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Subjects
Science CBSE
Class 10
Chemical reaction and equations
Textbook questions

31. NCERT Exemplar IV

Exercise condition:

2 m.

1. Which of the following is not a physical change?

Combustion of Liquefied Petroleum Gas (LPG)
Boiling of ice to give water
Dissolution of salt in water
Mixing sand and water.
Melting of ice to give water

2. Which among the following statement(s) is(are) true? Exposure of silver chloride to sunlight for a long duration turns grey due to __________.

oxidation of silver chloride
decomposition of chlorine gas from silver chloride
the formation of silver by decomposition of silver chloride
decomposition of silver gas from silver chloride
sublimation of silver chloride

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