The physical properties of a substance are……
a) color
b) shape
c) size
d) all of these
The properties of chemical changes are……..
a) temporary and irreversible
b) permanent and reversible
c) temporary and reversible
d) permanent and irreversible
A substance which adds mineral to the soil is...
a) oxygen
b) fertilizer
c) acids
d) none of these
Waste materials of plants and animals are called
a) manure
b) fertilizer
c) wastage
d) none of these
A change that can go forwards or backwards…
a) physical change
b) chemical change
c) reversible change
d) sudden change
A change that can go forwards or backwards…
a) physical change
b) chemical change
c) reversible change
d) sudden change
