CROSS WORD-SK1

123456789101112131415161718192021
Across
  1. 4. mass of the sun
  2. 6. converts chemical energy to electrical
  3. 8. catalytic convertors are madeup
  4. 12. the mass of the star is two times
  5. 17. invented first computer
  6. 18. hg and na street lamps light up
  7. 19. snakes,crocodiles are
  8. 20. type of computer invented by china in
  9. 21. the substance alter the rate of the
Down
  1. 1. atomic bombs principle
  2. 2. jawless animal(shark/myxine)
  3. 3. most commonly used bleaching powder
  4. 5. father of chemistry
  5. 7. collection of rays
  6. 9. waves used in artificial satellites
  7. 10. father of taxonomy
  8. 11. communication
  9. 13. type of uninersal gate
  10. 14. type of selection control statement
  11. 15. type of computer
  12. 16. biological name for humans
  13. 19. biological name for hibiscus