A change in the mass of specific substances can takeplace in _____ change.
Chemical
Physical
Both a & b
None of these
Energy is either absorbed or evolved during ________________ change.
Temporary
Reversible
Which depend on the composition or change in composition of a substance?
physical properties
Chemical properties
Density
Melting point
Conversion of milk to curd is a _________ change
Which change is permanent not easiliy reversible?
Permanent
Irreversible
During the sublimation of Iodine what changes will you observe?
Freezing of liquids to solids is a _____________ change
Reaction between iodine and phosphorous is taken place by which method?
Heating
Mixing
Light
Electricity
In which change no new substance is formed ?
Rusting of iron is a ________________ change
