Transcription
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-74183341. If during circular motion, tangential velocity of a body becomes double then centripetal forcebecomes:a. Doubleb. One halfc. Four timesd. One fourthSol: Fc mv2/rFc, m(2v)2/rFc, m4v2//rFc, 4 mv2/rFc, 4Fc2. Under what condition an object will have zero displacement but non zero distance?a. Linear motionb. Circular motionc. Random motiond. OsciallationSol: when body moves in a circular, after one complete revolution, as the body return toits original position so displacement becomes zero while the distance has been coveredby the body.3. Which one of the following properties is not exhibited by the longitudinal waves?a. Interferenceb. Reflectionc. Diffractiond. PolarizationSol: polarization is the property that are only exhibited by transverse waves not thelongitudinal waves. In which two plane wave is converted to one plane.4. The speed of sound in air is 332m/s. the speed of sound at 22oC will be:a. 345.2 m/sb. 340 m/sc. 350 m/sd. 330 m/sSol: speed of sound at 0oC 332 m/s speed formula for sound: V 0.6 T, speed of soundat 200C 332 0.6(20) 3445. Astronomers calculate speed of dstant stars and galaxies using which of the followingphenomena?a. Beatsb. Interferencec. Super position principled. Doppler effectSol: Doppler Effect is used to calculate speed of distant stars and galaxies. Because somestarts are moving towards observed and others away and by Doppler effects we cancalculate star speed.6. In a ripple tank, 40 waves pass through a certain point in 1 second. If the wavelength of thewave is 5 cm, then speed of the wave is:
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334a.b.c.d.0.5 ms-11 ms-11.5 ms-12 ms-1Sol: f 40 waves/s, λ 5cm 0.05m, V fλ 40 x 0.05 2m/s7. In which process the entire of heat supplie to the gas is converted to the internal energy ofthe gas?a. Isochoric processb. Isoharic processc. Isothermal processd. Adiabatic processSol: in isochoric process the volume remains constant, sot the heat applied is converted tointernal energy.Δq U p V as V 0 so Δq USol: in isothermal process the internal energy remains constant so thetemperature remains constant. In isochoric process, the volume remainsconstant, in isobaric process, the pressure remains constant. In adiabaticprocesss the heat transfer is zero. In isoentropic process, the entropy remainsconstant.In isoenthalpic process, the enthalpy remains constant.8. The internal energy of a system during an isothermal process:a. Decreaseb. Increasec. Becomes zerod. Remain constantSol: in isothermal process the internal energy remains constant so thetemperature remain constant. In isochoric process, the volume remains constant.Isobaric process, the pressure remains constant. In adiabatic process the heattransfer is zero. In isoentropic process, the entropy remains constant.9. If the potential at a point which is 1m from a charge is 1 volt, them the potential ata pont which is 2m from the same charge will be:a. 2vb. 1vc. 0.5vd. 3vSol: electric potential is given by V kQ/r as V is inversely proportional to r so bydoubling the R(1m 2m), the electric potential will become half (1 volt 0.5volt)V kQ/rV, KQ/2rV, (1/2)kQrV, ½ VV, ½(1)V, 0.5 volt10. The values of electric intensity will due to the presence of dielectric medium:a. Increaseb. Decrease
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334c. Increase exponentiallyd. Remain sameSol: the strength of the electric field is reduced due to the presense of dielectric.If the total charge on the plates is kept constant. Then the potential difference isreduced across the capacitor plates.11. The slope of distance – time graph will always be:a. Negaticeb. Positivec. Zerod. MaximumSol: the slope of distance –time graph will always be positive because distancecan never be negatice.12. At what angle of projection of a projectile the range becomes half of its maximumvalue?a. 14ob. 20oc. 20od. 40oSol: R vi2 sin2Ø/gAt given condition: for maximum range sin 2Ø 1 which is possible if we put Ø 45No get sing 2Ø value 0.5 we will put angle 15 so sin 2Ø sin2(15) sin 3Ø ½R, vi2 (1/2)/gR, (1/2) vi2/g R, ½ Rmax13. If we drop an object, its initial velocity is zero. How far will it fall in time ‘t’?a. 9.8 t2b. 4.9 t2c. 0.49 t2d. 98 t2Sol: we know that s vit ½ at2 if initial velocity as zeroS 0 ½ (9.8( t2S 0.49 t214. The newton-second is unit of:a. Workb. Powerc. Impulsed. MomentumHint: impulse J FtJ Newton second15. A 1.75m heighted weight- lifter raises weight with a mass of 50kg to a height of0.5m above his head, how much work is being done by him? (g 10m-2)a. 2125 Jb. 2500 Jc. 50 Jd. 1225 JSol: non of the given option is correctHeight 0.5m mass 50kg g 10ms-1 work done P.E mgh 50x10x0.5 500x0.5 250
