List of top Chemistry Questions on Chemical Reactions

In the above conversion the correct sequence of reagents to be added is

\(CH_3 COOH\) solution turns red litmus into

Methyl orange shows _____ colour in acidic solution.

In the following reactions, P, Q, R, and S are the major products.

The correct statement(s) about P, Q, R, and S is(are)

The compound formed in the following reaction is
\(\text{CH}_3-\text{CH}_2-\text{OH} \xrightarrow[\text{Conc. H}_2\text{SO}_4]{170^\circ\text{C}} \text{?}\)

The gas formed when Zn is treated with dil. HCl is

The product(s) formed in the following reaction is (are):

Which of the following have all equivalent canonical structures ?

Which of the following statements about \(P_4O_6\) and \(P_4O_{10}\)are correct?

Which of the following aqueous mixtures will function as buffer ?

The dimension of the coefficient of viscosity is given by

The standard reduction potentials (Eº) for the following half-cell reactions are
\(Zn^{2+} +2e\rightleftharpoons Zn \space Eº = -0.76 V\)
\(Fe^{2+}+ 2e \rightleftharpoons Fe \space Eº = -0.44 V\)
The (Eº) for the cell reaction \(Fe^{2+} + Zn → Fe+Zn^{2+}\) will be

For a reversible reaction A ⇌ B, the ΔH_{forward reaction} = 20 kJ mol^-1. The activation energy of the uncatalysed forward reaction is 300 kJ mol^-1. When the reaction is catalysed keeping the reactant concentration same, the rate of the catalysed forward reaction at 27°C is found to be same as that of the uncatalysed reaction at 327°C. The activation energy of the cataysed backward reactoion is ____ kJ mol^-1.

What is the purpose of adding gypsum to cement? 

In the following reactions, the total number of oxygen atoms in X and Y is _______
Na₂O + H₂O → 2X
Cl₂O₇ + H₂O → 2Y

During the qualitative analysis of \( SO_{3}^{-2}\) using dilute H₂SO₄, SO₂ gas evolved which turns K₂Cr₂O₇ solution (acidified H₂SO₄)

Consider the following reactions
NO₂ \(\stackrel{UV}{\rightarrow}\) A + B
A + O₂ \(\rightarrow\) C
B + C \(\rightarrow\) NO₂ +O₂
A, B and C are respectively

Consider the following sequence of reactions:

The product 'B' is

The Product formed in the following multistep reaction is

A' formed in the above reaction is

The product (P) formed from the following multistep reaction is:

The correct reaction profile diagram for a positive catalyst reaction.