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Friday, 9 October

NEET UG 2019 · Chemistry · Question 77

NEET 2019 Chemistry, question 77

Question 77 of the NEET 2019 paper (code P1) is a Chemistry question from Equilibrium. Its idea, Identifying Buffer Solutions, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.

Updated 2026-10-08

Q77 · Chemistry

Which will make basic buffer ?

  1. 150 mL of 0.1 M NaOH + 25 mL of 0.1 M CH3COOHCH_3COOH
  2. 2100 mL of 0.1 M CH3COOHCH_3COOH + 100 mL of 0.1 M NaOH
  3. 3100 mL of 0.1 M HCl + 200 mL of 0.1 M NH4OHNH_4OHOfficial answer
  4. 4100 mL of 0.1 M HCl + 100 mL of 0.1 M NaOH

Official answer: option 3 · NTA final answer key

Same idea

The only question on Identifying Buffer Solutions

No other NEET paper from 2017–2026 tested this exact idea.

Identifying Buffer Solutions: every question and how it was framed

The chapter

Equilibrium in ten years of NEET

26 questions from 2017–2026, asked in 10 of 10 papers, about 2.5 a paper. pH and Buffer Solutions alone had 13.

Equilibrium: questions per paper

0363’173’183’192’201’212’222’235’244’251’26