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Cl(2)O(7) is the anhydride of...

`Cl_(2)O_(7)` is the anhydride of

A

`HOCl`

B

`HClO_(2)`

C

`HClO_(3)`

D

`HClO_(4)`

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The anhydride of HClO_4 is-

In volumetric analysis, why is K_(2)Cr_(2)O_(7) used to prepare the standard solution and not Na_(2)Cr_(2)O_(7) ?

(1) MnO_(4)^(-)(aq)+8H^(+)(aq)+5e rarr Mn^(2+)(aq)+4H_(2)O(l), E^(@)=+1.51V (2) Cr_(2)O_7)^(2-)(aq)+14H^(+)+6e rarr 2Cr^(3+)(aq)+7H_(2)O(l), E^(@)=+1.38V (3) Cl_(2)(g)+2e rarr 2Cl^(-)(aq), E^(@)=+1.40V KMnO_(4) and K_(2)Cr_(2)O_(7) both are well known oxidising agent and used in quantitative analysis. If a solution of a reducing agent contains HCl, which one between these two should not be used as an oxidising agent?

For Cr_(2)O_(7)^(2-)+14H^(+)+6e rarr 2Cr^(3+)+7H_(2)O , what is the quantity of electricity in coulomb needed to reduce 1 mol of Cr_(2)O_(7)^(2-) ?

At pH = 12, Cr_(2)O_(7)^(2-) changes to -

At 400K, the decomposition of gaseous Cl_(2)O_(7) " to "Cl_(2) and O_(2)(g) follows first order kinetics. (1 ) After 55s at 400k, the pressure of Cl_(2)O_(7)(g) falls from 0.062 to 0.044atm. Calculate k. (2) Calculate the pressure of Cl_(2)O_(7) at 100s after the beginning of decomposition.

Arrange according to the instruction given (i) Al_(2)O_(3),P_(2)O_(5),Cl_(2)O_(7),SO_(3) (increasing order of acidic) (ii) MgO,ZnO,CaO,Na_(2)O,CuO (increasing order of basicity).

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2018-CHEMISTRY
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  15. The number of unpaired electros is Ni( atomic number =28) are

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  16. Which of the following has the strongest H-bond?

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  17. The half life of C^(14) is 5760 years. For a 200 mg sample of C^(14), ...

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  18. Ferric ion forms a Prussian blue precipitate due to the formation of

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