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Important Questions: Various concepts of acids and bases (Arrhenius, Bronsted Lowry and Lewis) and their ionization, acid-base equilibria (including multistage ionization) and ionization constants for JEE

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The most important Various concepts of acids and bases (Arrhenius, Bronsted Lowry and Lewis) and their ionization, acid-base equilibria (including multistage ionization) and ionization constants questions for JEE cover conceptual traps, standard results, and numerical patterns from Various concepts of acids and bases (Arrhenius, Bronsted Lowry and Lewis) and their ionization, acid-base equilibria (including multistage ionization) and ionization constants. Goodmarks provides 6+ high-yield MCQs with full solutions.

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Q1ChemistryUnit 6: Equilibrium
Which of the correct statement for the given acids?
Q2ChemistryUnit 6: Equilibrium
Ant bite is treated by application of
Q3ChemistryUnit 6: Equilibrium
Which property is shown by the alkali sodium hydroxide?
Q4ChemistryUnit 6: Equilibrium
The pair of compounds which cannot exist together in aqueous solution is:
Q5ChemistryUnit 6: Equilibrium
Which compound is used as an antacid?
Q6ChemistryUnit 6: Equilibrium
Assertion When 0.1 M0.1 ~ M weak diprotic acid H2AH_{2} A dissociates with its dissociation constants Ka1=10−3\boldsymbol{K}_{\boldsymbol{a}_{1}}=\mathbf{1 0}^{-\mathbf{3}} and Ka2=10−8\boldsymbol{K}_{\boldsymbol{a}_{2}}=\mathbf{1 0}^{-\mathbf{8}} then [A2−]\left[A^{2-}\right] is almost equal to 10−3M10^{-3} M Reason since⁡Ka2≪Ka1\operatorname{since} K_{a_{2}} \ll K_{a_{1}} for 0.1MH2A,0.1 M H_{2} A, so [A2−]\left[\boldsymbol{A}^{2-}\right] is negligible w.r.t.[HA−]\mathbf{w} . \mathbf{r . t .}\left[\boldsymbol{H} \boldsymbol{A}^{-}\right]

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Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

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