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JEE Main 2016 Question Paper (10th-April-2016)


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JEE Main 2016 Question Paper (10th-April-2016) - Question 1

A, B, C and D are four different physical quantities having different dimensions. None of them is dimensionless. But we know that the equation AD = C ln(BD) holds true.Then which of the combination is not a meaningful quantity?

JEE Main 2016 Question Paper (10th-April-2016) - Question 2

A particle of mass M is moving in a circle of fixed radius R in such a way that its centripetal acceleration at time t is given by n2 R t2 where n is a constant. The power delivered to the particle by the force acting on it, is :

Detailed Solution for JEE Main 2016 Question Paper (10th-April-2016) - Question 2

By work energy theorem, power delivered to the mass will be equal to the rate of change of kinetic energy of the particle.

Hence, v2​/R = n2Rt2

v = nRt

KE = 1/2 ​Mv= 1/2 Mn2R2t2

Hence, Power = d(KE)/dt ​= Mn2R2t

JEE Main 2016 Question Paper (10th-April-2016) - Question 3

Concrete mixture is made by mixing cement, stone and sand in a rotating cylindrical drum. If the drum rotates too fast, the ingredients remain stuck to the wall of the drum and proper mixing of ingredients does not take place. The maximum rotational speed of the drum in revolutions per minute(rpm) to ensure proper mixing is close to : (Take the radius of the drum to be 1.25 m and its axle to be horizontal) :

JEE Main 2016 Question Paper (10th-April-2016) - Question 4

Velocity-time graph for a body of mass 10 kg is shown in figure. Work-done on the body in first two seconds of the motion is:

JEE Main 2016 Question Paper (10th-April-2016) - Question 5

In the figure shown ABC is a uniform wire. If centre of mass of wire lies vertically below point A, then BC/AB is close to :

JEE Main 2016 Question Paper (10th-April-2016) - Question 6

An astronaut of mass m is working on a satellite orbiting the earth at a distance h from the earth’s surface. The radius of the earth is R , while its mass is M. The gravitational pull FG on the astronaut is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 7

A bottle has an opening of radius a and length b.  A cork of length b and radius (a+∆a) where (∆a<<a) is compressed to fit into the opening completely (See figure). If the bulk modulus of cork is B and frictional coefficient between the bottle and cork is µ then the force needed to push the cork into  the bottle is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 8

A Carnot freezer takes heat from water at 0ºC inside it and rejects it to the room at a temperature of 27ºC. The latent heat of ice is 336×103Jkg−1. If 5 kg of water at 0ºC is converted into ice at 0ºC by the freezer, then the energy consumed by the freezer is close to :

JEE Main 2016 Question Paper (10th-April-2016) - Question 9

Which of the following shows the correct relationship between the pressure ‘P’ and density ρ of an ideal gas at constant temperature?

JEE Main 2016 Question Paper (10th-April-2016) - Question 10

In an engine the piston undergoes vertical simple harmonic motion with amplitude 7 cm. A washer rests on top of the piston and moves with it. The motor speed is slowly increased.The frequency of the piston at which the washer no longer stays in contact with the piston, is close to :

JEE Main 2016 Question Paper (10th-April-2016) - Question 11

A toy-car, blowing its horn, is moving with a steady speed of 5 m/s, away from a wall.An observer, towards whom the toy car is moving, is able to hear 5 beats per second.If the velocity of sound in air is 340 m/s, the frequency of the horn of the toy car is close to :

JEE Main 2016 Question Paper (10th-April-2016) - Question 12

Within a spherical charge distribution of charge density ρ(r), N equipotential surfaces of potential V0, V0+∆V, V0+2∆V, .......... V0+N∆V  (∆V>0), are drawn and have increasing radii r0, r1, r2,..........rN, respectively. If the difference in the radii of the surfaces is constant for all values of V0 and ∆V then :

JEE Main 2016 Question Paper (10th-April-2016) - Question 13

Figure shows a network of capacitors where the numbers indicates capacitances in micro Farad. The value of capacitance C if the equivalent capacitance between point A and B is to be 1 µF is

JEE Main 2016 Question Paper (10th-April-2016) - Question 14

The resistance of an electrical toaster has a temperature dependence given by R(T)=R0 [1+α(T−T0)] in its range of operation.  At T0=300 K, R=100 Ω and at T=500 K, R=120 Ω. The toaster is connected to a voltage source at 200 V and its temperature is raised at a constant rate from 300 to 500 K in 30 s.  The total work done in raising the temperature is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 15

