Q78 of 252 Page 107

Naphthalene can be separated for sand:

The process of sublimation is used to separate that component of a solid-solid mixture which sublimes on heating. Naphthalene sublimes on heating.

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76

The material which is added to water during purification process at the water works so as to disinfect it is :

 77

The technique which is used to separate particles of a solid suspended in a liquid quickly is called:

 79

Which of the following cannot be separated from air by the process of fractional distillation?

 80

The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :