JEE Main 2025 · ChemistryMultiple choiceSingle correctMediumCalculation

JEE Main 2 April 2025, Shift 1, Chemistry Q51

Question 51 of 75 in this shift, Chemistry question 1 of 25, Section A.

\mathrm{CaCO_3(s)+2HCl(aq)\rightarrow CaCl_2(aq)+CO_2(g)+H_2O(l)}

Consider the above reaction, what mass of

\mathrm{CaCl_2}

will be formed if 250 mL of 0.76 M HCl reacts with 1000 g of

\mathrm{CaCO_3}

? (Given : Molar mass of Ca, C, O, H and Cl are 40, 12, 16, 1 and 35.5 g mol

^{-1}

, respectively)

(1)5.272 g
(2)2.636 g
(3)3.908 g
(4)10.545 gOfficial answer

Official answer

Option 4

NTA final key.

Chapter: Some Basic Concepts of Chemistry
Topic: Stoichiometry
Idea tested: Limiting Reagent Identification

Same idea in other shifts

Asked 8× in all

5 Apr 2026, Shift 2 · Q51What volume of hydrogen gas at STP would be liberated by action of 50 mL of $\mathrm{H_2SO_4}$ of 50% purity (density = 1.3 g mL $^{-1}$ )…MediumSingle correct
7 Apr 2025, Shift 2 · Q71Butane reacts with oxygen to produce carbon dioxide and water following the equation given below.…EasyNumerical value
29 Jul 2022, Shift 1 · Q62 $\mathrm{N_{2(g)}+3H_{2(g)} \rightleftharpoons 2NH_{3(g)}}$ 20 g 5 g Consider the above reaction, the limiting reagent of the reaction and…EasySingle correct
29 Jun 2022, Shift 1 · Q61Production of iron in blast furnace follows the following equation $\mathrm{Fe_3O_4(s) + 4CO(g) \rightarrow 3Fe(l) + 4CO_2(g)}$ when 4.640…EasySingle correct
30 Jun 2022, Shift 1 · Q81Blister copper is produced by reaction of copper oxide with copper sulphide.…MediumNumerical value
27 Aug 2021, Shift 2 · Q51100 g of propane is completely reacted with 1000 g of oxygen. The mole fraction of carbon dioxide in the resulting mixture is…MediumNumerical value
16 Mar 2021, Shift 2 · Q51When 35 mL of 0.15 M lead nitrate solution is mixed with 20 mL of 0.12 M chromic sulphate solution, ________ $\times10^{-5}$ moles of lead…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.