Valency & Oxidation States: JEE Questions & Solutions
9 previous-year JEE Chemistry questions on Valency & Oxidation States, each with a worked step-by-step solution.
Previous-year questions
- 01
A p-block element E and hydrogen form a binary cation (EHx)^+, while EH3 on treatment with K2HgI4 in alkaline medium gives a precipitate of…
MCQMediumJEE 2026 - 02
X'' is an oxoanion of the lightest element of group 17 (in the periodic table). The metal is in +6 oxidation state in X''. The color of the…
MCQEasyJEE 2026 - 03
Consider the elements N, P, O, S, Cl and F. The number of valence electrons present in the elements with most and least metallic character…
MCQEasyJEE 2026 - 04
The large difference between the melting and boiling points of oxygen and sulphur may be explained on the basis of
MCQEasyJEE 2025 - 05
Given below are two statements: Statement I: H2Se is more acidic than H2Te Statement II: H2Se has higher bond enthalpy for dissociation…
MCQEasyJEE 2025 - 06
Element not showing variable oxidation state is:
MCQEasyJEE 2024 - 07
Given below are two statements: Statement I: Along the period, the chemical reactivity of the element gradually increases from group 1 to…
MCQEasyJEE 2024 - 08
The correct order of metallic character is:
MCQEasyJEE 2023 - 09
The covalency and oxidation state respectively of boron in [BF3] are:
MCQEasyJEE 2023
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