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JEE · NEET Previous Year Question

$On adding which of the following, the pH of 20 mL of 0.1 NHCl will not alter?$

Topic: JEE PYQ

Answer: D. Full step-by-step solution below.

A $1 mL of 1 NHCl$
B $20 mL of distilled water$
C $1 mL of 0.1 NNaOH$
D $500 mL of HCl of pH = 1$

Correct answer: D

Solution

(d) : 0.1 NHCl has pH = 1 and adding another 500 mL of HCl of same pH will not alter the pH .

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