List of top Questions asked in COMEDK UGET

The unstable intermediate dichlorocarbene $ {[:CCl_2]}$ is formed during
If the circle $x^2+y^2+2\,gx+2fy+=0,$ and $x^2+y^2+2g'x+2f'y$ touch each other, then
An orbital with $n = 3, l = 1$ is designated as
On an average, a human heart is found to beat $72$ times a minute. Its frequency and period are
A crystalline solid has $A^-$ ions at the corners and face centres whereas $B^+$ ions are at the body centre and edge centres of the unit cell. The simplest formula of the compound will be
A proton and helium nucleus are shot into a magnetic field at right angles to the field with same kinetic energy. Then the ratio of their radii is
Which one of the following represents uniform motion ?
The photoelectric threshold for a certain metal is $3600\, \mathring A$. The maximum energy of the ejected photoelectrons by radiation of $2000\, \mathring A$ is (Given $h = 6.62 \times 10^{-34} J \, s$ )
Among $2$-chloropropanoic acid, $3$-chloropropanoic acid, $2,2$-dichloroacetic acid and propanoic acid the $K_a$ values will be in the order,
Among the following compounds, the only one which is not an. artificial sweetening agent is
Which of the following is an empty set?
An aeroplane is flying horizontally with a velocity of $360\, km\, h^{-1}$. The distance between the tips of the wings of the aeroplane is $50\, m$. The vertical component of the earth's magnetic field is $4 \times 10^{-4} \, Wb \, m^{-2}$. The induced e.m.f. is
Atomic numbers of vanadium, chromium, nickel and iron are $23, 24, 28$ and $26$ respectively. Which one of these is expected to have the highest second ionization enthalpy?
Rain water is called acid rain when its $pH$
For $S_N1$ reaction, the order of reactivity of haloalkanes is
The ratio of $ \frac{C_P}{C_V}$ for a diatomic gas is
A concave mirror forms an enlarged, erect, virtual image of an object, only when the object is placed
The mutual inductance between two coils depends upon
The centre of mass of a system of two bodies of masses $M$ and $m, (M > m)1$ separated by a distance $d$ is
Find the energy equivalent of one atomic mass unit in joules and in $MeV$.
The major product formed when alkyl iodide is treated with excess of ammonia
The interval I such that $\int^1_0\frac{dx}{\sqrt{1+x^4}}\in \,I$ is given by
Sodium dissolves in liquid $NH_3$ to give a deep blue solution. This is due to
Standard molar enthalpies of formation of $ {CaCO_{3(s)} CaO_{(s)}}$ and $ {CO_{2(g)}}$ are $ {-1206.92\, kJ \, mol^{-1}, -635.09\, kJ\, mol^{-1}}$ and $ {-393.51\, kJ\, mol^{-1}}$ respectively. The $\Delta H_r$ for decomposition of $ {CaCO_{3(s)}}$ is
The normal magnetic flux passing through a coil changes with time according to the equation $\phi = 6t^2 - 5t + 1$. What is the magnitude of the induced current at $t = 0.253\, s$ and resistance $10 \, \Omega $ ?