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Which one has the lowest boiling point ?...

Which one has the lowest boiling point ?

A

`H_(2)O`

B

`H_(2)S`

C

`H_(2)Se`

D

`H_(2)Te`

Text Solution

Verified by Experts

The correct Answer is:
B
`H_(2)O` has highest boiling point due to `H`-bonding but down the group the boiling point increases with increasing molecular weight (as magnitude of van der Waal's force increases ) and thus `H_(2)S` has lowest boiling point amongst the hydrides of the oxygen family.
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RESONANCE ENGLISH-P BLOCK ELEMENTS-Exercise 1 part 2 objective que
  1. Nitrogen is obtained by the thermal decomposition of :

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  2. Nitrogen gas is prepared :

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  3. Which of the following compound is a tribasic acid ?

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  4. Which one has the lowest boiling point ?

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  5. The compound which on strong heating gives oxygen is :

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  6. Ozone layer is being depleted. This is due to :

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  7. A considerable part of the harmful ultraviolet radiation of the sun do...

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  8. Estimation of ozone can be made quantitatively by :

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  9. Sulphur on oxidation with hot sulphuric acid gives :

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  10. Which of the following compounds gives a mixture of SO(2) and SO(3) ...

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  11. SO(2) can reduce :

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  12. H(2)S is far more volatile than water because :

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  13. When H(2)S is passed through acidified K(2)Cr(2)O(7) solution, the sol...

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  14. H(2)SO(4) has very high corrosive action on skin because

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  15. Sulphuric acid is considered as the king of chemicals. The prosperity ...

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  16. Out of H(2)S(2)O(3),H(2)S(4)O(6),H(2)SO(5) and H(2)S(2)O(8) peroxy aci...

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  17. The term 'thio' is used in the names of all of the following compounds...

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  18. The mass of 5 mole of electron is:

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  19. Hydrolysis of one mole of peroxy disulphuric acid produces

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  20. How many grams of dibasic acid (mol. weight 100) should be present in ...

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