Like you mentioned, you must bring a form of ID. Because you live in India, this form of ID must be a passport.
You will be provided a scratch pad. It looks like this
. You have ten pages of laminated graph paper and a marker. You can ask for a new one at any time. I suggest only asking for a new one after the quantitative section to save time. You only get one at a time and must return them before leaving.
You can bring snacks with you, but you may not bring them into the testing room. Most testing centers have a waiting room with lockers where you can keep everything.
I hope that helps
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