Subject :NSO Class : Class 6
Change X : Cooling a mixture of air and kerosene vapours so that liquid kerosene condenses out.
Change Y : Burning a mixture of air and kerosene
vapours.
What type of changes X and Y are?
AX - Chemical change, Y - Reversible change
BX - Physical change, Y - Chemical change
CX - Chemical change, Y - Physical change
DX - Reversible change, Y - Physical change
Ans 1:
Class : Class 4
d canbe the answer
Ans 2:
Class : Class 6
D option can be correct.