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-741833416. What is the speed of 2.9 kg metallic b ob at mean position of a simple pendulum,when release from its extreme position 0.5 m high? (g 10m-2)a. 3.16 ms-1b. 10 ms-1c. 100 ms-1d. 50 ms-1Sol: at extreme total energy P.E – mgh 2x10x0.5 10 JAt means position total energy K.E 10 ½ mv210 ½ mv2 Mv2 20 2v2 2- v2 10 3.117. When the speed of your car is halved, by what factor does its kinetic energydecreases?a. ½b. ¼c. 1/8d. 1/6Sol: K.E ½ mv2As velocity reduced to half then K.E ½M(1/2)2 ½ mv2/4 ¼ ½ mv2 ¼ k.E18. Which one of the following force in non conservative force?a. Frictional forceb. Gravitational forcec. Electric forced. Elastic spring forceSol: frictional force is non conservative field while elastic string force, electric,magnetic and gravitational fields are constant19. The earth rotates on its axis once a day. Suppose, by dome process the earthcontracts so that its radius is only half as large as at present, then how long theearth will take to complete its rotation?a. 24 hoursb. 18 hoursc. 6 hoursd. 12 hoursSol: here we assume that the mass of the earth remains same, moment of theinertia of the earth rotating about its axis is:I 2/5 MeRe2-------(Equation 1)Angular velocity of the earth isω 2π/T ------(Equation 2)when the radius is reduced to half, the enw moment of inertial isI 2/5Me(Re)2 2/5Me(Re/2)2 ------(Equation 3)New time period is T and angular velocity isω, 2π/T,,-------(Equation 4)applying the law of conservation of angular momentum, we getIω I,ω,From equation 1,2,3 and 4 we get22πReMeRe2 x 2/5Me( )2 x 2π/T5𝑇2𝑇 T’ 4
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334But T 24 hoursT’ 244 6 hours20. 1 radian is equal to:a. 57.1ob. 57.2c. 57.3’’d. 57.4oSol: 360o 2π radian 1 radian 360/2π 57.3o21. In transmission from grid station, power losses are maximized by:a. Increasing currentb. Decreasing currentc. Increasing resistanced. Increasing voltageSol: efficient transmission involves reducing the current by stepping up thevoltage prior to transmission, and stepping it down at a substatin at the far end.For AC power transmission the stepping up and down is done usingtransformers.22. The domestic electricity supply has a frequency of:a. 150 Hzb. 100 Hzc. 50 Hzd. 25 HzSol: the domestic electricity supply has a frequency of 50 Hz in Pakistan23. PIV stands for:a. Positive inverse chargeb. Power integrated voltagec. Peak inverse voltaged. Peak integrated voltageSol: PIV stands for Peak inverse voltage.24. In full wave rectification, the dioides are used:a. 1b. 2c. 3d. 4Sol: a full wave rectifier is a circuit arrangement which makes use of both halfcycles of input alternating current (AC) and converts them to direct current (DC).In our tutorial on half wave rectifiers, we have seen that a half wave rectifiermakes use of only one-half cycle of the input alternating current. Thus a full waverectifier is much more efficient (double ) than a half wave rectifier. This processof converting both half cycles of the input supply (alternating current) to directcurrent (DC) is termed full wave rectificationFull wave rectifier can be constructed in 2 ways.The first method makes use of a centre tapped transformer and 2 diodes. Thisarrangement is known as center tapped full wave rectifier.The second method uses a normal transformer with 4 diodes arranged as abridge. This arrangement is known as a bridge rectifier.25. The wavelength associated with an electron is of the order of:
