بِسْمِ اللَّهِ الرَّحْمَـٰنِ الرَّحِيمِ

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Scholarship Test I 2025

Udoctor Scholarship Test 2025 | Test I

  • Please remove all distractions and stay fully focused on the test.

  • You must take an oath not to cheat during the test.

  • Submit the test before the timer runs out.

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  • Do not resubmit the test; doing so will lead to disqualification.

رَبِّ زِدْنِي عِلْمًا

1 / 100

1. What is the role of chloride shift in carbon dioxide transport?

2 / 100

2. At which partial pressure does hemoglobin begin to release oxygen readily?

3 / 100

3. How is the sacrum formed in the vertebral column?

4 / 100

4. What occurs when ATP is depleted in muscle cells, such as in rigor mortis?

5 / 100

5. Which synthetic auxin is often used to prevent premature fruit drop in crops?

6 / 100

6. Which of the following neurons lacks true dendrites and is involved in peripheral sensory transmission?

7 / 100

7. Cold receptors are nearly ___ times more abundant than heat receptors in the human body.

8 / 100

8. The reflex arc is considered involuntary because:

9 / 100

9. Which neurotransmitter is believed to be reduced in patients with Parkinson’s disease?

10 / 100

10. Feedback mechanisms in the body ensure:

11 / 100

11. What is the role of FSH in the reproductive system?

12 / 100

12. Which disorder is characterized by the absence of sperm in the ejaculate?

13 / 100

13. What happens during the proliferative phase of the menstrual cycle?

14 / 100

14. If two parents with blood group A have a child with blood group O, what must be true about their genotypes?

15 / 100

15. If a woman is heterozygous for an X-linked dominant trait, what is the likelihood of her passing the disorder to her children?

16 / 100

16. What does the term ‘hemolytic reaction’ mean in the context of incompatible blood transfusions?

17 / 100

17. What is the relationship between genetic drift and population size?

18 / 100

18. How does parapatric speciation differ from allopatric speciation?

19 / 100

19. What is the founder effect?

20 / 100

20. Lysosome was discovered by ______.

21 / 100

21. Diameter of Nucleus is ____ micro meter.

22 / 100

22. During the determination of gene linkage the ratio of recombinant is similar to parental, the genes are

23 / 100

23. Steroids contain how many attached rings?

24 / 100

24. Which fatty acid is most common in animal lipids and tends to be solid at room temperature?

25 / 100

25. How many α-chains are present in normal hemoglobin (HbA)?

26 / 100

26. Which enzyme classification includes enzymes that transfer electrons between molecules?

27 / 100

27. At what pH does the enzyme trypsin show optimal activity?

28 / 100

28. What type of enzyme joins molecules together and uses ATP?

29 / 100

29. Which molecule in C4 plants is used to initially fix CO2?

30 / 100

30. What is produced when isocitrate is oxidized in the Krebs cycle?

31 / 100

31. What is the empirical formula for chlorophyll ‘b’?

32 / 100

32. What is a defining characteristic of prions?

33 / 100

33. How is the poliovirus primarily transmitted?

34 / 100

34. The term ‘icosahedral’ refers to:

35 / 100

35. What process allows a bacterial spore to germinate and resume growth?

36 / 100

36. Cholera Bacteria is which shaped?

37 / 100

37. Which Bacteria type don’t have flagella

38 / 100

38. Trypsin is activated by _____

39 / 100

39. Which cells in the pancreas are responsible for secreting digestive enzymes?

40 / 100

40. What is the function of the parietal cells in the stomach?

41 / 100

41. What happens during ventricular systole in the mammalian heart?

42 / 100

42. How does the absence of a basement membrane in lymph capillaries affect lymph absorption?

43 / 100

43. What happens to the remaining 3 liters of fluid that does not return to the blood capillaries?

44 / 100

44. What is the role of cytokines in the immune system? [2023]

45 / 100

45. What is the role of IgE antibodies in allergic responses?

46 / 100

46. What is the relationship between the time constant and the charging rate of a capacitor?

47 / 100

47. What is the net electrostatic force on q2 if q1 = -5 μC, q2 = +10 μC, and q3 = -12 μC are placed in a straight line with distances r12 = 6 cm and r23 = 4 cm?

48 / 100

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

49 / 100

49. There is a current of 3.2 amps in a conductor. The number of electrons that cross any section normal to the direction of flow per second is:

50 / 100

50. An electron is projected with a velocity V into a region where there exists a uniform electric field of strength E perpendicular to a uniform magnetic field of strength B. If the electron velocity is to remain constant, V must be:

51 / 100

51. Two long parallel wires X and Y carrying a current of 3A and 5A, respectively. The force per unit length experienced by X is 5 × 10^{-5}N to the right. The force per unit length experienced by wire Y is:

52 / 100

52. Calculate the work done in moving a coil of 100 turns across a magnetic field of 0.8 T over a distance of 0.5 m, given that the coil’s area is 0.02 m².

