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सभी प्रतियोगी परीक्षाओं में पूछे जाने वाले 1857 के क्रांति के प्रमुख केन्द्र और क्रांतिकारी ।

 सभी प्रतियोगी परीक्षाओं में पूछे जाने वाले 1857 के क्रांति  के प्रमुख केन्द्र और क्रांतिकारी ।    केन्द्र                     भारतीय नायक     दिल्ली                  बहादुर शाह जफर,                                बख्त खां   कानपुर।                नाना साहब   लखनऊ                          बेगम  हजरत महल     झांसी                               रानी लक्ष्मीबाई   इलाहाबाद              लियाकत अली   जगदीशपुर             कुंवर सिंह   बरेली            ...
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Detail explanation of coal, definition, types, formation,uses important questions

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                   Coal  Definition of coal. Coal is a black or brownish-black sedimentary rock that is primarily composed of carbon, along with varying amounts of hydrogen, sulfur, oxygen, and nitrogen. It is formed from the remains of plants that lived and died millions of years ago, which were subjected to high heat and pressure over long periods of time. Coal is commonly used as a fossil fuel for generating electricity and heat, as well as in industrial processes such as steel production. There are four main types of coal, classified based on carbon content and energy output:  anthracite ,  bituminous ,  sub-bituminous , and  lignite . Anthracite Characteristics : Anthracite is the highest rank of coal, with the highest carbon content (around 86-97%) and the lowest impurities. It has a shiny, metallic luster and is extremely hard. Moisture and Volatile Content : It contains very low moisture and volatile ...
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What is tidal energy, advantage, disadvantage, challenges

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भारत की प्रमुख घाटियां।

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