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Kunika Khandelwal 6 years, 2 months ago
Yogita Ingle 6 years, 2 months ago
| CNG | LPG |
| Its primary use is as an alternative for fuel in automobiles. | It has various uses such as heating and cooking in homes. They also have many other uses such as industrial and agricultural uses as well. |
| The primary component in CNG is methane. | The primary component in LPG is propane and Butane. |
| It produces very little greenhouse gases. | It produces carbon dioxide as a greenhouse gas and is much cleaner compared to gasoline. |
| It is very safe as it disperses rapidly into the air. | It is highly flammable as it is much heavier than air. |
| The primary source of obtaining CNG is from oil wells, bed methane wells, coal wells and even natural gas wells. | The main source of obtaining LPG is from the process of extracting natural gas from the reservoir. |
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Bindu V 6 years, 2 months ago
Yogita Ingle 6 years, 2 months ago
It is a chemical reaction in which you mix two solutions of two ionic substances and a solid ionic substance (a precipitate) forms.
For example, precipitation occurs when a part of the atmosphere saturates itself with water vapour and when the right temperature comes its condenses and precipitates. The two processes which make the air saturated are the cooling of air molecules and the addition of water vapour.
Posted by Arman Pradhan 6 years, 2 months ago
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Yogita Ingle 6 years, 2 months ago
| Prokaryotes | Eukaryotes | |
| Type of Cell | Always unicellular | Unicellular and multi-cellular |
| Cell size | Ranges in size from 0.2 μm – 2.0 μm in diameter | Size ranges from 10 μm – 100 μm in diameter |
| Cell wall | Usually present; chemically complex in nature | When present, chemically simple in nature |
| Nucleus | Absent | Present |
| Ribosomes | Present. Smaller in size and spherical in shape | Present. Comparatively larger in size and linear in shape |
| DNA arrangement | Circular | Linear |
| Mitochondria | Absent | Present |
| Cytoplasm | Present, but cell organelles absent | Present, cell organelles present |
Posted by Joy Vv 6 years, 2 months ago
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Yogita Ingle 6 years, 2 months ago
- Thorium is a chemical element with atomic number 90 and represented with the symbol ‘Th’ in the periodic table.
- In its pure form, it is a silvery white metal which is stable in air and remains lustrous for several months. When it reacts with oxides it slowly transforms into a gray color.
- Thorium is a weak radioactive metal as its isotopes are highly unstable. It is estimated that the element This is more abundant than Uranium in the Earth’s crust. It is found in small amounts in most rocks and soils.
- Thorium is named after Thor, The Scandinavian God of war. It was discovered by a Swedish Scientist named Jons Jacob Berzelius in the year 1828.
Posted by Ashi Shakya 6 years, 2 months ago
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Yogita Ingle 6 years, 2 months ago
In1665, Robert Hooke examined a thin slice of cork and observed that it consists of many little compartments, resembling a honeycomb structure. He made this observation through a self-designed microscope. He termed these boxes as cells, which is a Latin word for ‘a little room".
Posted by Tilattama Panigrahi 6 years, 2 months ago
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Yogita Ingle 6 years, 2 months ago
When we cannot reuse a source of energy after using it once we call them “conventional sources of energy” or “non-renewable energy resources”. They are the most important conventional sources of energy. These include coal, petroleum, natural gas and nuclear energy. Oil is the most widely used source of energy. Coal, petroleum and natural gas account for about 90% of world’s production of commercial energy and hydroelectric and nuclear power account for about 10%.
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Meghna Thapar 5 years, 10 months ago
An object having no electric charge on it is called an uncharged object whereas an object having electric charge on it is called a charged object.
If we take a used ball pen refill and rub it vigorously with a piece of polythene. Then bring it close to small pieces of paper. It attracts pieces of paper. When a plastic refill is rubbed with polythene, it acquires a small electric charge. Similarly, when a plastic comb is rubbed with dry hair, it acquires a small charge. These objects are called charged objects.
Posted by Anjali Prasad 6 years, 2 months ago
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Yogita Ingle 6 years, 1 month ago
The Agarias are a community of iron smelters. They are specialized in the craft of iron smelting. In the late 19th century a series of famines devastated the dry tracts of India. In central India, many of the Agaria iron smelters stopped work, deserted their villages and migrated, looking for some other work to survive the hard times. A large number of them never worked their furnaces again.
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Yogita Ingle 6 years, 2 months ago
The Revolt of 1857 was one of the first wars of Indian independence against the British. This revolt can aptly be termed the first war of Indian independence against the British. Kings, peasants, tribals, landlords and we sepoys, all were dissatisfied with the British rule.
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