The alkaloid naturally found in coffee, cocoa and colanut is

Oiled paper is?

During uniform motion of an object along a straight line, its ___________ remains constant with time.

Lewis concept does explain the behaviour of __________

In which of the following classifications are the elements arranged in the order of their increasing atomic number?

Halogens are belonging to:

Electronic configuration of the outer shell of the element Gd with atomic number 64 is

What will be the work done by 3 moles of an ideal gas when it expands spontaneously in vacuum?