For a 33 mark question? You would need to distinguish between the types of experiments and deal with them all separately, evaluating throughout and you also need to show A2 knowledge on experiments.
So rather than just going through the pros and cons of experiments, you need to link it explicitly to theories and how this helps certain theories achieve their goal for Sociology. So for example, you would state that positivists want to see the ways in which structure shapes action, meaning experiments are used because they can manipulate a variable to see how it changed action, generalising into cause and effect laws in the social world. You could then criticise this with the interpretivist view that Sociology needs to understand the social world view of the individual, and experiments do not allow for verstehen or a subjective understanding and are essentially useless.
You of course need to go through the basic pros and cons so they lack validity if lab experiments, hard to generalise from a small sample, lab experiments are useless as you cannot control all variables etc. Try and link to theories as well to show synoptic knowledge, so for example Functionalists would be the most willing to use experiments due to their desire to see how roles/order is created by society. Feminists would criticise them as they are another way in which patriarchal oppression works against women, controlling them in experimental conditions to do the researchers biddings etc.
Make sure to cover lab, field and comparative experiments, showing the pros and cons of each and how some deal with the cons of another. So for example, field experiments are more valid, but even harder to control. The comparative method is easier in terms of control, but it isn't based on empiricism so it can be deemed as a less valid approach that lacks understanding of society.
For examples, it's pretty hard to think of some but of the top of my head I've got;
Rosenthal and Jacobson for education-Manipulating teachers expectations of pupils and seeing if it led to a self fulfilling prophecy
Wilson-The implementation of zero tolerance in NYC to see if it reduced crime rates
Noon-Sent out identical job applications (same qualifications etc) to companies, one had the name Patel, the other smith, to see if there was any difference in employment opportunities.
Hope this helped