List of top Questions asked in KCET, WBJEE

Direction of current induced in a wire moving in a magnetic field is found using

If $(\vec{a} \times \vec{b})^2+(\vec{a}.\vec{b})^2=144$ and $|\vec{a}|$ then $ |\vec{b}|$=

The circular motion of a particle with constant speed is

A point source of light is kept below the surface of water $(n_w = \frac{4}{3})$ at a depth of $\sqrt{7}$ m. The radius of the circular bright patch of light noticed on the surface of water is

The dimensional formula of physical quantity is $[M^a \,L^b\, T^c]$. Then that physical quantity is

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

All colloidal dispersions have

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

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

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

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 $4.74$ )

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

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

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

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

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

If $\alpha ,\beta,\gamma$ are the roots of the equation $x^3+4x+2=0$ then $\alpha^3+\beta^3+\gamma^3$

All or none law is not applicable for

The volume of Anatomical Dead Space air is normally