What order do the majority of stored food grain insect

Which of the following is the least penetrating power rays ?

Sound and light waves both have ___________ .

Which device uses ultrasonic waves for getting images of internal organs of human body?

Who defined the law of gravitation? 

The S.I. unit of the electric flux is

One Kilowatt hour is equal to—

The waves which are less than 20Hz are known as 

Which compound is used to prepare water proof clothes?

For which type of motion, the distance time graph is not a straight line and can be any kind of curve?

In the atmosphere ultraviolet rays are absorbed by –