New chat PYQ Library Doubts Rank report

Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →

2018 · 16 Apr · Shift 1

74 questions · JEE Main

Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.

PYQ Library
JEE Main
Papers
2018 · 16 Apr · Shift 1

2018 · 16 Apr · Shift 1

74 questions · JEE Main

Chemistry24 questions Mathematics23 questions Physics27 questions

Practical Organic ChemistryChemistry · 2 questions Haloalkanes and HaloarenesChemistry · 2 questions Aldehydes Ketones and Carboxylic AcidsChemistry · 3 questions HydrocarbonsChemistry · 1 questions Compounds Containing NitrogenChemistry · 1 questions Chemical Kinetics and Nuclear ChemistryChemistry · 1 questions ThermodynamicsChemistry · 2 questions ElectrochemistryChemistry · 1 questions Some Basic Concepts of ChemistryChemistry · 1 questions Chemical EquilibriumChemistry · 1 questions Chemical Bonding and Molecular StructureChemistry · 2 questions BiomoleculesChemistry · 1 questions D and F Block ElementsChemistry · 2 questions Coordination CompoundsChemistry · 2 questions SolutionsChemistry · 1 questions Structure of AtomChemistry · 1 questions Matrices and DeterminantsMathematics · 2 questions Definite IntegrationMathematics · 1 questions Indefinite IntegralsMathematics · 1 questions DifferentiationMathematics · 1 questions Limits Continuity and DifferentiabilityMathematics · 2 questions Application of DerivativesMathematics · 1 questions Sequences and SeriesMathematics · 1 questions Permutations and CombinationsMathematics · 1 questions Area Under the CurvesMathematics · 1 questions Sets and RelationsMathematics · 1 questions Quadratic Equation and InequalitiesMathematics · 2 questions Complex NumbersMathematics · 1 questions ProbabilityMathematics · 2 questions StatisticsMathematics · 1 questions Vector AlgebraMathematics · 1 questions 3D GeometryMathematics · 1 questions EllipseMathematics · 1 questions CircleMathematics · 1 questions HyperbolaMathematics · 1 questions Current ElectricityPhysics · 3 questions Dual Nature of RadiationPhysics · 2 questions Wave OpticsPhysics · 1 questions Geometrical OpticsPhysics · 1 questions MagneticsPhysics · 1 questions Electromagnetic InductionPhysics · 1 questions Electromagnetic WavesPhysics · 1 questions Alternating CurrentPhysics · 1 questions ElectrostaticsPhysics · 1 questions WavesPhysics · 1 questions Heat and ThermodynamicsPhysics · 2 questions Simple Harmonic MotionPhysics · 2 questions Properties of MatterPhysics · 1 questions Units and MeasurementsPhysics · 2 questions GravitationPhysics · 1 questions Work Power and EnergyPhysics · 2 questions Vector AlgebraPhysics · 1 questions CapacitorPhysics · 1 questions Rotational MotionPhysics · 1 questions Electronic DevicesPhysics · 1 questions

