The changes which are brought and controlled by man is called
Natural changes
Nan made changes
Chemical changes
Physical changes
The changes that occur in nature on their own are called
Man made changes
Ripening of fruits is a __________ change.
Undesirable
Desirable
Natural
Reversible change
The bacteria which is involved in curdling of milk is
Lactobacillus
Streptococci
Bacillus cereus
None of these
A change harmful to us is a _______ change.
Slow
Fast
Tooth decay is an example of _________ change.
slow
fast
undesirable
none of these
Heart beat is a _________ change.
None periodic
Periodic
Reversible
Irreversible change.
The formation of frost is
Sublimation
Deposition
Vapourisation
Decomposition
Burning of coal is ____________ change.
endothermic
exothermic
periodic
Change of seasons is a _________ change.
man made
natural
one of these
