List of top Chemistry Questions

The dissociation values of four acids are as follows which of the above value is stands for strongest acid:

For $14\, g$ of $CO$ the wrong statement is :

The shape of cuprammonium ion is

The $pH$ value of decinormal solution of $NH_4OH$ which is $20\%$ ionised is

The $pH$ of aqueous solution of ammonium formate is $\left( p K_{a}\right.$ of $HCOOH =3.8$ and $pK _{b}$ of $\left.NH _{3}=4.8\right)$

The equivalent weight of aluminium in $ A{{l}_{2}}{{O}_{3}} $ will be:

The disease Beri-beri is caused due to deficiency of vitamin

The composition of carnallite is

Nitrobenzene on nitration produce :

The incorrect statement regarding vitamins is:

$4.6 \,kJ$ heat is liberated on burning $0.5 \,g$ of sulphur. The enthalpy of formation of $ SO_{2} $ is: [molecular weight of $S = 32, O = 16]$

Isotopes have :

At $ 25 ^{\circ}C $ the pH value of a solution is $6$, the solution is:

Which of the noble gas has highest polarizability

The alcohol which is used as a beverage is

Solutions with same osmotic pressures are called

Rate determining step in nitration of benzene is

Percentage of Se (at. mass $=78.4$ ) in peroxidase anhydrase enzyme is $0.5 \%$ by weight, then minimum molecular mass of peroxidase anhydrase enzyme is

$ { PbO_2 -> PbO \, \Delta G_{298} < 0 }$ $ { SnO_2 -> SnO \, \Delta G_{298} > 0}$ Most probable oxidation state of Pb & Sn will be :

Molarity of liquid HCl if density of li HCl is 1.17 gm/cc : -

Minimum excitation potential of Bohrs first orbit in hydrogen atom is:

Lithopone is:

$dsp^2$ hybridisation is found in

Crystalline solids have

Correct equation of Freundlich isotherm is