Multiple Choice Question Answer XVI — task. Science CBSE, Class 9.

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1. A change in which there is no change in chemical properties is

Chemical change
Nuclear change
Physical change
None of these

2. The principle of chromatography is

All liquids are not miscible in water
The rate of diffusion of liquids varies
Salts with lower solubilities crystallize out from saturated solution when cooled
Liquids with lower boiling points boil off first

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