MHT CET · Chemistry · Environmental Chemistry

Which from following statements is NOT true according to principles of green chemistry?

A It is good to use the technique of protection and deprotection of functional group in organic synthesis.
B Use of chemicals derived from plant resource is better than crude oil.
C Use of biodegradable pesticides is advantageous.
D Use of critical \(\mathrm{CO}_2\) as solvent is better than organic solvents.

Verified Solution

Answer & Solution

Correct Answer

(A) It is good to use the technique of protection and deprotection of functional group in organic synthesis.

Step-by-step Solution

Detailed explanation

Unnecessary derivatisation i.e. addition or removal of protecting groups must be avoided if possible or minimised, as such steps require
additional reagents and generate additional waste. The green chemistry principle aims to develop the methodology, where unnecessary steps should be avoided.

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.

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Match the ecological hierarchy given in Column-I with their explanation in Column-II. Choose the correct answer from options given below.

	Column-I		Column - II
a.	Organism	i.	Flora and fauna of a specific climatic zone.
b.	Population	ii.	Populations of different species of an area.
c.	Community	iii.	Organisms of same kind inhabiting an area.
d.	Biome	iv.	Basic unit of hierarchy.

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