1.

Match the following {:("List - I","List - II"),("A) "NaOH,"I) In fire extinguishers"),("B) "NaHCO_(3),"II) Water softner"),("C) "Na_(2)CO_(3),"III) Mercerising cotton"),("D) "NaCl,"IV) Table salt"):}

Answer»

`{:(A,B,C,D),(I,II,III,IV):}`
`{:(A,B,C,D),(III,I,IV,II):}`
`{:(A,B,C,D),(III,I,II,IV):}`
`{:(A,B,C,D),(I,III,II,IV):}`

ANSWER :C


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