Practice question

Fill in the blank

Question

A solution of a compound shows an absorbance of 0.42 at 275 nm in a cuvette with 0.1 dm light path. The molar absorptivity of the compound is ε₂₇₅ = 8.4 × 10³ M⁻¹ cm⁻¹. The concentration of the compound is x10 ⁻⁵ M (rounded off to the closest integer). (NAT)

Explanation

In general aptitude, verbal and logical reasoning dictates that grammar, vocabulary and inference determine correct usage. Therefore Option NAT is correct as it meets linguistic and logical standards, supported by mechanistic studies and conserved across related systems.

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