17 JEE Main 2024 Some Basic Concepts of Chemistry previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2024 previous-year questions from the Some Basic Concepts of Chemistry chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Some Basic Concepts of Chemistry chapter hub.
The molarity of 1 L orthophosphoric acid H 3 PO 4 having 70 % purity by weight (specific gravity 1 .54 g cm − 3 ) is __…
1 mole of PbS is oxidised by X moles of O 3 to get Y moles of O 2 . X + Y =
10 mL of gaseous hydrocarbon on combustion gives 40 mL of CO 2 g and 50 mL of water vapour. Total number of carbon and…
Volume of 3 M NaOH (formula weight 40 g mol - 1 ) which can be prepared from 84 g of NaOH is ____ × 10 - 1 dm 3 .
Consider the following reaction: 3 PbCl 2 + 2 NH 4 3 PO 4 → Pb 3 PO 4 2 + 6 NH 4 Cl If 72 mmol PbCl 2 is mixed with 50…
9 . 3 g of aniline is subjected to reaction with excess of acetic anhydride to prepare acetanilide. The mass of acetani…
0 . 05 cm thick coating of silver is deposited on a plate of 0 . 05 m 2 area. The number of silver atoms deposited on p…
Molality ( m ) of 3 M aqueous solution of NaCl is : (Given : Density of solution =1.25 ~g ~mL⁻¹ , Molar mass in g mol⁻¹…
The number of moles of methane required to produce 11 ~g CO₂(~g) after complete combustion is : (Given molar mass of me…
9.3 ~g of pure aniline is treated with bromine water at room temperature to give a white precipitate of the product ' P…
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