Questions

The trajectory of the bullet is a parabola

Dust particles such as coal dust(smoke) are fine particle of a solid (carbon in the case of smoke) dispersed in air. They are colloidal systems and the particles are charged either positive or negative. In an applied electrical field, they are attracted towards the opposite electrodes. Movement of the particles towards the electrodes is known as 'electrophoresis'. Hence electrophoresis is applied to remove smoke within the chimeny itself without allowing it to escape into the air and cause nuisance.

312-Article of the Indian Constitution deals with the creation of All India Services.

An industry with fast economic growth from the starting days itself which has future importance. Industries like petrochemical industry, hydrogen fuel production, food processing industry, space tourism, and online encyclopedias.

Progeria is a rare genetic disordr which involves symptoms resembloing aspects of aging, manifested at a very early age.
The term is often used in reference to Hutchinson - gilford progeria syndrome(HGPS).

National Institute of Aeronautical Engineering is located at Dehradun, Uttaranchal, India.