Explanation: Bhanu Pratap Sharma is the Chairman of BBB.
Explanation: Two wetlands of India are in Montreux Record: Keoladeo National Park (Rajasthan) and Loktak Lake (Manipur). Chilka lake (Odisha) was placed in the record but was later removed from it.
It is a region of space whose mass is so large and dense that not even light can escape its gravitational attraction.
Sagittarius A* is the only black hole in our galaxy.
Explanation: Sagittarius A* isn't the only black hole in our galaxy, though. Earlier this year, astronomers discovered another 12 within three light-years of it, suggesting there could be upwards of 10,000 black holes around the galactic centre.