KMUCAT - 2nd Practice Test

KMU-CAT Practice Test

Candidate Name:

Time Remaining: 60:00

Instructions:

• You have 60 minutes to complete this test
• Answer all 60 multiple-choice questions
• Each question has only one correct answer
• The test will automatically submit when time expires

1. The species which are becoming near to extinction are called:

a) Wild b) Endangered c) Threatened d) None

2. What number comes next in the sequence 2, 6, 12, 20, 30?

a) 36 b) 42 c) 40 d) 44

3. What is a figure of speech in which two unlike things are compared using "like" or "as"?

a) Metaphor b) Personification c) Simile d) Hyperbole

4. What letter comes in the following series? B, D, G, K, P

a) C b) Q c) R d) V

5. BRASS is to metal as SPARROW is to

a) Animal b) Bird c) Wings d) Fly

6. What is the name for a group of words that contains a subject and a verb but does not express a complete thought?

a) Phrase b) Clause c) Sentence d) Paragraph

7. If five boxes of soap weigh 75kg and each box when empty weighs 3Kg, how much is the weight of the soap?

a) 10Kg b) 45kg c) 60kg d) 70Kg

8. What is the term for a sentence that gives a command or makes a request?

a) Statement b) Question c) Exclamation d) Imperative

9. If Akbar is younger than Mehmood and Ayaz and Ayaz is older than Mehmood and Zubair is younger than Ayaz, who is the oldest?

a) Ayaz b) Zubair c) Akbar d) Mehmood

10. What is the term for a sentence that expresses strong emotion or surprise?

a) Statement b) Question c) Exclamation d) Imperative

11. The dimension of work is like the dimensions of

a) Impulse b) Torque c) Power d) Angular momentum

12. The time rate of change of magnetic flux has the exact dimensions as that of

a) Current b) Resistance c) Magnetic induction d) Potential difference

13. The magnitude of i. (j x k) is

a) 1 b) 0 c) 2 d) None

14. A mass accelerates uniformly when the resultant force acting on it is

a) Zero b) Constant but not zero c) Increasing uniformly with respect to time d) Both (a) and C

15. A stone thrown horizontally from the top of a building follows a path that is

a) Circular b) Made of two straight line segments c) Hyperbolic d) Parabolic

16. A hunter aiming at a bird in a tree should aim

a) Exactly at the bird b) A little above the bird c) A little below the bird d) Very high

17. The heat energy dissipated by a 40-watt bulb in one hour is

a) 1440J b) 14400J c) 144000J d) 1440000J

18. The temperature scale which is independent of the nature of working substance is

a) Celsius scale b) Fahrenheit scale c) Centigrade scale d) Thermodynamic scale

19. If the temperature of the source of heat increases the efficiency of a Carnot engine

a) Increases b) Decreases c) Remains constant

20. The negative gradient of electric potential is also called:

a) Potential energy b) Electric field intensity c) Destine potential energy d) Electron volt

21. Two metallic conductors have the same resistivity. These conductors can be differentiated from the values of their:

a) Temperature coefficient b) Resistance c) Conductance d) Conductivity

22. In transistor, the emitter-base junction is:

a) Reverse biased b) Forward biased c) Neutral

23. In Einstein's universe, what is the fourth dimension?

a) Speed b) Time c) Energy d) Space

24. The excited state which persists for an unusually longer period of time is called:

a) Ground state b) Ionized state c) Metastable state d) Ordinary excited state

25. One atom of sodium is:

a) 23 g b) moles c) Positively charged d) 1/NA moles

26. One gram atom of chlorine is equal to:

a) One mole of chlorine atoms b) 35.5 grams of chlorine atom c) 71 grams d) Both a & b

27. Total charge on an electron is approximately:

a) 1.6 × 10⁻¹⁹ C b) 9.1 × 10⁻³¹ kg c) 1.6 × 10⁻¹⁹ J d) 3.0 × 10⁸ m/s

28. If the maximum value of principal quantum number for an atom is 4, then the total number of electrons in the atom will be:

a) 32 b) 60 c) 18 d) 28

29. Velocity of an electron will be maximum in the:

a) First energy level b) Second energy level c) Third energy level d) Fourth energy level

30. A container with a porous wall is filled with one mole each of He, H₂, N₂, and CO₂. Which one of these gases will take the least time to diffuse out of the container?

a) He b) H₂ c) N₂ d) CO₂

31. The behavior of a gas is non-ideal at:

a) High temperature and low pressure b) Low temperature and high pressure c) Low temperature and low pressure d) High temperature and high pressure

