Teacher's Day Puzzle

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Across
  1. 3. an institution for educating children.
  2. 5. the action or power of focusing all one's attention.
  3. 6. a room in which a class of pupils or students is taught.
  4. 9. National Language
  5. 12. Calculations
  6. 13. advise or train
  7. 15. About the universe
  8. 18. Language spoken in 2 states of south India
  9. 20. Chemicals and reactions
Down
  1. 1. an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program.
  2. 2. About biodiversity
  3. 4. International language
  4. 7. About our Past
  5. 8. the provision of what is necessary for the health, welfare, maintenance, and protection of someone or something.
  6. 10. Guru of lord rama
  7. 11. About the people around us
  8. 14. Structure of matter
  9. 16. intense and eager enjoyment, interest, or approval.
  10. 17. Guru
  11. 19. The future builders