List of top Chemistry Questions

The common method of extraction of metals from oxide ores is

The colour of the iodine solution is discharged by shaking with

The colour of the solid iodine is

The combination of two layers of opposite charges around the colloidal particle is called Helmholtz electrical double layer. The potential difference between the fixed layer and the diffused layer of opposite charge is called

The colour of p-aminoazobenzene is

The colour of $CuCr_2O_7$ solution in water is green because ?

The colour of $K_2Cr_2O_7$ changes from red orangeto lemon yellow on treatment with aqueous KOH because of

The colloidal solution of two immiscible liquids is called

The colligative properties depend upon

The closed vessel of volume $0.02m^3$ contaihs mixture of two gases Neon & Argon the total mass of mixture is 28 gm. The mass of individual gases in vessel is $(M_{neon}=20,M_{argon }=40,R=8.3.l/mol-$

The coagulation of colloidal particles of the sol can be caused by

The chief reaction product of reaction between n-butane and bromine at 130?C is :

The chemical reagent used for leaching of gold and silver ores is

The chemical name of aspirin is

The chemical composition of cryolite mineral is

The charge on cobalt in $ {[Co(CN)_6 ]^{3-}}$ is

The charge on $1$ gram ions of $Al^{3+}$ is

The cell constant is the product of resistance and

The cell reaction of the galvanic cell :$Cu (r)|Cu^2+(aq) ||Hg^{2+}(aq) Hg | (l)$ is

The cause of Brownian movement is

The catenation tendency of C, Si and Ge is in the order Ge < Si < C. The bond energies (in kJ mol$^{-1}$) of C - C, Si - Si and Ge -Ge bonds are respectively;

The catalytic activity of transition metals and their compounds is ascribed mainly to

The carbide of which of the following metals on hydrolysis gives allylene or propyne?

The carbon atom of the carbonyl group is

The Bronsted acid which gives the weakest conjugate base is