Q111 · UPPSC Prelims 2020 · Set A · General Studies

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Match List-I with List-II and select the correct answer using the codes given below the lists.List IList IIA. Blue Vitriol1. Artificial rainB. Eosin2. FungicideC. Silver iodide3. Red inkD. Zinc phosphide4. RodenticideMatch List-I with List-II and select the correct answer using the codes given below the lists.Code: A B C D

A 2 3 4 1
B 2 1 3 4
C 2 3 1 4
D 2 4 1 3

Correct answer: (c) 2 3 1 4

Explanation

  1. A

    2 3 4 1

    2 3 4 1 would make silver iodide a rodenticide and zinc phosphide a rain-seeding agent. AgI is the cloud-seeding salt; Zn3P2 is the rodent poison.

  2. B

    2 1 3 4

    2 1 3 4 gives eosin the artificial-rain role. Eosin is a red fluorescent dye used in red ink, not in cloud seeding.

  3. C

    2 3 1 4

    2 3 1 4 is the match: blue vitriol (copper sulphate) as fungicide, eosin as red ink, silver iodide for artificial rain, zinc phosphide as rodenticide. That is the official key.

  4. D

    2 4 1 3

    2 4 1 3 makes eosin a rodenticide and zinc phosphide red ink, which reverses those two uses.

Summary. Official key is (c) 2 3 1 4. CuSO4 is a classic Bordeaux-mixture fungicide; eosin dyes red ink; AgI nuclei seed supercooled clouds; zinc phosphide is a widely used rodent bait. Honour the stored letter (c).