What s the difference between hard and soft coal ?
Answer / guest
Hard from of coal contains more carbon and less
hydro-carbons than the other from
| Is This Answer Correct ? | 7 Yes | 4 No |
How can fresh water be made from salt water ?
How many millilitre is equal to 1 litre and how many microliter is equal to litre?
who invented the first projector?
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Explain the Modern Atomic Theory ?
Though the secondary cell can be recharged again and again, still they have a lifetime. Why?
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