In a refinery, petrol is obtained from c...

In a refinery, petrol is obtained from crude oil by the process of ....... .

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ATOMS AND MOLECULES
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MBD-IS MATTER AROUND US PURE-Example

Define an element.
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How are elements classified ?
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Name the metal which is liquid at room temperature
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What is metalloid ?
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Give two examples of metalloids.
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Give examples of non-metals.
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Give examples for metals.
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How many elements are known till today ?
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How many elements occur in nature ?
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How many elements are gases at room temperature ?
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Name five methods to separate mixtures,
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How are sugar crystals separated in a sugar factory ?
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The size of colloidal particals is in the range........ .
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Tyndall effect is shown by .... .
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He and Ne are..... gases.
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FeS + H2SO4 rarr
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In a refinery, petrol is obtained from crude oil by the process of ......
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Grass stains are removed from the clothing by using .... as solvent.
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Common salt is obtained from sea water by the process of....... .
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When caustic soda solution is added to an aqueous solution of coppe...
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