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CBSE Class 10 Social Science - Most Important MCQs - Live Discussion | Part - 1 | CBSE Board 2020

(a). What effect does the concentration of H^(+) (aq) ions have on the nature of a solution? (b). What effect does the concentration of OH^(-) ions have on the nature of a solution? (c). Someone put some universal indicator paper into vinegar. The pH is 3. What does this tell you about the vinegar? (d). Someone put some universal indicator paper onto wet soap. the pH is 8. What does this tell you about the soap? (e). State whether a solution is acidic, alkali or neutral if its pH is: (i) 9 (ii) 4 (iii) 7 (iv) 1 (v) 10 (vi) 3.

A sweet smelling liquid A has molecular formula C_5 H_(10) O_2 A does not change colour of moistened litmus paper but on acid hyrolysis produces two fragments B and C. B gives effervescence with aqueous NaHCO_3 but 'C' does not 'C' on treatment with PCl_5 gives an alkyl chloride 'D' 'D' on dissolving in Etheral solution of Mg and passing CO_2 through this solution and finally acidifying product with HCl gave B. Identify A to D.