Which vitamin is produced in our skin when exposed to sunlight?

Which metal is used in making electrical wires?

Which part of the human brain controls balance and coordination?

Ozone layer in the atmosphere protects us from which radiation?

Which of the following is NOT a greenhouse gas?

Which vitamin helps in blood clotting?

Which element is used in pencil lead?

Which acid is present in the stomach to help digestion?

The scientific study of earthquakes is called:

Which gas is filled in balloons to make them float?