List of top Chemistry Questions on Reaction mechanisms

An egg takes 4.0 minutes to boil at sea level where boiling point of water is $T_1$ K, whereas it takes 8.0 minutes to boil on a mountain top where boiling point of water is $T_2$ K. The activation energy for the reaction that takes place during boiling of egg is
For the reaction:
2H$_2$O$_2$ $\xrightarrow{I^-}$ 2H$_2$O + O$_2$
Given mechanism:
(I) H$_2$O$_2$ + I$^-$ → H$_2$O + IO$^-$ (slow)
(II) H$_2$O$_2$ + IO$^-$ → H$_2$O + I$^-$ + O$_2$ (fast)
(1) Write rate law for the reaction.
(2) Write the overall order and molecularity of the reaction.

What is a rate determining step?

The reactivity order of the following molecules towards SN1 reaction is:
Allyl chloride (I), Chlorobenzene (II), Ethyl chloride (III)
The product ’P’ in the above reaction is:
product p
Ozonolysis of o-xylene produces:
Ozonolysis of o-xylene
The compounds A and B are respectively:
compounds A and B
The major product of the following reaction is:
major product
Q and R in the reaction sequences are respectively:
Q and R in the reaction
Which of the following statements about the SN2 reaction mechanism is/are true?
Consider the following reaction:
Identify A and B
Identify A and B from the given options:
Give reasons for the following: (a) Chlorine is ortho/para directing in electrophilic aromatic substitution reactions, though chlorine is an electron withdrawing group.
(b) Racemic mixture is optically inactive.
(c) Allyl chloride is hydrolysed more readily than n-propyl chloride.
Write the major product in the following reaction:
ethyl chloride (CH3CH2Cl)

\(A\) is a neutral organic compound (M.F.: \(C_8H_9ON\)). On treatment with aqueous \(Br_2/HO^-\), \(A\) forms a compound \(B\) which is soluble in dilute acid. \(B\) on treatment with aqueous \(NaNO_2/HCl\) (0--5\(^\circ\)C) produces a compound \(C\) which on treatment with \(CuCN/NaCN\) produces \(D\). Hydrolysis of \(D\) produces \(E\) which is also obtainable from the hydrolysis of \(A\). \(E\) on treatment with acidified \(KMnO_4\) produces \(F\). \(F\) contains two different types of hydrogen atoms. The structure of \(A\) is