JEE Main 2020 (Online) 4th September Evening Slot
Paper was held on
Fri, Sep 4, 2020 9:30 AM
Chemistry
The one that can exhibit highest paramagnetic
behaviour among the following is :
gly = glycinato; bpy = 2, 2'-bipyridine
View QuestionThe Crystal Field Stabilization Energy
(CFSE) of [CoF3(H2O)3] ($$\Delta $$0 < P) is :
View QuestionThe process that is NOT endothermic in nature
is :
View QuestionThe incorrect statement(s) among (a) - (c) is
(are)
(a) W(VI) is more stable than Cr(VI).
(b) In the presence of HCl, pe
View QuestionAmong the following compounds, which one
has the shortest C – Cl bond?
View QuestionIn the following reaction sequence, [C] is :
View QuestionThe number of chiral centres present in
threonine is ________.
View QuestionA 100 mL solution was made by adding 1.43 g
of Na2CO3.xH2O. The normality of the solution
is 0.1 N. The value of x is __
View QuestionThe number of molecules with energy greater
than the threshold energy for a reaction
increases five fold by a rise of te
View QuestionConsider the following equations :
2Fe2+ + H2O2 $$ \to $$ xA + yB
(in basic medium)
2MnO4- + 6H+ + 5H2O2 $$ \to $$ x'C
View QuestionThe osmotic pressure of a solution of NaCl is
0.10 atm and that of a glucose solution is
0.20 atm. The osmotic pressure
View QuestionWhich of the following compounds will form the
precipitate with aq. AgNO3 solution most
readily?
View QuestionThe major product [R] in the following
sequence of reactions as :
View QuestionThe molecule in which hybrid MOs involve only
one d-orbital of the central atom is :
View QuestionThe major product [C] of the following reaction
sequence will be :
View QuestionThe major product [B] in the following
reactions is :
View Question250 mL of a waste solution obtained from the
workshop of a goldsmith contains 0.1 M AgNO3
and 0.1 M AuCl. The solution w
View QuestionFive moles of an ideal gas at 1 bar and 298 K
is expanded into vacuum to double the volume.
The work done is :
View QuestionThe shortest wavelength of H atom in the
Lyman series is $$\lambda $$1. The longest wavelength in
the Balmar series of H
View QuestionIf the equilibrium constant for A ⇌ B + C is $$K_{eq}^{(1)}$$ and that of
B + C ⇌ P is $$K_{eq}^{(2)}$$, the equilibrium
View QuestionThe reaction in which the hybridisation of the
underlined atom is affected is :
View QuestionMathematics
A test consists of 6 multiple choice questions, each having 4 alternative answers of which only one is correct. The numb
View QuestionIf the variance of the following frequency
distribution :
Class : 10–20
View QuestionIf the system of equations
x+y+z=2
2x+4y–z=6
3x+2y+$$\lambda $$z=$$\mu $$
has infinitely many solutions, then
View QuestionThe integral $$\int\limits_{{\pi \over 6}}^{{\pi \over 3}} {{{\tan }^3}x.{{\sin }^2}3x\left( {2{{\sec }^2}x.{{\sin }^2
View QuestionIn a game two players A and B take turns in throwing a pair of fair dice starting with player A and total of scores on t
View QuestionThe area (in sq. units) of the largest rectangle ABCD whose vertices A and B lie on the x-axis and vertices C and D lie
View QuestionThe minimum value of 2sinx + 2cosx is :
View QuestionLet $$f:\left( {0,\infty } \right) \to \left( {0,\infty } \right)$$ be a differentiable function such that f(1) = e and
View QuestionIf the perpendicular bisector of the line segment joining the points P(1 ,4) and Q(k, 3) has y-intercept equal to –4, th
View QuestionIf a and b are real numbers such that $${\left( {2 + \alpha } \right)^4} = a + b\alpha $$ where $$\alpha = {{ - 1 + i\s
View QuestionSuppose the vectors x1, x2 and x3 are the solutions of the system of linear equations, Ax = b when the vector b on the r
View QuestionIf $$\overrightarrow a = 2\widehat i + \widehat j + 2\widehat k$$, then the value of
$${\left| {\widehat i \times \lef
View QuestionLet PQ be a diameter of the circle x2 + y2 = 9. If $$\alpha $$ and $$\beta $$ are the lengths of the perpendiculars from
