sample paper 1

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1. Specific heat is defined as the amount of heat required to a) raise the temperature of a body by 273 ºC b) change the temperature of a unit mass of a body through 1ºC c) change the state of unit mass of a body d) change the temperature of a unit mass of a body through 212 ºF 2. The volume of gas a) is always independent of pressure b) is proportional to temperature at constant pressure c) is proportional to pressure at constant temperature d) both b) and c) 3. On heating, the viscosity of liquids generally a) decreases b) increases c) remain constant d) it depends upon the liquid e) Viscosity is not defined the liquid. 4. The centripetal force of a body having mass m and rotating at a speed of v in a circle of radius r is given by. a) mvr b) mrv² c) mv²/r d) mv/r² e) None of the above. 5. The unit of specific gravity in S.I unit is a) g/cm³ b) kg/m3 c) g/liter d) kg/liter e) None of the above. 6. Four samples of different materials having the same mass were noted to have the following volumes, 5cc, 10cc, 3cc and 19cc. which of them is more dense. a) The one having volume 5cc. b) The one having volume 10cc. c) The one having volume 3cc. d) The one having volume 19cc. e) None of the above. 7. The density of water is max. at about

Transcript of sample paper 1

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1. Specific heat is defined as the amount of heat required toa) raise the temperature of a body by 273 ºCb) change the temperature of a unit mass of a body through 1ºCc) change the state of unit mass of a bodyd) change the temperature of a unit mass of a body through 212 ºF

2. The volume of gasa) is always independent of pressureb) is proportional to temperature at constant pressurec) is proportional to pressure at constant temperatured) both b) and c)

3. On heating, the viscosity of liquids generallya) decreasesb) increasesc) remain constantd) it depends upon the liquide) Viscosity is not defined the liquid.

4. The centripetal force of a body having mass m and rotating at a speed of v in a circle of radius r is given by.

a) mvrb) mrv²c) mv²/rd) mv/r²e) None of the above.

5. The unit of specific gravity in S.I unit isa) g/cm³b) kg/m3c) g/literd) kg/litere) None of the above.

6. Four samples of different materials having the same mass were noted to have the following volumes, 5cc, 10cc, 3cc and 19cc. which of them is more dense.

a) The one having volume 5cc.b) The one having volume 10cc.c) The one having volume 3cc.d) The one having volume 19cc.e) None of the above.

7. The density of water is max. at abouta) 0 ºCb) 2 ºCc) 4 ºCd) 6 ºCe) none of above

8. The amount of heat produced when unit mass of a solid fuel is completely burnt in normal condition is called

a) Specific heat of fuel.b) Co-efficient of fuelc) Caloric value of fuel.d) none of above

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9. Running cost of nuclear power plant. a) Is more than a hydal power plant of the same power capacity?b) Is less than a hydal power plant of the same power capacity?c) Is equal than a hydal power plant of the same power capacity.d) May be any one of above depending upon the conditionse) None of above

10. Pakistan has a nuclear power plant, presently in running condition ata) Chashmab) Khushabc) Karachid) Both a) and c)e) None of above

11. If water flows at rate of 360 t/h in a pipe having a crossection area of 0.1m², the velocity is

a) 360 m/sb) 36 m/sc) 3.6 m/sd) None of above

12. One horse power is equal toa) 647 wattb) 467 wattc) 746 wattd) 0 watte) None of above

13. The unit of torque in S.I. unit isa) Newton-meterb) Joulec) Newton/meterd) Joule/metere) None of above

14. The linear speed of a body revolving at 1200 rpm in a circular path of 0.8m radius would be nearest to

a) 400m/sb) 300 m/sc) 200 m/sd) 100m/se) 80 m/s

15. The unit of universal gas constant R is a) Kb) Joulec) M³d) Joules/mol.Ke) None of above

16. When a heavy nucleus breaks into two or more nuclei with release energy, the process is known as

a) Fusionb) Fissionc) Enrichmentd) Radiatione) None of above

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17. γ-rays havea) +ve chargeb) –ve chargec) both chargesd) any charge depending upon the energye) no charge

18. An electron is roughlya) 1/1840 times of protonb) 1840 times of protonc) 1840 times of neutrond) both a) and b)e) both b) and c)

