List of top Chemistry Questions

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 $CuCr_2O_7$ 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 colour of p-aminoazobenzene is
The colligative properties depend upon
The coagulation of colloidal particles of the sol can be caused by
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 chemical reagent used for leaching of gold and silver ores is
The chief reaction product of reaction between n-butane and bromine at 130?C 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
The bond energy of an O - H bond is 109 k cal/mole. When a mole of water is formed then
The bond angle in $PH_3$ is close to
The bond between phosphate and hydroxyl group of sugar in nucleic acid is