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Friday, 9 October

JEE Main 2024 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 9 April 2024, Shift 2, Chemistry Q88

Question 88 of 90 in this shift, Chemistry question 28 of 30, Section B.

In the given TLC, the distance of spot A & B are 5 cm & 7 cm, from the bottom of TLC plate, respectively. RfR_f value of B is x×10−1x\times10^{-1} times more than A. The value of xx is ________.

The figure, in words

TLC plate drawing, total height 10 cm. Baseline region 1 cm at the bottom (line drawn 1 cm above the bottom), solvent front dashed line 1 cm below the top. Labels: Top, Solvent front, Bottom. Spot B drawn above spot A, both between baseline and solvent front.

Official answer

15

NTA final key.

Chapter
Organic Chemistry: Some Basic Principles and Techniques
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.