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Saturday, 31 October

JEE Main 2024 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 30 January 2024, Shift 1, Chemistry Q86

Question 86 of 90 in this shift, Chemistry question 26 of 30, Section B.

0.05 cm thick coating of silver is deposited on a plate of 0.05 m2^2 area. The number of silver atoms deposited on plate are ________ ×1023\times 10^{23}. (At mass Ag = 108, d = 7.9 g cm−3^{-3})

Official answer

11

NTA final key.

  1. 7 Apr 2025, Shift 2 · Q56Given below are two statements : 1 M aqueous solutions of each of Cu(NO3)2\mathrm{Cu(NO_3)_2}, AgNO3\mathrm{AgNO_3}, Hg2(NO3)2\mathrm{Hg_2(NO_3)_2},…MediumTwo statements
  2. 5 Apr 2024, Shift 2 · Q65The quantity of silver deposited when one coulomb charge is passed through AgNO3\mathrm{AgNO_3} solution :EasySingle correct
  3. 1 Feb 2024, Shift 2 · Q84The amount of electricity in Coulomb required for the oxidation of 1 mol of H2O\mathrm{H_2O} to O2\mathrm{O_2} is ________ ×105\times 10^5 C.EasyNumerical value
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  5. 29 Jan 2024, Shift 1 · Q86The mass of zinc produced by the electrolysis of zinc sulphate solution with a steady current of 0.015 A for 15 minutes is ________…EasyNumerical value
  6. 31 Jan 2024, Shift 1 · Q85One Faraday of electricity liberates x×10−1x\times10^{-1} gram atom of copper from copper sulphate. xx is _________.EasyNumerical value

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.