JEE Main 2020 (Online) 6th September Morning Slot
Paper was held on Sun, Sep 6, 2020 3:30 AM
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Chemistry

The increasing order of pKb values of the following compounds is :
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A solution of two components containing n1 moles of the 1st component and n2 moles of the 2nd component is prepared. M1
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For the reaction Fe2N(s) + $${3 \over 2}$$H2(g) ⇌ 2Fe(s) + NH3(g)
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Arrange the following solutions in the decreasing order of pOH : (A) 0.01 M HCl (B) 0.01 M NaOH (C) 0.01 M CH3COONa (D)
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The species that has a spin-only magnetic moment of 5.9 BM, is : (Td = tetrahedral)
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The major product of the following reaction is :
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The major products of the following reaction are :
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The lanthanoid that does NOT show +4 oxidation state is :
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Which of the following compounds shows geometrical isomerism?
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The major product obtained from the following reaction is :
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The correct statement with respect to dinitrogen is :
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Consider the following reactions A $$ \to $$ P1 ; B $$ \to $$ P2 ; C $$ \to $$ P3 ; D $$ \to $$ P4, The order of the abo
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The variation of equilibrium constant with temperature is given below : .tg {border-collapse:collapse;border-spacing:0
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Consider the following reactions 'A' is :
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The set that contains atomic numbers of only transition elements, is :
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In an estimation of bromine by Carius method, 1.6 g of an organic compound gave 1.88 g of AgBr. The mass percentage of b
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The number of Cl = O bonds in perchloric acid is, "________".
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Potassium chlorate is prepared by the electrolysis of KCl in basic solution 6OH- + Cl- $$ \to $$ ClO3- + 3H2O + 6e- If o
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The elevation of boiling point of 0.10 m aqueous CrCl3.xNH3 solution is two times that of 0.05 m aqueous CaCl2 solution.
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Mathematics

The region represented by {z = x + iy $$ \in $$ C : |z| – Re(z) $$ \le $$ 1} is also given by the inequality : {z = x +
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The general solution of the differential equation $$\sqrt {1 + {x^2} + {y^2} + {x^2}{y^2}} $$ + xy$${{dy} \over {dx}}$$
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The area (in sq. units) of the region A = {(x, y) : |x| + |y| $$ \le $$ 1, 2y2 $$ \ge $$ |x|}
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Let a , b, c , d and p be any non zero distinct real numbers such that (a2 + b2 + c2)p2 – 2(ab + bc + cd)p + (b2 + c2 +
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Two families with three members each and one family with four members are to be seated in a row. In how many ways can th
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Let m and M be respectively the minimum and maximum values of $$\left| {\matrix{ {{{\cos }^2}x} & {1 + {{\sin }^2
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The values of $$\lambda $$ and $$\mu $$ for which the system of linear equations x + y + z = 2 x + 2y + 3z = 5 x + 3y +
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A ray of light coming from the point (2, $$2\sqrt 3 $$) is incident at an angle 30o on the line x = 1 at the point A. Th
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Out of 11 consecutive natural numbers if three numbers are selected at random (without repetition), then the probability
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If f(x + y) = f(x)f(y) and $$\sum\limits_{x = 1}^\infty {f\left( x \right)} = 2$$ , x, y $$ \in $$ N, where N is the s
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If {p} denotes the fractional part of the number p, then $$\left\{ {{{{3^{200}}} \over 8}} \right\}$$, is equal to :
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$$\mathop {\lim }\limits_{x \to 1} \left( {{{\int\limits_0^{{{\left( {x - 1} \right)}^2}} {t\cos \left( {{t^2}} \right)d
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If $$\sum\limits_{i = 1}^n {\left( {{x_i} - a} \right)} = n$$ and $$\sum\limits_{i = 1}^n {{{\left( {{x_i} - a} \right)
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If $$\alpha $$ and $$\beta $$ be two roots of the equation x2 – 64x + 256 = 0. Then the value of $${\left( {{{{\alpha ^3
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The position of a moving car at time t is given by f(t) = at2 + bt + c, t > 0, where a, b and c are real numbers grea
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If I1 = $$\int\limits_0^1 {{{\left( {1 - {x^{50}}} \right)}^{100}}} dx$$ and I2 = $$\int\limits_0^1 {{{\left( {1 - {x^{5
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If $$\overrightarrow a $$ and $$\overrightarrow b $$ are unit vectors, then the greatest value of $$\sqrt 3 \left| {\ove
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Let f : R $$ \to $$ R be defined as $$f\left( x \right) = \left\{ {\matrix{ {{x^5}\sin \left( {{1 \over x}} \right) +
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Set A has m elements and set B has n elements. If the total number of subsets of A is 112 more than the total number of
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Physics

An electron, a doubly ionized helium ion (He++) and a proton are having the same kinetic energy. The relation between th
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A screw gauge has 50 divisions on its circular scale. The circular scale is 4 units ahead of the pitch scale marking, pr
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Four point masses, each of mass m, are fixed at the corners of a square of side $$l$$. The square is rotating with angul
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For the given input voltage waveform Vin(t), the output voltage waveform V0(t), across the capacitor is correctly depict
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A satellite is in an elliptical orbit around a planet P. It is observed that the velocity of the satellite when it is fa
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If the potential energy between two molecules is given by U = $$ - {A \over {{r^6}}} + {B \over {{r^{12}}}}$$, then at e
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You are given that Mass of $${}_3^7Li$$ = 7.0160u, Mass of $${}_2^4He$$ = 4.0026u and Mass of $${}_1^1H$$ = 1.0079u. Whe
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Shown in the figure is a hollow icecream cone (it is open at the top). If its mass is M, radius of its top, R and height
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An electron is moving along +x direction with a velocity of 6 $$ \times $$ 106 ms–1. It enters a region of uniform elec
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Identify the correct output signal Y in the given combination of gates (as shown) for the given inputs A and B.
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A clock has a continuously moving second's hand of 0.1 m length. The average acceleration of the tip of the hand (in uni
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In the figure below, P and Q are two equally intense coherent sources emitting radiation of wavelength 20 m. The separat
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An insect is at the bottom of a hemispherical ditch of radius 1 m. It crawls up the ditch but starts slipping after it i
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A point like object is placed at a distance of 1 m in front of a convex lens of focal length 0.5 m. A plane mirror is pl
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An object of mass m is suspended at the end of a massless wire of length L and area of crosssection A. Young modulus of
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Molecules of an ideal gas are known to have three translational degrees of freedom and two rotational degrees of freedom
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Two bodies of the same mass are moving with the same speed, but in different directions in a plane. They have a complete
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A particle of charge q and mass m is moving with a velocity $$ - v\widehat i$$ (v $$ \ne $$ 0) towards a large screen pl
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Charges Q1 and Q2 are at points A and B of a right angle triangle OAB (see figure). The resultant electric field at po
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Suppose that intensity of a laser is $${{315} \over \pi }$$ W/m2. The rms electric field, in units of V/m associated wit
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The density of a solid metal sphere is determined by measuring its mass and its diameter. The maximum error in the densi
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Initially a gas of diatomic molecules is contained in a cylinder of volume V1 at a pressure P1 and temperature 250 K.
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A part of a complete circuit is shown in the figure. At some instant, the value of current I is 1A and it is decreasing
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