What s the difference between hard and soft coal ?

1 Answers  

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Why is radiator used in a motor-ear ?

1 Answers  

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Why ph scale range is 14? Why it is not less or not greater than 14? Solution of hcl or hydrogen containing liquid has a ph. But if the solution is kmno4 here nothydrogen power does it ph?

0 Answers  

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How is cement manufactured ?

3 Answers  

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What is the difference between hard and soft water ?

2 Answers  

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Why is heat more oppressive on a damp hot day ?

1 Answers  

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Why a hot day in Calcutta causes more discomfort than are equally hot day in Delhi ?

1 Answers  

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What is Acids, Bases salts ?

2 Answers   Viva,

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Which is the main constituent in air ?

1 Answers  

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The heat of the sun reaches us and the intervening air is not heated up Why ?

2 Answers  

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how to do heavy metal test for colour sample?

1 Answers   Cipla,

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Why is salt thrown on the frozen road ?

2 Answers  

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