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ChemistryJEE Main 21 Jan 2026, Shift 1·Q7·MCQ·Easy–moderate

Some Basic Concepts · Stoichiometry and limiting reagent

14.0 g of calcium metal is allowed to react with excess HCl at 1.0 atm pressure and 273 K.

Which of the following statements is incorrect ?

[Given : Molar mass in g mol−1^{-1} of Ca–40, Cl–35.5, H–1]

  1. (1)0.35 mol of HX2\ce{H2} gas is evolved.
  2. (2)7.84 L of HX2\ce{H2} gas is evolved.
  3. (3)33.3 g of CaClX2\ce{CaCl2} is produced.
  4. (4)The limiting reagent is calcium metal.
We corrected a printing error in the original paper

Source printed “33.3 of CaClX2\ce{CaCl2} is produced” (unit missing).

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