List of top Chemistry Questions

There is no S- S bond in

According to kinetic theory of gases, for a diatomic molecule

1 -chlorobutane on reaction with alcoholic potash gives

The linear structure assumed by

The tendency of \(BF_3, BCI_3 \, and \, BBr_3\) behave as Lewis acid decreases in the sequence

The density of neon will be minimum at

Which one shows maximum hydrogen bonding?

In van der Waals equation of state for a non-ideal gas, the term that accounts for inter molecular forces is

The reagents which can be used to distinguish acetophenone from benzophenone is (are)

An ion has 18 electrons in the outermost shell, it is

The number of gram molecules of oxygen in $6.02 \times 10^{24}$ CO molecules is

The complex ion $[Co(NH_3)_6]^{3+}$ is formed by $sp^3d^2$ hybridisation. Hence, the ion should possess

The molecular weight of $O_2$ and $SO_2$ are 32 and 64 respectively. At $15^{\circ}C$ and 150 mmHg pressure, 1L of $O_2$ contains -N - molecules. The number of molecules in 2L of $SO_2$ under the same conditions of temperature and pressure will be

Among $LiCl, BeCl_2, BCl_3 $and $CCl_4$ , the covalent bond character follows the order

If $\Delta H$ is the change in enthalpy and $\Delta E$, the change in internal energy accompanying a gaseous reaction, then

Linear combination of two hybridised orbitals belonging to the two atoms, each having one electron leads to a

Absolute zero is defined as the temperature

Which statement is not correct?

An organic compound X(molecular formula C6H7O2N) has six carbon atoms in a ring system, two double bonds and a nitro group as substituent, X is

Boron has two stable isotopes, $^{10}B (19 \%)$ and $ ^{11}B (81\%)$. Calculate average atomic weight of boron in the periodic table.

Root mean square velocity of a gas molecule is proportional to

Compared with the alkaline earth metals, the alkali metals exhibit

The ability of a substance to assume in two or more crystalline structures is called

The coordination number of copper in cupram- monium sulphate is

The ionisation of hydrogen atom would give rise to