Questions

Which country topped the list on "World Happiness Index", 2015 published by the sustainable Development Solutions Network (SDSN)?

Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre?

Who proposed Continental drift theory?

'Gallon' is commonly used

Particulates (< 1 μm size) remaining suspended in air indefinitely and transported by wind currents are called

Venus is the _______ planet from the Sun.

The largest dolphin species is the orca, also called as ________.