Class 11 · Chemistry
Redox Reactions
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ChemistryPlate 83
NeetVellum atlas · fig. chemistry
83
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Three examples from the live 150-question bank. Answers appear after attempting them in practice mode.
Example 1 · difficulty 1/5
CrO₅ has a structure in which four of its five oxygen atoms form two peroxo (O–O) linkages with chromium. The oxidation number of chromium in CrO₅ is:
- A. +10
- B. +6
- C. +4
- D. +2
Example 2 · difficulty 1/5
Which of the following everyday processes is NOT a redox reaction?
- A. Rusting of an iron nail left in moist air
- B. Respiration involving breakdown of glucose in living cells
- C. Neutralisation of HCl solution with NaOH solution
- D. Electrolysis of acidified water producing H₂ and O₂
Example 3 · difficulty 2/5
Identify the disproportionation reaction among the following:
- A. P₄ + 3OH⁻ + 3H₂O → PH₃ + 3H₂PO₂⁻
- B. 2Na(s) + Cl₂(g) → 2NaCl(s)
- C. 2KClO₃(s) → 2KCl(s) + 3O₂(g)
- D. AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq)
The chapter mastery loop
- 1. Attempt firstExpose recall gaps before rereading.
- 2. Classify the missConcept, careless, rushed or guessed.
- 3. Re-practiceReturn until the error pattern disappears.
Frequently asked questions
How many Redox Reactions NEET questions are available?
NeetVellum publishes 150 verified questions for this chapter. Free accounts use the daily UG quota; UG Pro removes it.
How should I revise Redox Reactions for NEET?
Attempt questions before rereading, classify each miss, revisit the exposed NCERT concept, then re-practice until the error pattern disappears.