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Subject :NSO    Class : Class 6

Identify the chemical changes in the given list.
I. Photosynthesis
II. Slaking of lime
III. Burning of coal
IV. Glowing of a blub
V. Expansion of a metal

AI, II and III only
BIV and V only
CI and III only
DI and IV only


Slaking Of Lime is Physical Change not Chemical Change.

Ans 1:

Class : Class 8
Please explain!

Ans 2:

Class : Class 6
AN ENTIRELY NEW SUBSTANCE IS FORMED (Ca(OH)2, HENCE CHEMICAL CHANGE.

Ans 3:

Class : Class 6
it is chemical change

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