JEE Main 2020 (Online) 6th September Evening Slot

A solution of phenol in chloroform when treated
with aqueous NaOH gives compound P as a
major product. The mass percentage of carbon
in P is ______. (to the nearest integer)
(Atomic mass : C = 12; H = 1; O = 16)

The correct match between Item-I (starting
material) and Item-II (reagent) for the
preparation of benzaldehyde is :

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The IUPAC name of the following compound is :

Which one of the following statements is not
true?

The value of KC is 64 at 800 K for the reaction
N2(g) + 3H2(g) ⇌ 2NH3(g)
The value of KC for the following reaction is :
NH3(g) ⇌ \({1 \over 2}\)N2(g) + \({3 \over 2}\)H2(g)

The rate of a reaction decreased by 3.555
times when the temperature was changed
from 40oC to 30oC. The activation energy
(in kJ mol–1) of the reaction is _______.
Take;
R = 8.314 J mol–1 K–1 ln 3.555 = 1.268

Which of the following compounds can be
prepared in good yield by Gabriel phthalimide
synthesis?

For a d4 metal ion in an octahedral field, the
correct electronic configuration is :

Mischmetal is an alloy consisting mainly of :

For the given cell :
Cu(s) | Cu2+(C1M) || Cu2+(C2M) | Cu(s)
change in Gibbs energy (\(\Delta\)G) is negative, if :

The increasing order of the boiling points of
the major products A, B and C of the following
reactions will be :

Dihydrogen of high purity (> 99.95%) is
obtained through :

If the solubility product of AB2 is 3.20 \(\times\) 10–11 M3,
then the solubility of AB2 in pure water is
_____ \(\times\) 10–4 mol L–1.
[Assuming that neither kind
of ion reacts with water]

The element that can be refined by distillation
is :

The reaction of NO with N2O4 at 250 K gives :

Reaction of an inorganic sulphite X with dilute
H2SO4 generates compound Y. Reaction of Y
with NaOH gives X. Further, the reaction of X
with Y and water affords compound Z. Y and Z,
respectively, are :

The atomic number of Unnilunium is _______.

The correct match between Item - I and Item - II
is :

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Match the following compounds (Column-I) with
their uses (Column-II) :

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Match the following :

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A crystal is made up of metal ions 'M1' and 'M2'
and oxide ions. Oxide ions form a ccp lattice
structure. The cation 'M1' occupies 50% of
octahedral voids and the cation 'M2' occupies
12.5% of tetrahedral voids of oxide lattice. The
oxidati...

A set of solutions is prepared using 180 g of
water as a solvent and 10 g of different nonvolatile solutes A, B and C. The relative
lowering of vapour pressure in the presence of
these solutes are in the order :[Given, molar
mass of A = 100...

The average molar mass of chlorine is
35.5 g mol–1. The ratio of 35Cl to 37Cl in naturally
occuring chlorine is close to :

For Freundlich adsorption isotherm, a plot of
log (x/m) (y-axis) and log p (x-axis) gives a
straight line. The intercept and slope for the
line is 0.4771 and 2, respectively. The mass of
gas, adsorbed per gram of adsorbent if the
initial pr...

For a reaction,
4M(s) + nO2(g) \(\to\) 2M2On(s)
the free energy change is plotted as a function
of temperature. The temperature below which
the oxide is stable could be inferred from the
plot as the point at which :