List of top Chemistry Questions

Property of the alkaline earth metals that increases with their atomic number is

Which of the following do not have tetrahedral geometry?

Molar heat of vaporisation of a liquid is $6 \,kJ\, mol^{-1}$. If the entropy change is $16 \,J \,mol^{-1}\, K^{-1}$, the boiling point of the liquid is

A compound $A$ has a molecular formula $C_2Cl_3OH$. It reduces Fehling's solution and on oxidation, gives a monocarboxylic acid $B$. $A$ can be obtained by the action of chlorine on ethyl alcohol. $A$ is

The reaction of a primary amine with chloroform and ethanolic solution of $KOH$ is called

Which of the following pairs has the same size?

Which of the following chemicals does not liberate hydrogen gas on reaction with aluminium metal?

Energy associated with the first orbit of $ {He^+}$ is

In the following compound, the number of ?sp? hybridized carbon is

Which one of the following alcohols is known as wood?s spirit?

What will be $p H$ of the following half-cell $Pt, H _{2} H _{2} SO _{4}$ ? The oxidation potential is $+ 0.3\,V.$

The maximum number of electrons in an , subshell is given by the expression

The correct order of increasing polarising power of the cations in the following is $ AlCl_3,MgCl_2, NaCl $

The correct order of hybridisation of the central atom in the following species $NH _{3},\left[ PtCl _{4}\right]^{2-}, PCl _{5}\left[ BCl _{4}\right]^{-}$

Television picture tubes are

Polymer with low degree of polymerisation is known as

In the lead-acid battery during charging, the cathode reaction is

$Fe^{3+}$ is reduced to $Fe^{2+}$ by using -

The correct statement(s) about $Cr^{2+}$ and $Mn^{3+}$ is (are) - [Atomic numbers of $Cr = 24$ and $Mn = 25$]

Amorphous solids are characterised by property as

The IUPAC name of the coordination compound $\left[ Co \left( H _{2} O \right)_{2}\left( NH _{3}\right)_{4}\right] Cl _{3}$ is