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Mar. 13, 2013

At Apex Institute, we endeavor to amalgamate the ancient values of uttermost dedication and responsibility that gave teaching a very pious and sacred status, with latest teaching methodologies so as to make the act of learning, a delectable experience. The arduous task is accomplished by a team of diligent academicians and entrepreneurs, who with the years of experience have mastered the techniques to transform even the most abstruse topics easy to comprehend.

Great emphasis is laid on the concepts and fundamentals with a smooth and systematic transition to the advanced levels of teaching. The interaction between students and teachers is always encouraged so as to provide a very healthy environment for growth and learning. During the process of training the students for IIT-JEE/Engg./Medical entrance examinations, great emphasis is laid on the fundamentals so as to excel in the CBSE examination also.

Illustrious faculty and excellent teaching techniques provide you will an infallible approach to success only at Apex Institute.

Our Mission

Generating excellence both in academic and competitive aspects thereby training the youth for most gruelling entrance level exams viz. IIT-JEE/Engg.& Medical entrance.

Our Vision

Generating excellence in academic, exploring creative areas of the dormant self, nurturing talent & aptitude & including perseverance among the students to keep themselves abreast of the latest developments in the field of competitive examinations.

Our Objectives

1. Striving for the best possible education to ambitious students aspiring to join corporate world as medical professionals.

2. Creating a comprehensive understanding of the subjects & help developing strategies to meet arduous competitions among the students to match, excel & ameliorate the competition oriented education.

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- 1. JEE-MainDuration : 3 hours Max. Marks : 360 Please read the instructions carefully. You are allotted 5 minutes specifically for this purpose. INSTRUCTIONS Do not break the seal of the question paper booklet before instructed to do so by the invigilator. This Paper contains 90 questions. Please ensure that the Question paper you have received contains ALL THE QUESTIONS. QUESTION PAPER FORMAT1. All the questions has four choices (A), (B), (C) and (D) out of which only ONE is correct & carry 4 marks each. 1 mark will be deducted for each wrong answer. NOTE : GENERALINSTRUCTION FOR FILLING THE OMRARE GIVEN BELOW :1. Use only HB pencil or blue/black pen (avoid gel pen) for darkening the bubble.2. Indicate the correct answer for each question by filling appropriate bubble in your OMR answer sheet.3. The Answer sheet will be checked through computer hence, the answer of the question must be marked by shading the circles against the question by dark HB pencil or blue/black pen.4. While filling the bubbles please be careful about question paper format. Name of the student EW Roll Number . I have read all the instructions and shall I have verified all the information filled in abide by them. by the candidate. ................................................................ ................................................................ Signature of the Student Signature of the invigilator
