JEE Main 2019 (Online) 10th January Evening Slot

The major product of the following reaction

Which is the most suitable reagent for the following transformation ?

The major product obtained in the following reaction is :

What will be the major product in the following mononitration reaction ?

What is the IUPAC name of the following compound ?

Which of the following tests cannot be used for identifying amino acids?

The pair that contains two P – H bonds in each of the oxoacids is

5.1 g NH4SH is introduced in 3.0 L evacuated flask at 327ºC. 30% of the solid NH4SH decomposed to NH3 and H2S as gases . The Kp of the reaction at 327oC is (R = 0.082 L atm mol–1 K–1, Molar mass of S = 32 g mol–1 molar mass of N = 14 g mol–...

For an elementary chemical reaction,

the expression for \({{d\left[ A \right]} \over {dt}}\) is

An aromatic compound 'A' having molecular formula C7H6O2 on treating with aqueous ammonia and heating forms compound 'B'. The compound 'B' on reaction with molecular bromine and potassium hydroxide provides compound 'C' having molecular for...

The major product of the following reaction is :

The difference in the number of unpaired electrons of a metal ion in its high spin and low-spin octahedral complexes is two. The metal ion is :

A reaction of cobalt (III) chloride and ethylenediamine in a 1 : 2 mole ratio generates two isomeric products A (violet coloured) and B (green coloured). A can show optical activity, but B is optically inactive. What
type of isomers does A ...

The 71st electron of an element X with an atomic number of 71 enters into the orbital :

In the cell
Pt\(\left| {\left( s \right)} \right|\)H2(g, 1 bar)\(\left| {HCl\left( {aq} \right)} \right|\)AgCl\(\left| {\left( s \right)} \right|\)Ag(s)|Pt(s)
the cell potential is 0.92 V when a 10–6 molal HCl solution is used. The stand...

The reaction that is NOT involved in the ozone layer depletion mechanism in the stratosphere is :

The electrolytes usually used in the electroplating of gold and silver, respectively are :

Among the following reactions of hydrogen with halogens, the one that requires a catalyst is :

The number of 2-centre-2-electron and 3-centre -2-electron bonds in B2H6, respectively, are :

The major product of the following reaction is

The correct match between item 'I' and item 'II' is :

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In the reaction of oxalate with permanganate in acidic medium, the number of electrons involved in producing one molecule of CO2 is :

Sodium metal on dissolution in liquid ammonia gives a deep blue solution due to the formation of :

A compound of formula A2B3 has the hcp lattice. Which atom forms the hcp lattice and what fraction of tetrahedral voids is occupied by the other atoms :

Elevation in the boiling point for 1 molar solution of glucose is 2 K. The depression in the freezing point for 2 molal solution of glucose in the same solvent is 2 K. The relation between Kb and Kf is

The amount of sugar (C12H22O11) required to prepare 2L of its 0.1 M aqueous solution is :

The ground state energy of hydrogen atom is – 13.6 eV. The energy of second excited state of He+ ion in eV is :

Haemoglobin and gold sol are examples of :

The process with negative entropy change is :

An ideal gas undergoes isothermal compression from 5m3 to 1 m3 against a constant external pressure of 4 Nm–2. Heat released in this process is used to increase the temperature of 1 mole of Al. If molar heat capacity of Al is 24 J mol–1 K–...