NEET

Redox Reactions

Chemistry

Previous Years Questions

MCQ (Single Correct Answer)

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What is the change in oxidation number of carbon in the following reaction?CH4(g) + 4Cl2(g) $$ \to $$ CCl4(l) + 4HCl(g)...
NEET 2020 Phase 1
Which of the following reactions are disproportionation reaction? (a) 2Cu+ $$ \to $$ Cu2+ + Cu0 (b) 3MnO42+ + 4H+ $$ \t...
NEET 2019
The correct order of N-compounds in its decreasing order of oxidation states is
NEET 2018
Consider the change in oxidation state of bromine corresponding to different emf values as shown in the given diagram : ...
NEET 2018
For the redox reaction, MnO4– + C2O4 2– + H+ $$ \to $$ Mn2+ + CO2 + H2O The correct coefficients of the reactants for ...
NEET 2018
Hot concentrated sulphate acid is a moderately strong oxidizing agent. Which of the following reactions does not show ox...
NEET 2016 Phase 2
In acidic medium, H2O2 changes Cr2O72- to CrO5 which has two ($$-$$O$$-$$O$$-$$) bonds. Oxidation state of Cr in CrO5 is...
AIPMT 2014
(I)   H2O2 + O3 $$ \to $$ H2O + 2O2 (II)   H2O2 + Ag2O $$ \to $$ 2Ag + H2O + O2 Role of Hy...
AIPMT 2014
The pair of compounds that can exist together is
AIPMT 2014
A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes m...
AIPMT 2012 Prelims
When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from...
AIPMT 2012 Prelims
Oxidation numbers of P in PO$$_4^{3 - }$$, of S in SO$$_4^{2 - }$$ and that of Cr in Cr2O$$_7^{2 - }$$ are respectively...
AIPMT 2009
Number of moles of MnO$$_4^{ - }$$ required to oxidize one mole of ferrous oxalate completely in acidic medium will be
AIPMT 2008
Which is the best description of the behaviour of bromine in the reaction given below? H2O + Br2 $$ \to $$ HOBr + HBr...
AIPMT 2004
The oxidation states of sulphur in the anions SO3$${_3^{2 - }}$$, S2O$${_4^{2 - }}$$ and S2O$${_6^{2 - }}$$ follow t...
AIPMT 2003

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