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334a.b.c.d.Visible lightX-raysRadio wavesInfrarefSol: x-rays are commonly produced by accelerating (or decelerating) chargesparticles; examples include a beam of electrons striking a metal plate in an x-raytube and a circulating beam of electrons in a synchrotron particle accelerator orstorage ring. In addition, highly excited atomsm can emit x-rays with discretewavelengths characteristic of the energy level spacins in the atoms. The X-raysregion of the electromagnetic spectrum falls far outside the rankge of visiblewavelengths.26. Which photon carries the most energy?a. Blueb. Violetc. Redd. GreenSol: V I B G Y O RWavelength increase Frequently decrease Energy (E hf) decrease so energy decrease from violet to red. Maximumenergy is that of violet.27. Which one of the following series lies in the ultraviolet region?a. Balmer seriesb. Pascher seriesc. Lyman seriesd. Bracaket seriesSol: lyman series lies in ultra violet regionBalmer series lies in visible regionPaschan series lies in Near IR regionBrackett series lies in Mid IR regionPfund series lies in region Far IR28. The main difference between X-rays and γ rays is:a. Frequencyb. Wave lengthc. Energyd. OriginSol: the key difference is the source: x-rays are emitted by the electrons outside thenucleus, and gamma rays are emitted by the excited nucleus itself, sot he main differenceis that of origin.29. There are initially 400 atoms in a radioactive sample. What of atoms after 3 half-life?a. 400b. 200c. 50d. 25Hint: first half life: 400 200Second half life 200 100Third half life 100 50
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-741833430. Which using radiation theraphy, cancerous thyroid is treated with radioisotope:a. Carbonb. 235 uraniumc. Thoriumd. Iodine-131Sol: radioactive iodine (RAI, also called I-131) can be used to treat thyroid cancer.31. In capacitors, energy is stored in the form of:a. Gravitational energyb. Kinetic energyc. Electric intensity (correct)d. Magnetic inductionSol: both inductor and capacitor store energy while resister radiate or waste energy.Energy is stored in capacitor in form of electrical potential energy or electric intensitywhile in inductor it is stored in the form of magnetic field.32. Ohm time’s farad is equivalent to:a. Time (correct)b. Chargec. Distanced. CapacitorSol: we know that RC is time constant so R T C is also equivalent to time.RTC RCxtime time x time time33. One kilowatt-hours is commonly termed as one commercial uniq of electric energy which isequal to:a. 3.6 x 105 Jb. 3.6 x 106 J (correct)c. 3.6 x 104 Jd. 3.6 x 103 JSol: 1 kwh 103 watt 1 hr 103 watt x 3600 sec 3.6 x 106 Joule34. When a wire is compressed and its radius becomes 2R then its resistance will be:a. 16Rb. 4Rc. 1/16Rd. 1/4RSol: taking volume constant A – cross section area of wire (πrʌ2)L – length of wire.R2 2.r1 (As diameter is doubled)A2 4.A 1This gives . L2 L1/4If radius (diameter) is doubled length becomes one fourth.Resistance is proportional to L/AR2 R1/1635. One of the following is an ohmicdevie:a. Filament bulbb. Semiconductor diodec. Transistord. Copper wire (correct)
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334Sol: filament bulb, thermistor and semiconductor diode are non-ohmic materialswhile metals are ohmic devices or substances.36. The change is resistance of metallic conductor at temperature below 0oC is:a. Non linearb. Curvec. Lineard. CurvilinearSol: the resistance increases as the temperature of a metallic conductorincreases with increase in temperature. The graph between resistance andtemperature is linear for both increasing and decreasing.37. When current are flowing through two long parallel wires in same directionelectric field between them is:a. Strongb. Weakc. Remains constantd. InfiniteSol: the electric field in the middle of both wires are same while the magnetic fieldis weaker as it is opposite in direction and it cancel the effect of each other.38. Magnetic flux is maximum when angle between magnetic field and vector area is:a. 0ob. 90oc. 180od. 45oSol: magnetic flux is the product of the magnetic induction & vector area elementΔØ B.ΔAΔØ B ΔA cosØDirection of the vector area element ΔA is normal to the surface areaThe totatl flux through the surface is given by Ø 𝐵 .ΔA or B.A or Ø B A cos ØCase 1:When magnetic field and area are paralledØ 0Ø B A cos ØØ BA1Ø B A magimum magnetic fluxCase 2:When magnetic field and area are perpendicularØ 90Ø B A cos 90Ø BA0 039. Transformer is device which steps up or steps down the input:a. Currentb. Voltagec. Energyd. PowerSol: a transformer is used to step up and step down voltage. The power is transformer isconstant
