Which of the following is the cheapest and environmentally friendly source of electricity: Hydroelectric Power
What is the capacity of Lungs: 6 liters
How many lenses does a pinhole camera use: No lens
The study of life is called: Biology
The volume of an atom is calculated by using: Atomic radius and formula for volume of a sphere
A process of breaking down large hydrocarbons into smaller molecules using heat is called: Thermal cracking
Which mineral is essential for building bones and teeth, muscle functioning and blood clotting: Calcium
Ozone is a gas found in the layer: Stratosphere
The SI unit of electric current is: Ampere
Who invented the soda water: Joseph Priestley
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