A,B and C are all liquid ,Liquid A has a comparatively low boiling point on heating liquid A vaporises completely either alone or by mixing with petrol ,Liquid A is being used increasingly as a fuel in motor vehicles either alone or by mixing with petrol liquid B has very high boiling point it also vaporises completely on heating without leaving any residue liquid B is a conductor of electricity and used in making thermometers Liquid C has a moderate boiling point On heating liquid C vaporises leaving behind a white solid D which is used in cooking vegetables the condensation of vapours from C give a liquid E which turns anhydrous `CuSO_(4)` to blue
(a) which liquid could be an element ? name this element .
(b) which liquid could be a mixture ? name this mixture .
( c) which liquid could be a compound ? name this compound.
( d) what could the solid D be ?
(e ) what do you think is liquid E ?

Answer

(a) B; Mercury ( b) C; salt colution ( c) A ; Alcohol ( d) sodium chloride ( common salt ) ( e) Water .