A change in the mass of specific substances can takeplace in _____ change.
Chemical
Physical
Both a & b
None of these
Which change is temporary and easily reversible?
Permanent
Irreversible
In which change no new substance is formed ?
Glowing of can electric bulb is a ______ change.
During the sublimation of Iodine what changes will you observe?
Energy is either absorbed or evolved during ________________ change.
Temporary
Reversible
Which change is permanent not easiliy reversible?
Heating of sulphur is a _________ change
When we heat the sugar what change will occur?
Both a and b
Burning of paper is a ___________ change.
