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A given amount of Fe^(2+) is oxidized b...

A given amount of ` Fe^(2+)` is oxidized by x mol of `MnO_4^(-)` in acidic medium. The number of mole of `Cr_2O_7^(2-)` required to oxidize the same amount of `Fe^(2+)` in acidic medium is

A

x

B

0.83 x

C

2.0 x

D

1.2 x

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2021 -CHEMISTRY (CATEGORY -I)
  1. The compounds A and B above are repectivley

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  2. For a spontaneous reaction at all temperatures which of the following ...

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  3. A given amount of Fe^(2+) is oxidized by x mol of MnO4^(-) in acidic ...

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  4. An element crystallizes in a body centred cubic lattice. The edge leng...

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  5. Molecular velocities of two gases at the same temperature (T) are u1 a...

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  6. When 20 g of naphthoic acid (C11H8O2) is dissolved in 50 g of benzene ...

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  7. The equilibrium constant for the reaction N2(g) + O2(g) hArr 2NO(g) is...

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  8. Under the same reaction conditions , initial concentration of 1.386 mo...

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  9. Which one of the following solutions will have highest conductivity ?

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  10. Indicate the products (X) and (Y) in the following reactions : Na2S ...

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  11. 2.5 ml 0.4 (M) weak monoacidic base (kb=1 xx 10^(-12) at 25^@ C ) is t...

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  12. Solubility products (K(sp)) of the salts of types MX, MX2 and M3X at t...

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  13. The reduction potential of hydrogen half-cell with be negative if

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  14. A saturated solution of BaSO(4) at 25^(@)C is 4xx10^(-5)M. The solubi...

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  15. A solution is made by a concentrated solution of Co(NO(3))(2), with a ...

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  16. Extraction of a metal (M) from its sulfide ore (M(2)S) involves the fo...

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  17. The white precipitate (Y), obtained on passing colourless and odourles...

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  18. Which structure has delocalised pi-electrons ?

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  19. The H(3)O^(+) ion has the following shape

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  20. For the reaction ""^(14)N(alpha,p)^(17)O,1.16MeV (Mass equivalent = 0....

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