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Amount of oxalic acid present in a solution can be determined by its titration with $KMnO_{4}$ solution in the presence of $H_{2}SO_{4}$. The titration gives unsatisfactory result when carried out in the presence of HCl, because HCl

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A thin rod of length 'L' is lying along the x-axis with its ends at $x=0andx=L$. Its linear density (mass/length) varies with x as $k(Lx )_{n}$, where n can be zero or any positive number. If the position $x_{CM}$ of the centre of mass of the rod is plotted against 'n', which of the following graph best approximates the dependence of $x_{CM}$ on n ?

Using MO theory predict which of the following species has the shortest bond length ?

The lines $p(p_{2}+1)xy+q=0$and$(p_{2}+1)_{2}x+(p_{2}+1)y+2q=0$areperpendicular to a common line for

The vapour pressure of water at $20_{2}C$ is 17.5 mm Hf. If 18 g of glucose $(C_{6}H_{12}O_{6})$ is added to 178.2 g of water at $20_{∘}C$, the vapour pressure of the resulting solution will be

For a reaction

The height at which the acceleration due to gravity becomes $9g $ (where g = the accleeration due to gravity on the surface of the earth) in terms of R, the radius of the earth is

The IUPAC name of neopentane is

The area of the plane region bounded by the curves $x+2y_{2}=0$and $x+3y_{2}=1$is equal to