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Solution


Q.

Read the passage carefully and answer the following questions from (i) to (v):

 

A compound C of sodium forms a white powder. It is a constituent of baking powder and is used in some antacids. When heated, it gives a compound D which is anhydrous and absorbs water to become a hydrated salt. When this salt is kept in the open air, it loses water molecules in a process called efflorescence. When dissolved in water, it forms a strong base and a weak acid F.

 

(iv) Which among the following is compound F
1 CO2  
2 H2CO3  
3 NaOH  
4 H2O  

Ans.

(2)