Learn

Saturday, 31 October

JEE Main 2023 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 13 April 2023, Shift 1, Chemistry Q86

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

A metal surface of 100 cm2\mathrm{cm^2} area has to be coated with nickel layer of thickness 0.001 mm. A current of 2A was passed through a solution of Ni(NO3)2\mathrm{Ni(NO_3)_2} for 'x' seconds to coat the desired layer. The value of x is __________. (Nearest integer) (ρNi\rho_{\mathrm{Ni}} (density of Nickel) is 10 g mL−1\mathrm{mL^{-1}}, Molar mass of Nickel is 60 g mol−1\mathrm{mol^{-1}} F=96500 C mol−1\mathrm{mol^{-1}} )

Official answer

161

NTA final key.

Chapter
Electrochemistry
Topic
Faraday's Laws of Electrolysis
Idea tested
Electroplating Thickness and Area

Same topic in other shifts

All Faraday's Laws of Electrolysis questions
  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
  4. 27 Jan 2024, Shift 1 · Q86The mass of silver (Molar mass of Ag : 108 g mol−1108\ \mathrm{g\ mol^{-1}}) displaced by a quantity of electricity which displaces 5600 mL of…EasyNumerical value
  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. 30 Jan 2024, Shift 1 · Q860.05 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 ________…MediumNumerical 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.