List of top Questions asked in UPSEE- 2019

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