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-741833440. If a stationary bar magnet is places near a coil at rest so maximum lines of force passesthrough the coil, the galvanometer shows:a. Maximum currentb. Minimum currentc. No currentd. Intermediate value of currentSol: the current if produced when there is change in flux linkage. As the bar magnet isstationary so there is no change in magnetic flux, so no current will be produced. And asa result the galvanometer will show zero deflection.Chemistry41. Alkyl halides involving –C –X bond breakage and –C –Nu bond formationsimultaneously would follow the mechanisma. SN1b. SN2c. E1d. E242. Secondary alkyl halides is:a.b.c.d. CH3 CI43. R-X on reaction with alcohols forms:a. R-OHb. RORc. R-X-OHd. RH44. IUPAC name of C6H5O ( CH3)2 is:a. 2-Methyl-3-Hexanoneb. 2,6 – Himethyl cyclohexanonec. 3 – Methyl cyclohexanoned. 4 – Methyl – 3- hexanone45. Phenol is known as:a. Carpolic acidb. Carbonylic acidc. Carbolic acidd. Carbolylic acid46. Phenol is more acidic than alcohols because of the following reason:a. Delocalization of negative charge in the OH groupb. Delocalization of positive charge on the carbon atom in ringc. Delicalization of negative charge in the ringd. Delocalization of positive charge on the OH group47. The common name of the following aldehyde isa. α – methyl – Y – chloropropinaldehydeb. β – chloro – a – methyl propionaldehydec. β – chloro – a – methyl propionaldehyded. β – methyl – a – chloropropionaldehyde
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-741833448. which of the following reagent is use to separate and purify carbonyl and non- carbonylcompounds?a. HCNb. BrMgCH3c. NaHSO3d. H2O49. Secondary alcohol is the product of reduction of which carbonyl compound?a.b.c.d.50. Which of the following is the strongest acid?a. Propanic acidb. Flouroethanoic acidc. Trichloroethanoic acidd. Nitroethanoic acid51. Hydrolysis of acyl chloride results in the formation of:a. Acid anhydrideb. Carboxylic acid (correct)c. Amidesd. Esters52. The exact reactivity order for carboxylic acid derivatives is:a. Anhydride acylchloride esterb. Ester anhydride acylchloridec. Amide acylchloride esterd. Acychloride anhydride Ester53. Based on the physio – chemical properties, proteins may be classified into thefollowing types:a. Simple proteinsb. Compound proteinsc. Derived proteinsd. All of the above54. Based on function, thyroxin can be classified as:a. Hormonal proteinb. Structural proteinc. Transport proteind. Genetic protein55. L-Asparaginase enzyme has been used for the treatment of:a. Jaundiceb. Blood cancerc. Ricketsd. Heat disease56. Potassium, Rubidium, Cesium react with oxygen to form which types of oxides?a. Peroxideb. Superoxidec. Suboxided. Normal oxide
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-741833457. Magnesium reacts with nitrogen to form:a. Mg2N2b. Mg3N2c. MgN2d. MgN58. Densities of alkali metals are low due to:a. Weak intermolecular forcesb. Large atomic volumec. Smaller sized. .ns1 configuration59. In 3rd series of transition elements, paramagnetic behavior is maximum for Mn 2and:a. Cr3 b. Ti3 c. V3 d. Zn 260. Electronic configuration of chromium (proton number 24) is:a. [Ar] 3d4 4S2b. [Ar} 3d5 4S2c. [Ar] 3d5 4S1d. [Ar] 3d6 4S261. The transition element which does not show variable valencyos:a. Cub. Scc. Znd. Cr62. Select the organic compound which belongs to Arene family;a. CH2 CH2b. CH3-o-CH3c. CH3 NH2d. C6H663. The type of isomerism existing in a compound of molecular formula C2H60 is:a. Functional groupb. Positionc. Chaind. Metamerism64. Which of the following compounds show geometric isomerism?a.b.c.d.65. Generic formula of cycloalkane is?CnH2n 2a.b. CnH2nCnH2n 1c.CnH2n-2d.66. Electrophile in sulphonation of benzene is:
