List of top Chemistry Questions

Statement-I: Sucrose is dextrorotatory upon hydrolysis it becomes laevorotatory.
Statement-II: Sucrose on hydrolysis gives glucose and fructose such that the levorotation of glucose is more than dexrotation of fructose.
Compare rate of S$_N^1$
Statement-I:
Major product is ortho substituted product and minor product is para substituted.
Statement-II:
Ortho \& Para substituted products can be separated by steam distillation.
Four elements from the second period Boron to Oxygen can have the following IE$_1$ values (in kJ mol$^{-1}$): 1086.5, 800.6, 1313.9, 1402.3. The value of IE$_1$ for Nitrogen is:
Some species are given: \[ \mathrm{Ni^{2+},\ Fe^{2+},\ Co^{2+},\ V^{3+}\ \text{and}\ Ti^{2+}} \] How many species have magnetic moment (spin-only) less than \(3\) BM?
Given below are two statements: Statement-I: The correct order for radius is \[ \mathrm{Al > Mg> Mg^{2+} > Al^{3+}} \] Statement-II: Atomic size always depends on electronegativity. In the light of the above statements, choose the correct option.
Which of the following solutions is the most acidic?
$10^{-6} \text{ M } \text{NaOH}$ is diluted 100 times. The $\text{pH}$ of the diluted base is:
The $\text{pH}$ of pure water at $25^{\circ}\text{C}$ is:
$1.0 \times 10^{-4} \text{ M } \text{HCl}$ is diluted 10 times. The $\text{pH}$ of the final solution is:
The $\text{pH}$ of a solution with $[\text{H}^+] = 3.2 \times 10^{-3} \text{ M}$ is closest to:
The pH of a solution with \([\text{H}^+] = 3.2 \times 10^{-3}\,\text{M}\) is closest to:
Which of the following solutions is the most acidic?
\(10^{-6}\,\text{M}\) NaOH is diluted 100 times. The pH of the diluted base is:
The pH of pure water at 25\(^\circ\)C is:
\(1.0 \times 10^{-4}\,\text{M}\) HCl is diluted 10 times. The pH of the final solution is:
What is the number of radial nodes for a 4f orbital?
The maximum covalency of a non-metallic group 15 element 'E' with the weakest E-E bond is:
The metal ion whose electronic configuration is not affected by the nature of the ligand and which gives a violet color in non-luminous flame under hot condition in borax bead test is:
Define Azeotrope. What type of Azeotrope is formed by negative deviation from Raoult's law? Give an example.
The following solutions were prepared by dissolving 1 g of solute in 1 L of the solution. Arrange the following solutions in decreasing order of their molarity: (A) Glucose (molar mass = 180 g mol$^{-1}$)
(B) NaOH (molar mass = 40 g mol$^{-1}$)
(C) NaCl (molar mass = 58.5 g mol$^{-1}$)
(D) KCl (molar mass = 7(4)5 g mol$^{-1}$)
Why are low spin tetrahedral complexes rarely observed?
The value of van't Hoff factor, i, for CH₃COOH solution in water will be
Write the reactions involved when D-glucose is treated with the following reagents:
(a) HCN
(b) Br\(_2\) water
The charge required for the reduction of 1 mol of MnO$_4^-$ to MnO$_2$ is