List of the biggest, highest, largest,longest and smallest in India.

1. The largest river bridge in India. Bhupen Hazarika Bridge Dhola Sadiya, Lohit river.
2. The highest dam bhakhra dam on Satluj river Punjab
3. The longest tunnel chenani nashri tunnel Jammu Kashmir
4. The largest lake Wular Lake Jammu and Kashmir
5. The largest auditorium Sri shanmukhananda hall Mumbai.
6. The largest desert, Thar Rajasthan
7. The largest cave temple Kailash Temple Ellora Maharashtra
8. The largest zoo of India is zoological garden Kolkata
9. The largest mosque of India is Jama Masjid of Delhi
10. Highest peak of India is Godwin Austen K2 8611
11. The largest delta of India is Sundarban West Bengal
12. The longest corridor of India is Ramnath Swamy temple at Rameswaram Tamil Nadu.
13. Highest waterfall of India is Jog or garsoppa Karnataka.
14. The longest road of India is Grand Trunk Road Kolkata to Delhi
15. The largest dome is Gol Gumbaz Bijapur in Karnataka.
16. The highest gateway is Buland Darwaza Fatehpur Sikri Uttar Pradesh.
17. The longest river of India is the Ganga 2640 km long
18. The largest museum of India is Indian Museum Kolkata.
19. The tallest statue of India is Gomateshwara Karnataka
20. The Largest public sector bank of India in State Bank of India.
21. The biggest cantilever bridge of India Rabindra Setu Howrah Bridge Kolkata.
22. The longest canal Indira Gandhi Canal or Rajasthan Canal Rajasthan
23. The longest railway platform of India is Gorakhpur Junction.
24. The longest railway Tunnel of India Pir Panjal Railway tunnel Jammu and Kashmir 11.215 kilometre
25. The biggest stadium of India is your Bharti Salt Lake Stadium Kolkata
26. The longest passenger train route of India is Dibrugarh to Kanyakumari
27. The oldest church of India is Saint Thomas Church at palayar Trichur Kerala
28. The longest national highway of India NH7 Varanasi to Kanyakumari
29. The state with longest coastline of India in Gujarat
30. Largest lake of the Isles devtal lake Gadwal Uttarakhand
31. The largest saline water lake of India is Chilka lake Orissa
32. The largest freshwater lake of India is Kolleru Lake Andhra Pradesh
33. The largest cave of India is Amarnath Jammu Kashmir.
34. The largest river of South India Godavari
35. The longest dam of India Hirakud Dam Odisha
36. The highest gallantry award of India Param Vir Chakra
37. The highest award of India is  Bharat Ratna
38. The largest Gurdwara of India Golden Temple Amritsar
39. The biggest Church of India is Saint Cathedral at Old Goa
40. The tallest TV Tower Fazilka Punjab
41. The South Indian state with longest coastline Andhra Pradesh
42. The longest sea beach of India is Marina Beach Chennai
43. The highest road of India is Road at khardungla in Leh,  Manali sector.
44. The largest artificial lake of India is Govind Sagar lake located at Nangal Dam.
45. The deepest river valley Alaknanda and Bhagirathi
46. The largest river without data Narmada and Tapti.
47. The highest battlefield and the longest Glacier Siachen Glacier.
48. The biggest river Island Majuli Island located at Brahmaputra Assam
49. The largest Planetarium.  Birla Planetarium Kolkata
50. The highest airport.   Leh airport Ladakh.