List of practice Questions

The common bile duct in human is formed by the joining of
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 colloidal solution of two immiscible liquids 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 colour of p-aminoazobenzene is
The coefficients of self induction of two coils are respectively 2 mH and 3 mH. They are coupled so as to oppose each other. What will be their self inductance if their mutual inductance is 1 mH?
The coefficients of three consecutive terms in the expansion of $(1 + a)^n$ are in the ratio $1 : 7 : 42$. Find $n$.
The coil of the ballistic galvanometer oscillates due to :
The colligative properties depend upon
The coefficient of $x^{-7}$ in the expansion of $\left[ax - \frac{1}{bx^{2}}\right]^{11} $ will be
The coefficient of $x^n$ in the binomial expansion of $(1 - x)^{-2}$ is
The coefficient of $x^n$ in the expansion of ($1 - 2x + 3x^{2} - 4x^{3} + ...$ to $\infty$)$^{-n}$ is
The coefficient of linear expansion of a solid depends upon
The coefficient of performance of refrigerator, whose efficiency is $25\%$ is
The coefficient of $x^{50}$ in the expansion of $\frac{\left(3-5x\right)}{\left(1-x\right)^{2}}$ equals
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 co-efficient of $x^{-12}$ in the expansion of$\left(x+\frac{y}{x^3}\right)^{20}$is
The co-efficient of $x^3$ in the expansion of $(1-x+x^2)^5$ is
The coagulation of colloidal particles of the sol can be caused by
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 :