JEE Main 2018 (Online) 15th April Evening Slot

The total number of optically active compounds formed in the following reactio is :

The increasing order of the acidity of the following carboxylic acids is :

The major product formed in the following reaction is :

On treatment of the following compound with a strong acid, the most susceptible site for bond cleavage is :

Two compounds I and II are eluted by column chromatography (adsorption of I > II). Which one of following is a correct statement ?

The dipeptide, Gln-Gly, on treatment with CH3COCl followed y aqueous work up gives :

Which of the following best describes the diagram below of a molecular orbital ?

At a certain temperature in a \(5\) \(L\) vessel, 2 moles of carbon monoxide and 3 moles of chlorine were allowed to reach equilibrium according to the reaction,
         CO + Cl2 \(\rightleftharpoons\) COCl2
At equilibrium, if one mole o...

For a first order reaction, A \(\to\) P, t1/2 (half-life) is 10 days The time required for \({1 \over 4}\)th conversion of A (in days) is : (ln 2 = 0.693,    ln 3 = 1.1)

The increasing order of diazotisation of the following compounds is :

The correct order of spin-only magnetic moments among the following is :
(Atomic number : Mn = 25, Co = 27, Ni = 28, Zn = 30)

The total number of possible isomers for square-planar [Pt(Cl)(NO2)(NO3)(SCN)]2- is :

Biochemical Oxygen Demand (BOD) value can be a measure of water pollution caused by the organic matter. Which of the following statements is correct ?

The major product formed in the following reaction is :

When 2-butyne is treate with H2/Lindlar's catalyst, compound X is produced as the major product and when treated with Na/liq. NH3 it produces Y as the major product Which of the following statements is correct ?

Following four solutions are prepared by mixing different volumes of NaOH and HCl of different concentrations, pH of which one of them will be equal to 1 ?

In the leaching method, bauxite ore is digested with a concentrated solution of NaOH that produces 'X'. When CO2 gas is passed through the aqueous solution of 'X', a hydrated compound 'Y' is precipitated. 'X' and 'Y' respectively are :

The number of P \(-\) O bonds in P4O6 is :

In KO2, the nature of oxygen species and the oxydation state of oxygen atom are, respectively :

In XeO3F2, the number of bond pair(s), \(\pi\)-bond(s) and lone pair(s) on Xe atom respectively are :

Lithium aluminium hydride reacts with silicon tetrachloride to form :

The correct order of electron affinity is :

Which of the following statements is not true ?

All of the following share the same crystal structure except :

Two 5 molal solutions are prepared by dissolving a non-electrolyte non-volatile solute separately in the solvents X and Y. The molecular weights of the solvents are Mx and My, respectively where Mx = \({3 \over 4}\) My. The relative lowerin...

For per gram of reactant, the maximum quantity of N2 gas is produced in which of the following thermal decomposition reactions ?
(Given : Atomic wt. - Cr = 52 u, Ba = 137 u)

The de-Broglie's wavelength of electron present in first Bohr orbit of 'H' atom is :

If x gram of gas is adsorbed by m gram of adsorbent at pressure P, the plot of log \({x \over m}\) versus log P is linear. The slope of the plot is :
(n and k are constants and n > 1)

\(\Delta\)fGo at 500 K for substance 'S' in liquid state and gaseous state are +100.7 kcl mol-1 and +103 kcal mol-1, respectively. Vapour pressure of liquid 'S' at 500 K is approximately equal to : ( R = 2 cal K-1 mol-1 )

Given
(i)   2Fe2O3(s) \(\to\) 4Fe(s) + 3O2(g);
\(\Delta\)rGo = + 1487.0 kJ mol-1
(ii)   2CO(g) + O2(g) \(\to\) 2CO2(g);
\(\Delta\)rGo = \(-\) 514.4 kJ mol-1
Free energy change, \(\Delta\)rGo for the reaction 2Fe2O3(s) + 6CO(g) $$ \...