JEE Main 2019 (Online) 12th April Morning Slot

The major product of the following reaction is :

The major products of the following reaction are :

The major product(s) obtained in the following reaction is/are :

The increasing order of the pKb of the following compound is :

Which of the following statements is not true about RNA?

Glucose and Galactose are having identical configuration in all the positions except position

The correct statement among the following is :

In the following reaction; xA \(\to\) yB
\({\log _{10}}\left[ { - {{d\left[ A \right]} \over {dt}}} \right] = {\log _{10}}\left[ {{{d\left[ B \right]} \over {dt}}} \right] + 0.3010\)
'A' and 'B' respectively can be :

Complete removal of both the axial ligands (along the z-axis) from an octahedral complex leads to which of
the following splitting patterns? (relative orbital energies not on scale).

The complex ion that will lose its crystal field stabilization energy upon oxidation of its metal to +3 state is :

Given
CO3+ + e– \(\to\) CO2+ ; Eo = + 1.81 V
Pb4+
+ 2e– \(\to\) Pb2+ ; Eo = + 1.67 V
Ce4+
+ e– \(\to\) Ce3+
; Eo = + 1.61 V
Bi3+ + 3e– \(\to\) Bi ; Eo = + 0.20 V
Oxidizing power of the species will increase in the order :

The correct set of species responsible for the photochemical smog is :

The major product of the following addition reaction is :
H3C–CH=CH2 \(\buildrel {C{l_2}/{H_2}O} \over \longrightarrow\)

But-2-ene on reaction with alkaline KMnO4 at elevated temperature followed by acidification will give :

The metal that gives hydrogen gas upon treatment with both acid as well as base is :

What is the molar solubility of Al(OH)3 in 0.2 M NaOH solution ? Given that, solubility product of Al(OH)3 = 2.4 × 10–24
:

The idea of froth floatation method came from a person X and this method is related to the process Y of ores. X and Y, respectively, are :

The basic structural unit of feldspar, zeolites, mica, and asbestos is :

Which of the following is a thermosetting polymer?

An organic compound 'A' is oxidizod with Na2O2 followed by boiling with HNO3. The resultant solution is
then treated with ammonium molybdate to yield a yellow precipitate.
Based on above observation, the
element present in the given compou...

An example of a disproportionation reaction is :

The correct sequence of thermal stability of the following carbonates is :

An element has a face-centred cubic (fcc) structure with a cell edge of \(a\). The distance between the centres of
two nearest tetrahedral voids in the lattice is :

5 moles of AB2 weigh 125 × 10–3
kg and 10 moles of A2B2 weigh 300 × 10–3
kg. The molar mass of A (MA)
and molar mass of B (MB) in kg mol are:

The mole fraction of a solvent in aqueous solution of a solute is 0.8. The molality (in mol kg–1
) of the
aqueous solution is :

The electrons are more likely to be found :

The group number, number of valence electrons, and valency of an element with atomic number 15,
respectively, are:

Peptization is a :

Enthalpy of sublimation of iodine is 24 cal g–1
at 200 oC. If specific heat of I2(s) and l2 (vap) are 0.055 and
0.031 cal g–1K
–1
respectively, then enthalpy of sublimation of iodine at 250 oC in cal g–1
is :

An ideal gas is allowed to expand form 1 L to 10 L against a constant external pressure of I bar. The work
done in kJ is :

If the line \({{x - 2} \over 3} = {{y + 1} \over 2} = {{z - 1} \over { - 1}}\)
intersects the plane 2x + 3y – z + 13 = 0 at a point P and the plane
3x + y + 4z = 16 at a point Q, then PQ is equal to :

A 2 m ladder leans against a vertical wall. If the top of the ladder begins to slide down the wall at the rate
25 cm/sec, then the rate (in cm/sec.) at which the bottom of the ladder slides away from the wall on the
horizontal ground when t...

If m is the minimum value of k for which the function f(x) = x\(\sqrt {kx - {x^2}}\) is increasing in the interval [0,3]
and M is the maximum value of f in [0, 3] when k = m, then the ordered pair (m, M) is equal to :

If the area (in sq. units) of the region {(x, y) : y2
\(\le\) 4x, x + y \(\le\) 1, x \(\ge\) 0, y \(\ge\) 0} is a \(\sqrt 2\) + b, then a – b is equal
to :

The coefficient of x18 in the product
(1 + x) (1 – x)10 (1 + x + x2)9
is :

If the angle of intersection at a point where the two circles with radii 5 cm and 12 cm intersect is 90o, then
the length (in cm) of their common chord is :

The equation |z – i| = |z – 1|, i = \(\sqrt { - 1}\), represents :

If \(\int\limits_0^{{\pi \over 2}} {{{\cot x} \over {\cot x + \cos ecx}}} dx\) = m(\(\pi\) + n), then m.n is equal to

Let f : R \(\to\) R be a continuously differentiable function such that f(2) = 6 and f'(2) = \({1 \over {48}}\). If \(\int\limits_6^{f\left( x \right)} {4{t^3}} dt\) = (x - 2)g(x), then $$\mathop {\lim }\limits_{x \to 2} g\left( x \right)...

Consider the differential equation, \({y^2}dx + \left( {x - {1 \over y}} \right)dy = 0\), If value of y is 1 when x = 1, then the value of x
for which y = 2, is :

If ey
+ xy = e, the ordered pair \(\left( {{{dy} \over {dx}},{{{d^2}y} \over {d{x^2}}}} \right)\) at x = 0 is equal to :

If the normal to the ellipse 3x2
+ 4y2
= 12 at a point P on it is parallel to the line, 2x + y = 4 and the tangent
to the ellipse at P passes through Q(4,4) then PQ is equal to :

For x \(\in\) (0, 3/2), let f(x) = \(\sqrt x\) , g(x) = tan x and h(x) = \({{1 - {x^2}} \over {1 + {x^2}}}\). If \(\phi\) (x) = ((hof)og)(x), then \(\phi \left( {{\pi \over 3}} \right)\)
is equal to :

The integral \(\int {{{2{x^3} - 1} \over {{x^4} + x}}} dx\) is equal to :
(Here C is a constant of integration)

The value of \({\sin ^{ - 1}}\left( {{{12} \over {13}}} \right) - {\sin ^{ - 1}}\left( {{3 \over 5}} \right)\) is equal to :

If \(\alpha\) and \(\beta\) are the roots of the equation 375x2
– 25x – 2 = 0, then $$\mathop {\lim }\limits_{n \to \infty } \sum\limits_{r = 1}^n {{\alpha ^r}} + \mathop {\lim }\limits_{n \to \infty } \sum\limits_{r = 1}^n {{\beta ^r}} ...

If the truth value of the statement p \(\to\) (~q \(\vee\) r) is false (F), then the truth values of the statements p, q, r are
respectively :

If \(B = \left[ {\matrix{ 5 & {2\alpha } & 1 \cr 0 & 2 & 1 \cr \alpha & 3 & { - 1} \cr } } \right]\) is the inverse of a 3 × 3 matrix A, then the sum of all values of \(\alpha\) for which
det(A) + 1 = 0, is :

If A is a symmetric matrix and B is a skew-symmetric matrix such that A + B = \(\left[ {\matrix{ 2 & 3 \cr 5 & { - 1} \cr } } \right]\), then AB is equal
to :

Let P be the point of intersection of the common tangents to the parabola y2
= 12x and the hyperbola
8x2
– y2
= 8. If S and S' denote the foci of the hyperbola where S lies on the positive x-axis then P divides SS'
in a ratio :