Q1.In a complexometric titration of metal ion with ligand M(Metal ion) + L(Ligand) $\to$ C(Complex) end point is estimated spectrophoto - metrically (through light absorption). If 'M' and 'C' do not absorb light and only 'L' absorbs, then the…
Chemistry · Practical Organic Chemistry · MCQ
Q2.The major product of the following reaction is : Includes diagram
Chemistry · Haloalkanes and Haloarenes · MCQ
Q3.The most polar compound among the following is :
Chemistry · Haloalkanes and Haloarenes · MCQ
Q4.The major product B formed in the following reaction sequence is : Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q5.The major product of the following reaction is : Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q6.The major product of the following reaction is : Includes diagram
Chemistry · Hydrocarbons · MCQ
Q7.Products A and B formed in the following reactions are respectively : Includes diagram
Chemistry · Compounds Containing Nitrogen · MCQ
Q8.If 50% of a reaction occurs in 100 second and 75% of the reaction occurs in 200 secod, the order of this reaction is :
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q9.For which of the following processes, $Δ$ S is negative ?
Chemistry · Thermodynamics · MCQ
Q10.When 9.65 ampere current was passed for 1.0 hour into nitrobenzene in acidic medium, the amount of p-aminophenol produced is :
Chemistry · Electrochemistry · MCQ
Q11.An unknown chlorohydrocarbon has 3.55% of chlorine. If each molecule of the hydrocarbon has one chlorine atom only; chlorine atoms present in 1 g of chlorohydrocarbon are : (Atomic wt. of Cl = 35.5 u; Avogadro constant = 6.023 $\times$ …
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q12.The gas phase reaction 2 $N O_{2}$ (g) $\to$ $N_{2} O_{4}$ (g) is an exothermic reaction. The decomposition of $N_{2} O_{4}$ , in equilibrium mixture of $N O_{2}$ (g) and $N_{2} O_{4}$ (g), can be increased by :
Chemistry · Chemical Equilibrium · MCQ
Q13.Which of the following compounds will most readily be dehydrated to give alkene under acidic condition ?
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q14.The incorrect geometry is represented by :
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q15.Among the following, the incorrect statement is :
Chemistry · Biomolecules · MCQ
Q16.For standardizing NaOH solution, which of the following is used as a primary standard ?
Chemistry · Practical Organic Chemistry · MCQ
Q17.When $X O_{2}$ is fused with an alkali metal hydroxide in presence of an oxidizing agent such as $K N O_{3}$ ; a dark green product is formed which disproportioates in acidic solution to afforda dark purple solution. X is :
Chemistry · D and F Block Elements · MCQ
Q18.Which of the following conversions involves change in both shape and hybridisation ?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q19.Which of the following complexes will shows geometrical isomerism ?
Chemistry · Coordination Compounds · MCQ
Q20.In Wilkinson's catalyst, the hybridization of central metal ion and its shape are respectively :
Chemistry · Coordination Compounds · MCQ
Q21.The mass of a non-volatile, non-electrolyte solute (molar mass = 50 g mol-1 ) needed to be dissolved in 114 g octane to reduce its vapour pressure to 75%, is :
Chemistry · Solutions · MCQ
Q22.The incorrect statement is :
Chemistry · D and F Block Elements · MCQ
Q23.At 320 K, a gas $A_{2}$ is 20% dissociated to A(g). The standard free energy change at 320 K and 1 atm in J mol-1 is approximately : (R = 8.314 JK-1 mol-1; ln2 = 0.693; ln 3 = 1.098)
Chemistry · Thermodynamics · MCQ
Q24.Which of the following statements is false ?
Chemistry · Structure of Atom · MCQ
Q25.Let A = $111011001$ and B = A20. Then the sum of the elements of the first column of B is :
Mathematics · Matrices and Determinants · MCQ
Q26.If $f (x) = 0 \int x t (sin x - sin t) d t$ then :
Mathematics · Definite Integration · MCQ
Q27.If $\int \frac{t a n x}{1 + t a n x + t a n ^{2} x} d x = x - \frac{K}{A} tan^{- 1} (\frac{K t a n x + 1}{A}) + C, (C$ is a constant of integration) then the ordered pair (K, A) is equal to :
Mathematics · Indefinite Integrals · MCQ
Q28.If $x = 2^{c o s e c^{- 1}}$ and $y = 2^{se c^{- 1} t} (∣ t ∣ \geq 1),$ then $\frac{d y}{d x}$ is equal to :
Mathematics · Differentiation · MCQ
Q29.If the function f defined as $f (x) = \frac{1}{x} - \frac{k - 1}{e ^{2 x} - 1}, x e 0,$ is continuous at x = 0, then the ordered pair (k, f(0)) is equal to :
Mathematics · Limits Continuity and Differentiability · MCQ
Q30.Let M and m be respectively the absolute maximum and the absolute minimum values of the function, f(x) = 2x3 $-$ 9x2 + 12x + 5 in the interval [0, 3]. Then M $-$ m is equal to :
Mathematics · Application of Derivatives · MCQ
