સૂચિ-I ને સૂચિ-II સાથે જોડો.

સૂચિ-I પદાર્થનું દળ	સૂચિ-II પરમાણુઓની સંખ્યા
A. \(1.8\) mg પાણી	I. \(2\times 10^{-4}\times N_A\)
B. \(9.8\) mg સલ્ફ્યુરિક એસિડ	II. \(1.5\times 10^{-4}\times N_A\)
C. \(1.8\) mg કાર્બન	III. \(3\times 10^{-4}\times N_A\)
D. \(5.85\) mg ક્ષાર (NaCl)	IV. \(7\times 10^{-4}\times N_A\)

નીચે આપેલા વિકલ્પોમાંથી સાચો જવાબ પસંદ કરો:

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.