19. When an atom emits a particlea) Its atomic number decreased by unityb) Its atomic number increased by unityc) Its mass number decreased by unityd) Its mass number increased by unitye) None of above

20. A nuclear bomb is more dangerous then an equivalent TNT bomb becausea) Of more weightb) Of radiationc) Of bad smelld) Both b) and c)e) None of above

21. Which of the following atoms contains least number of neutronsa) 92U235

b) 92 Np240

c) 92U238

d) 93Np239

22. 6C11 and 5B11 are twoa) isotopesb) isobarsc) isotonesd) isomerse) None of above

23. Which of the following is /are real number(s)a) 0b) -1c) ּהd) √5e) all of above

24. A quadratic equation has alwaysa) Real rootsb) Imaginary rootsc) Equal rootsd) No rootse) None of above

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25. Log 124 is a) Greater than 0 and less than 1b) Greater than 1 and less than 2c) Greater than 2 and less than 3d) Greater than 3 and less than 4e) None of above

26. If we consider the earth to be a sphere of radius 6400 km, its volume will bea) )6400ּה( 4 Kmb) 3 )6400ּה( Kmc) )6400ּה ( (3/4) Kmd) )6400ּה ( (4/3) Kme) None of above

27. If y is the function of x as given in fig.1 then a) 1b) 0c) -1d) 0.5e) none of above

28. Sin²θ + Cos²θ =a) 0b) ּהc) ּה2d) 10e) none of above

29. x³ +y³ =a) (x-y)(x²+xy+y²) b) (x+y)(x²-xy +y²)c) (x+y)(x²+xy+y²)d) None of above

30. The equation x + y – 7 = 0a) A circleb) A parabolac) A straight lined) An arce) none of above

31. The slope of the equation y – x² + 7 =0 isa) -1b) +1c) 0d) 2xe) none of above

32. The max. value of sin (0) isa) 0b) 2c) 10d) none of above

33. The probability to draw a queen from a deck of 52 cards isa) 52b) 13c) 4d) 1:3

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e) none of above

34. How many possibilities are there to select a team of three members from 6 playersa) 2b) 3c) 10d) 20e) none of above

35. A bus leaves at 7 o clock with an average speed of 60 km/h. a car leaves the same station at 9 o clock with an average speed of 90 km/h. at time will the car catch the bus.

a) 11 O’ clockb) 12 O’clockc) 1 O’ clockd) 30 past 1 O’ clocke) none of above

36. Two charged particlesa) Always attract each otherb) Always repel each otherc) Attract or repel each other, depending upon nature of chargesd) Have always no effect on each othere) none of above

37. Oil in the transformer is used fora) Lubrication purposesb) Cooling and insulationc) Killing the germsd) All of abovee) none of above

38. Load shedding is mainly done toa) Store electrical energy for later useb) Increase electrical energy in gridc) Reduce energy lossesd) All of abovee) none of above

39. How much current(I) will flow after a long time in given circuita) 6Ab) 3Ac) 2Ad) 0Ae) none of above

40. In semi conductor the current flows due toa) Protonsb) Ionsc) Neutronsd) All of abovee) none of above

41. The power factor of a pure capacitive circuit isa) -1b) 0c) +1d) 0.5e) none of above

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42. A dry cell only can givea) D.C. voltageb) A.C. voltagec) Both a) and b)d) Pulsating D.C.e) none of above

43. Diodes is a device whicha) Covert D.C. to A.C.b) Block A.C. completelyc) Allow flow of current in only one directiond) All of abovee) none of above

44. Transformer is device, which cana) Increase the electrical energyb) Increase the voltagec) Increase the currentd) Both b) and c)e) none of above

45. Electrical motors draw---------- current during startupa) Nob) Lessc) Mored) Ratede) none of above

46. In metallic conductors, current flows due toa) Ionsb) Protonsc) Neutronsd) All of abovee) none of above

47. The relation between frequency (f) and time period (T) of a wavea) F = 2Tb) F = 1/ Tc) T = 2d) F = Te) none of above

48. In domestic wiring, a switch is always placed in a) Earth wireb) Neutral wirec) Live wired) Any of abovee) none of above