- 2. MATHEMATICS A 1 B 3 CQ.1 Let A, B, C are the angles of a triangle and tan , tan . Then tan is equal to 2 4 2 4 2 1 3 3 13 (A) (B) (C) (D) 4 4 16 16Q.2 The line segment joining the points (4, 7) & (–2, –1) is a diameter of a circle whose x-intercept is equal to (A) 4 (B) 5 (C) 8 (D) 2Q.3 The arithmetic mean of 5 consecutive integers starting with m is a. Then, the arithmetic mean of 13 consecutive integers starting from m + 1 is (A) a + 2 (B) a + 3 (C) a + 5 (D) a – 2Q.4 The number of real roots of the equation (x – 4)2 + (x – 5)2 + (x – 6)2 = 0 is equal to (A) 1 (B) 2 (C) 3 (D) 0Q.5 The midpoint of interval in which inequality x 2 – 4( x ) 2 12 is satisfied. (A) 2 (B) 3 (C) 0 (D) 1Q.6 A line L has intercepts of 2 & 4 on the coordinate axes, when axes are rotated through a given angle keeping the origin fixed,the same line L has intercepts of a & b then (A) 16a2 + 16b2 = 5a2b2 (B) 4a2 + 4b2 = a2b2 (C) a2 + b2 = 20 (D) a2 – b2 = 12 : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 2
- 3. 3Q.7 If orthocentre of a triangle with vertices O(0, 0), A(3, 4) and B(4, 0) is point P(3, ) then the orthocentre 4 of PAB will be 9 7 (A) (0, 0) (B) (3, ) (C) (3, 4) (D) (3, ) 4 4Q.8 A student read common difference of an AP as –4 instead of 4 and obtained the sum of first 10 terms as –40. Then the actual sum of first ten terms is equal to (A) 240 (B) 120 (C) 320 (D) 480Q.9 The set of values of a for which the equation x 2 – x a 2 – 3a 2 + a2 – 3a + 2 = 0 has roots of opposite sign. (A) a (1, 2) (B) a (–, 1) (2, ) (C) a (D) a [1, 2] n n n nQ.10 The coefficient of xn in the polynomial (x + C0) (x + 3 C1) (x + 5 C2) ...... (x + (2n + 1) Cn) is (A) n.2n (B) n.2n+1 (C) (n + 1)2n (D) n.2n–1Q.11 The number of ways of rearranging the letters of the word EDUWAVE such that no two vowels are consecutive, is equal to (A) 144 (B) 72 (C) 71 (D) 143Q.12 Let a function f :[1, 3] R be defined as f (x) = x2 – 4x + 3 then range of f (x) will be (A) R (B) [0, ) (C) [–1, 0] (D) [–1, ]Q.13 The equation of right bisector of line segment joining (7, 4) and (3, 0) is (A) x + y = 7 (B) 2x + y = 12 (C) x + 2y = 9 (D) x + y = 10 : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 3
- 4. Q.14 The number of solutions of the equation, (sinx + cosx + 2 2 )1+ sin 2x = 18, – x is equal to (A) 0 (B) 1 (C) 2 (D) 4Q.15 If P(r) is the number of points (x, y), (where x, y I), which lie inside or on the curve n |xy| – r(|x|+|y| ) + r2 = 0, r N then P(r) is equal to r 1 1 1 (A) n(4n 2 12n 11) (B) n ( n 1)( 2n 1) 3 6 1 1 2 (C) n ( n 2 9n 11) (D) n ( n 1) 2 3 4 n((x – 3) 2 (x –1)(4 – x))Q.16 Number of integer(s), in domain of function f (x) = is(are) equal to (x – 2) 4 (A) 2 (B) 3 (C) 0 (D) 1Q.17 The number of ways of distributing 6 different chocolates among three children of different age groups such that youngest one gets exactly three chocolates & eldest gets one, is equal to (A) 10 (B) 20 (C) 60 (D) 120Q.18 The set denoted by ((A CC ) (C BC) (B CC) (C AC)) (A B C) is same as (A) A B C (B) AC BC CC (C) ABC CC (D) AC BC CC : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 4
- 5. tan x cot xQ.19 The range of function f(x) = sinx + cosx + 1 tan x 1 cot x (A) [1 – 2 , 1 2 ] (B) [1 – 2, 1 2] – {0,1, 2} (C) [1 – 2 , 0] (0, 1 2 ) (D) (1 – 2 , 1 2 )Q.20 If are roots of x2 – a(x – 1) + b = 0, then the value of 2 a 1 2 a 1 2 2 2 , is equal to a – b – a a – b – a a b 1 4 (A) 2 (B) (C) 0 (D) ab abQ.21 If f : R S defined by f(x) = |sin 3x| + |cos 3x| is onto then S is equal to (A) [1, 2] (B) [0, 2] (C) [0, 2] (D) [– 2 , 2 ]Q.22 The number of integral values of a, for which the equation cos2x + 7 = a(2 – sinx) can have a solution, is equal to (A) 0 (B) 2 (C) 4 (D) more than 4Q.23 Length of common chord of circles x2 + y2 = 4 & (x – 2)2 + y2 = 4 (A) 2 2 (B) 2 (C) 2 3 (D) 6Q.24 The value of for which line 3x – 4y + = 0 is a normal to circle x2 + y2 – 4x – 8y – 5 = 0 (A) 10 (B) 22 (C) –10 (D) –12 : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 5
