A train crossed a 140 m long platform in 15 seconds and a 180 m long platform in 17 seconds. The speed of the train was

What is the number of atoms constituting a molecule known as?

What is the amount of work done when a body moves under a force of 1 N at a distance of 1 meter in the direction of the force?

The repeated reflection that results in persistence of sound is called

Assuming that the numbers in each of the following figures follow a similar pattern, select the option that can replace the question mark (?) in figure C.

What is the name of the new Android App that has been launched by Sachin Tendulkar in 2017?

Which of the following will yield a recurring decimal?

One horse power is