49. The resistance of copper wirea) Increases with increase in temperatureb) decreases with increase in temperaturec) is independent of temperatured) may increase or decrease with temperature depending upon the lengthe) none of above

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50. The equivalent capacitance across A & B in the given fig isa) 8µfb) 2µfc) 4µfd) 16µfe) none of above

51. The equivalent resistance across A & B in the given fig isa) 5b) 22c) 18d) 2e) none of above

52. Choose fourth number of the team of Abbbat. Altama) Akramb) Anwarc) Amand) Alie) ijaz

53. Separate the odd number from apple, peach, carrot, mangoa) Appleb) Peachc) Carrotd) Mangoe) none of above

54. Separate the odd number from crow, cow, owl, swana) Crowb) Cowc) Owld) Swane) No one is odd

55. Complete the series 18,32,50,72,-----a) 100,127b) 98, 128c) 110, 138d) 92, 111e) none of above

56. Atomic mass number is equal toa) The number of protonsb) The number of neutronsc) The sum of the number of protons and neutronsd) The number of electronse) none of above

57. A chemical reaction is that in whicha) Nuclei of atoms are changedb) Only electrons are involved and no change in nucleic) Both electrons and nuclei are involvedd) Only state of matter is changede) none of above

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58. An exothermic chemical reaction is thata) In which energy is releasedb) In which energy is absorbedc) In which energy is neither released nor absorbed which can take place at room

temperature59. The number of electrons in the last shell of oxygen (atomic number is 8) is

f) 2g) 4h) 6i) 8j) none of above

60. The max. value of pH for any solution isa) 1b) 10c) 100d) 1000e) none of above

61. Which of the following is organic compounda) Glassb) Ironc) Plasticd) Cemente) none of above

62. Identify as chemical changea) Burning of woodb) Melting of icec) Braking of glassd) Both a) and b)e) Both a) and c)

63. Identify as acida) H3BO3

b) HOHC) CH3CLD) H2O2

e) All of above64. Isotopes are those atoms which

a) Have same atomic weight and different atomic numberb) Have same atomic number and different atomic weightc) Have equal no. of proton and neutrond) Have same valency numbere) none of above

65. Periodic table is arranged according to a) Mass of electronb) Atomic number of elementsc) Color of elementsd) Odour of elemente) none of above

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66. If x=at +bt² where x is in meter and t in hour, the unit of b will bea) m²/hrb) m/hr²c) m/hrd) me) none of above

67. A galvanometer is a device whicha) Measuring currentb) Measuring chargec) Detects currentd) none of above

68. A barometer is used toa) Measure the pressure of liquidsb) Measure the amount of heatc) Measure the atmospheric pressured) See objects at long distancee) none of above

69. A manometer is used toa) Measure the pressure of liquidsb) Measure the amount of heatc) Measure the atmospheric pressured) See objects at long distancee) none of above

70. A calorimeter is a device by which can a) Measure the pressure of liquidsb) Measure the amount of heatc) Measure the atmospheric pressured) See objects at long distancee) none of above

71. Light year is unit ofa) Light intensityb) Very long timec) Weightd) Powere) none of above

72. Megger is used to measurea) Voltageb) Currentc) Charged) Powere) none of above

73. 1+1+1 in binary number equal toa) 0b) 1c) 10d) 11e) none of above

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74. What is the decimal equivalent to binary 111a) 0b) 1c) 10d) 11e) none of above

75. If a binary number then A + Ā =a) Ab) Āc) 0d) 1e) none of above

76. The gauge pressure at the top of K2 is equal toa) Equal to zerob) Less than zeroc) > zerod) equal to 100 Mpae) none of above

77. A packet is dropped from an aero plane flying at a constant speed V m/s, the speed of packet just before reaching the ground will be

a) Greater than vb) Less than vc) Equal to vd) Can be any one of the above depending upon height from the earthe) Can not be compared with given data

78. A body moving at constant velocity has acceleration equal toa) 9.81 m/s²b) -9.81 m/s²c) 6.67*103 m/s²d) 9.0*103 m/s²e) none of above

