Science Puzzle

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Across
  1. 3. Supercooled liquid
  2. 5. Chief architecture of Indian atomic energy program
  3. 8. Adding oxygen to form an oxide
  4. 9. Age of fishes
  5. 10. natural radioactivity
  6. 12. Substance continually deforms under an applied shear stress
  7. 14. Cryogenic engines are used in
  8. 17. Solid CO2
  9. 18. Kimberley Process
  10. 19. Colloidal gold + molten glass
  11. 20. National chemistry laboratory is situated in
Down
  1. 1. Basic unit of light and all other electromagnetic radiation
  2. 2. anti-satellite missile tested by India on 27th March 2019
  3. 4. Instrument used to measure force and velocity of wind
  4. 6. C8H7 N3O2
  5. 7. Anti-radiation missile developed by DRDO in 2020
  6. 11. city which hosted the Indian science congress in 2020
  7. 13. Velocity at which a falling object stops accelerating
  8. 15. Longitudinal waves cannot travel through
  9. 16. Catalytic converter are generally made of