Bhagat Singh was sentenced to death because of

What is the dominant component of Earth's atmosphere?

What element is primarily used in a Proton Fusion Engine?

On which of the following date, the minimum distance between the Earth and the Sun occurs?

Identify the gas that is not considered a permanent part of the Earth's atmosphere.

The number of ______ is equal to the difference between the mass number of the atom and the atomic number.

Which one of the following is responsible for nuclear fission?

_______ fiber is used in making bulletproof vests.

 Which type of Fire extinguisher is used for Petroleum fire? 

Which hormone is released in excess during excitement or stress?

What is the scientific study of stars, planets, and space called?