H C Verma Solutions for Chapter: Sources of Energy, Exercise 1: EXERCISES

What is the ultimate source of the energy of fossil fuels?

Among fossil fuels, which is the least polluting?

In a box-type solar cooker, what is the range of temperature (in $°\mathrm{C}$) that can be achieved in two to three hours? (choose out of: $100$ to $140$, $50$ to $90$, $150$ to $200$)

Can a solar panel be used directly to power the TV set in your home? (Yes/No)

Name the process by which the sun produces its energy.

Which process is carried out at a higher temperature: nuclear fusion or nuclear fission?

Solar cells are made from special materials called _____.

A nuclear reaction in uranium starts when a slow-moving _____ is absorbed by the nucleus of $\mathrm{U}-235$.