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10th Standard English Medium Science Subject Types of Chemical Reactions Book Back 7 Mark Questions with Solution Part - I updated Book back Questions

10th Standard English Medium Science Subject Types of Chemical Reactions Book Back 7 Mark Questions with Solution Part - I

10th Standard

    Reg.No. :
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Science

Time : 00:30:00 Hrs
Total Marks : 35

  1. A solid compound ‘A’ decomposes on heating into ‘B’ and a gas ‘C’. On passing the gas ‘C’ through water, it becomes acidic. Identify A, B and C.

  2. What would be the pH of an aqueous solution of sulphuric acid which is 5 × 10–5 mol litre–1 in concentration.

  3. Calculate the pH of a solution in which the concentration of the hydrogen ions is 1.0 × 10–8 mol litre–1

  4. Lemon juice has a pH 2, what is the concentration of H+ ions?

  5. What is the pH of 1.0 × 10–5 molar solution of KOH?

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