View QuestionLet {x} and [x] denote the fractional part of x and the greatest integer $$ \le $$ x respectively of a real number x. If
View QuestionLet a1, a2, ..., an be a given A.P. whose common difference is an integer and Sn = a1 + a2 + .... + an. If a1 = 1, an =
View QuestionLet $$\mathop \cup \limits_{i = 1}^{50} {X_i} = \mathop \cup \limits_{i = 1}^n {Y_i} = T$$ where each Xi contains 10
View QuestionLet $$\lambda \ne 0$$ be in R. If $$\alpha $$ and $$\beta $$ are the roots of the equation, x2 - x + 2$$\lambda $$ = 0
View QuestionThe solution of the differential equation
$${{dy} \over {dx}} - {{y + 3x} \over {{{\log }_e}\left( {y + 3x} \right)}} +
View QuestionThe function $$f(x) = \left\{ {\matrix{
{{\pi \over 4} + {{\tan }^{ - 1}}x,} & {\left| x \right| \le 1} \cr
View QuestionPhysics
The distance between an object and a screen is 100 cm. A lens can produce real image of the
object on the screen for two
View QuestionThe change in the magnitude of the volume of an ideal gas when a small additional pressure $$\Delta $$P is
applied at a
View QuestionOrange light of wavelength 6000 $$ \times $$ 10–10 m illuminates a single slit of width 0.6 $$ \times $$ 10–4 m. The
max
View QuestionTwo identical cylindrical vessels are kept on the ground and each contain the same liquid of density
d. The area of the
View QuestionThe value of current i1
flowing from A to C in the circuit diagram is :
View QuestionIn a photoelectric effect experiment, the graph of stopping potential V versus reciprocal of wavelength
obtained is show
View QuestionFor a uniform rectangular sheet shown in the figure, the ratio of moments of inertia about the axes
perpendicular to the
View QuestionFour resistances 40 $$\Omega $$, 60 $$\Omega $$, 90 $$\Omega $$ and 110 $$\Omega $$ make the arms of a quadrilateral ABC
View QuestionA quantity x is given by $$\left( {{{IF{v^2}} \over {W{L^4}}}} \right)$$ in terms of moment of inertia I, force F, veloc
View QuestionThe speed verses time graph for a particle is shown in the figure. The distance travelled (in m) by
the particle during
View QuestionIdentify the operation performed by the circuit given below :
View QuestionA person pushes a box on a rough horizontal plateform surface. He applies a force of 200 N over a
distance of 15 m. Ther
View QuestionA cube of metal is subjected to a hydrostatic pressure of 4 GPa. The percentage change in the
length of the side of the
View QuestionThe electric field of a plane electromagnetic wave is given by
$$\overrightarrow E = {E_0}\left( {\widehat x + \widehat
View QuestionConsider two uniform discs of the same thickness and different radii R1
= R and R2
= $$\alpha $$R made of
the same mat
View QuestionA series L-R circuit is connected to a battery of emf V. If the circuit is switched on at t = 0, then
the time at which
View QuestionMatch the thermodynamic processes taking place in a system with the correct conditions. In the
table : $$\Delta $$Q is t
View QuestionA small ball of mass m is thrown upward with velocity u from the ground. The ball experiences a
resistive force mkv2
wh
View QuestionA circular coil has moment of inertia 0.8 kg m2
around any diameter and is carrying current to
produce a magnetic momen
View QuestionA particle of charge q and mass m is subjected to an electric field E = E0
(1 – $$a$$x2) in the x-direction,
where $$a$
View QuestionFind the Binding energy per neucleon for $${}_{50}^{120}Sn$$. Mass of proton mp
= 1.00783 U, mass of neutron
mn
= 1.00
View QuestionA capacitor C is fully charged with voltage V0. After disconnecting the voltage source, it is connected
in parallel with
View QuestionA body is moving in a low circular orbit about a planet of mass M and radius R. The radius of the
orbit can be taken to
View QuestionA paramagnetic sample shows a net magnetisation of 6 A/m when it is placed in an external
magnetic field of 0.4 T at a t
View Question