jee_main_2025_28_jan_morning - Some Basic Concepts of Chemistry Topics

Master these core formulas and structures to solve almost any past paper question.

Sample Questions in this Chapter

QUESTION #47 Empirical Formula Calculation
Quantitative analysis of an organic compound (X) shows following % composition. mathrmC:14.5\% quad mathrmCl:64.46\% quad mathrmH:1.8\% The empirical formula mass of the compound (X) is mathrmx times 10^-1. The value of mathrmx is: (Given molar mass in mathrmg\,mol^-1 of C: 12, H: 1, O: 16, Cl: 35.5)
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QUESTION #48 Molarity of Solutions
The molarity of a 70\% (mass/mass) aqueous solution of a monobasic acid (X) is \_\_\_\_\_mathrmM (Nearest integer) [Given : Density of aqueous solution of (X) is 1.25mathrmg\,mathrmmL^-1 Molar mass of the acid is 70mathrmg\,mol^-1]
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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)
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