The p-Block Elements

Bihar Board Class 12 · Chemistry · 73 past questions

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1. Q9 2026 Set A

   In which of the following processes is nitric acid manufactured from ammonia ?

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2. Q10 2026 Set A2019 Set D

   Which of the following gases cannot be collected over water ?

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3. Q16 2025 Set D

   Ammonia can be dried by

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4. Q18 2025 Set D

   The maximum covalency of nitrogen is

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5. Q22 2024 Set D

   Which of the following oxides of nitrogen is called laughing gas ?

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6. Q42 2019 Set D

   The formula of Nitric acid is -

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7. Q48 2019 Set D

   Nitric acid is prepared by -

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8. Q50 2019 Set D

   Ammonia changes the moist red litmus paper into -

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9. Q52 2018

   Mercuric chloride reacts with ammonia gas and forms white precipitate. The molecular formula of white…

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10. Q54 2018

    Most stable oxidation state of Bismuth is-

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11. Q56 2018

    Nitrogen forms only $NCl_3$ but phosphorous forms $PCl_3$ and $PCl_5$ both. Explain.

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12. Q59 2018

    Write the chemical reaction of $NH_3$ gas with aqueous $CuSO_4$ and $AgNO_3$ solutions respectively.

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