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334a. HSO-4b. H2SO4c. SO3d. HSO367. The following has IUPAC name of:a. 2,3 – tetramethyl butaneb. 2,2,3,3 – tetramethyl pentanec. 3,3,4,4 – tetramethyl butaned. 3,4 – bis (dimethyl butane)68. Acetophenoe can be formed by which of the following reaction of benzene?a. Alkylationb. Acylationc. Halogenationd. Nitration69. In alkanes, each carbon has hybridization:a. Sp3b. Spc. SP2d. Dsp70. When CH3 is attached with the benzene ring, it makes the ring:a. Good Electrophileb. Good nucleophilec. Resonance hybridd. Extraordinary stable71. Which of the following reaction has greater Kp than Kc (kp Kc)a. 2NO Cl2 2NOCib. 2SO2 O2 2SO3c. 2NOCi 2No Cl2d. N2 3H2 2NH372. The equation N2g 3H2g 2NH3, represents:a. Contact processb. Haber’s processc. Solvay processd. Avagadro’s law73. The unit of the rate constant is the same as that of the rate of reaction in:a. Zero order reactionb. First order reactionc. Second order reactiond. Third order reaction74. The study of rates of chemical reactions and the factors that affect the rates ofchemical reactions is known as:a. Thermodynamicsb. Stoichiometryc. Electrochemistryd. Chemical kinetics75. For the reaction A(g) products, when the concentration of A(g) doubles, the rateof reaction increases four fold, which means it is:
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334a. Negative order reactionb. First order reactionc. Zero order reactiond. Second order reaction76. For which of the following order of the reaction, rate of reaction in inverselyproportional to the concentration reaction?a. 1st order reactionb. 2nd order reactionc. Negative order of reactiond. Zero order of reaction77. The thermal energy at constant pressure is called:a. Enthalpyb. Internal energyc. Heat capacityd. Work done78. Born-Haber cycle is used to determine the lattice energies of:a. Molecular solidsb. Metallic solidsc. Ionic solidsd. Covalent solids79. One calorie is equal to:a. 4.18 KJb. 4.18c. 0.418 KJ mold. 0.418 KJ80. The oxidation state of ‘S’ in the (S2O3)-2is:a. 4b. 6c. -2d. 281. The common oxidation number of halogens is:a. -1b. 1c. -2d. 082. During oxidation process, oxidation number of an element:a. Decreasesb. Increasesc. Remains constantd. Both A&B83. Which of the following has the height value of electronegativity?a. 1b. Brc. Cld. F84. Which of the following hybrid orbitals has maximum ‘S’ –character? a. Sp3 – hybrid orbital
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334b. Sp2 – hybrid orbitalc. Sp – hybrid orbitald. Dsp2 – hybrid orbital85. The first ionization energy is maximum for:a. Nab. Mgc. Ald. K86. The efficiency of chemical reaction cay be expressed as:a. Theoretical yieldb. Actual yieldc. %yieldd. Maximum yield87. In a vessel, 10g N2, 10g H and 10g O2 are present. Which one will have leastnumber of atoms?a. H2b. N2c. O2d. Both H2 & N288. The empirical formula of Glucose C6H12O6 is:a. C6H12O16b. CHOc. CH2Od. CH2O289. The relationship between quantum number n and I is:a. N 1-1b. I n-2c. I n-1d. N 1-290. Quantum number values for ‘2p’ orbitals are:a. N 2, I 1b. N 1, I 2c. N 1, I 0d. N 2, I 091. Which pair has 1 electron in it’s ‘s’ orbital?a. Li, Feb. Na & Crc. K &Mnd. H & He92. Which of the following has the lowest e/m ratio?a. Li 2b. H 1c. Hed. Be93. According to the general gas equation density of an ideal gas depends upon:a. Pressureb. Temperature
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334c. Molar mass of the gasd. All of the above94. The actual volume of gas molecules is considered negligible at followingpressures:a. 2 atmb. 4 atmc. 6 atmd. 8 atm95. CO2 and SO2 both are tri-atomic molecules but heat of vaporization of SO2 isgreater than that of CO2 due to:a. High electronegativity of Sb. Greater size of SO2c. SO2 is polar and CO2 is non-polard. SO2 is more acidic than CO296. Which of the following has the lowest vapour pressure at 20oC?a. Diethyl etherb. Chloroformc. Carbon tetrachlorided. Water97. Which of the following is not a molecular solid?a. Bromineb. Sulphurc. Phosphorusd. Carbon dioxide98. The lattice energy is also called as:a. Enegy of affinityb. Bond energyc. Crystal energyd. Potential energy99. For a gaseous phase reaction, when number of moles of reactants and productsare equal:a. The values of Kp and Kc are differentb. The values of Kp is greater than Kcc. The values of Kc is greater than Kpd. The values of Kp and KC are the same100.Purification of table salt (NaCl) by passing HCI gas through its saturatedaqueous solution is an example of:a. Lawa of mass actionb. Hess’s lawc. Common ion effectd. Henry’s lawEnglish101.We prefer fruits sweetsa. Tob. Onc. Overd. From