32. Which of the following elements will have the strongest Van der Waals forces of attraction between molecules?

a) Hydrogen b) Chlorine c) Oxygen d) Nitrogen

33. Equal number of moles of three gases O₂, Cl₂ and H₂ are enclosed in a container at room temperature. If the container leaks accidentally, then:

a) H₂ will effuse out first b) Cl₂ will effuse out last

34. The exact reactivity order for carboxylic acid derivative is?

a) Anhydride > acyl chloride > ester b) Ester > Anhydride > Acyl chloride c) Amide > Acyl chloride > Ester d) Acyl chloride > Anhydride > Ester

35. Oxidation number of hydrogen can be

a) 0 b) +1 c) -1 d) All of the above

36. If the following liquids are at the same temperature then liquid having least vapour pressure will be

a) Butane C₄H₁₀ b) Pentane C₅H₁₂ c) Hexane C₆H₁₄ d) heptane C₇H₁₆

37. For a reversible reaction, the catalyst increases the speed of

a) Forward reaction b) Reverse reaction c) Both forward as well as reverse reaction to the same extent d) Forward reaction to larger extent than the reverse reaction

38. A body executing SHM has a maximum acceleration of 12m/s² and maximum velocity of 6m/s the amplitude of SHM is

a) 2m b) 3m c) 4m d) 6m

39. The fundamental frequency of a string is proportional to

a) inverse of length b) diameter c) tension d) density

40. If the distance covered by a particle is zero then what can we say about its displacement

a) It is negative b) It may or may not be zero c) It must be zero d) It cannot be zero

41. The angular velocity of the hour hand of a watch is

a) π/6 rad/h b) π/3 rad/h c) 1 rad/h d) 0.52 rad/h

42. An alpha and deuteron enter perpendicular to uniform magnetic field with same velocity then ratio of their radii of circular path is

a) 1:2 b) 2:1 c) 1:1 d) 1:4

43. A person holds a bucket of weight 50N. He walks 7m along the horizontal and then climbs up a vertical distance of 5m. The work done by the man is

a) 250J b) 0J c) 350J d) 550J

44. Release of energy from sun is due to

a) nuclear fusion b) nuclear fission c) chemical reaction d) burning of gases

45. A body is released from top of tower of height 80m. The time taken to reach the earth is (take g=10m/s²). Neglect air resistance

a) 2s b) 3s c) 4s d) 5s

46. A buffer is a solution which:

a) Has constant pH b) Resists change in its pH c) Consists of a strong acid and a strong base d) Contains salts of strong acids and strong bases

47. Equilibrium constant expression in non-aqueous medium can be applied to:

a) An aqueous solution of sucrose b) An aqueous solution of table salt c) An aqueous solution of fructose d) A solution of kerosene

48. If molar concentration of a reactant "A" is 1, then rate of the reaction of "A" will be:

a) Greater than rate constant b) Less than rate constant c) Equal to rate constant d) None

49. The rate at which product is produced depends upon:

a) Fastest step b) Slowest step c) Intermediate step d) 1st step

50. The reaction whose rate doesn't depend on concentration is:

a) Not possible b) Zero order reaction c) 1st order reaction d) 2nd order reaction

51. Two brothers, one has blood group A, while one has blood group O. What can be concluded about their parents?

a) One parent (at least) must be heterozygous b) Both parents must be heterozygous c) Both parents must be homozygous d) One parent (at least) must be homozygous

52. Damage to the cerebellum as a result of injury causes:

a) Poor coordination of movements b) Lack of temperature control c) Irregular heartbeat d) Inability to recognize visual stimuli

53. Which one is the drinking process of the cell?

a) Exocytosis b) Phagocytosis c) Pinocytosis d) Endocytosis

54. The first stable product of the dark reaction is a ____ carbon molecule:

a) 6 b) 4 c) 3 d) 5

55. Tobacco mosaic virus is:

a) Spherical b) Tadpole-like c) Rod-shaped d) Polyhedral

56. All of the following are viruses except:

a) SARS b) FIV c) SIV d) Mycoplasma

57. Which of the following hepatitis is transmitted by the fecal-oral route?

a) Hepatitis A b) Hepatitis B c) Hepatitis C d) Hepatitis D

58. Which type of archaea dominantly occurs in the Dead Sea?

a) Thermophiles b) Halophiles c) Both a and b d) Methanogens

59. Insulin is secreted by:

a) Alpha cells b) Beta cells c) Delta cells d) Acinar cells

60. Insulin is manufactured commercially using genetic engineering. Which organism is used?

a) Viruses b) Bacteria c) Fungi d) Animals

Answer Key

1. b) Endangered - Species nearing extinction are called endangered species.

2. b) 42 - The pattern increases by consecutive even numbers (4, 6, 8, 10, 12).

