Questions

The radius of curvature of a concave mirror is 30 cm. Following Cartesian Sign Convention, its focal length is expressed as

In 2004, NASA launched the Messenger Spacecraft to study ___.

Name the respiratory organs of insects

Who discovered the ABO blood group system?

Involuntary actions in human beings such as blood pressure, salivation and vomiting are controlled by the

The Law of Demand is based on the concept that people _______.

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

To burn the midnight oil

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

While an electron (1)/ carries a negative electrical (2) charge, a neutron is neutral. (3)/No Error (4)