Q31.Let $\frac{1}{x _{1}}, \frac{1}{x _{2}}, ..., \frac{1}{x _{n}}$ (xi $e$ 0 for i = 1, 2, ..., n) be in A.P. such that x1=4 and x21 = 20. If n is the least positive integer for which $x_{n} > 50,$ then $i = 1 \sum n (\frac{1}{x _{i}})$ …
Mathematics · Sequences and Series · MCQ
Q32. $x \to 0 lim \frac{( 27 + x ) ^{\frac{1}{3}} - 3}{9 - ( 27 + x ) ^{\frac{2}{3}}}$ equals.
Mathematics · Limits Continuity and Differentiability · MCQ
Q33.The number of numbers between 2,000 and 5,000 that can be formed with the digits 0, 1, 2, 3, 4 (repetition of digits is not allowed) and are multiple of 3 is :
Mathematics · Permutations and Combinations · MCQ
Q34.The number of values of k for which the system of linear equations, (k + 2)x + 10y = k kx + (k +3)y = k -1 has no solution, is :
Mathematics · Matrices and Determinants · MCQ
Q35.If the area of the region bounded by the curves, $y = x^{2}, y = \frac{1}{x}$ and the lines y = 0 and x= t (t >1) is 1 sq. unit, then t is equal to :
Mathematics · Area Under the Curves · MCQ
Q36.Let N denote the set of all natural numbers. Define two binary relations on N as R = {(x, y) $\in$ N $\times$ N : 2x + y = 10} and R2 = {(x, y) $\in$ N $\times$ N : x + 2y = 10}. Then :
Mathematics · Sets and Relations · MCQ
Q37.Let p, q and r be real numbers (p $e$ q, r $e$ 0), such that the roots of the equation $\frac{1}{x + p} + \frac{1}{x + q} = \frac{1}{r}$ are equal in magnitude but opposite in sign, then the sum of squares of these roots is equal to :
Mathematics · Quadratic Equation and Inequalities · MCQ
Q38.The least positive integer n for which $(\frac{1 + i 3}{1 - i 3})^{n} = 1,$ is :
Mathematics · Complex Numbers · MCQ
Q39.Two different families A and B are blessed with equal numbe of children. There are 3 tickets to be distributed amongst the children of these families so that no child gets more than one ticket. If the probability that all the tickets go to…
Mathematics · Probability · MCQ
Q40.If an angle A of a $Δ$ ABC satiesfies 5 cosA + 3 = 0, then the roots of the quadratic equation, 9x2 + 27x + 20 = 0 are :
Mathematics · Quadratic Equation and Inequalities · MCQ
Q41.The mean and the standard deviation(s.d.) of five observations are9 and 0, respectively. If one of the observations is changed such that the mean of the new set of five observations becomes 10, then their s.d. is :
Mathematics · Statistics · MCQ
Q42.Let A, B and C be three events, which are pair-wise independent and $E$ denotes the completement of an event E. If $P (A \cap B \cap C) = 0$ and $P (C) > 0,$ then $P [(\overline{A} \cap \overline{B}) ∣ C]$ …
Mathematics · Probability · MCQ
Q43.Let $a = i + j + k, c = j - k$ and a vector $b$ be such that $a \times b = c$ and $a . b = 3.$ …
Mathematics · Vector Algebra · MCQ
Q44.If the angle between the lines, $\frac{x}{2} = \frac{y}{2} = \frac{z}{1}$ and $\frac{5 - x}{- 2} = \frac{7 y - 14}{p} = \frac{z - 3}{4}$ is $cos^{- 1} (\frac{2}{3}),$ then p is equal to :
Mathematics · 3D Geometry · MCQ
Q45.If the length of the latus rectum of an ellipse is 4 units and the distance between a focus an its nearest vertex on the major axis is $\frac{3}{2}$ units, then its eccentricity is :
Mathematics · Ellipse · MCQ
Q46.If a circle C, whose radius is 3, touches externally the circle, $x^{2} + y^{2} + 2 x - 4 y - 4 = 0$ at the point (2, 2), then the length of the intercept cut by this circle C, on the x-axis is equal to :
Mathematics · Circle · MCQ
Q47.The locus of the point of intersection of the lines, $2 x - y + 42 k = 0$ and $2 k x + k y - 42 = 0$ (k is any non-zero real parameter), is :
Mathematics · Hyperbola · MCQ
Q48.A galvanometer with its coil resistance 25 $Ω$ requires a current of 1 mA for its full deflection. In order to construct an ammeter to read upto a current of 2 A, the approximate value of the shunt resistance should be :
Physics · Current Electricity · MCQ
Q49.Both the nucleus and the atom of some element arein their respective first excited states. They get de-excted by emitting photons of wavelengths $λ$ N, $λ$ A respectively. The ratio $\frac{^{λ} N}{^{λ} A}$ is…
Physics · Dual Nature of Radiation · MCQ
Q50.The de-Broglie wavelength ( $λ$ B) associated with the electron orbiting in the second excited state of hydrogen atom is related to that in the ground state ( $λ$ G) by :
Physics · Dual Nature of Radiation · MCQ
Q51.Unpolarized light of intensity I is incident on a system of two polarizers, A followed by B. The intensity of emergent light is I/2. If a third polarizer C is placed between A and B, the intensity of emergent light is reduced to I/3. The…
Physics · Wave Optics · MCQ
Q52.A ray of light is incident at an angle of 60o on one face of a prism of angle 30o. The emergent ray of light makes an angle of 30o with incident ray. The angle made by the emergent ray with second face of prism will be :
Physics · Geometrical Optics · MCQ
Q53.A charge q is spread uniformly over an insulated loop of radius r. If it is rotated with an angular velocity $ω$ with resect to normal axis then the magnetic moment of the loop is :
