Chemistry · 2025
JEE Main · 3 April 2025, Shift 2 · Q51
Mass of magnesium required to produce 220 mL of hydrogen gas at STP on reaction with excess of dil. HCl is Given: Molar mass of Mg is 24 g mol^-1.
Mass of magnesium required to produce $\displaystyle 220$ mL of hydrogen gas at STP on reaction with excess of dil. HCl isGiven: Molar mass of Mg is $\displaystyle 24 \mathrm{~g} \mathrm{~mol}^{-1}$.
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle 236$ mg
More from Some Basic Concepts of Chemistry
- 2.8 × 10^-3 mol of CO_2 is left after removing 10^21 molecules from its ' x ' mg sample. The mass of CO_2 taken initially is Given: N_A=6.02 × 10^23…2025
- For the given reaction; CaCO_3+2 HCl → CaCl_2+H_2 O+CO_2 If 90 g CaCO_3 is added to 300 mL of HCl which contains 38.55 % HCl by mass and has density…2026
- 10 mL of 2 M NaOH solution is added to 20 mL of 1 M HCl solution kept in a beaker. Now, 10 mL of this mixture is poured into a volumetric flask of…2025
- x mg of pure HCl was used to make an aqueous solution. 25.0 mL of 0.1 M Ba(OH)_2 solution is used when the HCl solution was titrated against it. The…2026
- Fortification of food with iron is done using FeSO_4.7 H_2 O. The mass in grams of the FeSO_4. 7 H_2 O required to achieve 12 ppm of iron in 150 kg…2025
- Thyroxine, the hormone has given below structure The percentage of iodine in thyroxine is ____ \%. (nearest integer) (Given molar mass in g mol^-1 C:…2025
- Quantitative analysis of an organic compound (X) shows following \% composition. C: 14.5 \% Cl: 64.46\% H: 1.8 \% (Empirical formula mass of the…2025
- When 81.0 g of aluminium is allowed to react with 128.0 g of oxygen gas, the mass of aluminium oxide produced in grams is ____. (Nearest integer)…2025
JEE Main 2025 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.