- “Ornithology” is the branch of science which deals with study of birds.
- The filament of an electric bulb is made of Tungsten.
- Harmful effect from the depletion of Earth’s Ozone layer is increased the amount of ultra violet rays will reach Earth’s surface.
- Treated bacteria or viruses or one of their proteins are known as Vaccines.
- The unit for measuring intensity of noise is called decibel.
- When water is heated from 0 C to 10 C, the volume of water first decreases, then increases.
- The boiling point of heavy water is 82 degree centigrade.
- A satellite moving round the earth with a uniform speed has uniform acceleration.
- Raw materials used for manufacture of glass are sand, soda and limestone.
- The nucleus of a hydrogen atom consists of one proton + one neutron.