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 5.a.b.c.d.106.a.b.c.d.107.a.b.c.d.108.Choose the correct dChoose the correct spellingCotionedCautionedCauschunedCoschunedChoose the correct spellingEccentricEccentricAkcantricAccentricChoose the correct spellingDefiniteDefiniteDafaniteDefiniteThe Headmaster to speed to youWantsIs wantingWas wantingWantChoose the correct option:Knowledge and wisdom no time for connectionHasHaveHadAreIdentify the erros and choose the correct option:I hope this letters finds in the best of your spiritsa.b.c.d.109.I hope this letter will find you in good of high spiritsI hope this letter finds you in best of your spiritI hope letter finds you in the best of spiritsI hope the letter found you in greatest of spiriteIdentify the errors and choose the correct option:Gulliver travel was written by swifta. Gulliver travels was written to swiftb. Gulliver’s travels was written by swiftc. Gulliver’s travel was written by swift110.Fill in the blank with appropriate article as required. Umbrella is of no availagainst a thunderstorma. The
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334111.112.113.114.115.116.117.118.119.b. Ac. And. No article requiredChoose the correct sentencea. I wish I have been a millionareb. I wish I am beaing a millionairec. I wish I were a millionaired. I wish I was millionairePick the correct optiona. No start is brighter than the moonb. No star is more bright than the moonc. No start is brighter then the moond. No star is brighter than moonChoose the correctly structured sentence.a. Had he lived in England he would miss his familyb. Had he lived in England, he would have missed his familyc. Had he lives in England he had missed his familyd. Had he live in England he will missed his familyShe always carried un umbrella. The sentence indicates tense.a. Present tenseb. Past simplec. Past perfectd. Present perfectAhmed me for a long timea. Knowb. Have knownc. Knowsd. KnewPick the correct option: his first inning consists of four 6s and three 4sa. His first inning’s consists of four 6 and three 4b. His first innings consist of four 6’s and three 4’sc. His first innings consist of four 6’s and three 4’sd. His first inning’s consist of four 6’s and three 4’sChoose the correctly punctuated sentence:a. What a fall was there, my countrymen! Long live the king!b. What a fall was there! My countrymen. Long live the King!c. What a fall was there, my countrymen, Long live the king.d. What a fall was there, my countrymen, Long live the king.Choose the correct option:a. He and I was playingb. He and I were playingc. He and I were being playingd. He and I was being playingChoose the correct option:a. Every one of the prisons are fullb. Every one of the prisons had fullc. Every one of the prisons have full
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334d. Every one of the prisons is fullNot only the parents but also their son for interviewa. Has calledb. Have calledc. Have been calledd. Has been calledBiology121.When the temperature of the body surrounding rises, baby responds bya. Vasoconstrictionb. Vasodilationc. Shiveringd. Raising body hairs122.The excretion of hypertonic urine in humans is associated best with thea. Glomerular capsuleb. Proximal convoluted tubulec. Loop of henled. Distal convoluted tubule123.In humans, the temperature regulation control conter is located ina. Kidneysb. Brainc. Lungsd. Liver124.As an excretory organ, livera. Detoxifies many chemical poisionsb. Produces ammonia for excretion by the kidneysc. Produces uring and uric nitrogen of amino acidsd. All of the above125.The active uptake of sodium in the ascending limb or thick loop of henle ispromoted by the action ofa. Aldosteroneb. Thyroxinec. ADHd. Cortisone126.Which of the following muscles are considered as ‘Voluntary Muscles’?a. Smooth musclesb. Crdiac musclesc. Skeletal musclesd. Glandular muscles127.Which one of the following ‘myoenic’ types of muscle?a. Glandular musclesb. Cardiac musclesc. Skeletal musclesd. Smooth muscles128.What do we call the cell surface membrane of a muscle fiber?a. Sarcolemmab. Plasma membranec. Sarcoplasm120.