Consider a thin metallic sheet perpendicular to the plane of the paper moving with speed ‘ v ’ in a uniform magnetic field B going into the plane of the paper (See figure). If charge densities σ1 and σ2 are induced on the left and right surfaces, respectively, of the sheet then (ignore fringe effects)

JEE Main 2016 Question Paper (10th-April-2016) - Question 16

A fighter plane of length 20 m, wing span (distance from tip of one wing to the tip of the other wing) of 15 m and height 5 m is flying towards east over Delhi. Its speed is 240 ms−1.The earth’s magnetic field over Delhi is 5×10−5 T with the declination angle ~0º and dip of θ such that sin θ = 2/3. If the voltage developed is VB between the lower and upper side of the plane and VW between the tips of the wings then VB and VW are close to:

JEE Main 2016 Question Paper (10th-April-2016) - Question 17

A conducting metal circular-wire-loop of radius r is placed perpendicular to a magnetic field which varies with time as , where B0 and τ are constants, at time t=0.  If the resistance of the loop is R then the heat generated in the loop after a long time (t →∞) is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 18

Consider an electromagnetic wave propagating in vacuum. Choose the correct statement :

JEE Main 2016 Question Paper (10th-April-2016) - Question 19

A hemispherical glass body of radius 10 cm and refractive index 1.5 is silvered on its curved surface. A small air bubble is 6 cm below the flat surface inside it along the axis. The position of the image of the air bubble made by the mirror is seen :
 

JEE Main 2016 Question Paper (10th-April-2016) - Question 20

Two stars are 10 light years away from the earth. They are seen through a telescope of objective diameter 30 cm.The wavelength of light is 600 nm. To see the stars just resolved by the telescope, the minimum distance between them should be (1 light year=9.46× 1015m) of the order of :

JEE Main 2016 Question Paper (10th-April-2016) - Question 21

A photoelectric surface is illuminated successively by monochromatic light of wavelengths λ and λ/2 . If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times that in the first case, the work function of the surface is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 22

A neutron moving with a speed ‘v’ makes a head on collision with a stationary hydrogen atom in ground state.The minimum kinetic energy of the neutron for which inelastic collision will take place is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 23

To get an output of 1 from the circuit shown in figure the input must be :

JEE Main 2016 Question Paper (10th-April-2016) - Question 24

A modulated signal Cm(t) has the form Cm( t ) = 30 sin 300πt + 10 (cos 200πt −cos 400πt). The carrier frequency fc, the modulating frequency (message frequency) fω, and the modulation index µ are respectively given by :

JEE Main 2016 Question Paper (10th-April-2016) - Question 25

A particle of mass m is acted upon by a force F given by the empirical law . If this law is to be tested experimentally by observing the motion starting from rest, the best way is to plot:

JEE Main 2016 Question Paper (10th-April-2016) - Question 26

A thin 1 m long rod has a radius of 5 mm. A force of 50 πkN is applied at one end to determine its Young’s modulus. Assume that the force is exactly known.If the least count in the measurement of all lengths is 0.01 mm, which of the following statements is false ?

JEE Main 2016 Question Paper (10th-April-2016) - Question 27

A galvanometer has a 50 division scale. Battery has no internal resistance. It is found that there is deflection of 40 divisions when R = 2400 Ω.  Deflection becomes 20 divisions when resistance taken from resistance box is 4900 Ω. Then we can conclude :

JEE Main 2016 Question Paper (10th-April-2016) - Question 28

To determine refractive index of glass slab using a travelling microscope, minimum number of readings required are :

JEE Main 2016 Question Paper (10th-April-2016) - Question 29

A realistic graph depicting the variation of the reciprocal of input resistance in an input characteristics measurement in a common emitter transistor configuration is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 30

The ratio (R) of output resistance r0, and the input resistance ri in measurements of input and output characteristics of a transistor is typically in the range :

JEE Main 2016 Question Paper (10th-April-2016) - Question 31

The volume of 0.1N dibasic acid sufficient to neutralize 1g of a base that furnishes 0.04 mole of OH- in aqueous solution is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 32

Initially, the root mean square (rms) velocity of N2 molecules at certain temperature is u.
If this temperature is doubled and all the nitrogen molecules dissociate into nitrogen atoms, then the new rms velocity will be :

JEE Main 2016 Question Paper (10th-April-2016) - Question 33

Aqueous solution of which salt will not contain ions with the electronic configuration 1s22s22p63s23p6?

