Glowing of can electric bulb is a ______ change.
Chemical
Physical
Both a & b
None of these
Conversion of milk to curd is a _________ change
Reaction between iodine and phosphorous is taken place by which method?
Heating
Mixing
Light
Electricity
A change in the mass of specific substances can takeplace in _____ change.
Heating of sulphur is a _________ change
Which change is permanent not easiliy reversible?
Permanent
Irreversible
In which change no new substance is formed ?
Freezing of liquids to solids is a _____________ change
Which depend on the composition or change in composition of a substance?
physical properties
Chemical properties
Density
Melting point
During the electrolysis of water __________ changes occurs
Both a and b