1.

Which ofthe following is not achemical change ?

Answer»

Passing of steam over redhot coke.
Change in the COLOUR of dilute nitric acid upon LONG standing.
Absorption of moisture by `P_(2)O_(5)`.
Absorption of moistureby `CaCl_(2)` .

Solution :ANHYDROUS`CaCl_(2)` , absorbs moisture TILL it becomes saturated and changes its physical state . Hence it is a deliquencent substance.


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