List of top Chemistry Questions

$1$-Chlorobutane on reaction with alcoholic potash gives

Which one of the following configuration is correct for $ Fe^{+3}$ ?

In the preparation of sulphuric acid, $ {{V}_{2}}{{O}_{5}} $ is used in the reaction which is

How many structural isomers can be obtained from $C_2H_2Br_2$

The process carried out in perfect insulation is

When an $\alpha$-particle is removed from $Ra$, the new element formed is of

Glycerol at $ 530\,K $ reacts with oxalic acid to produce

During dehydration of alcohols to alkenes by heating with concentrated $H _{2} SO _{4}$ the initiation step is :

DNA is a polymer of

At higher temperature, iodoform reaction is given by

Solution of $Na_2CrO_4$ in water is coloured. Oxidation state of $Cr$ in $Na_2CrO_4$ is $+6$.

$ {PbI4}$ is a stable compound. Iodide stabilizes higher oxidation state

$NF_3$ is a weaker ligand than $N(CH_3)_3$. $NF_3$ ionizes to give $F^-$ ions in aqueous solution.

The enthalpies of all elements in their standard states are:

The shape of an orbital is determined by :

Oxidation number $ Fe $ in $ {{K}_{3}}[Fe{{(CN)}_{6}}] $ is:

The following compound cannot exhibit: $ C{{H}_{3}}CH=CH-CH(OH)\cdot COOH $

Which of the following turns potassium dichromate paper green?

Which of the following order of ionisation energy is correct?

Among the following the weakest base is

The ion which is not tetrahedral in shape is

$MnO _{4}^{2-}(1 mole )$ in neutral aqueous medium is disproportionated to

The true statement for the acids of phosphorus, $H_3PO_2$, $H_3PO_3$ and $H_3PO_4$ is

The paramagnetic species is

Which of the following are arranged in the decreasing order of dipole moment?