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The pair in which phosphorus atoms have ...

The pair in which phosphorus atoms have a formal oxidation state of +3 is

A

orthophosphorous and pyrophosphorous acids

B

pyrophosphorous and hypophosphoric acids

C

orthophosphorous and hypophosphoric acids

D

pyrophosphorous and pyrophosphoric acids.

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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
  1. Which one has the highest boiling point?

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  2. The reaction of zinc with dilute and concentrated nitric acid, respect...

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  3. The pair in which phosphorus atoms have a formal oxidation state of +3...

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  4. Na2S2O3 is reduced by I2 to :

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  5. The function of Fe(OH)3 in the Contact process is

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  6. Sulphur trioxide gas when dissolved in H2SO4, the product obtained is

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  7. Which of the following contains P - O - P bond ?

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  8. NO2 is not obtained on heating

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  9. The least stable hydride of 15th group elements is

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  10. Which of the following is most easily hydrolysed amongst the following...

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  11. What happens when 70% of copper react with 30% of zinc?

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  12. Nitric acid can be obtained from ammonia via the formation of the inte...

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  13. An inorganic salt (A) is decomposed on heating to give two products (B...

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  14. What happens when 90% of copper combines with 10% of aluminium?

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  15. If Cl2 is passed through hot aqueous NaOH, the products formed have Cl...

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  16. What happens when 88% of copper and 12% of tin react together?

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  17. What happens when 2.4% of chromium, 1.5% of carbon and 90-95% of iron ...

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  18. Which of the following compounds of xenon has pyramidal geometry ?

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  19. On heating with concentrated NaOH solution in an inert atmosphere of C...

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  20. Sulphuryl chloride (SO2Cl2) reacts with white phosphorus (P4) to give

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