium-hexametaphosphate 33 g, sodium carbonate 7 g and distilled water one litre
  • (B) sodium-hexametaphosphate 7 g, sodium carbonate 33 g and distilled water one litre
  • (C) sodium-hexametaphosphate 23 g, sodium carbonate 17 g and distilled water one litre
  • (D) None of these
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