What is 'polymerase chain reaction'?

The isotope of uranium capable of sustaining chain reactions is 1 U-235 2 U-238 3 U-239 4 None of these

What is the difference between nuclear fission and fission chain reaction?

What is polymerase chain reaction used for?

Polymer chain growth can be terminated by b-hydride elimination or by reaction with h2. What is one advantage of the h2 reaction? : Polymer Chemistry