List of top Chemistry Questions asked in JEE Main

Which polymer is used in the manufacture of paints and lacquers?

Which among the following is the most reactive?

Calamine is an ore of :

In the context of the Hall-Heroult process for the extraction of $Al$, which of the following statements is false?

Which of the following compounds is not an antacid?

Match the catalysts to the correct processes :

Permanent hardness in water cannot be cured by :

Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?

Which physical property of dihydrogen is wrong ?

Chlorine water on standing loses its colour and forms :

Addition of phosphate fertilisers to water bodies causes :

In the long form of the periodic table, the valence shell electronic configuration of $5s^2 5p^4$ corresponds to the element present in :

The least number of oxyacids are formed by :

If $m$ and $e$ are the mass and charge of the revolving electron in the orbit of radius $r$ for hydrogen atom, the total energy of the revolving electron will be :

The total number of octahedral void(s) per atom present in a cubic close packec structure is :-

The most suitable reagent for the conversion of $RCH_2OH \to RCHO$ is

In the Victor-Meyer's test, the colour given by $1^{\circ}$, $2^{\circ}$and $3^{\circ}$ alcohols are respectively :

For the compounds $CH_3Cl, \, CH_3Br,\,CH_3I$ and $CH_3F,$ the correct order of increasing $C$-halogen bond length is :

Tischenko reaction is a modification of :

In the presence of peroxide, $HCl$ and $HI$ do not give anti-Markownikoff' s addition to alkenes because :

Considering the basic strength of amines in aqueous solution, which one has the smallest $pK_b$ value?

Conversion of benzene diazonium chloride to chloro benzene is an example of which of the following reactions ?

Amongst $LiCl, RbCl, BeCl_2$ and $MgCl_2$ the compounds with the greatest and the least ionic character, respectively are :

Which one of the following molecules is paramagnetic ?

In S$_N$2 reactions, the correct order of reactivity for the following compounds $CH_3Cl,CH_3CH_2Cl, (CH_3 )_2CHCl$ and (CH$_3 )_3CCl$ is