These solutions are explained in the simplest manner to make learning easy and effective for students. All the solutions are available here in a readable and downloadable format. Difference between conventional and non-conventional sources of energy:. The sources of energy which are being used since the early times are considered as the conventional sources of energy. The sources of energy which have been invented in recent times and are more efficient and comfortable are considered as the non-conventional sources of energy.
Answer: A mineral can be defined as a homogenous, naturally occurring substance with a definable internal structure. Minerals are found in varied forms in nature, ranging from the hardest diamond to the softest talc.
Answer: In igneous and metamorphic rocks, minerals may occur in the cracks, crevices, faults or joints. The smaller deposits are called veins and the larger ones are called lodes.
Metallic minerals like tin, copper, zinc and lead are obtained from veins and lodes. Answer: We need to conserve mineral resources as they are limited on the earth. It takes billions of years for them to be replenished in nature. Continued extraction of ores leads to increasing costs of extraction and a decrease in quality as well as quantity.
It takes millions of years for the formation of minerals. Thus, as compared to the current rate of consumption, the rate of replenishment of minerals is very slow.
In India, major coal deposits are found on the eastern Class 10th Geography Chapter 7 Ncert Solutions Media side of the country. Some of the main sites of coal are described below:. Solar energy is a renewable source of energy produced from the sunlight. It has a bright future in India due to the following reasons:. Jagranjosh Education Awards Click here if you missed it! This website uses cookie or similar technologies, to enhance your browsing experience and provide personalised recommendations.
By continuing to use our website, you agree to our Privacy Policy and Cookie Policy. Home 20 Trending Quiz Feedback Add to home. Metallic minerals which contain iron are called ferrous minerals. For example - iron ore, manganese, nickel, cobalt, etc.
Metallic minerals which do not contain iron are called non-ferrous minerals. For example - copper, bauxite, tin, etc. For example - firewood, cattle dung cake, coal, petroleum, natural gas, etc. For example - solar, wind, tidal, geothermal, biogas, nuclear energy, etc.
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