- 6. Q.25 A relation R is defind on set of real number such that a R b a3 = ab2 a, b R then R is (A) reflexive & symmetric (B) reflexive & transitive (C) symmetric & transitive (D) An equivalence relationQ.26 Graph of which of the following functions is symmetrical about line y = x. 1– x (A) f (x) = (B) f (x) = 3x(x+1) (C) f (x) = x(x + 1) (D) f (x) = x3 1 x 1 1 x 2 1 x 3 2 3Q.27 If (x) = 1 1 x 1 x then value of (2014) is equal to 1 1 x 2 1 x 3 (A) sec 2n, (n I) (B) tan n , (n I) (C) cos(2n + 1), (n I) (D) sin(4n + 1) –sin(4n – 1) , (n I) 2 2Q.28 If the quadratic polynomial f (x) = ax2 + bx + c is such that f (x) 0, x R & f (1) = 0, f (2) = 3 then the value of f (5) is equal to (A) 25 (B) 16 (C) 36 (D) 48Q.29 If expression x2 + px +1 is a factor of 2x3 + bx + 4 then b + p is equal to (A) 4 (B) – 4 (C) – 8 (D) 8Q.30 Function f(x) = sin[{x}] + tan{[x]} is ([.] & {.} denotes greatest integer function & fractional part function respectively) (A) odd function (B) Even function (C) Even as well as odd function (D) Neither odd nor even function : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 6
- 7. PHYSICSQ.31 Two small sphere of putty, A and B, of mass M and 3M, respectively hang from the ceiling on strings of equal length l. Sphere A is drawn aside so that it is raised to a height h0 as shown figure and then released. Sphere A collides with sphere B; they stick together and swing to a maximum height h equal to 1 1 (A) h0 (B) h0 16 8 1 1 (C) h0 (D) h0 4 3Q.32 A 2-kilogram box hangs by a massless rope from a ceiling. A force slowly pulls the box horizontally to the side until the horizontal force is 10 newtons. The box is then in equilibrium as shown in figure. The angle that the rope makes with the vertical is closest to (A) arctan 0.5 (B) arsin 0.5 (C) arctan 2.0 (D) 45º : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 7
- 8. Q.33 An electric sander has a continuous belt that rubs against a wood surface as shown schematically. The sander is 50 percent efficient and draws a power of 1080 watt from a 120 volt line. The belt speed is 10 meters per second. If the sander is pushing against the wood with a normal force of 100 newtons, the coefficient of friction is most nearly (A) 0.02 (B) 0.54 (C) 0.4 (D) 1.1Q.34 A particle of mass M moves in a circular orbit of radius r around a fixed point under the influence of an K attractive force F , where K is a constant. If the potential enegy of the particle is zero at an r3 infinite distance from the force centre, the total energy of the particle in the circular orbit is K K K (A) (B) (C) 0 (D) r2 2r 2 2r 2Q.35 A thin uniform steel chain is 10meters long with a mass density of 2kilograms per meter. One end ofthe chain is attached to a horizontal axle having a radius that is small compared to the length of the chain. If the chain initially hangs vertically, the work required to slowly wind it up on to the axle is closest to (A) 100J (B) 200J (C) 1000J (D) 2000J : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 8
- 9. Q.36 The figure shows a small mass connected to a string, which is attached to a vertical post. If the mass is released when the string is horizontal as shown, the magnitude of the total acceleration of the mass as a function of the angle is (A) g sin (B) 2g cos (C) 2g sin (D) g 3sin 2 1Q.37 A uniform rod of length 10 meter and mass 20 kilograms is balanced on a fulcrum with a 40-kilogram mass on one end of the rod and a 20-kilogram mass on the other end, as shown below. How far is the fulcrum located from the centre of the rod ? (A) 0m (B) 1m (C) 1.25m (D) 1.5mQ.38 A man of mass m on an initially stationary boat gets off the boat by leaping to the left in an exactly horizontally direction. Immediately after the leap, the boat, of mass M, is observed to be moving to the right at speed v. How much work did the man do during the leap (both on his own body and on the boat) 1 2 1 2 1 2 1 M2 2 (A) Mv (B) mv (C) (M m)v (D) (M )v 2 2 2 2 m : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 9
