List of top Questions asked in JEE Advanced

Which of the following has the maximum number of unpaired electrons ?

$^{27}_{13}AI$ is a stable isotope, $^{29}_{13}AI$ is expected to decay by

A metallic solid sphere is placed in a uniform electric field. Which path, the lines of force follow as shown in figure?

The extension in a string, obeying Hooke's law, is x. The speed of transverse wave in the stretched string is v. If the extension in the string is increased to 1.5 x, the speed of transverse wave will be

Which of the following form(s) a virtual and erect image for all positions of the object ?

The orbital angular momentum of an electron in 2s-orbital is

The molecular weight of benzoic acid in benzene as determined by depression in freezing point method corresponds to

Sodium thiosulphate is prepared by

$KF$ combines with $HF$ to form $KHF_2.$ The compound contains the species

If the distance between the earth and the sun were half its present value, the number of days in a year would have been

If $\alpha$ is the fraction of HI dissociated at equilibrium in the reaction, ${ 2HI(g) <=> H_2(g)+I_2(g)}$ starting with the 2 moles of HI, then the total number of moles of reactants and products at equilibrium are

Which of the following is the least stable and its existence is doubtful ?

An aqueous solution $FeSO_4 . Al_2(SO_4 )_3$ and chrome alum is heated with excess of $Na_2 0_2$ and filtered. The materials obtained are

A shell is fired from a cannon with a velocity v (m/s) at an angle 0 with the horizontal direction. At the highest point in its path it explodes into two pieces of equal mass. One of the pieces retraces its path to the cannon and the speed (m/s) of the other piece immediately after the explosion is

Hydrolysis of one mole of peroxodisulphuric acid produces

Which one of the following oxides is neutral ?

A dilute aqueous solution of $ Na_2SO_4 $ is electrolysed using platinum electrodes. The products at the anode and cathode are respectively

Which one of the following molecules is planar?

The function $f(x) = [x] \cos \left(\frac{2x-1}{2}\right) \pi$, [.] denotes the greatest integer function, is discontinuous at

Which has most stable +2 oxidation state?

The function $f(x) = max \{(1 - x), (1 + x), 2\}, x \in (- \infty, \infty)$ is

In the circuit shown in the figure, the current through

A battery of internal resistance $4\Omega$ is connected to the network of resistances as shown in figure. In order that the maximum power can be delivered to the network, the value of R in $2\Omega$ should be

A diminished image of an object is to be obtained on a screen 1.0 m from it. This can be achieved by placing

The probability of India winning a test match against West Indies is 1/2. Assuming independence from match to match the probability that in a 5 match series India's second win occurs at third test, is