1. The animal kingdom is formally classified into major groups known as   Phyla   Orders   Sub Phyla   Families   Hint Half-n-half Clue   2. The Earth is surrounded by an insulating blanket of gases which protects it from the light and heat of the Sun. This insulating layer is called the   Biosphere   Lithosphere   Hydrosphere   Atmosphere   Half-n-half Clue   3. Which gas in the atmosphere protects us from harmful ultraviolet radiations?   Nitrogen   Carbon Dioxide   Oxygen   Ozone   Half-n-half Clue   4. The three states of matter are solid, liquid and gas.   True   False   5. Which rare element would you associate with Marie and Pierre Curie?   Platinum   Uranium   Radium   Gold   Half-n-half Clue   6. The science that deals with the study of sound is known as acoustics.   True   False   7. Who discovered Penicillin?   Sir Alexander Fleming   Robert Koch   Louis Pasteur   Watson and Crick   Half-n-half Clue