NEET UG 2020 · Chemistry · Question 131
NEET 2020 Chemistry, question 131
Question 131 of the NEET 2020 paper (code E1) is a Chemistry question from Classification of Elements and Periodicity in Properties. Its idea, Acidic, Basic, and Amphoteric Nature of Oxides, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 2.
Updated 2026-10-08
Q131 · Chemistry
Match the following :
| Oxide | Nature |
| (a) CO | (i) Basic |
| (b) BaO | (ii) Neutral |
| (c) | (iii) Acidic |
| (d) | (iv) Amphoteric |
Which of the following is correct option ?
- 1(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
- 2(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)Official answer
- 3(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
- 4(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
Official answer: option 2 · NTA final answer key
Same idea
The only question on Acidic, Basic, and Amphoteric Nature of Oxides
No other NEET paper from 2017–2026 tested this exact idea.
Acidic, Basic, and Amphoteric Nature of Oxides: every question and how it was framed
The chapter
Classification of Elements and Periodicity in Properties in ten years of NEET
13 questions from 2017–2026, asked in 9 of 10 papers, about 1.3 a paper. Periodic Properties alone had 13.