79. Power is defined as a) Force * distanceb) Force/distancec) Work * timed) Work done per unit timee) none of above

80. Which of the following is / are Vector quantity?a) Forceb) Velocityc) Weightd) All of above

81. The hardest substance known isa) Goldb) Diamondc) Tungstend) Platinume) none of above

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82. The dot product of two rectangular components of a vector is a) equal to the vector itselfb) equal to the square of the vectorc) equal to half of vectord) none of above

83. Density of a body is defined asa) mass per unit areab) volume per unit areac) area per unit volumed) mass per unit volumee) none of above

84. A heavy and light body having equal kinetic energies, which one has greater momentum?

a) Heavy bodyb) Light bodyc) Both have same momentumd) No one has momentume) It can not be ascertained from the given data

85. If the density of the earth were double of the present, the value of gravitational acceleration g would be

a) Same as presentb) Double of presentc) Half of presentd) Four times of presente) none of above

86. Which substance is the most elastic?a) Rubberb) Brassc) Glassd) Steele) none of above

87. Efficiency of a practical machine is alwaysa) equal to 100b) > 100c) < 100d) equal to zeroe) none of above

88. The S.I. unit of co-efficient of linear expansion isa) m/ ºCb) ºC/mc) Md) ºCe) none of above

89. One mole of H2 and one mole of O2 at same temperature and pressure containa) have same massb) have same volumec) have same number of moleculesd) both a) and b)e) both b) and c)

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90. Conduction heat transfer through a body depends upona) area of bodyb) thickness of bodyc) length of bodyd) all of abovee) none of above

91. First law of thermodynamics is described bya) ∆Q = ∆W + ∆Ub) ∆W = ∆Q + ∆Uc) ∆U = ∆Q + ∆Wd) all of abovee) none of above

92. The heat reaches to a man sitting nearby fire througha) conductionb) radiationc) convectiond) all of abovee) both a) and b)

93 The boiling point of water at siachin will be a) Equal to Karachib) Greater than Karachic) Less than Karachid) It depends upon the surrounding temperaturee) none of above

94. The Celsius degree (ºC) is a) > ºFb) < ºFc) = ºFd) Celsius and Fahrenheit are one and samee) No direct relation between the above

95 Thermometer directly tell us abouta) The amount of heat in bodyb) The degree of hotness or coldness of the bodyc) The difference of temperature from the environmentd) All of abovee) none of above

96. RTD is an instrument to measure a) flowb) temperaturec) resistanced) pHe) none of above

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1. A bomber drops a bomb from an aircraft flying at 2000Km/h with an altitude of 7 Km. The speed at which the bomb will strike the earth would be.

a) Greater than 2000Km/hb) Less than 2000 Km/hc) Equal to 2000 Km/hd) Can not compare with the given data

2. The velocity of a body was noted to be a constant during 5 minuets of its motion. What was its acceleration during this interval?

a) 9.81m/s²b) -9.81m/s²c) 6.67*10² m/s²d) 0

3. Which of the following is / are Vector quantity?f) Forceg) Velocityh) Weighti) All of above

4. If V1 and V2 be two vectors at 90º from each other, having magnitudes of 10 and 20 units each. What will be the value of V1*V2.

a) Equal to 200b) Equal to 10c) Equal to 20d) Equal to 0

5. Four samples of different materials having the same mass were noted to have the following

volumes, 5cc, 10cc, 3cc and 19cc. which of them is more dense.f) The one having volume 5cc.g) The one having volume 10cc.h) The one having volume 3cc.i) The one having volume 19cc.

6. The centripetal force of a body having mass m and rotating at a speed of v in a circle of radius r is given by.

f) mvrg) mrv²h) mv²/ri) mv/r²

7. The unit of specific gravity in S.I unit isf) g/cm³g) kg/m3h) g/literi) kg/liter

8. Temperature of 100 ºC is equal toa) 100 ºFb) 212 ºFc) 112 ºF

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d) 5 ºF

9. Specific heat is defined as the amount of heat required toe) raise the temperature of a body by 273 ºCf) change the temperature of a unit mass of a body through 1ºCg) change the state of unit mass of a bodyh) change the temperature of a unit mass of a body through 212 ºF

10. The volume of gasa) is always independent of pressureb) is proportional to temperature at constant pressurec) is proportional to pressure at constant temperatured) both b) and c)

