CUET · CHEMISTRY · PYQ PAPER 2023

An excess consumption of which of these compounds causes blindness and death?

A Methanol
B Ethanol
C Methanal
D Methanoic acid

Verified Solution

Answer & Solution

Correct Answer

(A) Methanol

Step-by-step Solution

Detailed explanation

Methanol

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Match List - I with List - II

List - I (Cell Type)	List - II (Characteristic/Reaction)
A. Fuel Cell	I. Rechargeable
B. Mercury Cell	II. Reaction at anode, \(\text{Zn} \rightarrow \text{Zn}^{2+} + 2\text{e}^{-}\)
C. Leclanche Cell	III. Cell reaction \(2\text{H}_2 + \text{O}_2 \rightarrow 2\text{H}_2\text{O}\)
D. Ni-Cd Cell	IV. Gives steady potential

Choose the correct answer from the options given below :

CUET 2023 Medium

The rate constants of a reaction at 200 K and 300 K are \(0.02 s^{-1}\) and \(0.04 s^{-1}\). The activation energy ( \(E _{ a }\) ) for this reaction will be :

CUET 2023 Hard

Match List-I and List-II

List-I	List-II
A. \([\text{Co(NH}_3\text{)}_6\text{]}^{3+}\)	I. \(\text{sp}^3\)
B. \([\text{CoF}_6\text{]}^{3-}\)	II. \(\text{dsp}^2\)
C. \([\text{NiCl}_4\text{]}^{2-}\)	III. \(\text{d}^2\text{sp}^3\)
D. \([\text{Ni(CN)}_4\text{]}^{2-}\)	IV. \(\text{sp}^3\text{d}^2\)

Choose the correct answer from the options given below:"

CUET 2023 Easy

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