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Select the incorrect statement from the following options. (a)The spots of colorless compounds are invisible to the eyes

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Select the incorrect statement from the following options.

(a) The spots of colorless compounds are invisible to the eyes

(b) These spots can be detected by putting the plate under ultraviolet light

(c) These spots can be detected by placing the plate in a covered jar containing iodine crystals

(d) None of the mentioned

This question was addressed to me during an interview.

My question is taken from Thin Layer Chromatography in chapter Methods of Purification of Engineering Chemistry I

1 Answer

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Right choice is (d) None of the mentioned

The best explanation: All the mentioned options are correct. The spots of colorless compounds are invisible to the eyes, can be detected by putting the plate under ultraviolet light and can be detected by placing the plate in a covered jar containing iodine crystals.

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