List of top Questions asked in COMEDK UGET- 2010

If $^nC_1 + 2\, ^nC_2 + .... + n\, ^nC_n = 2n^2$, then $ n = $
$ \sin^2 5^{\circ} + \sin^2 10^{\circ} + \sin^2 15^{\circ} +....+ \sin^2 90^{\circ} $ =
The digit in the unit place of $2009! + 3^{7886}$ is
If $|\vec{a} | = 15 , |\vec{b} | = 12$ and $|\vec{a} + \vec{b} | = 20 $ then $|\vec{a} - \vec{b} | = $
If $\log y= m \tan^{-1} x,$ then
$ \frac{1 -\tan^2 15^\circ}{1 + \tan^2 15^\circ} = $
The slopes of the tangent and normal at $(0, 1)$ for the curve $y = \sin x + e^x$ are respectively
Gibb's free energy G is defined as
Which of the following ores will be concentrated by froth floatation method?
The type of hybridisation of nitrogen atom in $ {NH_3}$ is
The outer electronic configuration $s^2p^5$ is possessed by
Which of the following molecules exist?
75% of a first order reaction was completed in 32 minutes. When was 50% of the reaction completed
Raindrops falling down attain limited value of velocity because of
Which of the following pairs is isoelectronic?
A body of mass 3 kg at rest is acted on by a force and the body moves through a distance 20 m in 5 s. Force on the body is
A gas is considered ideal at
Which of the following is not used to distinguish ethane from ethene ?
In a sonometer experiment, when the tension is changed by $10\, kg \, wt$, fundamental frequency emitted increases by $50 \%$ . Original tension in kg wt is
Least stable structure in liquid crystalline state is observed in
Hofmann's bromamide reaction is used to convert
The indicator used in the titration of sodium carbonate and hydrochloric acid is
For a cell reaction involving two electron change, the standard e.m.f. of the cell is found to be 0.295 Vat 298 K. The equilibrium constant of the reaction at the same temperature will be
IUPAC name of $ {K_3[Fe(CN)_6]}$ is
If the rate equation for reaction is, rate =$ k[A][B]^{1/2}$, the order of reaction is