Practice question

Fill in the blank

Question

A dye was allowed to undergo migration on a chromatographic paper using a solvent. The dye, and the solvent-front migrated 5 and 20 𝑐𝑚, respectively, from the point of origin. The retention factor (rounded off to two places of decimals) for the dye is _____. (NAT)

Explanation

Biologically, verbal and logical reasoning operates via grammar, vocabulary and inference determine correct usage. Thus Option NAT is appropriate since it meets linguistic and logical standards, reinforcing core concepts taught in general aptitude.

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