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Percentage of nitrogen in air by volume…...

Percentage of nitrogen in air by volume………….

A

0.209

B

0.781

C

0.0003

D

0.001

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VGS PUBLICATION-BRILLIANT-IS MATTER PURE?-EXERCISE
  1. The term element is first used by……….

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  2. Percentage of oxygen in air by volume…………..

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  3. Percentage of nitrogen in air by volume………….

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  4. Percentage of argon in air by volume……………

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  5. Components of blood sample are separated by……………

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  6. Napthalene in water separated by ……..

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  7. Petrochemicals are separated by

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  8. A) kerosene+salt B) water +salt C) water+ sugar D) salt+ sugar In th...

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  9. a) sugar water b) tincture of iodine c) soda water d) salt water The...

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  10. Milk, butter,cheese,cream,gel,boot polish These are

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  11. (a) set A:fog,clouds,mist (b) set B: foam , rubber, sponge ( c) Se...

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  12. Churning makes the lighter components to come to the surface when a mi...

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  13. Generally solid solutions are available in

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  14. 80 ml of solution contains 20 g of solute .Calculate the concentration...

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  15. Anitha,observed, 'Shake well before use' on a label of cough strup bot...

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  16. Ravi observed a beam of sun light passing through a small hole on the ...

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  17. Tyndall effect is observed by

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  18. Which of the given mixtures cannot be separated by simple physical met...

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  19. Which method is suitable to separate salt from sea water?

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  20. Petroleum is separated into its components is

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