For the following questions answer them individually
What is the number of atoms constituting a molecule known as?
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:
One of the most destructive volcanoes in recent times has been the Kilauea volcano.
Where is it located?
If Y is the brother of X , Y is Z’s son then Z’s father is X’s ........