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334d. Myofibrils129.Which of the following neurotransmitters function, both asneurotransmitter and hormones, decreasing our perception of pain?a. Epinephrineb. Serotoninc. Dopamined. Endorphins130.Which body function is controlled through positive feedback mechanism?a. Labor contractionsb. Body temperaturec. Insuliln productiond. Thyroxin release131.Which of the following is common to all neurons?a. A cell which contains a nucleusb. A thick myelin heathc. Presence of node of Ranvierd. Presence of Schwann cells132.Neurons are cells adopted for the rapid transmission of electrical impulses.To do this, they have long thin process called:a. Axonsb. Dendritedc. Myelin sheathd. Schwann cells133.is a junction between two neurons or between a motor neuron and amuscle cella. Impulseb. Synapsec. Axond. Cleft134.Which of the following represents the changes that occur in the ovary andthe uterus approximately every 28 days involving evolution with the breakdownand loss of the linning of the uterusa. Ovulationb. Menstrual cyclec. Uterine cycled. Embryo formation135.Which of the following disease is sexually transmitted?a. Tuberculosisb. AIDsc. Dengue feverd. Cholera136.Which of the following hormones of the pituitary gland regulate themenstrual cycle?a. Follicle stimulating bormone and estrogenb. Luteinizing hormone and estrogenc. Follicle stimumating hormone and luteinizing hormoned. Estrogen and progesterone
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334137.Haemophilia A and B, color blindness and testicular feminization areexample ofa. X-linked dominant traitb. Y-linked recessive traitc. Y-linked inheritanced. Pseudosutosomal traitNote: none of these is correct138.Which traits ar most likely to affect men than women?a. X linked recessiveb. X linked dominantc. Autosomal dominantd. Autosomal recessive139.Alleles both have an effect on the phenotype heterozygotic organisma. Dominantb. Recessivec. Multipled. Co-dominant140.When both the allele of a genes are same, the organism is said to be:a. Heterozygousb. Genotypec. Homozygousd. Phenotype141.In which type of cell. Cell wall is not present?a. Plant cellsb. Fungal cellsc. Bacterial cellsd. Liver cells142.70S size ribosomes are found in the cells ofa. Algaeb. Protozoansc. Fungid. Bacteria143.According to the fluid mosaic model of cell membrane, which zone isembedded inside?a. Hydrophobicb. Globularc. Hydrophilicd. Filamentous144.The membrane separating the vacuole from cytoplasm is calleda. Cristaeb. Cisternaec. Tonoplastd. Vacuolar membrane145.Select the one which is not a function of smooth endoplasmic retidulum(SER)?a. Metabolism of lipidsb. Transmission of impulses
TO Order MDCAT Past Paper 2008-2020 UNIT-Wise Solved Whats App 0304-7418334c. Transport of materailsd. Processing og glycoproteins146.Which of the following organelles are involves in the synthesis of plant cellwall?a. Endoplasmic reticulumb. Golgi complexc. Lysosomesd. Peroxisomes147.Which property of water helps to maintain the integrity of cellmembrances?a. Specific heat capacityb. Hydrogen bondingc. Cohesion and adhesiond. Hydrophobic exclusion148.Water act as universal solvent because ofa. Heat of vaporizationb. Hydrogen bondingc. High polarityd. Cohesion and adhesion149.Lipids store double amount of energy as compared to carbohydrtesbecause ofa. High proportion of oxygenb. High C-O ratioc. Low proportion of carbond. High proportion of C-H150.Which of the following is an unsaturated fatty acid?a. Oleic acidb. Palmitic acidc. Butyric acidd. Acetic acid151.Mon
d. Doppler effect Sol: Doppler Effect is used to calculate speed of distant stars and galaxies. Because some starts are moving towards observed and others away and by Doppler effects we can calculate star speed. 6. In a ripple tank, 40 waves pass through a certain point in 1 second. If the wavelength of the wave is 5 cm, then speed of the wave is:
