Across
- 4. In projectors which lenses are used?
- 5. Magnetic effect of current gives rise to which force?
- 6. Due to which phenomena light rays emerging from a cinema machine spread wide on the screen?
- 7. Which metal is used by the jewellers to make gold and platinum ornaments heavier?
- 9. What type of a mirror is used in anti-shop-lifting-devices?
- 11. Ionic compounds are soluble in:
- 12. discovered the magnetic field of current?
- 13. Numismatics is the study of:
- 15. ----- is the first calculating device?
- 17. ------ Wegener given the theory of Plate tectonics?
- 18. Khorana Artificial ‘gene’ was created by:
- 19. Name the scientist who had discovered that earth revolves round the sun?
Down
- 1. Name the instrument that is used to measure Relative Humidity?
- 2. The gas emancipating through paddy field is :
- 3. Oncology is the study of:
- 8. Edmund Becquerel gave the concept of ------ effect
- 10. The Chemical evolution of life was proposed by:
- 13. The energy of food is measured in:
- 14. Which gases are released from the ground, minutes or hours before an earthquake is about to strike?
- 16. Ornithology is the study of