What harmful gas is released by factories and vehicles 

Plant which does not bear flower but have seed–

The major component used in preparation of different types of glasses is :

In which of the following fields Nobel Prize is not given? 

The manufacture of iron from iron ore involves the process of 

In which state Goal Gumaj situated ?

Some tips and related energy conversions are given below?
(i) Electrical Generator - Electrical from Mechanical
(ii) Electric motor - electro-to-mechanical
(iii) Diesel engine - electric from light
(iv) Solar cells - chemical to mechanical
Which of the above pairs is related to it?

A mixture of water and alcohol can be separated by