If mutations do not occur from now on, would evolution still occur

The definition of evolution is the change in allele frequencies in a population over time. Stopping mutation would prevent new alleles from being formed but natural selection would still act on all exising alleles and cause evolution as the fittest individuals reproduce the most. Eventually less sucessfull alleles will disapear until only one allele for each gene is left (as a result of selection and random genetic drift).Once that has happened no evolution occurs anymore.

No because all evolution is, is mutations occur randomly and they will either be harmfull or an advantage.
If it is harmfull then the organism will be less likely to survive and pass on the mutation.
If it is an advantage then the organism will be more likely to survive to pass on the genes and over time they will be more prevelent in the population.
So if mutations stopped then there would be no more variations etc.
Hope that helped

Absolutely.

Not only would natural selection continue to act, gene flow and genetic drift would also contribute.

The impact of mutations are overplayed by a lot of the public and even trained biologists.

Evolution is dynamic, and never static. It acts on the current conditions, which themselves are constantly changing. A lot of traits and alleles are never fixed because of this, so change continues to occur.

Yes it would, for a time, but then eventually evolution would grind almost to a halt. The reason for this is that the most advantageous existing genes in a species, would propagate throughout the species, but without a source of new genes, the species would converge on the optimal set of genes for the species.

Mutations are to evolution, what fuel is to your car. If there were no more gas stations, you could still drive your car for a while, but without a new source of fuel, it would eventually grind to a halt.