Tag: science & technology

Coal is the largest primary source of commercial energy in India. Of the 28 000 MT (million tonnes) of lignite reserves in the country, 26 000 MT is concentrated in two states. Name them?

Lead is one of the two most toxic chemicals used in petrol that cause brain damage and leukemia. Which is the other?

Name the revolution that was responsible for the beginning of large scale use of coal.

There are three different types of coal. Two of them release a great deal of pollutants into the air whereas the third releases less smoke and is considered to be less polluting. Name this type.

Name the main element that is required to run a nuclear plant.

Of the following burning fossil fuels, which is considered to be the cleanest?

The main purpose of a refinery is to

Crude oil is made of

Which among the following is most energy efficient?

Solar cells are simple photovoltaic devices that convert solar energy directly into electricity and are manufactured from the second-most abundant element in the earth’s crust. Name it.