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Q.

The following are statements regarding sodium carbonate i) The formula of salt soda is Na2CO3.10H2O ii) Black ash is a mixture of CaCO3+Na2S iii) The principle involved in the preparation of Na2CO3 by Solvay process is very low solubility of NaHCO3

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a

i and iii are correct

b

i and ii are correct

c

ii and iii are correct

d

all are correct

answer is A.

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Detailed Solution

black ash is sodium carbonate and calcium sulphide mixture
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