List of top Chemistry Questions on Oxidation-Reduction asked in UP Board XII

Explain with reason:
(i) Cr2+ is a reducing agent while Mn3+ is an oxidising agent, while both have d4 configuration.
Write the structure of the product for the reaction:
\[ \text{C}_6\text{H}_5\text{CH}_3 \xrightarrow{\text{CrO}_2\text{Cl}_2} \text{C}_6\text{H}_5\text{CHO} \]
Why metals show their maximum oxidation states in oxides and fluorides?
How many oxidation states are exhibited by lanthanides?

How will you obtain Benzoic Acid from the following?
 (i) Toluene 
(ii) Benzamide 
(iii) Ethyl benzoate 
 

Write the reaction of ozone with lead sulphide.
Write the reaction between NO (g) and O\(_3\) (g).
Reaction of conc. HNO\(_3\) with I\(_2\).
Reaction of nitric acid and zinc.
Explain the method of preparation of ozone gas by electric discharge method.
Give reason that bleaching action of chlorine is permanent while that of SO$_2$ is temporary.
What happens when Sulphur dioxide reacts with acidic potassium permanganate? Write balanced chemical equation for this reaction.
Write chemical equations of two methods of preparation of monohydric alcohol and also write chemical equation of the reactions of ethyl alcohol with conc. sulphuric acid (H$_2$SO$_4$) at different temperatures.