- 10. Q.39 A block of mass m sliding down an incline at constant speed is initially at a height h above the ground, as shown in the figure. The coefficient of kinetic friction between the mass and the incline is . If the mass continue to slide down the incline at a constant speed, how much energy is dissipated by friction by the time the mass reaches the bottom of the incline ? (A) mgh/ (B) mgh (C) mgh/sin (D) mgh sinQ.40 A particle of mass m undergoes harmonic oscillation with period T0. A force proportional to the speed v of the particle. f = –bv, is introduced. If the particle continues to oscillate, the period with f acting is (A) large than T0 (B) smaller than T0 (C) independent of b (D) dependent linearly on bQ.41 The equation of motion of a rocket in free space can be written dv dm m u 0 dt dt where m is the rocket’s mass, v is its velocity, t is time, and u is a constant. The equation can be solved to give v as a function of m. If the rocket has m = m0 and v = 0 when it starts, what is the solution? (A) u m0/m (B) u exp (m0/m) (C) u sin (m0/m) (D) none of the aboveQ.42 Young’s modulus of nylon is 5 109 N/m2. A force of 5 105 N is applied to a 2-m length of nylon of cross sectional area 0.1 m2. By what amount does the nylon stretch? (A) 2 101 m (B) 2 102 m (C) 2 103 m (D) 2 104 m : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 10
- 11. Q.43 A sealed and thermally insulated container of total volume V is divided into two equal volumes by an impermeable wall. The left half of the container is initially occupied by n moles of an ideal gas at temperature T. Which of the following gives the change in entropy of the system when the wall is suddenly removed and the gas expands to fill the entire volume ? (A) 2nR ln 2 (B) nR ln 2 (C) 1/2 nR ln 2 (D) – nR ln 2Q.44 A 120 Hz tone has an intensity level of 20 dB. The velocity of sound in air is 340m/s. The bulk modulus of air is 142 kPa. The pressure amplitude of the sound waves, in SI units, is closest to: –4 –5 –5 –4 (A) 3 × 10 (B) 3× 10 (C) 6 × 10 (D) 6 × 10Q.45 A slab of insulation is made of three layers, as Drawing I indicates. 240 °C 210 °C Each of the layers A, B, and C has the same thickness, but a different thermal conductivity. Heat flows through the slab, and 250 °C A B C 150 °C the temperatures are as shown. What are the temperatures T1 Drawing I and T2 in Drawing II where the layers are arranged in a different order? T1 T2 (A) T1 = 230 °C and T2 = 170 °C (B) T1 = 200 °C and T2 = 180 °C 250 °C B C A 150 °C (C) T1 = 220 °C and T2 = 160 °C Drawing I I (D) T1 = 180 °C and T2 = 160 °CQ.46 A mixture of two ideal gases A and B is in thermal equilibrium at 600 K. A molecule of A has one- fourth the mass of a molecule of B and the rms speed of molecules of A is 400 m/s. Determine the rms speed of molecules of B. (A) 100 m/s (B) 200 m/s (C) 400 m/s (D) 800 m/s : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 11
