List of top Questions asked in UPSEE

Which of the following is the correct IUPAC name of the following structure

A metal surface of work function 3 eV is illuminated by photons of energy 2 eV. The kinetic energy of emitted photo-electrons will be

Two coherent monochromatic light beams of intensities ratio 1 : 4 are superposed. The ratio of maximum and minimum intensities in the resulting beam will be

Lenz?s law is consequence of the law of conservation of

Kelvin equation is related to

The velocity of sound waves in a medium does not depend on

You are given an ammeter, a galvanometer and a voltmeter. From these, the device having maximum resistance is

A pair of fair dice is tossed repeatedly until a sum of four or an odd sum appears. Then the probability that a sum of four appears first is

Which of the following is not the property of laser beams?

Which of the following alcohol is dehydrated most easily by concentrated $ {H_2SO_4}$

What is the correct volume of equilibrium constant for the following reaction at 400 K if the values of $\Delta H^{\circ}$ is 77.5 kJ $mol^{-1}$ and $ {\Delta S^{\circ} = 135 \; JK^{-1} \; mol^{-1}}$ $ {2NOCl{(g)} <=> 2NO{(g)} + Cl_2{(g)}}$

The value of $\sin 20^{\circ} \; \sin 40^{\circ} \; \sin 80^{\circ} $ equals

The value of $20! + \frac{21!}{1!} + \frac{22!}{2!} + ..... + \frac{60!}{40!} $ is

The unit of self inductance is

The reaction $ { P_4 + 3NaOH + 3H_2O \to 3NaH_2PO_2 + PH_3} $ is an example of

The phase difference between two waves $x_1 = A \; \sin (\omega t + \frac{\pi}{6} )$ and $x_2 = A \cos \omega t $ is

The normal dehydrating agent, used in a laboratory is

The dimensional formula of Reynold?? number is same as

The correct decreasing order of the boiling points of compounds $ {H_2O, HF}$ and $ {NH3}$ is

Find the major product (Considering E as the electrophile) when the following substrate is subjected to electrophilic aromatic substitution

For the following three reactions (i), (ii) and (iii), equilibrium constants are given (i) $ {CO_{(g)} + H_2O_{(g)} <=> CO_{2(g)} + H_{2(g)} ; K_1}$ (ii) $ { CH_{4(g)} + H_2O_{(g)} <=> CO_{(g)} 3H_{2(g)} ; K_2}$ (iii) $ {CH_{4(g)} + 2H_2O_{(g)} <=> CO_{2(g)} + 4H_{2(g)} ; K _3}$ Which of the following relation is correct?

Displacement current is caused due to

Covalent molecules are usually held in a crystal structure by

Titration curve if a strong base is titrated with strong acid is

When an unpolarised beam of light of intensity $I_0$ is incident on a polaroid, the intensity of transmitted light is