List of top Chemistry Questions on Oxidation And Reduction Reactions

Which of the following complexes will show coordination isomerism?} (A) \( [\text{Ag}(\text{NH}_3)_2][\text{Ag}(\text{CN})_2] \)
(B) \( [\text{Co}(\text{NH}_3)_6][\text{Cr}(\text{CN})_6] \)
(C) \( [\text{Co}(\text{NH}_3)_6][\text{Co}(\text{CN})_6] \)
(D) \( [\text{Fe}(\text{NH}_3)_6][\text{Co}(\text{CN})_6] \)
(E) \( [\text{Co}(\text{NH}_3)_6][\text{Fe}(\text{CN})_6] \) Choose the correct answer from the options given below:
Given below are two statements: Statement I: Among Zn, Mn, Sc and Cu, the energy required to remove the third valence electron is highest for Zn and lowest for Sc.
Statement II: The correct order of the following complexes in terms of CFSE is [Co(H₂O)₆]²⁺<[Co(H₂O)₆]³⁺<[Co(en)₃]³⁺.
In light of the above statements, choose the correct answer from the options given below:
Which of the following sets includes all the species that will change the orange colour of \(K_2Cr_2O_7\) in acidic medium?
Given below are two statements: Statement (I): Oxidising power of halogens decreases in the order \[ F_2>Cl_2>Br_2>I_2 \] which is the basis of the “Layer test”. Statement (II): “Layer test” to identify \(Br_2\) and \(I_2\) in aqueous solution involves the oxidation of bromide or iodide into \(Br_2\) or \(I_2\) respectively with \(Cl_2\), which is a type of displacement redox reaction. In the light of the above statements, choose the correct answer:
What is the number of electrons gained by Cl atom when \(n\) mole of \(\text{ClO}_4^-\) is transformed into \(n\) mole of \(\text{ClO}_2^-\) ion?
Which of the following reactions is NOT an example of redox reaction?
What is the oxidation state of chromium in the final product when KI reacts with acidified potassium dichromate solution?
Which of the following is NOT a redox reaction?
नीचे दो कथन दिए गए हैं : कथन-I : NaCl को सांद्र \(H_2SO_4\) और \(MnO_2\) के साथ गर्म करने से \(Mn\) का ऑक्सीकरण होता है।
कथन-II : NaI को सांद्र \(H_2SO_4\) और \(MnO_2\) के साथ गर्म करने से \(Mn\) का अपचयन होता है।
उपयुक्त विकल्प चुनिए :
Acidified potassium dichromate cannot oxidize ________.
Identify the name of method used for three dimensional representation of molecule as follows.
Which of the following statement is INCORRECT for the concept of oxidation?
Identify the name of method used for three dimensional representation of molecule as follows.
Identify the type of reaction:

An example of disproportionation reaction is :
The reagent(s) used in hydroboration oxidation of propene are:
(A) B\(_2\)H\(_6\)
(B) H\(_2\)O
(C) H\(_2\)O\(_2\)
(D) OH\(^-\)
Acidified potassium dichromate oxidizes sulphides (S\(^{2-}\)) to .......
Why is HCl not used to make the medium acidic in oxidation reactions of KMnO\(_4\) in acidic medium?

Write the reactions involved when D-glucose is treated with the following reagents: (a) HCN (b) Br\(_2\) water 

Consider the following compounds: K$_2$O$_2$, H$_2$O$_2$, and H$_2$SO$_4$
The oxidation states of the underlined elements in them are, respectively:

Write the structures of A, B, and C in the following sequence of reactions:

(A) Explain the following reactions and write chemical equations involved:
(a) Wolff-Kishner reduction
(b) Etard reaction
(c) Cannizzaro reaction

A solution containing 15 g urea (molar mass = 60 g mol\(^{-1}\)) per litre of solution in water has the same osmotic pressure (isotonic) as a solution of glucose (molar mass = 180 g mol\(^{-1}\)) in water. Calculate the mass of glucose present in one litre of its solution.
What is the oxidation state of chromium in K₂Cr₂O₇?
Which of the following changes exhibit that nitrogen undergoes oxidation?