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 5× in all

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