WIPRO Placement Paper Candidate Experiences Bangalore-5 Oct 2010
WIPRO Latest IT Fresher Placement Sample Question Paper. 1. When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is such that it acts (a) In the backward direction on the front wheel and in the forward direction on the rear wheel.(b) In the forward direction on the front wheel and in the backward direction on the rear wheel.(c) In the backward direction on both the front and rear wheels.(d) In the backward direction on both the front and rear wheels. Ans. (d) 2. A certain radioactive element A, has a half life = t seconds.In (t/2) seconds the fraction of the initial quantity of the element so far decayed is nearly (a) 29%(b) 15%(c) 10%(d) 45%Ans. (a)3. Which of the following plots would be a straight line ?(a) Logarithm of decay rate against logarithm of time(b) Logarithm of decay rate against logarithm of number of decaying nuclei(c) Decay rate against time(d) Number of decaying nuclei against timeAns. (b)4. A radioactive element x has an atomic number of 100.It decays directly into an element y which decays directly into element z. In both processes a charged particle is emitted. Which of the following statements would be true? (a) y has an atomic number of 102(b) y has an atomic number of 101(c) z has an atomic number of 100(d) z has an atomic number of 101 Ans. (b)5. If the sum of the roots of the equation ax2 + bx + c=0 is equal to the sum of the squares of their reciprocals then a/c, b/a, c/b are in (a) AP(b) GP(c) HP(d) None of theseAns. (c) 6. A man speaks the truth 3 out of 4 times. He throws a die and reports it to be a 6. What is the probability of it being a 6? (a) 3/8(b) 5/8(c) 3/4(d) None of the aboveAns. (a) 7. If cos2A + cos2B + cos2C = 1 then ABC is a (a) Right angle triangle(b) Equilateral triangle(c) All the angles are acute(d) None of these Ans. (a) 8. Image of point (3,Cool in the line x + 3y = 7 is (a) (-1,-4)(b) (-1,4)(c) (2,-4)(d) (-2,-4)Ans. (a) 9. The mass number of a nucleus is(a) Always less than its atomic number(b) Always more than its atomic number(c) Sometimes more than and sometimes equal to its atomic number(d) None of the aboveAns. (c) 10. The maximum KE of the photoelectron emitted from a surface is dependent on (a) The intensity of incident radiation(b) The potential of the collector electrode(c) The frequency of incident radiation(d) The angle of incidence of radiation of the surfaceAns. (c) 11. Which of the following is not an essential condition for interference (a) The two interfering waves must be propagated in almost the same direction or the two interfering waves must intersect at a very small angle (b) The waves must have the same time period and wavelength(c) Amplitude of the two waves should be the same(d) The interfering beams of light must originate from the same sourceAns. (c) 12. When X-Ray photons collide with electrons (a) They slow down(b) Their mass increases(c) Their wave length increases(d) Their energy decreasesAns. (c) 13. An electron emits energy (a) Because its in orbit(b) When it jumps from one energy level to another(c) Electrons are attracted towards the nucleus(d) The electrostatic force is insufficient to hold the electrons in orbitsAns. (b) 14. How many bonds are present in CO2 molecule? (a) 1(b) 2(c) 0(d) 4Ans. (d)15. In a balanced chemical equation (a) Atoms are conserved(b) Molecules are conserved(c) Moles are conserved(d) Reactant and product molecules are preservedAns. (a) 16. How many grams of NaOH will react with 0.2 equivalent of HCl? (a) 0.59(b) 0.285(c) 1.18(d) none of these Ans. (a)17. Which of the following is least acidic (a) Ortho-cresol(b) Para-cresol(c) Phenol(d) Meta-cresolAns. (b) 18. In Reimer-Tiemann's reaction, the reaction intermediate is (a) Carbene(b) Dichloro carbene(c) Carbonion(d) Carbonium ionAns. (b)19. Which of the following is most acidic? (a) C2H5OH(b) CH3CHOHCH3(c) Ethanol(d) CH3OHAns. (b) 20.A catalyst(a)always slows down the reaction(b)always starts a rection that would not have ocurred at all otherwise(c)causes changes in the rate of the reaction(d)changes the quantities of the products formedAns. (c) 21.The rate of the first order reaction depends on the (a) Concentration of the reactant(b) Concentration of the product(c) Time(d) TemperatureAns. (d)22. The most abundant element in the universe is (a) Hydrogen(b) Helium(c) Oxygen(d) SiliconAns. (a) 23. Integrate 3x + 5 / (x3-x2-x+1)(a) 1/2 log | (x+1)/(x-1) | - 4/(x-1)(b) log |2+tanx|(c) -(1+logx)/x(d) 2 log|(tanx)/(tanx+2)Ans. A 24. If y=cos-1(cosx + 4sinx)/(17)1/2, then dy/dx is (a) 0(b) 1(c)-1(d) none of theseAns. (b)25. If the sum of n terms of two series of A.P are in the ratio 5n+4:9n+6. Find the ratio of their 13th terms (a) 129/231(b) 1/2(c) 23/15(d) None of the above Ans. (a)26. If the letters of the word "rachit" are arranged in all possible ways and these words are written out as in a dictionary, what is the rank of the