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Dushyant Singh from Shree Ram Centenial School, Indore

Subject :NSO Class : Class 6

Some commonly occurring changes around us are classified in the given table.

S. No.	Change	Reversible change	Physical change
I.	Melting of ice cream	✓	✓
II.	Burning of crackers	✓	✗
III.	Stitching a shirt from a fabric	✓	✓
IV.	Dissolving baking soda in water	✓	✓
V.	Baking of cake	✗	✗
VI.	Curdling of milk	✗	✓

Which of the above changes are classified incorrectly?

AI, II, III and V only
BII, IV and VI only
CI, III and V only
DII, III, IV and VI only

Ans 1:

Sarang Shete from Amanora School, Pune

Class : Class 8

Surya Oleti from National Public School HSR, Bangalore

Class : Class 7