List of top Chemistry Questions on Redox reactions asked in MHT CET

In acidic medium, which of the following does not change its colour?
How many moles of electrons are required for the reduction of 1 mole of Cr3+ \mathrm{Cr^{3+}} to Cr0 \mathrm{Cr^0} (s)?
In which of the compounds does 'manganese' exhibit the highest oxidation number?
The half-life of a 1st order reaction is 1 hr. What is the fraction of the reactant remaining after 3 hours?
What is the oxidation number of gold in the complex [AuCl4]1−{[AuCl_4]^{1-}} ?
Identify the weakest oxidising agent among the following.
Which of the following given elements is the least reactive among all other elements?