JEE Main 2022 (Online) 28th June Evening Shift

The major product (P) of the given reaction is
(where, Me is \(-\)CH3)

Isobutyraldehyde on reaction with formaldehyde and K2CO3 gives compound 'A'. Compound 'A' reacts with KCN and yields compound 'B', which on hydrolysis gives a stable compound 'C'. The compound 'C' is

The correct IUPAC name of the following compound is :

When sugar 'X' is boiled with dilute H2SO4 in alcoholic solution, two isomers 'A' and 'B' are formed. 'A' on oxidation with HNO3 yields saccharic acid where as 'B' is laevorotatory. The compound 'X' is :

In the structure of SF4, the lone pair of electrons on S is in.

A radioactive element has a half life of 200 days. The percentage of original activity remaining after 83 days is ___________. (Nearest integer)
(Given : antilog 0.125 = 1.333, antilog 0.693 = 4.93)

The drug tegamet is :

With respect to the following reaction, consider the given statements :

(A) o-Nitroaniline and p-nitroaniline are the predominant products.
(B) p-Nitroaniline and m-nitroaniline are the predominant products.
(C) HNO3 acts as an acid.
(D) ...

\({[Fe{(CN)_6}]^{4 - }}\)
\({[Fe{(CN)_6}]^{3 - }}\)
\({[Ti{(CN)_6}]^{3 - }}\)
\({[Ni{(CN)_4}]^{2 - }}\)
\({[Co{(CN)_6}]^{3 - }}\)
Among the given complexes, number of paramagnetic complexes is ____________.

(a) CoCl3.4NH3,    (b) CoCl3.5NH3,      (c) CoCl3.6NH3    and    (d) CoCl(NO3)2.5NH3.
Number of complex(es) which will exist in cis-trans form is/are _______________.

For the given reactions
Sn2+ + 2e\(-\) \(\to\) Sn
Sn4+ + 4e\(-\) \(\to\) Sn
the electrode potentials are ; \(E_{S{n^{2 + }}/Sn}^o = - 0.140\) V and \(E_{S{n^{4 + }}/Sn}^o = + 0.010\) V. The magnitude of standard electrode potential for $$...

Correct statement about photo-chemical smog is :

100 g of an ideal gas is kept in a cylinder of 416 L volume at 27\(^\circ\)C under 1.5 bar pressure. The molar mass of the gas is __________ g mol\(-\)1. (Nearest integer)
(Given : R = 0.083 L bar K\(-\)1 mol\(-\)1)

In the above reaction 'A' is

The major product of the following reaction contains ____________ bromine atom(s).

Hydrogen has three isotopes : protium (1H), deuterium (2H or D) and tritium (3H or T). They have nearly same chemical properties but different physical properties. They differ in :

A student needs to prepare a buffer solution of propanoic acid and its sodium salt with pH 4. The ratio of \({{[C{H_3}C{H_2}CO{O^ - }]} \over {[C{H_3}C{H_2}COOH]}}\) required to make buffer is ___________.
Given : $${K_a}(C{H_3}C{H_2}COOH) ...

In the metallurgical extraction of copper, following reaction is used :
FeO + SiO2 \(\to\) FeSiO3
FeO and FeSiO3 respectively are.

Among the given oxides of nitrogen ; N2O, N2O3, N2O4 and N2O5, the number of compound/(s) having N - N bond is :

Which of the following oxoacids of sulphur contains "S" in two different oxidation states?

Match List - I with List - II :

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Among the following, basic oxide is :

Given below are two statements, one is Assertion (A) and other is Reason (R).
Assertion (A) : Natural rubber is a linear polymer of isoprene called cis-polyisoprene with elastic properties.
Reason (R) : The cis-polyisoprene molecules consis...

0.01 M KMnO4 solution was added to 20.0 mL of 0.05 M Mohr's salt solution through a burette. The initial reading of 50 mL burette is zero. The volume of KMnO4 solution left in the burette after the end point is _____________ mL. (nearest in...

2.5 g of protein containing only glycine (C2H5NO2) is dissolved in water to make 500 mL of solution. The osmotic pressure of this solution at 300 K is found to be 5.03 \(\times\) 10\(-\)3 bar. The total number of glycine units present in th...

Compound A contains 8.7% Hydrogen, 74% Carbon and 17.3% Nitrogen. The molecular formula of the compound is,
Given : Atomic masses of C, H and N are 12, 1 and 14 amu respectively.
The molar mass of the compound A is 162 g mol\(-\)1.

The complete combustion of 0.492 g of an organic compound containing 'C', 'H' and 'O' gives 0.793 g of CO2 and 0.442 g of H2O. The percentage of oxygen composition in the organic compound is ______________. (nearest integer)

Consider the following statements :
(A) The principal quantum number 'n' is a positive integer with values of 'n' = 1, 2, 3, ...
(B) The azimuthal quantum number 'l' for a given 'n' (principal quantum number) can have values as 'l' = 0, 1, ...

Match List - I with List - II :

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overflow:hidden;padding:10px 5px;word-break:nor...

For combustion of one mole of magnesium in an open container at 300 K and 1 bar pressure, \(\Delta\)CH\(\Theta\) = \(-\)601.70 kJ mol\(-\)1, the magnitude of change in internal energy for the reaction is __________ kJ. (Nearest integer)
(G...