Question: Which instrument is used to measure atmospheric pressure?

• Answer: Barometer

Question: Which metal is the lightest?

• Answer: Lithium

Question: How many elements are there in the periodic table?

• Answer: 118

Question: Which is the longest river in the world?

• Answer: The Nile

Question: Where is Harvard University situated?

• Answer: Massachusetts, US

Question: What does LED stand for?

• Answer: Light Emitting Diode

Question: Which is the smallest planet in our solar system?

• Answer: Mercury