3. c) Simile - A simile compares two things using "like" or "as".

4. d) V - The series follows alphabetical positions with increasing gaps (B=2, D=4, G=7, K=11, P=16, V=22).

5. b) Bird - Brass is a type of metal, just as sparrow is a type of bird.

6. b) Clause - A clause contains a subject and verb but may not express a complete thought.

7. c) 60kg - Total weight = 75kg, empty boxes = 5×3kg = 15kg, soap weight = 75-15 = 60kg.

8. d) Imperative - Imperative sentences give commands or make requests.

9. a) Ayaz - Ayaz > Mehmood > Akbar, and Ayaz > Zubair.

10. c) Exclamation - Exclamatory sentences express strong emotion.

11. b) Torque - Both work and torque have dimensions of [ML²T⁻²].

12. d) Potential difference - dΦ/dt has the same dimensions as voltage.

13. a) 1 - j × k = i, so i.(j × k) = i.i = 1.

14. b) Constant but not zero - F=ma, constant force produces uniform acceleration.

15. d) Parabolic - Projectile motion follows a parabolic path.

16. b) A little above the bird - To account for gravity's effect on the bullet.

17. c) 144000J - Energy = Power × Time = 40W × 3600s = 144000J.

18. d) Thermodynamic scale - Kelvin scale is independent of substance properties.

19. a) Increases - Carnot efficiency η = 1 - (Tc/Th), increases with Th.

20. b) Electric field intensity - E = -∇V, the negative gradient of potential.

21. a) Temperature coefficient - Different materials have different temperature coefficients even with same resistivity.

22. b) Forward biased - Emitter-base junction is forward biased for normal transistor operation.

23. b) Time - In relativity, time is considered the fourth dimension.

24. c) Metastable state - An excited state with unusually long lifetime.

25. d) 1/NA moles - One atom = 1/6.022×10²³ moles.

26. d) Both a & b - One gram atom = one mole = atomic mass in grams.

27. a) 1.6 × 10⁻¹⁹ C - Fundamental charge of an electron.

28. a) 32 - Maximum electrons = 2n² = 2(4)² = 32.

29. a) First energy level - Electrons move fastest in the lowest orbit (n=1).

30. a) He - Helium (lowest molecular weight) diffuses fastest.

31. b) Low temperature and high pressure - Gases behave least ideally under these conditions.

32. b) Chlorine - Larger molecules have stronger Van der Waals forces.

33. a) H₂ will effuse out first and b) Cl₂ will effuse out last - Lighter gases effuse faster (Graham's law).

34. d) Acyl chloride > Anhydride > Ester - Reactivity order of carboxylic acid derivatives.

35. d) All of the above - Hydrogen can be 0 (H₂), +1 (HCl), or -1 (NaH).

36. d) heptane C₇H₁₆ - Larger molecules have lower vapor pressure at same temperature.

37. c) Both forward as well as reverse reaction to the same extent - Catalyst affects both directions equally.

38. b) 3m - Using a_max = ω²A and v_max = ωA, solving gives A = 3m.

39. a) inverse of length - Fundamental frequency f ∝ 1/L.

40. c) It must be zero - Zero distance implies zero displacement.

41. a) π/6 rad/h - Hour hand completes 2π radians in 12 hours.

42. b) 2:1 - r = mv/qB, alpha has 2x charge of deuteron so r ratio is 2:1.

43. a) 250J - Only vertical work counts: W = mgh = 50N × 5m = 250J.

44. a) nuclear fusion - Sun's energy comes from hydrogen fusion.

45. c) 4s - t = √(2h/g) = √(160/10) = 4s.

46. b) Resists change in its pH - Definition of a buffer solution.

47. d) A solution of kerosene - Non-aqueous medium for equilibrium constant.

48. c) Equal to rate constant - For first order reaction when [A]=1, rate = k.

49. b) Slowest step - Rate determining step is the slowest step.

50. b) Zero order reaction - Rate is independent of concentration.

51. a) One parent (at least) must be heterozygous - To produce an O child, both parents must carry the O allele.

52. a) Poor coordination of movements - Cerebellum controls motor coordination.

53. c) Pinocytosis - "Cell drinking" of liquid droplets.

54. c) 3 - 3-phosphoglycerate is the first stable product in Calvin cycle.

55. c) Rod-shaped - TMV has a characteristic rod-like structure.

56. d) Mycoplasma - It's a bacterium, not a virus.

57. a) Hepatitis A - Transmitted via contaminated food/water.

58. b) Halophiles - Archaea that thrive in high salt concentrations.

59. b) Beta cells - Pancreatic β-cells secrete insulin.

60. b) Bacteria - Genetically modified E. coli is commonly used.