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Why helium does not form any compound?...

Why helium does not form any compound?

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UNITED BOOK HOUSE-HIGHER SECONDARY EXAMINATION 2018-EXAMPLE
  1. Write one harmful environmental effect of freons.

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  2. How would you distinguish between the following pair of compounds by a...

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  3. How would you convert?

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  4. Write down the products of the following reaction. CH3OCH2CH3overset(c...

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  5. Write the reagents for the following conversions:

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  6. Distinguish between the following two compounds by a chemcial reaction...

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  7. Distinguish between the following two compounds by a chemcial reaction...

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  8. What is meant by instrantaneous reaction rate?

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  9. What is activation energy ?

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  10. For a first order reaction , show that time required for 99% completio...

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  11. Establish the integrated rate equation for a first order reaction invo...

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  12. The half-life of a zero order reaction is x second. If the reaction ta...

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  13. Why helium does not form any compound?

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  14. Give one example of mixed oxide. Why is it called mixed oxide?

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  15. Draw the structure of H2SO3.

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  16. Benzoic acid on reaction with SOCI2 gives (A).(A) on reduction with Pd...

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  17. Identify A, B, C and D in the following steps of the reaction of aceta...

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  18. An organic comppound produces acetic acid and ethanol on acid hydrolys...

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  19. Write the structures of A to D in the following reactions: R CO R over...

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  20. How would you convert?

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