List of top Questions asked in COMEDK UGET- 2015

The differential equation of the family of parabolas $y^2 = 4ax$, where $a$ is parameter, is
The instantaneous voltage of a $50\,Hz$ generator giving peak voltage as $300\,V$. The generator equation for this voltage is
The mass of oxygen gas which occupies $5.6$ litres at STP would be
The maximum area in square units of an isosceles triangle inscribed in an ellipse $\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1$ with its vertex at one end of the major axis is
The value of $c$ in Lagrange's theorem for the function $f(x) = \log (\sin \, x)$ in the interval $\left[ \frac{\pi}{6} , \frac{5 \pi}{6} \right]$ is
$Nylon-6,6$ is an example of a polymer formed by
The medians $AD$ and $BE$ of a triangle with vertices $A(0, b), B(0, 0) $ & $C(a, 0)$ are perpendicular to each other, if
$\int\limits \frac{x^3 -1}{x^3 + x} dx = $
If $A = \begin{bmatrix}a&0&0\\ 0&a&0\\ 0&0&a\end{bmatrix}$, then det(adj A) is
The correct increasing order of basic strength of following amines, $ {C2H5NH2, NH3, (C2H5)2NH, C6H5NH2}$ in gaseous state is
The magnetite ore is
A straight line meets the coordinates axes at $A$ and $B$, so that the centroid of the triangle $OAB\, is \, (1, 2)$. Then the equation of the line $AB$ is
The number of bijective functions from the set $A$ to itself, if $A$ contains $108$ elements is -
Given $5$ line segments of lengths $2, 3, 4, 5, 6 $ units. Then, the no. of triangles that can be formed by joining these segments is
Two resistances $A$ and $B$ have colour codes orange, blue, white and brown, red, green respectively. Then ratio of their resistances $A : B$ is
A contraceptive pill prevents ovulation by
For an adiabatic change in a system, the condition which is applicable will be
An endothermic reaction is found to have $+ve$ entropy change. The reaction will be
For one mole of $ {NaCl_{(s)}}$ the lattice enthalpy is
Silicon doped with arsenic is
An electric dipole consists of two opposite charges, each of magnitude $1.0\, \mu C$ separated by a distance of $2.0 \, cm$. The dipole is placed in an external field of $10^5 \, NC^{-1}$. The maximum torque on the dipole is
Three dice are rolled once. The chance of getting a score of $5$ is
The number of solutions of the equation $\left|cot\,x\right|=cot\,x+\frac{1}{sin\,x}, \left(0 \le x \le 2\pi\right)$ is
The shortest wavelengths of Paschen, Balmer and Lyman series are in the ratio
$ {Pb_3 O_4 + 4HNO_3 -> 2Pb(NO_3)_2 + PbO_2 + 2H_2O }$ Which is true about the lead ions in $ {Pb_3O_4}$ ?