JEE Main 2016 Question Paper (10th-April-2016) - Question 34

The bond angle H-X-H is the greatest in the compound :

JEE Main 2016 Question Paper (10th-April-2016) - Question 35

If 100 mole of H2O2 decompose at 1 bar and 300 K, the work done (kJ) by one mole of O2(g) as it expands against 1 bar pressure is: 2H2O2(l) ⇌ 2H2O(l) + O2(g) (R = 8.3 J K−1 mol−1)

JEE Main 2016 Question Paper (10th-April-2016) - Question 36

An aqueous solution of a salt MX2 at certain temperature has a van’t Hoff factor of 2.
The degree of dissociation for this solution of the salt is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 37

A solid XY kept in an evacuated sealed container undergoes decomposition to form a mixture of gases X and Y at temperature T. The equilibrium pressure is 10 bar in this vessel. Kp for this reaction is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 38

Oxidation of succinate ion produces ethylene and carbon dioxide gases. On passing 0.2 Faraday electricity through an aqueous solution of potassium succinate, the total volume of gases (at both cathode and anode) at STP (1 atm and 273 K) is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 39

The rate law for the reaction below is given by the expression k [A][B]
A + B --> Product
If the concentration of B is increased from 0.1 to 0.3 mole, keeping the value of A at 0.1 mole, the rate constant will be :

JEE Main 2016 Question Paper (10th-April-2016) - Question 40

Gold numbers of some colloids are : Gelatin : 0.005 - 0.01, Gum Arabic : 0.15 - 0.25; Oleate : 0.04 - 1.0; Starch : 15 - 25. Which among these is a better protective colloid ?

JEE Main 2016 Question Paper (10th-April-2016) - Question 41

The following statements concern elements in the periodic table. Which of the following is true?

JEE Main 2016 Question Paper (10th-April-2016) - Question 42

Extraction of copper by smelting uses silica as an additive to remove :

JEE Main 2016 Question Paper (10th-April-2016) - Question 43

Identify the reaction which does not liberate hydrogen :

JEE Main 2016 Question Paper (10th-April-2016) - Question 44

The commercial name for calcium oxide is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 45

Assertion : Among the carbon allotropes, diamond is an insulator, whereas, graphite is a good conductor of electricity.
Reason : Hybridization of carbon in diamond and graphite are sp3 and sp2 , respectively.

JEE Main 2016 Question Paper (10th-April-2016) - Question 46

Identify the incorrect statement :

JEE Main 2016 Question Paper (10th-April-2016) - Question 47

Identify the correct statement :

JEE Main 2016 Question Paper (10th-April-2016) - Question 48

Which of the following is an example of homoleptic complex?

JEE Main 2016 Question Paper (10th-April-2016) - Question 49

The transition metal ions responsible for color in ruby and emerald are, respectively :

JEE Main 2016 Question Paper (10th-April-2016) - Question 50

Which one of the following substances used in dry cleaning is a better strategy to control environmental pollution ?

JEE Main 2016 Question Paper (10th-April-2016) - Question 51

Sodium extract is heated with concentrated HNO3 before testing for halogens because :

JEE Main 2016 Question Paper (10th-April-2016) - Question 52

Bromination of cyclohexene under conditions given below yields :

JEE Main 2016 Question Paper (10th-April-2016) - Question 53

Consider the reaction sequence below :
 X is:

JEE Main 2016 Question Paper (10th-April-2016) - Question 54

Which one of the following reagents is not suitable for the elimination reaction ?

JEE Main 2016 Question Paper (10th-April-2016) - Question 55

The correct statement about the synthesis of erythritol (C(CH2OH)4) used in the preparation of PETN is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 56

Fluorination of an aromatic ring is easily accomplished by treating a diazonium salt with HBF4. Which of the following conditions is correct about this reaction ?

JEE Main 2016 Question Paper (10th-April-2016) - Question 57

Which of the following polymers is synthesized using a free radical polymerization technique?

JEE Main 2016 Question Paper (10th-April-2016) - Question 58

The “N” which does not contribute to the basicity for the compound is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 59

Which of the following is a bactericidal antibiotic ?