11. On heating, the viscosity of liquids generallyf) decreasesg) increasesh) remain constanti) it depends upon the liquid

12. A chemical compound having only carbon and hydrogen is calleda) sulfuric acidb) hydrocarbonc) hydrided) all of above

13. Which of the following is / are Halogensa) chlorineb) iodinec) bromined) all of above

14. Atomic no. of an atom is the no. ofa) protonsb) electronsc) neutronsd) protons or electrons

15. Atmosphere pressure is equal toa) 14.7 psib) 760 mm of Hgc) none of aboved) a) and b)

16. Boiling point of water decreases due to a) decrease in pressureb) increase in pressurec) both A) and b)d) none of the above

17. Cane sugar is mainly composed of a) sucroseb) sodium chloridec) iodined) none of above

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18. Which of the following is / are Vector quantity.a) Accelerationb) Velocityc) Forced) All of above

19. If a body fall free under gravity, the gravitational acceleration will be equal toa) 9.8 m/s²b) -9.8 m/s²c) -8.9 m/s²d) none of above

20. Multistage centrifugal pump are used to givea) high dischargeb) high headc) all of aboved) none of above

21. The temperature at which the volume of the gas theoretically become zero is calleda) absolute zerob) absolute zero temperaturec) freezing pointd) boiling point

22. A vessel used for producing steam is called.a) Turbine b) Boilerc) Condenserd) Steam ejector

23. (a +2b) ² =a) a² + b² +2abb) a² + 4b² +8abc) a² +4b² +4abd) a² +b² -4ab

24. if A and B be two matrices such that A= and B = the “A-1=B”

a) the statement is false because inverse of 3*2 matrix is not possibleb) the statement is false because A-1 has some other value than the given abovec) the statement may be false or true depending upon the values of a,b and x,yd) the statement is truee) none of above

25. A swimmer can swim with an average speed of 9 km/h in still water. What would be his net speed, if he crossing a river flowing at 20 km/h. trying in swim straight along the breadth of the river.

a) about 22 Km/hb) exactly 20 Km/hc) about 18 Km/hd) none of above

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26. Two 200 W bulbs have been connected in series with each other. What would be the power of each bulb now?

a) 100 Wb) 200 Wc) 50 Wd) 400 We) none of the above

27. The unit of solid angle isa) solid angleb) radianc) sic radiand) candelae) none of above

28. LPG stands fora) Liquid petroleum gasb) Low performance gasc) None of above

29. A speaks truth in 75 percent cases. Bin 80 percent of the cases. In what percentage of cases they likely to contradict each other in narrating same incident.

a) 35) 10c) 25d) 45e) none of above

30. A moving coil galvanometer can be used as an ammeter by adding.a) A series resistance with its coilb) a parallel resistance with its coilc) a diode in series with its coild) a diode with parallel with its coil

31. Thermal parameters can measured by a) RTDb) Thermocouplec) Bi-metallic stripd) All of above

32. The working of thermocouple is based upon the principle calleda) See back effectb) Newton’s lawc) Thomson effectd) Photoelectric effect

33. For a liquid flowing through a tube, Bernoulli’s theorem at a point states that.a) Sum of pressure energy, P.E. and K.E are constantb) Sum of pressure energy, P.E. and K.E are variablec) P.E. and K.E are constant onlyd) None of above

34. The range of temperature on Kelvin scale can bea) -273º to 273ºb) 0º to 373ºc) 0º to 273ºd) -100º to 100º

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35. Vacuum can be measured with the help of aa) pyrometerb) strip meterc) induction meterd) Borden gauge

36. Electromagnetic induction principle is employed in a) moving coil instrumentationb) Borden tubec) aneroid barometerd) flow venture

37. A galvanometer can be converted into a voltmeter by placinga) shunt resistance with its coilb) series resistance with its coilc) voltage can directly be measuredd) voltage can not be measured with the help of a galvanometer

38. A Geiger-Muller tube is used fora) flow rate measurement of gasesb) flow rate measurement of volatile liquidc) measurement of very high voltaged) detection of ionizing radiation

39. The arrangement of resistances (r1, r2, r3, r4) and a galvanometer (g) in figure is called.a) Kickoff’s apparatusb) Wheatstone bridgec) Wheat maible bridged) voltammeter