Solution:On July 10, 2006, the Geosynchronous Satellite Launch Vehicle (GSLV) carrying the INSAT-4C communication satellite veered off course and exploded 60 seconds after lift-off.
It had a weight of 2168 kg and was developed by ISRO at a cost of Rs. 350 crore. At present, weighing about 5854 kg, GSAT-11 is the heaviest satellite built by ISRO. It was launched on December 5, 2018, from Kourou launch base, French Guiana by Ariane-5 VA-246.