Acids, Bases and Salts

Bihar Board Class 10 · Science · 39 past questions

1. Q1 2026

   Which of the following is a strong acid ?

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2. Q2 2026

   A solution turns blue litmus paper, red. Its pH will be probably

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3. Q3 2026

   Which of the following is a natural source of oxalic acid ?

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4. Q4 2025

   An aqueous solution of acid conducts electricity, because acid in water

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5. Q5 2025

   Which of the following is not an olfactory indicator ?

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6. Q6 2025

   Which acid is found in ant sting ?

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7. Q7 2025

   In which of the following is tartaric acid found ?

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8. Q8 2025

   What is the chemical name of slaked lime ?

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9. Q9 2024

   Which of the following acids is found in vinegar?

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10. Q10 2024

    Within which pH range does our body work ?

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11. Q11 2024

    What is the chemical name of Plaster of Paris?

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12. Q12 2024

    The chemical substance used as a cast for setting broken bones in surgery is

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13. Q13 2024

    An aqueous solution of ammonium chloride is

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14. Q14 2023

    Which one of the following is a strong base?

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15. Q15 2023

    The pH value of any neutral solution is

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16. Q16 2023

    Which of the following is a natural indicator?

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17. Q17 2023

    What is the chemical formula of washing soda?

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18. Q18 2023

    Which of the following is a heterogeneous compound?

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19. Q19 2023

    Which of the following ions can turn red litmus paper blue ?

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20. Q20 2023

    What is the common name of CaOCl$_2$?

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21. Q21 2023

    A solution turns red litmus into blue. The pH value of this solution would be

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22. Q22 2022

    Water soluble bases are called

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23. Q23 2022

    The chemical formula of soda ash is

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24. Q24 2022

    The chemical formula of baking soda is

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25. Q25 2022

    Which of the following is a corrosive acid?

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26. Q26 2022

    The pH value of milk of magnesia is

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27. Q27 2022

    Which value of pH represents alkaline solution ?

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28. Q28 2022

    What would be the pH value of the solution of an acidic oxide ?

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29. Q29 2020

    Tooth paste is

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30. Q30 2020

    Which of the following causes acid rain ?

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31. Q31 2020

    Which of the following is a salt ?

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32. Q32 2018

    Which one of the following is slaked lime?

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33. Q33 2018

    A solution turns blue litmus paper red; its pH is likely to be. -

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34. Q34 2018

    Which one of the following is the natural source of Oxalic acid?

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35. Q35 2018

    In what ratio, the concentrated Hydrochloric acid and the concentrated Nitric acid solutions are present in…

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36. Q36 2018

    A student adds a few drops of universal indicator to a dilute solution of sodium bicarbonate taken in a test…

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37. Q37 2017

    The pH of an acid solution is-

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38. Q38 2017

    Which of the following is strong acid?

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39. Q39 2016

    'NaOH' is

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