Physics · Magnetics · MCQ
Q54.A coil of cross-sectional area A having n turns is placed in a uniform magnetic field B. When it is rotated with an angular velocity $ω,$ the maxium e.m.f. induced in the coil will be:
Physics · Electromagnetic Induction · MCQ
Q55.A plane electromagnetic wave of wavelength $λ$ has an intensity I. It is propagatting along the positive Y-direction. The allowed expressions for the electric and magnetic fields are givn by :
Physics · Electromagnetic Waves · MCQ
Q56.A power transmission line feeds input power at 2300 V to a step down transformer with its primary windings having 4000 turns, giving the output power at 230 V. If the current in the primary of the transformer is 5 A, and its efficiency is…
Physics · Alternating Current · MCQ
Q57.Two identical conducting spheres A and B, carry equal charge. They are separated by a distance much larger than their diameters, and the force between theis F. A third identical conducting sphere, C, is uncharged. Sphere C is first touhed…
Physics · Electrostatics · MCQ
Q58.A heating element has a resistance of 100 $Ω$ at room temperature. When it is connected to a supply of 220 V, a steady current of 2 A passes in it and temperature is 500oC more than room temperature. what is the temperature…
Physics · Current Electricity · MCQ
Q59.The end correction of a resonance column is 1 cm. If the shortest length resonating with the tunning fork is 10 cm, the next resonating length should be :
Physics · Waves · MCQ
Q60.Two moles of helium are mixed with n moles of hydrogen. If $\frac{C p}{C v} = \frac{3}{2}$ for the mixture, then the value of n is :
Physics · Heat and Thermodynamics · MCQ
Q61.A particle executes simple harmonic motion and is located at x = a, b and c at times t0, 2t0 and 3t0 respectively. The freqquency of the oscillation is :
Physics · Simple Harmonic Motion · MCQ
Q62.A small soap bubble of radius 4 cm is trapped inside another bubble of radius 6 cm without any contact. Let P2 be the pressure inside the inner bubble and P0, the pressure outside the outer bubble. Radius of another bubble with pressure…
Physics · Properties of Matter · MCQ
Q63.An oscillator of mass M is at rest in its equilibrium position in a potential V = $\frac{1}{2}$ k(x $-$ X)2. A particle of mass m comes from right with speed u and collides completely inelastically with M and sticks to it. This process…
Physics · Simple Harmonic Motion · MCQ
Q64.The relative uncertainly in the period of a satellite orbiting around the earth is 10-2. If the relative uncertainty in the radius of the orbit is negligible, the relative uncertainty in the mass of the earth is :
Physics · Units and Measurements · MCQ
Q65.Suppose that the angular velocity of rotation of earth is increased. Then, as a consequence :
Physics · Gravitation · MCQ
Q66.Two particles of the same mass m are moving in circular orbits because of force, given by $F (r) = \frac{- 16}{r} - r^{3}$ The first particle is at a distance r = 1, and the second, at r = 4. The best estimate for the…
Physics · Work Power and Energy · MCQ
Q67.A body of mass m starts moving from rest along x-axis so that its velocity varies as $υ = a s$ where a is a constant and s is the distance covered by the body. The total work done by all the forces acting on the body in the…
Physics · Work Power and Energy · MCQ
Q68.Let $A$ = $(i + j)$ and, $B = (2 i - j) .$ The magnitude of a coplanar vector $C$ such that $A . C = B . C = A . B,$ …
Physics · Vector Algebra · MCQ
Q69.The percentage errors in quantities P, Q, R and S are 0.5%, 1%, 3% and 1.5% respectively in the measurement of a physical quantity A = $\frac{P ^{3} Q ^{2}}{R S} .$ The maximum percentage error in the value of A will be :
Physics · Units and Measurements · MCQ
Q70.One mole of an ideal monoatomic gas is taken along the path ABCA as show in the PV diagram. The maximum temperature attained by the gas along the path BC is given by : Includes diagram
Physics · Heat and Thermodynamics · MCQ
Q71.In the following circuit, the switch S is closed at t = 0. The charge on the capacitor C1 as a function of time will be given by $(C_{e q} = \frac{C _{1} C _{2}}{C _{1} + C _{2}})$ Includes diagram
Physics · Capacitor · MCQ
Q72.A thin circular disk is in the xy plane as shown in the figure. The ratio of its moment of inertia about z and z' axes will be : Includes diagram
Physics · Rotational Motion · MCQ
Q73.In the given circuit, the current through zener diode is : Includes diagram
Physics · Electronic Devices · MCQ
Q74.In a circuit for finding the resistance of a galvanometer by half deflection method, a 6 V battery and a high resistance of 11 k $Ω$ are used. The figure of merit of the galvanometer is 60 $μ A /$ division. In the absence of shunt…
Physics · Current Electricity · MCQ