JEE Main 2016 Question Paper (10th-April-2016) - Question 60

Observation of “Rhumann’s purple” is a confirmatory test for the presence of:

JEE Main 2016 Question Paper (10th-April-2016) - Question 61

Let P = {θ : sinθ − cosθ = √2 cosθ } and Q = {θ : sinθ + cosθ = √2 sinθ } be two sets.  Then :

JEE Main 2016 Question Paper (10th-April-2016) - Question 62

If x is a solution of the equation,  then  is equal to :

JEE Main 2016 Question Paper (10th-April-2016) - Question 63

Let z = 1+ai be a complex number, a > 0, such that z3 is a real number. Then the sum 1+z+z2+.....+z11  is equal to :

JEE Main 2016 Question Paper (10th-April-2016) - Question 64

Let A be a 3 × 3 matrix such that A2−5A+7I=O.
Statement - I : 
Statement - II : The polynomial A3−2A− 3A+I can be reduced to 5(A−4I).
Then :

JEE Main 2016 Question Paper (10th-April-2016) - Question 65

If A = , then the determinant of the matrix (A2016−2A2015−A2014) is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 66

If = 11, then n satisfies the equation :

JEE Main 2016 Question Paper (10th-April-2016) - Question 67

If the coefficients of x−2 and x−4 in the expansion of , (x > 0), are m and n respectively, then m/n  is equal to :

JEE Main 2016 Question Paper (10th-April-2016) - Question 68

Let a1, a2, a3, ......, an, ..... be in A.P.  If a3+a7+a11+a15=72, then the sum of its first 17 terms is equal to :

JEE Main 2016 Question Paper (10th-April-2016) - Question 69

The sum  is equal to :

JEE Main 2016 Question Paper (10th-April-2016) - Question 70

 is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 71

Let a, b ∈ R, (a ≠ 0).  If the function f defined as

is continuous in the interval [0, ∞), then an ordered pair (a, b) is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 72

Let f(x) = sin4x + cos4x . Then f is an increasing function in the interval :

JEE Main 2016 Question Paper (10th-April-2016) - Question 73

Let C be a curve given by . If P is a point on C, such that the tangent at P has slope 2/3, then a point through which the normal at P passes, is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 74

The integral  is equal to : (where C is a constant of integration.)

JEE Main 2016 Question Paper (10th-April-2016) - Question 75

The value of the integral where [x] denotes the greatest integer less than or equal to x, is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 76

For x ∈ R, x ≠ 0, if y(x) is a differentiable function such that
equals : (where C is a constant.)

JEE Main 2016 Question Paper (10th-April-2016) - Question 77

The solution of the differential equation where 0 ≤ x < π/2,  and y(0)=1, is given by :

JEE Main 2016 Question Paper (10th-April-2016) - Question 78

A ray of light is incident along a line which meets another line, 7x−y+1=0, at the point (0, 1). The ray is then reflected from this point along the line, y+2x=1.Then the equation of the line of incidence of the ray of light is :

Detailed Solution for JEE Main 2016 Question Paper (10th-April-2016) - Question 78

Let slope of incident ray be m.
∴   angle of incidence = angle of reflection

JEE Main 2016 Question Paper (10th-April-2016) - Question 79

A straight line through origin O meets the lines 3y=10−4x and 8x+6y+5=0 at points A and B respectively. Then O divides the segment AB in the ratio :

JEE Main 2016 Question Paper (10th-April-2016) - Question 80

Equation of the tangent to the circle, at the point (1, −1), whose centre is the point of intersection of the straight lines x−y=1 and 2x+y=3 is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 81

P and Q are two distinct points on the parabola, y2=4x, with parameters t and t1 respectively.  If the normal at P passes through Q, then the minimum value of t2is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 82

A hyperbola whose transverse axis is along the major axis of the conic,  and has vertices at the foci of this conic. If the eccentricity of the hyperbola is 3/2 , then which of the following points does NOT lie on it ?

JEE Main 2016 Question Paper (10th-April-2016) - Question 83

ABC is a triangle in a plane with vertices A(2, 3, 5), B(−1, 3, 2) and C(λ, 5, µ). If the median through A is equally inclined to the coordinate axes, then the value of (λ33+5) is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 84

The number of distinct real values of λ for which the lines and are coplanar is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 85

Let ABC be a triangle whose circumcentre is at P.  If the position vectors of A, B, C and P are  and  respectively, then the position vector of the orthocentre of this triangle, is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 86

The mean of 5 observations is 5 and their variance is 124. If three of the observations are 1, 2 and 6 ; then the mean deviation from the mean of the data is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 87

An experiment succeeds twice as often as it fails.The probability of at least 5 successes in the six trials of this experiment is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 88

If A>0, B>0 and A + B = π/6, then the minimum value of tanA+tanB is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 89

The angle of elevation of the top of a vertical tower from a point A, due east of it is 45º.The angle of elevation of the top of the same tower from a point B, due south of A is 30º.If the distance between A and B is 54√2 m , then the height of the tower (in metres), is :

JEE Main 2016 Question Paper (10th-April-2016) - Question 90

The contrapositive of the following statement, “If the side of a square doubles, then its area increases four times”, is :

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