List of top Questions asked in WBJEE

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

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

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

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

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

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

$20\, mL\, 0.1( N )$ 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 $4.74$ )

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

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

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 blood vessel which supply oxygenated blood to cardiac tissue is

Juxtaglomerular apparatus is made up of

All or none law is not applicable for

The volume of Anatomical Dead Space air is normally

What current will flow through the $2\,k\Omega$ resistor in the circuit shown in the figure?

A Wheatstone bridge has the resistances $10\, \Omega,\, 10\, \Omega, 10\, \Omega$ and $30\, \Omega$ in its four arms. What resistance joined in parallel to the $30\, \Omega$ resistance will bring it to the balanced condition?

Which one of the following is wrong about molecularity of a reaction?

The weight of oxalic acid that will be required to prepare a $1000\, mL$ $\left(\frac{N}{20}\right)$ solution is

Equal weights of $CH_{4}$ and $H_{2}$ are mixed in an empty container at $25^\circ C$. The fraction of the total pressure exerted by $H_{2}$ is

In a reversible chemical reaction at equilibrium, if the concentration of any one of the reactants is doubled, then the equilibrium constant will

In a normal adult human, the average cardiac output (stroke volume) is

Third and fourth ventricles of the brain are connected by

One micrometer is equal to

Muga silk worm feeds on

The volume of ??natomical dead space??air is normally