- 12. Q.47 When the gas enclosed beneath the piston shown in the figure receives 1930 J of heat, Q, from its surroundings, it performs 2250 J of work in raising the piston. What is the change in the internal energy of the gas? Q (A) –320 J (B) +320 J (C) –4180 J (D) +4180 JQ.48 A quantity of gas undergoes adiabatic expansion in an insulated container to four times its initialvolume. The ratio of the specific heat capacities at constant pressure and constant volume, cP/cV , for gas is approximately 1.5. Determine the final pressure of the gas if the initial pressure is 2.0 105 Pa. (A) 0.2 105 Pa (B) 0.4 105 Pa (C) 4 105 Pa (D) 0.25 105 PaQ.49 A 5-kilogram stone is dropped on a nail and drives the nail 0.025 meter into a piece of wood. If the stone is moving at 10 meters per second when it hits the nail, the average force exerted on the nail by the stone while the nail is going into the wood is. (A) 10N (B) 100N (C) 1000N (D) 10000NQ.50 For a particle position-versus-time graph is shown below? Which of the following is the velocity versus time graph for the particle ? (A) (B) (C) (D) : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 12
- 13. Q.51. A transverse periodic wave described by the expression x t y sin 2 2 10 (where y and x are in meters and t is in seconds) is established on a string. Which one of the following statements concerning this wave is false? (A) The wave is traveling in the negative x direction. (B) The amplitude is 1.0 m. (C) The frequency of the wave is 0.10 Hz. (D) The wave travels with speed 5.0 m/s.Q.52 A transverse periodic wave on a string with a linear density of 0.200 kg/m is described by the following equation: y = 0.005 sin(420t 21.0x), where x and y are in meters and t is in seconds. What is the tension in the string? (A) 4 N (B) 32 N (C) 80 N (D) 66 NQ.53 The distribution of relative intensity I () of black body radiation from a solid object versus the wave- length is shown in figure. If the Wien displacement law constant is 2.9 × 10 –3 m.K, what is the approximate temperature of the object ? Intensity 0 2 4 6 (A) 10K (B) 50k (C) 250k (D) 1500 k : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 13
- 14. Q.54 A uniform disk of radius 1.2 m and mass 0.60 kg is rotating at 25 rad/s around an axis that passes through its center and is perpendicular to the disk. A rod makes contact with the rotating disk with a force of 4.5 N at a point 0.75 m from the axis of rotation as shown. The disk is brought to a stop in 5.0 s. What is the coefficient of kinetic friction for the two materials in contact? rotating 4.5 N disk 0.75 m (A) 0.22 (B) 0.48 (C) 0.64 (D) 0.37Q.55 The pulley system shown below operates as a modified lever. Pulley A and pulley B turn together. So when a person pulls on rope A the mass attached to rope B will be lifted. Which of the following changes to the system will reduce the force needed to lift the mass? Pulley A Pulley B Rope A Rope B m (A) Increase the length of rope A. (B) Increase the length of rope B. (C) Increase the diameter of pulley A. (D) Increase the diameter of pulley B. : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 14
- 15. Q.56 Using the data in the table, determine how many calories are needed to change 100 g of solid X at 10 °C to a vapor at 210 °C. Thermodynamic Constants for Substance X are. heat of fusion 40.0 cal/g heat of vaporization 150.0 cal/g melting point 10.0 °C boiling point 210.0 °C specific heat capacity (liquid X ) 0.500 cal/(g × C°) (A) 4000 cal (B) 10 000 cal (C) 15 000 cal (D) 29 000 calQ.57 Consider the quasi-static adiabatic expansion of an ideal gas from an initial state i to a final state f. Which of the following statements is NOT true ? (A) No heat flows into or out of the gas. 500 C P(kPa) (B) The entropy of state i equals the entropy of state f. 200 B A (C) The change of internal energy of the gas is PdV 2 V(m3) (D) The temperature of the gas remains constant.Q.58 Statement-1: Elastic forces can be conservative even beyond proportionality limit Statement-2: Materials can be stretched even beyond proportionality limit. (point till which Hooke’s law is valid is called proportionality limit) (A) Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1. (B) Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1. (C) Statement-1 is true, statement-2 is false. (D) Statement-1 is false, statement-2 is true. : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 15
