Question

WHAT DO YOU OBSERVE ON HEATING THE FOLLOWING SUBSTANCES :- *

4 points

SILVERY SUBSTANCE

EVOLUTION OF HEAT

ABSORPTION OF HEAT

MILKY WHITE PPT.

CALCIUM OXIDE AND WATER

MERCURY [II] OXIDE

SILVER NITRATE AND DILUTE HYDROCHLORIC ACID

NITROGEN AND OXYGEN

CALCIUM OXIDE AND WATER

MERCURY [II] OXIDE

SILVER NITRATE AND DILUTE HYDROCHLORIC ACID

NITROGEN AND OXYGEN

 

plz ans first four points are the ans. and last four points ques.

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Answer 1

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Sea water is a mixture of salts and water which cannot be separated except by evaporation. Therefore, sea water is considered homogeneous.

Sea water also contains mud, decayed plant, etc., other than salts and water, so it is heterogeneous also.