JEE Advanced 2020 Paper 2 Offline

An organic compound (C8H10O2) rotates plane-porarised light. It produces pink color with neutral FeCl3 solution. What is the total number of all the possible isomers for this compound?

Consider the following four compounds, I, II, III, and IV. Choose the correct statement(s)

The structure of a peptide is given below. If the absolute values of the net charge of the peptide at $\mathrm{pH}$ $=2$, $\mathrm{pH}=6$, and $\mathrm{pH}=11$ are $\left|Z_1\right|,\left|Z_2\right|$, and $\left|Z_3\right|$, respectively, t...

Consider the following compounds in the liquid form :O2, HF, H2O, NH3, H2O2, CCl4, CHCl3, C6H6, C6H5ClWhen a charged comb is brought near their flowing stream, how many of them show deflection as per the following figure?

Which of the following plots is(are) correct for the given reaction?([P]0 is the initial concentration of P)

Consider the reaction sequence from P to Q shown below. The overall yield of the major product Q from P is 75%. What is the amount in grams of Q obtained from 9.3 mL of P? (Use density of P = 1.00 g mL-1; Molar mass of C = 12.0, H = 1.0, O ...

In an experiment, m grams of a compound X (gas/liquid/solid) taken in a container is loaded in a balance as shown in figure I below.In the presence of a magnetic field, the pan with X is either deflected upwards (figure II), or deflected do...

An acidified solution of potassium chromate was layered with an equal volume of amyl alcohol. When it was shaken after the addition of 1 mL of 3% H2O2, a blue alcohol layer was obtained. The blue colour is due to the formation of a chromium...

Consider the following transformations of a compound P. Choose the correct option(s).

An acidified solution of 0.05 M Zn2+ is saturated with 0.1 M H2S. What is the minimum molar concentration (M) of H+ required to prevent the precipitation of ZnS?Use Ksp(ZnS) = 1.25 \(\times\) 10\(-\)22 and overall dissociation constant of...

A solution of 0.1 M weak base (B) is titrated with 0.1 M of a strong acid (HA). The variation of pH of the solution with the volume of HA added is shown in the figure below. What is the pKb of the base? The neutralisation reaction is given ...

Which among the following statement(s) is/are true for the extraction of aluminium from bauxite?

The 1st, 2nd and 3rd ionisation enthalpies, I1, I2 and I3, of four atoms with atomic numbers n, n + 1, n + 2, and n + 3, where n < 10, are tabulated below. What is the value of n?

Choose the correct statement(s) among the following :

Liquids A and B form ideal solution for all compositions of A and B at 25\(^\circ\)C. Two such solutions with 0.25 and 0.50 mole fractions of A have the total vapour pressure of 0.3 and 0.4 bar, respectively. What is the vapour pressure of...

In the chemical reaction between stoichiometric quantities of KMnO4 and KI in weakly basic solution, what is the number of moles of I2 released for 4 moles of KMnO4 consumed?

The figure below is the plot of potential energy versus internuclear distance (d) of H2 molecule in the electronic ground state. What is the value of the net potential energy E0 (as indicated in the figure) in kJ mol-1, for d = d0 at which ...

Tin is obtained from cassiterite by reduction with coke. Use the data given below to determine the minimum temperature (in K) at which the reduction of cassiterite by coke would take place.At $$298K:{\Delta _f}H^\circ [Sn{O_2}(s)] = - 581....