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Science CBSE Homework Assignments
Class 10
Chemical reaction and equations
Endothermic, exothermic reaction and rancidity
1.
Exothermic and oxidation reaction
Question:
5
m.
Choose the best answer:
1.
Which of the following is not a physical change?
Boiling of ice to give water
Combustion of Liquefied Petroleum Gas (LPG)
Melting of ice to give water
Dissolution of salt in water
Boiling of water to give water vapour.
2.
Which among the following statement(s) is(are) true? Exposure of silver chloride to sunlight for a long duration turns grey due to
the formation of silver by decomposition of silver chloride
decomposition of chlorine gas from silver chloride
decomposition of silver gas from silver chloride
sublimation of silver chloride
oxidation of silver chloride
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