WBJEE 2023 Physics & Chemistry Solved Paper

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Question : 40 of 80

Marks: +1, -0

Which of the following mixtures act(s) as buffer solution?

NaOH+CH3‌COOH (1: 1 mole ratio)
NH4‌OH+HCl (2: 1 mole ratio)
CH3‌COOH+NaOH (2: 1 mole ratio)
CH3‌COOH+NaOH (1:2 mole ratio)

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