The shape of a water molecule is
Linear
Pyramidal
Tetrahedral
V-shaped
When large hydrocarbon molecules are heated at high temperature in the presence of a catalyst to give smaller molecules, the process is known as
Disintegration
Polymerization
Cracking
Degradation
A catalyst increases the rate of a chemical reaction by providing a path that
Raises the activation energy
Increases the temperature
Lowers the activation energy
Increases the concentration
The removal of rust from iron by treatment with tetraoxosuplhate(VI)acid is based on the
Hydrolysis of the iron
Reaction of acid with base
Oxidation of the rust
Dehydration of the iron
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