Across
- 4. Yeast used in making bread is a
- 5. Mineral termed as "fool's gold"
- 9. Scattering of light in colloids or suspensions
- 12. Artificial sweetener 550 times sweeter than sugar
- 14. Father of physics
- 15. Rest mass of a photon
Down
- 1. Liquid silver
- 2. Father of modern physics
- 3. Household fuel that powers jet planes
- 6. Naturally occurring radioactive substance present in indoor air
- 7. Only Mammal that lays eggs
- 8. Total number of time zones on the earth
- 10. Alloy of copper and zinc
- 11. Number of men who have walked on the moon
- 13. Prefix indicating something is same, equal or constant