List of top Chemistry Questions

Which of the following is the correct hybridization of $ \text{XeF}_4 $?

If $ x |x - 3| + 3 |x - 2| + 1 = 0 $, then the number of real solutions is.

Consider the following graph between Rate Constant (K) and $ \frac{1}{T} $: Based on the graph, determine the correct order of activation energies $ E_{a1}, E_{a2}, $ and $ E_{a3} $.

Statement-1: Alcohol is prepared from alkyl halide in the presence of aqueous KOH by elimination.
Statement-2: Alkenes are prepared from alkyl halide with alcoholic KOH by $\beta$-elimination.
Which of the following options is correct? 1. Statement-1 and Statement-2 are correct.
2. Statement-1 and Statement-2 are incorrect.
3. Statement-1 is true and Statement-2 is false.
4. Statement-1 is false and Statement-2 is true.

Maximum IE and minimum IE of group 13 elements are:

Given below are two statements: - Assertion (A): Sodium on reaction with alcohols liberates $ \text{H}_2 $ gas. - Reason (R): Alcohols are acidic in nature. In the light of the above statements, choose the correct answer from the options below:

Transition metal belonging to the 3d series having the lowest enthalpy of atomization in its most stable oxidation state forms oxide $ \text{MO} $. Nature of the oxide is:

A compound having molecular formula $ \text{MX}_3 $ has van't Hoff factor of 2. What is the degree of dissociation?

One mole of an ideal gas expands from 10 dm$^3$ to 20 dm$^3$ through an isothermal reversible process. Find $ \Delta U $, $ q $, and $ w $.

Incorrect order of atomic radius is?

In the following, the number of paramagnetic molecules are: O$_2$, N$_2$, F$_2$, B$_2$, Cl$_2$.

Area bounded by $ |x - y| \leq y \leq 4\sqrt{x} $ is equal to (in square units):

0.5 g of an organic compound gives 1.46 g CO$_2$ and 0.9 g H$_2$O. Find the percentage composition of carbon.

Order of limiting molar conductivities of these cations at 298 K is:

Which of the following has the highest atomic number?

Which of the following ions shows spin only magnetic moment of 4.9 B.M.?

Statement-I: Melting point of neopentane is greater than that of n-pentane.
Statement-II: Neopentane gives only one mono-substituted product.

In 3, 3-dimethylhex-1-en-4-yne, the number of sp, sp² and sp³ carbon atoms, respectively are:

What are the units of viscosity, intensity of wave, and pressure gradient?

Which of the following is the correct order of basic strength of amines in aqueous medium?

The complex of Ni$^{2+}$ ion and dimethyl glyoxime contains ____ number of Hydrogen (H) atoms.

Consider the following cases of standard enthalpy of reaction ($ \Delta H_f^\circ $ in kJ mol$^{-1}$): \[ \text{C}_2\text{H}_6(g) + 7 \text{O}_2(g) \rightarrow 2 \text{CO}_2(g) + 3 \text{H}_2\text{O}(l) \quad \Delta H_1^\circ = -1550 \] \[ \text{C(graphite)} + \text{O}_2(g) \rightarrow \text{CO}_2(g) \quad \Delta H_2^\circ = -393.5 \] \[ \text{H}_2(g) + \frac{1}{2} \text{O}_2(g) \rightarrow \text{H}_2\text{O}(g) \quad \Delta H_3^\circ = -286 \] The magnitude of $ \Delta H_f^\circ $ of $ \text{C}_2\text{H}_6(g) $ is ____ kJ mol$^{-1}$ (Nearest integer).

The compound with molecular formula C$_6$H$_6$, which gives only one monobromo derivative and takes up four moles of hydrogen per mole for complete hydrogenation has ___ $\pi$ electrons.

Niobium (Nb) and ruthenium (Ru) have "x" and "y" number of electrons in their respective 4d orbitals. The value of $ x + y $ is:

The species which does not undergo disproportionation reaction is: