Surface Chemistry

Bihar Board Class 12 · Chemistry · 30 past questions

1. Q1 2026 Set A

   The volumes of gases $H_2$, $CH_4$, $CO_2$ and $NH_3$ adsorbed by 1 g of charcoal at 288 K are in the order

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2. Q2 2026 Set A

   The correct expression for Langmuir's adsorption isotherm is

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3. Q3 2026 Set A

   The size of colloidal particle is

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4. Q4 2026 Set A

   Smoke is a colloidal state in which

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5. Q5 2026 Set A

   Butter is an example of

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6. Q6 2026 Set A

   Which one of the following substances acts as an emulsifier ?

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7. Q7 2026 Set A

   Which of the following is a biological catalyst ?

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8. Q8 2026 Set A

   Which of the following is a shape selective catalyst ?

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9. Q9 2025 Set D

   Which of the following adsorptions forms multimolecular layer ?

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10. Q10 2025 Set D

    Which of the following electrolytes is the least effective in causing coagulation of colloidal solution of…

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11. Q11 2025 Set D

    Which of the following is an emulsifier ?

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12. Q12 2025 Set D

    Which of the following catalysts is used in Haber's process for the manufacture of ammonia ?

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13. Q13 2024 Set D2022 Set E

    Which of the following is not a lyophilic colloid?

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14. Q14 2024 Set D

    According to Freundlich adsorption isotherm

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15. Q15 2024 Set D

    Milk is

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16. Q16 2024 Set D2023 Set F

    Which of the following catalysts is used in the manufacture of ammonia by Haber's process ?

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17. Q17 2023 Set F

    By which of the following processes colloidal sols are purified ?

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18. Q18 2023 Set F

    The highest volume of which of the following gases would be adsorbed by 1 g of charcoal at 298 K ?

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19. Q19 2022 Set E

    The size of the colloidal particles is in between which of the following?

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20. Q20 2022 Set E

    The rate of chemisorption

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21. Q21 2021 Set A

    Tyndall effect is observed in

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22. Q22 2021 Set A

    Photographic film plate has an essential ingredient of

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23. Q23 2021 Set A

    How many layers are involved in chemical adsorption ?

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24. Q24 2021 Set A

    Milk is an example of

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25. Q25 2021 Set A

    In physical adsorption the approximate heat energy evolved in kJ/mol is

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26. Q26 2018

    Which gas is absorbed strongly by charcoal?

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27. Q27 2018

    When NaCl solution is added to $Fe(OH)_3$ colloidal solution then-

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28. Q28 2018

    Describe thermodynamical change when a gas is adsorbed on a solid?

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29. Q29 2017

    Distinguish between Lyophilic and Lyophobic colloids.

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30. Q30 2016

    which one of the following is lyophilic colloid?

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