Which of the following is a non metal that remains liquid at room temperature?

• Phosphorous

• Bromine

• Chlorine

• Helium

Which of the following is used in pencils?

• Graphite

• Silicon

• Charcoal

• Phosphorous

The Battle of Plassey was fought in

• 1757

• 1782

• 1748

• 1764

Which is the lightest metal in the world

• carbon

• lithium

• hydrogen

• nitrogen

Which planet is known as the blue planet

• Earth

• Neptune

• Venus

• Saturn

Who invented facebook

• Mark Zuckerberg

• Benjamin Franklin

• Robert Fulton

• None of the above

Name one country which is present in both Asia n Europe

• USA

• INDIA

• VIETNAM

• TURKEY

Name the longest river on earth ?

• Ganga

• Nile

• Brahmaputra

• Tsangpo

NAme the smallest perfect number

• 0

• 2

• 6

• 4

When is the earth day celebrated?

• 22 april

• 22 august

• 12 april

• 12 august