cooking light magazine

The specific heat of a substance is an important physical property because it tells us the suitability of a given substance for a specific purpose. Aluminium vessels are used in cooking because aluminium is a light metal. Hence, for a given volume, its thermal capacity wil..

Biogas - Animal dung in the form of dried cakes is also burned for domestic purposes. Animal dung contains vital nutrients. If burnt directly they produce a lot of smoke leading to air pollution. Instead animal dung can be converted into biogas which is a clean fuel. The residue which is rich in nu..

Man's quest for sources of energy is inexhaustible. Early man depended mainly on muscular energy and later began to use wind and flowing water as sources of energy. He learned the art of making and controlling fire. Fire became his source of light at night. He used fire for warmth a..

is a natural gas. It is produced from animal, water and weeds and other plants. India comes first in developing and using biogas technology. It is cheap, non-polluting and labour-saving fuel. Biogas can be used for cooking, lighting, and in vehicles. Solar energy, wind energy ..

India produces only half of the national requirement of petroleum products and it imports the rest from other countries. Natural gas is the most popular petroleum product. During last two decades, the consumption of natural gas resources have increased tenfold. If we need to save fossil fuels from ..

Man's quest for sources of energy is inexhaustible. Early man depended mainly on muscular energy and later began to use wind and flowing water as sources of energy. He learned the art of making and controlling fire. Fire became his source of light at night. He used fire for warmth and rea..

Junction diodes are of many types and solar cells are one such. Its working is based on production of potential difference by sunlight. In other words, it is a junction diode that can convert light energy into electrical energy. In such a junction one of them either P or N is made thin so..

Solar Cells - Junction diodes are of many types and solar cells are one such. Its working is based on production of potential difference by sunlight. In other words, it is a junction diode that can convert light energy into electrical energy. In such a junction one of them either P or N i..

Question: Kiran Prakash recently saw the following illustration in the 'Junior Science'. The magazine invited comments from its readers. Since he is interested in UFOs, he decided to write a letter to them expressing his views. Using ideas from the unit 'Mystery' as well as your..

Question 1 - Question: Kiran Prakash recently saw the following illustration in the 'Junior Science'. The magazine invited comments from its readers. Since he is interested in UFOs, he decided to write a letter to them expressing his views. Using ideas from the unit 'Mystery' as well as y..