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Saturday, 31 October

JEE Main 2021 · ChemistryNumerical answerNumerical valueEasyRecall

JEE Main 25 February 2021, Shift 2, Chemistry Q58

Question 58 of 90 in this shift, Chemistry question 28 of 30, Section B.

Among the following, number of metal/s which can be used as electrodes in the photoelectric cell is ________. (Integer answer) (A) Li (B) Na (C) Rb (D) Cs

Official answer

1

NTA final key.

Chapter
The s-Block Elements
Topic
s-Block Elements
Idea tested
Photoelectric Application of K and Cs

Same idea in other shifts

Asked 2× in all
  1. 2 Sep 2020, Shift 1 · Q34The metal mainly used in devising photoelectric cells is :EasySingle correct

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. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.