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Q40) The total number of electrons present in 18ml of wtaer ( density of water 1g/ml) is ... [ IIT 1980]


from the data for density of water 18 m=18 g=1 mole
One molecule of water contains=2+8=10 electrons
∴ 1 mole of water contains=10 × 6.023× 1023
Answer: (c)