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Number of water molecules in washing soda and soda ash respectively are 

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Number of water molecules in washing soda and soda ash respectively are 

(1) 10 and 1 

(2) 1 and 10 

(3) 1 and 0 

(4) 10 and 0

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(4) 10 and 0

Washing soda: Na2CO3.10H2O 

Soda ash : Na2CO3

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