Finding materials for science projects or doing a science projects for school kids is a daunting task. Very often we as parents end up doing the whole project, https://modelshop.in is a good place to look for science projects. I believe they deliver anywhere in India.
My kits were little delayed but were nicely packed and the experiment material provided along with the kits made up for the delay. I must say it is different than the regular science toys or kits available in market, which are just fancy toys. These can actually teach and you can conduct serious science experiments.
Cons: The site was very slow, I think since they are not for profit so they are running it on slow servers. They should improve the user experience.
Another thing to mention is that you can’t expect much of customer service here.