List of practice Questions

The radius of gyration of a solid cylinder of mass $M$ and radius $R$ about its own axis is

The correct IUPAC name of the following compound is

The shunt resistance required to allow $4\%$ of the main current through the galvanometer of resistance $48 \, \Omega$ is

Which of the following solutions is an example of negative deviation from Raoult�s law?

All colloidal dispersions have

Pteridophytes are called vascular cryptogams, because they are non-seeded plants containing:

The host for Cercospora personata belongs to this family of angiosperms :

Benzylamine is a stronger base than aniline because

The mass of a non-volatile solute of molar mass $40\, g \,mol^{-1}$ that should be dissolved in $114\, g$ of octane to lower its vapour pressure by $20 \%$ is

The $s$-block element used as a catalyst in the manufacture of Buna-$S$ rubber is

A body when fully immersed in a liquid of specific gravity $1.2\, $ weighs $44\,gwt$. The same body when fully immersed in water weighs $50\, gwt$. The mass of the body is

If the velocity of light in vacuum is $3\times10^{8}\, ms^{-1},$ the time taken (in nanosecond) to travel through a glass plate of thickness $10 \,cm$ and refractive index $1.5$ is

$20\, mL\, 0.1( N )$ acetic acid is mixed with $10\, mL$ $0.1( N )$ solution of $NaOH$. The $pH$ of the resulting solution is $\left( p K_{a}\right.$ of acetic acid is $4.74$ )

In the adjoining figure the potential difference between $X$ and $Y$ is $60\,V$. The potential difference the points $M$ and $N$ will be

Under identical conditions, the $S_N1$ reaction will occur most efficiently with

The state of hybridization of the central atom and the number of lone pairs over the central atom in $POCl_{3}$ are

Let $p, q$ and $r$ be the sides opposite to the angles $P, Q$ and $R$, respectively in a $\Delta P Q R$. If $r^{2} \sin P \sin Q=p q$, then the triangle is

If the kinetic energy of an electron is increased four times, the wavelength of the de-Broglie wave associated with it would become

The number of diagonals in a regular polygon of $100$ sides is

The normal at $\left(2,\frac{3}{2}\right)$ to the ellipse, $\frac{x^{2}}{16}+\frac{y^{2}}{3} = 1$ touches a parabola, whose equation is

A thin hollow sphere of mass m is completely filled with a liquid of mass $m$. When the sphere rolls with a velocity $v$, kinetic energy of the system is (neglect friction)

EDTA is a hexadentate ligand. Denticity of a ligand is given by number of lone pairs donated to central atom by a ligand.

A charge $+q$ is placed at the origin $O$ of $X-Y$ axes as shown in the figure. The work done in taking a charge $Q$ from $A$ to $B$ along the straight line $AB$ is

The total number of terms in the expansion of $ ( 1 + x ) ^{2n} - ( 1 - x ) ^{2n} $ after simplification is

In the Rutherford experiment, $\alpha$-particles are scattered from a nucleus as shown. Out of the four paths, which path is not possible?