Hello Varsha,
Both the colleges you listed above are both the top colleges in the country, on a personal note NIT warangal is an older institution and IIT hyderabad is a new IIT, you will get good exposure and opportunities in the both the colleges, so it will completely depend upon the choice of branch you are interested in , if you are interested in ece go for warangal, if in mechanical and facinated by IIT brand name go for IIT Hyderabad , take decision completely based on your interest of branch, both the colleges would provide you excellent placements also as a matter of fact in rankings IIT hyderabad is ranked up to what warangal is ranked i.e IIT Hyderabad is in top 10, warangal in top 20-30.
Hope this helps

IIT Hyderabad

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NIT Warangal

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