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Which of the following statements are co...

Which of the following statements are correct?

A

S-S bond is present in `H_2S_2O_6`.

B

In peroxosulphuric acid `(H_2SO_5)` sulphur is in +6 oxidation state.

C

Iron powder along with `Al_2O_3` and `K_2O` is used as a catalyst in the preparation of `NH_3` by Haber’s process.

D

Change in enthalpy is positive for the preparation of `SO_3` by catalytic oxidation of `SO_2`.

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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
  1. Draw lewis structure of ammonium ion .

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  2. Express 1271 in roman numbers.

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  3. Which of the following statements are correct?

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  4. In which of the following reactions conc. H2SO4 is used as an oxidisin...

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  5. Which of the following statements are true?

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  6. Match the compounds given in Column I with the hybridisation and shape...

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  7. Express 1657 in roman numbers.

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  8. Express 1272 in roman numbers.

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  9. Match the species given in Column I with the shape given in Column I...

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  10. Express 1273 in roman numbers.

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  11. In the following questions a statement of assertion followed by a stat...

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  12. Assertion : HNO3 makes iron passive. Reason : HNO3 forms a protective ...

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  13. Unlike HCl, why HBr cannot be prepared by the action of concentrated s...

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  14. Assertion : Both rhombic and monoclinic sulphur exist as S8 but oxygen...

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  15. Which of the following reacts with NaNO2 + HCl at 273-278 K to give al...

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  16. Assertion : SF6 cannot be hydrolysed but SF4 can be. Reason : Six F at...

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  17. Which halogen has a tendency to form cations?

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  18. Give the disproportionation reaction of H3PO3.

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  19. Why ICI is more reactive than I2 ?

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  20. Name the halogen which forms only one oxoacid and write the formula of...

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