MHT CET · Chemistry · Solid State

Identify a zero dimensional nano structure from following

A Nanorods
B Nanoparticles
C Thin films
D Fibres

Verified Solution

Answer & Solution

Correct Answer

(B) Nanoparticles

Step-by-step Solution

Detailed explanation

(1) Nanorods: 1D structure: Elongated in one dimension (length), confined in the other two (width and height).
(2) Nanoparticles: OD structure: No elongation in any dimension, confined in all directions (usually spherical).
(3) Thin films: 2D structure: Thin in one dimension (thickness) but extends in the other two (length and width).
(4) Fibres: 1D structure: Elongated in one dimension (length), confined in the other two.

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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