JEE Main 2020 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 2 September 2020, Shift 1, Chemistry Q34

Question 34 of 75 in this shift, Chemistry question 9 of 25.

The metal mainly used in devising photoelectric cells is :

(1)Li
(2)Na
(3)Rb
(4)CsOfficial answer

Official answer

Option 4

NTA final key (Sep 2020).

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

Same topic in other shifts

All s-Block Elements questions

6 Apr 2024, Shift 2 · Q66Match List - I with List - II. List - I (Alkali Metal) (A) Li (B) Na (C) Rb (D) Cs List - II (Emission Wavelength in nm) (I) 589.2 (II)…HardMatch the list
30 Jan 2024, Shift 2 · Q90Number of metal ions characterized by flame test among the following is ________.…MediumNumerical value
31 Jan 2024, Shift 2 · Q63Which of the following is least ionic?MediumSingle correct
6 Apr 2023, Shift 1 · Q67The standard electrode potential of $\mathrm{M^+/M}$ in aqueous solution does not depend onMediumSingle correct
6 Apr 2023, Shift 1 · Q68The setting time of Cement is increased by addingEasySingle correct
8 Apr 2023, Shift 2 · Q67Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R Assertion A : Sodium is about 30…MediumAssertion–reason

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 42 of the 174 JEE Main shifts held from 2017 to 2026.