List of top Chemistry Questions on Chemical Reactions

Match List-I with the List-II

List-I Reaction	List-II Type of redox reaction
(A) N2(g) + O2(g) → 2NO(g)	(I) Decomposition
(B) 2Pb (NO3)2(s) → 2PbO(s) + 4NO2(g) + O2(g)	(II) Displacement
(C) 2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)	(III) Disproportionation
(D) 2NO2(g) + 2OH-(aq) → NO2-(aq) + NO3-(aq) + H2O(l)	(IV) Combination

Choose the correct answer from the options given below:

Identify the product A in the following reaction.

Consider the above chemical reaction. Product "A" is:

The major products formed:

A and B respectively are:

Consider the following reaction: \( \text{MnO}_2 + \text{KOH} + \text{O}_2 \rightarrow \text{A} + \text{H}_2\text{O} \). Product ‘A’ in neutral or acidic medium disproportionates to give products ‘B’ and ‘C’ along with water. The sum of spin-only magnetic moment values of B and C is _________ BM (nearest integer).
(Given atomic number of Mn is 25)

Identify the name reaction

Major product of the following reaction is

The products A and B formed in the following reaction scheme are respectively

Products for the below reaction are:

Which of the following reactions are disproportionation reactions?
\(\text{(A) } \text{Cu}^+ \rightarrow \text{Cu}^{2+} + \text{Cu}\)
\(\text{(B) } 3\text{MnO}_4^{2-} + 4\text{H}^+ \rightarrow 2\text{MnO}_4^- + \text{MnO}_2 + 2\text{H}_2\text{O}\)
\(\text{(C) } 2\text{KMnO}_4 \rightarrow \text{K}_2\text{MnO}_4 + \text{MnO}_2 + \text{O}_2\)
\(\text{(D) } 2\text{MnO}_4^- + 3\text{Mn}^{2+} + 2\text{H}_2\text{O} \rightarrow 5\text{MnO}_2 + 4\text{H}^+\)
Choose the correct answer from the options given below.

The rate of a reaction quadruples when temperature changes from 27°c to 57°c. Calculate the energy of activation
Given R=8.314 J K-1 mol-1, log 4=0.6021

For given reaction:

‘P’ is

Identify the correct reagents that would bring about the following transformation.

Identify the major product C formed in the following reaction sequence:

The products A and B obtained int he following reactions, respectively, are
3ROH+PCI₃→3RCI+A 
ROH+PCI₅→RCI+HCI+B

For the reaction 2A⇋ B + C, KC = 4 × 10^–3 . At a given time, the composition of reaction mixture is: [A] = [B] = [C] = 2 × 10–3 M. Then, which of the following is correct?

Match List I with List II

List-I (Reaction)		List-II  (Reagents/Condition)
(A)		(I)
(B)		(II)	CrO3
(C)		(III)	KMnO4/KOH, \(\Delta\)
(D)		(IV)	(i) O3 (ii) Zn-H2O

Choose the correct answer from the options given below:

The reagents with which glucose does not react to give the corresponding tests/products are
A. Tollen's reagent
B. Schiff's reagent
C. HCN
D NH₂OH
E. NaHSO₃
Choose the correct options from the given below:

Activation energy of any chemical reaction can be calculated if one knows the value of

The major product P formed in the given reaction is:

Find out the major product for the following reaction.

Major product 'P' formed in the following reaction is:

Identify $X , Y$ and $Z$ in the following reaction (Equation not balanced) $ClO + NO _2 \rightarrow \underline{ X } \stackrel{ H _2 O }{\longrightarrow} \underline{ Y }+\underline{Z}$