JEE Main 2019 (Online) 12th January Evening Slot

The aldehydes which will not form Grignard product with one equivalent Grignard reagents are -

The major product of the following reaction is –

The correct structure of histidine in a strongly acidic solution (pH = 2) is -

The correct statement (s) among I to III with respect to potassium ions that are abundant within the cell fluid
is /are
I. They activate many enzymes
II. They participate in the oxidation of glucose to produce ATP
III. Along with sodium ...

For a reaction consider the plot of \(\ell\)n k versus 1/T given in the figure. If the rate constant of this reaction at 400 K is 10–5 s–1, then the rate constant at 500 K is –

The increasing order of the reactivity of the following with LiAlH4 is

The major product of the following reaction is –

The magnetic moment of an octahedral homoleptic Mn(II) complex is 5.9 BM. The suitable ligand for this complex is -

The correct order of atomic radii is :

\(\wedge _m^ \circ\) for NaCl, HCl and NaA are 126.4, 425.9 and 100.5 S cm2 mol–1, respectively. If the conductivity of 0.001 M HA is-
5 \(\times\) 10–5 S cm–1, degree of dissociation of HA is -

The compound that is NOT a common component of photochemical smog is :

An open vessel at 27oC is heated until two fifth of the air (assumed as an ideal gas) it has escaped from the vessel assuming that the volume of the vessel remains constant, the temperature at which the vessel has been
heated is -

The major product in the following conversion is –

The major product of the following reaction is –

The major product of the following reaction is :

The major product of the following reaction is –

The volume strength of 1M H2O2 is : (Molar mass of H2O2 = 34 g mol–1)

If Ksp of Ag2CO3 is 8 \(\times\) 10–12, the molar solubility of Ag2CO3 in 0.1 M AgNO3 is -

The pair that does NOT require calcination is -

The element that shows greater ability to form p\(\pi\)-p\(\pi\) multiple bonds, is :

The element that does NOT show catenation is :

Chlorine on reaction with hot and concentrated sodium hydroxide give :

The two monomers for the synthesis of Nylon 6, 6 are

Molecules of benzoic acid (C6H5COOH) dimerise in benzene. 'w' g of the acid dissolved in 30 g of benzene shows a depression in freezing point equal to 2K. If the percentage association of the acid to form dimmer in the solution is 80, then ...

8 g of NaOH is dissolved in 18g of H2O. Mole fraction of NaOH in solution and molality (in mol kg–1) of the solution respectively are -

If the de Broglie wavelength of the electron in nth Bohr orbit in a hydrogenic atom is equal to 1.5 \(\pi\)a0 (a0 is Bohr radius), then the value of n/z is -

The upper stratosphere consisting of the ozone layer protects us from sun's radiation that falls in the wavelength region of -

Among the following the false statement is -

Given
(i)  C (graphite) + O2(g) \(\to\) CO2(g); \(\Delta\)rH\(^\Theta\) = x kJ mol\(-\)1
(ii)  C(graphite) + \({1 \over 2}\)O2(g) \(\to\) CO(g); \(\Delta\)rH\(^\Theta\) = y kJ mol\(-\)1
(iii)  CO(g) + \({1 \over 2}\) O2(g) $$ \to $...

The combination of plots which does not represent isothermal expansion of an ideal gas is –