word "rachit". (a) 485(b) 480(c) 478(d) 481Ans. (d)27. Ravi's salary was reduced by 25%.Percentage increase to be effected to bring the salary to the original level is (a) 20%(b) 25%(c) 33 1/3%(d) 30%Ans. (c) 28. A and B can finish a piece of work in 20 days .B and C in 30 days and C and A in 40 days. In how many days will A alone finish the job (a) 48(b) 34 2/7(c) 44(d) 45 Ans. (a) 29. How long will a train 100m long traveling at 72kmph take to overtake another train 200m long traveling at 54kmph (a) 70sec(b) 1min(c) 1 min 15 sec(d) 55 secAns. (b) 30. What is the product of the irrational roots of the equation (2x-1)(2x-3)(2x-5)(2x-7)=9? (a) 3/2(b) 4(c) 3(d) 3/4Ans. (a)31. Which of the following parameters is the same for molecules of all gases at a given temperature? (a) Mass(b) Momentum(c) Speed(d) Kinetic energyAns. (d) 32. A solid is completely immersed in liquid. The force exerted by the liquid on the solid will (a) Increase if it is pushed deeper inside the liquid(b) Change if its orientation is changed(c) Decrease if it is taken partially out of the liquid(d) None of the aboveAns. (c) 33. Select the correct statements (a) A simple harmonic motion is necessarily periodic(b) An oscillatory motion is necessarily periodic(c) A periodic motion is necessarily oscillatory(d) All of the aboveAns. (a)34. An electron is injected into a region of uniform magnetic flux density with the components of velocity parallel to and normal to the flux. What is the path of the electron? (a) Helix(b) Parabola(c) Circle(d) RectangleAns. (a) 35. A constant voltage is applied between the 2 ends of a uniform metallic wire. Some heat is developed in it. The heat developed is doubled if (a) both the length and radius of the wire are halved.(b) both the length and radius of the wire are doubled(c) the radius of the wire is doubled(d) the length of the wire is doubledAns. (b) 36. If Young's double slit experiment is performed in water(a) the fringe width will decrease(b) the fringe width will increase(c) the fringe width remains unchanged(d) there will be no fringe Ans. (a)37. The shape of a spot of light produced when bright sunshine passes perpendicular through a hole of very small size is (a) Square, because the hole is a square(b) Round, because it is an image of the sun(c) Round with a small penumbra around it(d) Square with a small penumbraAns. (b)Select the alternative that logically follows from the two given statements.38. Some forms are booksAll books are made of paper(a) Some forms are made of paper(b) Some forms are not made of paper(c) No forms are made of paper(d) None of the aboveAns. (a) 39. All toffees are chocolatesSome toffees are not good for health(a) Some chocolates are not good for health(b) Some toffees are good for health(c) No toffees are good for health(d) Both (a) and (b)Ans. (a)The questions 40-46 are based on the following pattern.The problems below contain a question and two statements giving certain data. You have to decide whether the data given in the statements are sufficient for answering the questions.The correct answer is (A) If statement (I) alone is sufficient but statement (II) alone is not sufficient.(B) If statement(II) alone is sufficient but statement(I) alone is not sufficient.(C) If both statements together are sufficient but neither of statements alone is sufficient.(D) If both together are not sufficient.(E) If statements (I) and (II) are identical.43. If a ground is rectangular, what is its width?(I) The ratio of its length to its breadth is 7:2(II) Perimeter of the playground is 396 mts.Ans. C 44. If the present age of my father is 39 yrs and my present age is x yrs, what is x?(I) Next year my mother will be four times as old as i would be.(II) My brother is 2 years older than I and my father is 4 years older than my mother.Ans. C45. How many brothers and sisters are there in the family of seven children? (I) Each boy in the family has as many sisters as brothers(II) Each of the girl in the family has twice as many brothers as sistersAns. D46. x is not equal to 0, is x + y = 0?(I) x is the reciprocal of y(II) x is not equal to 1Ans. A Following questions are based on letter's analogy.First pair of letters should have the same relationship as the second pair of letters or vice versa. 47. ? : BGLQ : : YDIN : VAFK (a) EKNS(b) DKMT(c) DLMS(d) EJOTAns. (d)48. NLO : RPS : : ? : ZXA (a) VUW(b) VTR(c) VTW(d) TRPAns. (c)49. If "segment" is coded as rffndou, then "ritual" is coded as (a) shutbm(b) qjutbk(c) qhutbk(d) qhubtkAns. (c)50. If "football" is "cricket" ,"cricket" is "basketball" ,"basketball" is "volleyball","volleyball" is "khokho" and "khokho" is cricket, which is not a ball game? (a) cricket(b) football(c) khokho(d) basketballAns. (a)51. Which of the following is a recursive set of production(a) S --> a|A, A --> S(b) S --> a|A, A --> b(c) S -->aA, A-->S(d) None of theseAns. (c)
2009-2016 downloadmela.com. All rights reserved.