- 16. Q.59 Statement-1 : A body is emitting primarily red light. As the temperature of body is increased it may emit primarily yellow light. Statement-2 : Rate of radiation emitted by a body increases as the temperature increases. (A) Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1. (B) Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1. (C) Statement-1 is true, statement-2 is false. (D) Statement-1 is false, statement-2 is true.Q.60 Figure shows a yo-yo placed on a rough surface friction is sufficient for pure rolling. After force F acts pure rolling begins. F y x Statement-1: Angular acceleration of yo-yo is in clockwise sense. Statement-2: Torque due to F must be larger than the torque due to friction. (A) Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1. (B) Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1. (C) Statement-1 is true, statement-2 is false. (D) Statement-1 is false, statement-2 is true. : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 16
- 17. CHEMISTRY Q.61 For the reaction, 2Ag+ (aq) + Cu (s) Cu+2(aq) + 2Ag (s) at equilibrium, [Cu+2] = x M and [Ag+] = y M. If volume of solution is doubled by adding water, then at new equilibrium x y x y (A) [Cu+2] = M , [Ag+] = M (B) [Cu+2] > M , [Ag+] > M 2 2 2 2 x y x y (C) [Cu+2] < M, [Ag+] > M (D) [Cu+2] < M, [Ag+] < M 2 2 2 2Q.62 Which of the following is correct order of stability of given carbocations ? (I) (II) CH3 — O — CH — CH3 (III) (IV) (A) II > I > III > IV (B) I > II > III > IV (C) II > I > IV > III (D) III > IV > II > IQ.63 Which of the following molecule is polar as well as planar (A) NH3 (B) BF3 (C) ICl2– (D) IF3Q.64 28 g N2 and 6 g of H2 are heated over a catayst in a closed 1 L flask at 450° C. The NH3 present in equilibrium mixture required 500 ml of 1.0 M H2SO4 solution for neutralization. The value of KC for the reaction 2NH3(g) N2(g) + 3H2 (g) is (A) 1.69 mol2L–2 (B) 0.03 mol2 L–2 (C) 0.59 mol-2L2 (D) 0.02 mol–2 L2 : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 17
- 18. Q.65 Which of the following is most acidic ? CH2OH OH OH OH O2N NO2 (A) (B) (C) (D) CH3 NO2 NO2 NO2 NO2Q.66 Which of the following statement is correct regarding ortho-nitrophenol. (A) It has intramolecular hydrogen bonding (B) It has more volatile nature as compare to para-nitrophenol (C) It has less viscous nature as compare to para-nitrophenol (D) All above statements are correct 1Q.67 If Kp for a reaction is 102 atm 2 at 500 K. Magnitude of KC in mol–2 l2 will be 9 [Take R = 0.08 atm l K–1 mol–1] 16 (A) 3 × 10–1 (B) .02 (C) (D) date insufficient 9Q.68 Which of the following is correct order of basic strength ? – – – – (I) HC C (II) N H2 (III) OH (IV) CH3 (A) IV > I > II > III (B) II > III > IV > I (C) IV > II > I > III (D) IV > III > II > I : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 18
- 19. Q.69 Which is/are amphoteric oxide(s) ? (A) BeO (B) SnO (C) ZnO (D) All of theseQ.70 The number of maximum possible spectral lines obtained in Balmer series when electron make transition from 6th excited state to ground state is. (A) 5 (B) 4 (C) 15 (D) 21Q.71 Which of the following compound is aromatic ? O (A) (B) (C) (D) O OQ.72 (A), (B) and (C) are different elements which belongs to third period in periodic table. Oxide of (A) is ionic, oxide of (B) is amphoteric and oxide of (C) is a gaint molecule, then which of the following order of atomic number of (A), (B) and (C) is correct. (A) (C) < (B) < (A) (B) (A) < (C) < (B) (C) (A) < (B) < (C) (D) (B) < (A) < (C)Q.73 Calculate K.E. (in eV) of e– in H-atom having velocity approximately 7.2 × 105 m/s (A) 13.6 (B) 0.85 (C) 1.51 (D) 3.4Q.74 Which of the following compound have maximum enol content ? (A) CH3 – C – C – CH3 (B) CH3 – C – CH2 – C – CH3 || || || || O O O O O (C) (D) Ph – C – CH2 – C – CH3 || || : Rough Space : O O Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 19
