Which of the following area of India is not the most threatened by earthquakes?

When a plastic comb is rubbed with dry hair, the hair get positively charged by friction. In this porcess:

Which of the following part of the earth is made up of molten iron?

The place inside the earth's crust where the earthquake is generated is called:

An inflated rubber balloon is rubbed with a woollen cloth whereas a ballpoint pen refill is rubbed with a polythene bag. Which of these will get positively charged?

A) Inflated rubber balloon

B) Woollen cloth

C) Ballpoint pen refill

D) Polythene bag