The Sun is a __________.
Star
Planet
Asteroid
Meteor

The average adult has a blood volume of about __________ liters.
4
5
6
7

The most abundant element in the universe is __________.
Oxygen
Hydrogen
Carbon Dioxide
Silicon

The most abundant element in the Earth's crust is __________.
Oxygen
Hydrogen
Carbon Dioxide
Silicon

Each day human body breathe in __________ liters of air.
5,000 to 10,000
10,000 to 15,000
15,000 to 20,000
20,000 to 25,000

Deficiency of Vitamin-D results in __________.
night blindness
rickets
scurvy
hair fall

The SI unit of "pressure" is _________.
pascal
joule
tesla
henry

The most densest substance on the Earth is __________.
Platinum
Copper
Steel
Osmium

A camera uses a __________ to form an image.
convex lens
concave lens
condenser lens
none of these

Which from the following is NOT a conductor?
Aluminium
Silicon
Graphite
All are conductors