the adventure

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Across
  1. 3. - Repository of knowledge and haven for readers and researchers (7)
  2. 4. - chhatrapati shivaji was earlier what terminus ? (8)
  3. 8. - Existence as it is, the state of __________ (7)
  4. 9. - Battle of __________, a significant chapter in Indian warfare (6
  5. 10. Process of __________, a bridge between phases (9)
  6. 11. - Chronicler and educator of the past, a skilled __________ of history(9)
Down
  1. 1. - Named after a prominent historical figure, the __________ Express (8)
  2. 2. - Branch of mathematics analyzing abrupt transformations, __________ Theory (11)
  3. 5. - Subatomic particle with a negative charge, an __________ (7)
  4. 6. - Subject that delves into the annals of time, __________ (7)
  5. 7. - Central and fortified part of a city (7)