Hey!

please mention the name of college and branch for which you are asking about the number of companies for placements. However, in general for top colleges like NITs or UPES or VIt etc. for engineering courses such as petroleum, cse, ece the most common companies are microsoft, TCS, wipro, infosys, L&T HC, Amzon, flipkart, Byju's, sclumberger, exxon mobil, baker hughes etc.

Thankyou