- 20. Q.75 EN of the element (A) is E1 and ionisation pontential is E2, hence electron affinity will be (E1 E 2 ) (A) E1 – E2 (B) 2E1 – E2 (C) E`1 – 2E2 (D) 2Q.76 100 ml mixture of C2H6, C3H8, C2H4 contain C3H8 20% by volume. If mixture is allow to burn with excess of air, find the volume of CO2(g) produce. Given all the volume of gases are measured under similar condition of temp and pressure (A) 220 ml (B) 100 ml (C) 200 ml (D) data insufficientQ.77 Find out the correct relation between the given pair ? O O (A) Geometrical isomer (B) Metamer (C) Position isomer (D) Functional group isomerQ.78 Which of the following element belongs to transition element (A) T (B) Te (C) Ti (D) ThQ.79 Volume occupied by one mole of CO2 gas molecules is 0.01 L. If 220 g CO2 is placed in 10 L container, then the free volume occupied by 220 g of CO2 is (A) 10 l (B) .01 l (C) .04 l (D) 9.8 l : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 20
- 21. Q.80 Which of the following pair/pairs of compounds represent correct relationship ? O O || || (I) CH3 – C – C – CH3 and CH3 – CH2 – CH2 – C – CH3 (Metamer) | CH 3 (II) CH3 – CH – NH – CH3 and CH3 – CH2 – CH2 – NH – CH3 (Position isomer) | CH 3 (III) CH3 – CH2 – NH – CH2 – CH3 and CH3 – CH2 – CH2 – NH – CH3 (Metamer) CH3 | (IV) CH3 – CH2 – N – CH3 and CH3 – CH2 – CH2 – NH – CH3 (Functional isomer) (V) and (Geometrical Isomers) (A) I, II, IV (B) II, III, IV and V (C) All are correct (D) V onlyQ.81 An element A has five valence electron and B has seven valence electron which belongs to second short period. A and B form a pentavalent compound. Which type of d-orbitals are participate in their compound (A) dxy (B) dyz (C) d 2 (D) d x 2 y2 z wQ.82 The molality of 40% NaOH solution having density 2 gm/ml is v (A) 7.4 (B) 6.25 (C) 5.75 (D) 8.2 : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 21
- 22. Q.83 Calculate the total number of geometrical isomers possible for the molecule given below : H–N=N N=N–H C=C H–N=N N=N–H (A) 32 (B) 20 (C) 7 (D) 4Q.84 Calculate how many maximum number of atoms are persent in one plane in CF4 molecule (A) 4 (B) 3 (C) 5 (D) 6Q.85 A container X containing He and CH4 in 2 : 1 mole ratio is connected to an evacuated container Y for short time duration. If container Y finally contains 8 moles of He then number of moles of CH4 in container Y will be 1 (A) 2 (B) 32 (C) (D) 1 2Q.86 IUPAC name of Lactic acid is ? (A) Propanoic acid (B) 3, 4-Dihydroxy propanoic acid (C) 2-Hydroxy propanoic acid (D) Propane dioic acidQ.87 Which of the following is incorrect order according to their given property (A) Al Ga (Atomic radii) (B) C < O (Electron affinity) (C) Li < B (Electron affinity) (D) Sn Pb (Ionisation potential)Q.88 If energy of 2nd energy level of Be+3 is –x eV/atom then ionisation energy of Li+2 (in eV/atom) is 9 9 9 9 (A) x (B) x (C)x (D) x 4 4 16 16 : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 22
- 23. OH CH3O NQ.89 HO NH Cl – C Br || O In the given compound number of functional groups (excluding C = C) are ? (A) 5 (B) 8 (C) 6 (D) 7Q.90 Arrange the following atoms in increasing order of ionisation potential. N, P, C, Si, (A) P < Si < C < N (B) Si < C < P < N (C) N = P = C = Si (D) Si < P < C < N : Rough Space : Add : 46, Rajiv Gandhi Nagar, Kota (Raj.) Ph. 9214211999, 9214213666 23

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