Acids, Bases and Salts

CBSE Class 10 · Science · 29 past questions

11 of 29 · show all

1. Q1 2026

   Which one of the following can be used as an acid-base indicator by a visually impaired (blind) student ?

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2. Q2 2026

   The natural sources of oxalic acid, lactic acid and methanoic acid respectively are…

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3. Q3 2026

   To a small amount of copper oxide in a beaker, when we add dilute hydrochloric acid slowly with stirring, the…

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4. Q4 2026

   In which case/cases will the bulb glow considering that all other connections of electric circuit are… (with a figure)

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5. Q5 2026

   When zinc reacts with NaOH, the product formed is…

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6. Q6 2026

   A metal carbonate reacts with a solution X which forms a salt, water and a gas Y. What are X and Y ?

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7. Q7 2026

   The pH of the gastric juices released during digestion is…

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8. Q8 2026

   Baking powder is a mixture of…

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9. Q9 Sample paper 2026-27

   Rishita summarizes the chlor-alkali process in the following table.…

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10. Q10 Sample paper 2026-27

    The following question consists of two statements – Assertion (A) and Reason (R). Answer this question by…

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11. Q11 Sample paper 2026-27

    Give reason for the following…

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