Questions

Parabola, because when the coin is dropped at a particular point, it has the same velocity as the running train. So by Newton's first law, it continues its motion horizontally with that velocity. But then, it is also pulled down by earth's gravity continuously. In this situation its horizontal motion gives way to the parabolic motion until it reaches the ground.

A Needle works when it has thread in its eye that is in its tiny hole.

A bottle has a mouth from which we used to drink water or any juice. But it cannot smile.

To display current date and time in MS Excel, we use Now() method. 

Cohesion refers to attraction between molecules of the same kind while adhesion refers to attraction between different kinds of molecules

Heat transfer through radiation takes place in form of electromagnetic waves mainly in the infrared region. It depends on nature of the body, its temperature and kind & extent of its surface.