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(a) what is meant by (i) element (ii)...

(a) what is meant by (i) element (ii) compounds ,and (iii ) mixture ? Write down the names of two elements, two compounds and two mixture .
(b) Classify the following into elements ,compounds and mixtues:
marble ,Air Gold ,Brass,sand ,Diamond,Graphite,petroleum, common salt,sea ,-water , chalk.

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LAKHMIR SINGH & MANJIT KAUR-IS MATTER AROUND US PURE -Exercise
  1. Which of the following are not compounds? (a) Chlorine gas (b) Pota...

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  2. (a) state the main points of difference between homogenous and ...

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  3. (a) what is meant by (i) element (ii) compounds ,and (iii ) mixt...

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  4. (a) what are (i) metals (ii) non-metals ,and (iii) metallloids ? Giv...

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  5. List the points of differences between homogeneous and heterogenous mi...

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  6. (a) what are the three general classes of matter ? Give one exam...

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  7. Which of the following is not an element ?

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  8. Which of the following are compounds ? (i) Co (ii) No (iii) NO ...

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  9. One of the following substance in neither a good conductor of electri...

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  10. Which of the following is not a mixture ?

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  11. The element which is not common between the compounds called baking s...

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  12. "Is malleable and ductile " best describes:

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  13. which one of the following is not a metalloid?

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  14. the element which normally exist in the liquid state are :

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  15. when a mixture of iron powder and sulphur powder is heated stro...

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  16. The property / properties which enable copper metal to be used for m...

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  17. On the basis of composition of matter, milk is considered to be :

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  18. Which of the the following statements are true for pure substan...

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  19. Which of the following are homogeneous in nature? (i) Ice (ii) Wo...

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  20. Two chemical species X and Y combine together to form a product P whic...

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