List of top Chemistry Questions

Upon heating with $Cu_2S.$ the reagent(s) that give copper metal is/are

For the reaction: $I ^{-}+ ClO _{3}^{-}+ H _{2} SO _{4} \longrightarrow Cl ^{-}+ HSO _{4}^{-}+ I _{2}$ The correct statement(s) in the balanced equation is/are:

Ultimate product is obtained on heating $B_{2} H_{6}$ with $N H_{3}$ is

Atoms with identical atomic number but different atomic mass number are known as

The colour of transition metal compound is due to

Ethylene can be converted into alcohol by treatment of

What elements are present in $ f- $ block series?

In the formation of $ \pi - $ bond, the atomic orbitals overlap in such a way that

A liquid which decomposes at its boiling point can be purified by

Find wrong statement

What is the oxidation number of vanadium in $R b_{4} N a\left[H V_{10} O_{28}\right] ?$

Which of the following has higher bond angle?

First ionisation enthalpy of ${Al}$ is lower than that of ${Mg}$. This is because

The pH value of 0.01 N NaOH solution is

The number of atoms in $100\,g$ of an $fcc$ crystal with density, $d = {10\, g/cm^3}$ and cell edge equal to $100\,pm$, is equal to

The nature of bonding between adjacent atoms in graphite is

The increasing order of stability of the following radicals is

The correct order of acidic strength of (i) Alcohol (ii) Acetic acid (iii) 2,4,6-Trinitrophenol (iv) Phenol is

The coordination number of ${Pt}$ and ${Fe}$ in ${[PtCl_6] }$ and ${[Fe(NH3)4] }$ repectively are

Kohlrausch's law states that at

For the redox reaction, ${ MnO_4^- + C2O4^{2-} + H+ ? Mn^{2+} + CO2 + H2O}$ .The correct stoichiometric coefficients of ${ MnO_4^-, C2O_4^{2-}}$ and ${H^+}$ are

At $CMC$, the surfactant molecules undergo

A unit cell of diamond consists of

Three centre - two electron bond is present in

The volume strength of $3.0\, N\, H_2O_2$ is