Under which law should industries likely to cause environmental... | Agrigyan

Note: This question was officially DROPPED by NTA because none of the four options correctly started with Glucose.
The true increasing molecular weight order is:

Since Glucose (C) has the lowest molecular weight, any valid sequence must begin with (C). Because none of the choices 1, 2, 3, or 4 included (C) as the first entry, NTA dropped this question and awarded full marks to all candidates.

Comparing the side chain ($-R$) structure of the given aliphatic amino acids:

• Glycine: $-R = -\text{H}$ (smallest, single hydrogen atom, volume $\approx 60\ \text{Å}^3$).
• Alanine: $-R = -\text{CH}_3$ (single methyl group, volume $\approx 88\ \text{Å}^3$).
• Leucine: $-R = -\text{CH}_2-\text{CH}(\text{CH}_3)_2$ (isobutyl group, branched at $\gamma$-carbon).
• Isoleucine: $-R = -\text{CH}(\text{CH}_3)-\text{CH}_2\text{CH}_3$ (sec-butyl group, branched at $\beta$-carbon imparting greater steric hindrance and cross-sectional volume near the peptide backbone).
  Increasing side chain size order: (B) Glycine < (A) Alanine < (D) Leucine < (C) Isoleucine.

Photochemical (Los Angeles) smog is formed on sunny days through complex photochemical reactions between nitrogen oxides ($ ext{NO}_x$) and volatile organic compounds (VOCs) driven by ultraviolet solar radiation. Its primary characterizing secondary pollutants are:
Ground-level Ozone ($ ext{O}_3$)
Peroxyacetyl nitrate (PAN, $ ext{CH}_3 ext{COOONO}_2$)
Nitrogen dioxide ($ ext{NO}_2$)
(Classical or London smog, by contrast, is a reducing smog composed of sulfur dioxide, soot, smoke, and cold winter fog).