List of top Questions asked in KCET, JIPMER

Light from two coherent sources of the same amplitude $A$ and wavelength $\lambda$ illuminates the screen. The intensity of the central maximum is $I_0$. If the sources were incoherent, the intensity at the same point will be
If $\vec {a}= {2\hat{i}}+3\hat{j}-\hat k,\vec b = \hat i+2 \hat j-5 \hat k ,\vec{ c} =3 \hat i+ 5\hat j-\hat k,$ then a vector perpendicular to $\vec{a}$ and in the plane containing $\vec {b}$ and $\vec {c}$ is
If $A = \begin{bmatrix} {1}&{-2} &{2}\\ {0}&{2}& {-3} \\ {3}&{-2}&{4}\\ \end{bmatrix} $,then $A . adj(A)$ is equal to
OA and BO are two vectors of magnitudes 5 and 6 respectively. If $\angle B O A=60^{\circ}$, then $0 A \cdot O B$ is equal to
Acidified sodium fusion extract on addition of ferric chloride solution gives blood red colouration which confirms the presence of
In acetylene molecule, between the carbon atoms there are
In the periodic table metals usually used as catalysts belong to
Hydroxyl ion concentration of $1M\, HCl$ is
When conc. $H_2SO_4$ is heated with $P_2 O_5$, the acid is converted into
Which one of the following is a second order reaction ?
A prism of a certain angle deviates the red and blue rays by $8^\circ$ and $12^\circ$ respectively. Another prism of the same angle deviates the red and blue rays by $10^\circ$ and $14^\circ$ respectively. The prisms are small angled and made of different materials. The dispersive powers of the materials of the prisms are in the ratio
Gram molecular volume of oxygen at $STP$ is
The number of unidentate ligands in the complex ion is called
Formation of coloured solution is possible when metal ion in the compound contains
The general formula of a cycloalkane is
The maximum height attained by a projectile when thrown at an angle $\theta $ with the horizontal is found to be half the horizontal range. Then $\theta $ =
The dimensional formula for impulse is
The ionization energy of $Li^{2+}$ is equal to
The de Broglie wavelength of a proton (charge = $1.6\times10^{-19}C$ mass = $1.6\times10^{-27} kg)$ accelerated through a p.d of $1\, kV$ is
Minority carriers in a $p-type$ semiconductor are
$x^2 + y^2 -6x-6y + 4 = 0, x^2 + y^2 - 2x - 4y + 3 - 0 , x^2 + y^2 + 2k x + 2y +1 = 0$. If the Radical centre of the above three circles exists, then which of the following cannot be the value of $k$ ?
How many chiral carbon atoms are present in $2,3,4$ - trichloropentane ?
Dalton's law of partial pressures is applicable to which one of the following systems ?
Mutation can not change
The absolute enthalpy of neutralisation of the reaction $MgO (s)+2 HCl (a q) \longrightarrow MgCl _{2}(a q)+ H _{2} O (l)$ will be