JEE Advanced 2021 Paper 1 Online

Paper was held on
Sat, Oct 2, 2021 9:00 PM

## Chemistry

The major product formed in the following reaction of

View Question Among the following, the conformation that corresponds to the most stable conformation of meso-butane-2,3-diol is

View Question For the given close packed structure of a salt made of cation X and anion Y shown below (ions of only one face are shown

View Question The calculated spin only magnetic moments of [
Cr(NH3)6]3+ and [CuF6]3$$-$$ in BM, respectively, are(Atomic numbers of C

View Question For the following reaction scheme, percentage yields are given along the arrow:x g and y g are mass of R and U, respecti

View Question The value of y is ________.

View Question The value of standard enthalpy, $$\Delta$$Ho (in kJ mol$$-$$1) for the given reaction is _______.

View Question The value of $$\Delta$$S$$\theta$$ (in J K$$-$$1 mol$$-$$1) for the given reaction, at 1000 K is _________.

View Question The value of x is ________.

View Question The value of | y | is ________.

View Question Given : The compound(s), which on reaction with HNO3 will give the product having degree of rotation, [$$\alpha$$]D = $$

View Question The reaction of Q with PhSNa yields an organic compound (major product) that gives positive Carius test on treatment wit

View Question The correct statement(s) related to colloids is (are)

View Question An ideal gas undergoes a reversible isothermal expansion from state I to state II followed by a reversible adiabatic exp

View Question The correct statement(s) related to the metal extraction processes is (are) :

View Question A mixture of two salts is used to prepare a solution S, which gives the following results :The correct option(s) for the

View Question The maximum number of possible isomers (including stereoisomers) which may be formed on mono-bromination of 1-methylcycl

View Question In the reaction given below, the total number of atoms having sp2 hybridization in the major product P is _________.

View Question The total number of possible isomers for [Pt(NH3)4Cl2]Br2 is ______.

View Question ## Mathematics

Consider a triangle $$\Delta$$ whose two sides lie on the x-axis and the line x + y + 1 = 0. If the orthocenter of $$\De

View Question The area of the region $$\left\{ {\matrix{
{(x,y):0 \le x \le {9 \over 4},} & {0 \le y \le 1,} & {x \ge 3y,}

View Question Consider three sets E1 = {1, 2, 3}, F1 = {1, 3, 4} and G1 = {2, 3, 4, 5}. Two elements are chosen at random, without rep

View Question Let $\theta_1, \theta_2, \ldots, \theta_{10}$ be positive valued angles (in radian) such that $\theta_1+\theta_2+\cdots+

View Question Three numbers are chosen at random, one after another with replacement, from the set S = {1, 2, 3, ......, 100}. Let p1

View Question Three numbers are chosen at random, one after another with replacement, from the set S = {1, 2, 3, ......, 100}. Let p1

View Question Let $$\alpha$$, $$\beta$$ and $$\gamma$$ be real numbers such that the system of linear equationsx + 2y + 3z = $$\alpha$

View Question Let $$\alpha$$, $$\beta$$ and $$\gamma$$ be real numbers such that the system of linear equationsx + 2y + 3z = $$\alpha$

View Question Consider the lines L1 and L2 defined by $${L_1}:x\sqrt 2 + y - 1 = 0$$ and $${L_2}:x\sqrt 2 - y + 1 = 0$$For a fixed c

View Question Consider the lines L1 and L2 defined by $${L_1}:x\sqrt 2 + y - 1 = 0$$ and $${L_2}:x\sqrt 2 - y + 1 = 0$$For a fixed c

View Question For any 3 $$\times$$ 3 matrix M, let | M | denote the determinant of M. Let$$E = \left[ {\matrix{
1 & 2 & 3

View Question Let f : R $$\to$$ R be defined by $$f(x) = {{{x^2} - 3x - 6} \over {{x^2} + 2x + 4}}$$Then which of the following statem

View Question Let E, F and G be three events having probabilities $$P(E) = {1 \over 8}$$, $$P(F) = {1 \over 6}$$ and $$P(G) = {1 \over

View Question For any 3 $$\times$$ 3 matrix M, let |M| denote the determinant of M. Let I be the 3 $$\times$$ 3 identity matrix. Let E

View Question For any positive integer n, let Sn : (0, $$\infty$$) $$\to$$ R be defined by $${S_n}(x) = \sum\nolimits_{k = 1}^n {{{\co

View Question For any complex number w = c + id, let $$\arg (w) \in ( - \pi ,\pi ]$$, where $$i = \sqrt { - 1} $$. Let $$\alpha$$ and

View Question For x $$\in$$ R, the number of real roots of the equation $$3{x^2} - 4\left| {{x^2} - 1} \right| + x - 1 = 0$$ is ______

View Question In a triangle ABC, let AB = $$\sqrt {23} $$, BC = 3 and CA = 4. Then the value of $${{\cot A + \cot C} \over {\cot B}}$$

View Question Let $$\overrightarrow u $$, $$\overrightarrow v $$ and $$\overrightarrow w $$ be vectors in three-dimensional space, whe

View Question ## Physics

The smallest division on the main scale of a Vernier calipers is 0.1 cm. Ten divisions of the Vernier scale correspond t

View Question An ideal gas undergoes a four step cycle as shown in the P-V diagram below. During this cycle, heat is absorbed by the g

View Question An extended object is placed at point O, 10 cm in front of a convex lens L1 and a concave lens L2 is placed 10 cm behind

View Question A heavy nucleus Q of half-life 20 minutes undergoes alpha-decay with probability of 60% and beta-decay with probability

View Question A projectile is thrown from a point O on the ground at an angle 45$$^\circ$$ from the vertical and with a speed 5$$\sqrt

View Question A projectile is thrown from a point O on the ground at an angle 45$$^\circ$$ from the vertical and with a speed 5$$\sqrt

View Question In the circuit shown below, the switch S is connected to position P for a long time so that the charge on the capacitor

View Question In the circuit shown below, the switch S is connected to position P for a long time so that the charge on the capacitor

View Question Two point charges $$-$$Q and +Q/$$\sqrt 3 $$ are placed in the xy-plane at the origin (0, 0) and a point (2, 0), respect

View Question Two point charges $$-$$Q and +Q/$$\sqrt 3 $$ are placed in the xy-plane at the origin (0, 0) and a point (2, 0), respect

View Question A horizontal force F is applied at the center of mass of a cylindrical object of mass m and radius R, perpendicular to i

View Question A wide slab consisting of two media of refractive indices n1 and n2 is placed in air as shown in the figure. A ray of li

View Question A particle of mass M = 0.2 kg is initially at rest in the xy-plane at a point (x = $$-$$l, y = $$-$$h), where l = 10 m a

View Question Which of the following statement(s) is(are) correct about the spectrum of the hydrogen atom?

View Question A long straight wire carries a current, I = 2 ampere. A semi-circular conducting rod is placed beside it on two conducti

View Question A cylindrical tube, with its base as shown in the figure, is filled with water. It is moving down with a constant accele

View Question An $$\alpha$$-particle (mass 4 amu) and a singly charged sulphur ion (mass 32 amu) are initially at rest. They are accel

View Question A thin rod of mass M and length a is free to rotate in horizontal plane about a fixed vertical axis passing through poin

View Question A small object is placed at the center of a large evacuated hollow spherical container. Assume that the container is mai

View Question