JEE Main 2022 (Online) 27th July Evening Shift

The structure of A in the given reaction is :

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The spin only magnetic moment of the complex present in Fehling's reagent is __________ B.M. (Nearest integer).

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The number of molecule(s) or ion(s) from the following having non-planar structure is ____________.
$$\mathrm{NO}_{3}^{-}, \mathrm{H}_{2} \mathrm{O}_{2}, \mathrm{BF}_{3}, \mathrm{PCl}_{3}, \mathrm{XeF}_{4}, \mathrm{SF}_{4}, \mathrm{XeO}_{3}...

\(\matrix{ {[A]} & \to & {[B]} \cr {{\mathop{\rm Reactant}\nolimits} } & {} & {{\mathop{\rm Product}\nolimits} } \cr }\)
If formation of compound \([\mathrm{B}]\) follows the first order of kinetics and after 70 minutes the c...

Which of the following enhances the lathering property of soap?

An organic compound \('\mathrm{A}'\) contains nitrogen and chlorine. It dissolves readily in water to give a solution that turns litmus red. Titration of compound \('\mathrm{A}'\) with standard base indicates that the molecular weight of $$...

Low oxidation state of metals in their complexes are common when ligands :

\(\mathrm{Fe}^{3+}\) cation gives a prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of :

In neutral or alkaline solution, \(\mathrm{MnO}_{4}^{-}\) oxidises thiosulphate to :

Given below are two statements :
Statement I : For KI, molar conductivity increases steeply with dilution
Statement II : For carbonic acid, molar conductivity increases slowly with dilution
In the light of the above statements, choose the c...

Given below are two statements:
Statement I : The non bio-degradable fly ash and slag from steel industry can be used by cement industry.
Statement II : The fuel obtained from plastic waste is lead free.
In the light of the above statements...

For a real gas at \(25^{\circ} \mathrm{C}\) temperature and high pressure (99 bar) the value of compressibility factor is 2, so the value of Vander Waal's constant 'b' should be __________ \(\times 10^{-2} \mathrm{~L} \mathrm{~mol}^{-1}\) (...

Major product '\(\mathrm{B}\)' of the following reaction sequence is :

The oxidation state of manganese in the product obtained in a reaction of potassium permanganate and hydrogen peroxide in basic medium is ____________.

The plot of \(\mathrm{pH}\)-metric titration of weak base \(\mathrm{NH}_{4} \mathrm{OH}\) vs strong acid HCl looks like :

Among the following ores Bauxite, Siderite, Cuprite, Calamine, Haematite, Kaolinite, Malachite, Magnetite, Sphalerite, Limonite, Cryolite, the number of principal ores if iron is _____________.

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Boron is unable to form \(\mathrm{BF}_{6}^{3-}\).
Reason (R) : Size of B is very small.
In the light of the above sta...

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In the above reaction, \(5 \mathrm{~g}\) of toluene is converted into benzaldehyde with \(92 \%\) yield. The amount of benzaldehyde produced is ______________ \(\times 10^{-2} \mathrm{~g}\). (Nearest integer)

The normality of \(\mathrm{H}_{2} \mathrm{SO}_{4}\) in the solution obtained on mixing \(100 \mathrm{~mL}\) of \(0.1 \,\mathrm{M} \,\mathrm{H}_{2} \mathrm{SO}_{4}\) with \(50 \mathrm{~mL}\) of \(0.1 \,\mathrm{M}\, \mathrm{NaOH}\) is _______...

An element A of group 1 shows similarity to an element B belonging to group 2. If A has maximum hydration enthalpy in group 1 then B is :

When a certain amount of solid A is dissolved in \(100 \mathrm{~g}\) of water at \(25^{\circ} \mathrm{C}\) to make a dilute solution, the vapour pressure of the solution is reduced to one-half of that of pure water. The vapour pressure of p...

The correct decreasing order of energy for the orbitals having, following set of quantum numbers :
(A) n = 3, l = 0, m = 0
(B) n = 4, l = 0, m = 0
(C) n = 3, l = 1, m = 0
(D) n = 3, l = 2, m = 1
is :

Outermost electronic configurations of four elements A, B, C, D are given below :
(A) \(3 s^{2}\)
(B) \(3 s^{2} 3 p^{1}\)
(C) \(3 s^{2} 3 p^{3}\)
(D) \(3 s^{2} 3 p^{4}\)
The correct order of first ionization enthalpy for them is :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Dissolved substances can be removed from a colloidal solution by diffusion through a parchment paper.
Reason (R) : Pa...

A gas (Molar mass = 280 \(\mathrm{~g} \mathrm{~mol}^{-1}\)) was burnt in excess \(\mathrm{O}_{2}\) in a constant volume calorimeter and during combustion the temperature of calorimeter increased from \(298.0 \mathrm{~K}\) to \(298.45\) $$\m...