Income elasticity of demand for giffen goods

What is the atomic number of silicon, a component of quartz?

Match the following gases with their typical uses:

List I (Gas)                               List II (Uses)

Which of the following gas is used to fill balloons.

Carbohydrates are organic compounds composed of which elements? 

Formula of ‘Quick Lime’ is __________

Sphalerite is an ore/mineral of -

Dry powder fire extinguishers contain

Which of the following pollutants is the major contributor to photochemical smog?

Which statements correctly describe Phosphoric Acid?

(I) Phosphoric Acid is a corrosive, colorless, odorless, and inorganic acid.

In the vulcanization process, natural rubber is heated with which element to enhance its properties?