1. What does the formula CHCI3 stands for?
[A]Hydrogen peroxide
[B]Trichloromethane
[C]Sulphuric Acid
[D]Hydrochloric Acid
2. Brass gets discoloured due to the presence of _________________________ in the air.
[A]Nitrogen
[B]Hydrogen sulphide
[C]Carbon dioxide
[D]Oxygen
3. Which non-metal remains liquid at room temperature?
[A]Helium
[B]Phosphorous
[C]Bromine
[D]Chlorine
4. What is the scientific study of animals called?
[A]Entomology
[B]Anthropology
[C]Physiology
[D]Zoology
5. Who discovered the science of genetics?
[A]Gregor Mendel
[B]Johannes Kepler
[C]Nikola Tesla
[D]Samuel Morse
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