Q.

Identify the correct statement from the following.

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Start JEE / NEET / Foundation preparation at rupees 99/day !!

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An Intiative by Sri Chaitanya

a

Hydrogen is a better fuel than petrol

b

H2O2 reduces KMnO4 to Mn2+ in basic medium

c

Clarke's process is used to remove permanent hardness of water

d

NaCl is more soluble in heavy water than in ordinary water

answer is A.

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Detailed Solution

Hydrogen (calorific value = 143 kJ/g) is a better fuel than petrol (calorific value = 48.7 kJ/g).H2O2 reduces KMnO4 to MnO2 in basic medium.Clarke's process is used to remove temporary hardness of water.NaCl is less soluble in heavy water than in ordinary water
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