Respiration of living beings is
Physical change
Chemical change
Transparent change
Time interval change
The new substance which obtained by any chemical reaction is known as
Reactant
Catalyst
Product
Pure substance
In a chemical equation, the number of the atoms of the reactants equal to the number of the atoms of the
Matter
Energy
A chemical change is a change, in which new substances are formed is
Temporary
Permanent
oxidation
Reduction
A reddish brown metal is
Platinum
Gold
Copper
Silver
The product obtained when the water is treated with carbon dioxide is
Carbon monoxide
Carbonic acid (hydrogen carbonate)
Acetic acid
Lactic acid
Of these which one can neither be created nor be destroyed?
Light
Heat
Change
Burning of candle is a change of
Colour
Physical level
Chemical level
A temporary change in which no new substance is formed is called
Chemical reaction
Permanent change
