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Chemistry can prove to be a blessing or ...

Chemistry can prove to be a blessing or a curse depends upon the uses to which it is put. Comment.

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PRADEEP-SOME BASIC CONCEPTS OF CHEMISTRY-ADDITIONAL QUESTIONS (SHORT ANSWER QUESTIONS)
  1. Chemistry can prove to be a blessing or a curse depends upon the uses ...

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  2. Give examples of homogeneous mixture in different physical states (two...

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  3. Define element compound and mixture

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  4. Classify the following as pure substances or mixtures. Separate the pu...

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  5. Give three main points of difference between a compound and a mixture.

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  6. What does symbol SI signify ? Name the seven basic SI units ?

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  7. Define precision and accuracy.

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  8. What do you mean by significant figures?

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  9. Under what conditions the zeros in a number are significant ?

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  10. What do you understand by unit conversion factor ? How does it help to...

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  11. After rounding off 1.235 and 1.225, we will have their answer respecti...

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  12. Give one experiment involving a chemical reaction to prove that the la...

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  13. Copper oxide obtained by heating copper carbonate or copper nitrate co...

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  14. N and O combine with H to form NH(3) and H(2)O and they combine with e...

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  15. Define Gay Lussac's law of gaseous volume. Explain with one suitable e...

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  16. What are the postulates of Modern Atomic Theory?

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  17. Which isotope is used as a reference on the atomic scale ? What is one...

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  18. Why atomic mass is an average value ? Explain with suitable example.

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  19. How is mole related to (i) mass, (ii) volume and (iii) number of mol...

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  20. What is the SI definition of mole?

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