Questions

_________ is a natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, especially near the northern or southern magnetic pole.

Resistance switching is normally employed in

Which of the following increases the rate of heart beat?

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.
An old unmarried woman

When iron is exposed to moist air, a reddish brown coating of hydrated Iron (III) Oxide (Fe2O3) is deposited on its surface. This reddish brown coating is called

The Line of Cancer passes through how many states of India?

Constantan is alloyed from ...... metals.

Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?