53 / 100

53. A transformer has a power output of 1000W and operates at an efficiency of 90%. Calculate the input power to the transformer.

54 / 100

54. In a full-wave rectifier, if the RMS value of the input voltage is 12V, what is the output DC voltage?

55 / 100

55. What is the relationship between the scattering angle and the wavelength shift in the Compton effect?

56 / 100

56. A radioactive sample has a decay constant λ = 0.1 day^-1. What is the time required for the sample to reduce to one-fourth of its original quantity?

57 / 100

57. If the excitation energy from n=1 to n=2 is 10.2 eV, calculate the excitation energy from n=1 to n=3.

58 / 100

58. A projectile is thrown horizontally from a 490 m high cliff with a velocity of 100 m/s. The time taken by projectile to reach the ground is

59 / 100

59. Two masses of 2 kg and 4 kg are moving with velocities of 4 m/s and 2 m/s, respectively. Which has more kinetic energy?

60 / 100

60. A man of mass 90 kg is standing in an elevator whose cable broke suddenly. If the elevator falls freely, the force exerted by the floor on the man is:

61 / 100

61. The paratrooper of mass 80 kg descends vertically at a constant velocity of 3.0 m/s. Taking the acceleration of free fall as 10 m/s², what is the net force acting on him?

62 / 100

62. The phase constant ‘phi’ in simple harmonic motion determines:

63 / 100

63. The number of loops in stationary waves depends upon:

64 / 100

64. A 30-cm long string, with one end clamped and the other free to move transversely, is vibrating in its second harmonic. The wavelength of the constituent traveling waves is:

65 / 100

65. A 5 kg object is subjected to two forces: a 20 N force acting to the right and a 10 N force acting to the left. If the object is initially at rest, what will be its acceleration after the forces act on it?

66 / 100

66. If I ___ you, I would start preparing now.

67 / 100

67. Which sentence correctly uses a comma to separate a tag question from the rest of the sentence?

68 / 100

68. The data ___ presented during the conference were inaccurate.

69 / 100

69. Which sentence correctly uses a preposition with ‘confess’?

70 / 100

70. You ____ fluent in Spanish if you practice daily.

71 / 100

71. 10L of Cl2 gas reacts with 40L of H2 gas under the same conditions of temperature and pressure. How much volume of HCl should be produced?

72 / 100

72. Four moles of electrons (4 x 6.02 x 10^23 electrons) would electroplate how many grams of silver from a silver nitrate solution?

73 / 100

73. Which orbital fills first, 4s or 3d, according to the Aufbau principle?

74 / 100

74. In the molecule XeO₃, what is the hybridization of Xenon?

75 / 100

75. Calcium chloride (CaCl₂) forms hydrates in the presence of humidity. What is the correct formula for hydrated calcium chloride?

76 / 100

76. Which of the following best explains why CO2 has a lower molar heat of fusion than NH3?

77 / 100

77. Two gases, A (16 g/mol) and B (64 g/mol), diffuse under identical conditions. If gas A diffuses at rate X, what is the rate of gas B?

78 / 100

78. At a certain temperature, 1.0 mol of N₂ and 3.0 mol of H₂ are placed in a 2.0 dm³ sealed container. They react according to the equation:

N₂(g) + 3H₂(g) ⇌ 2NH₃(g)

At equilibrium, 1.2 mol of NH₃ is formed. Calculate the value of the equilibrium constant Kc.

79 / 100

79. For the reaction 2NO2 + CO -> 2NO + CO2, the rate expression Rate = k[CO][NO2] suggests that the reaction order with respect to NO2 is:

80 / 100

80. When potassium dichromate (K₂Cr₂O₇) reacts with an iodide ion (I⁻), the chromium is reduced to:

81 / 100

81. Given a reaction with ΔH = -890.27 kJ/mol, which of the following is true?

82 / 100

82. What makes BeSO₄ more soluble than BaSO₄ in water?

83 / 100

83. What type of bonds are formed in PbCl2 due to the inert pair effect?

84 / 100

84. What is the observed color of CrO3 in its +6 oxidation state?

85 / 100

85. What is the complementary color of red?

86 / 100

86. Which element is detected by Lassaignes test using ferric chloride and Prussian blue color?

87 / 100

87. Which statement is true about the bond lengths in benzene?

88 / 100

88. What is the systematic name for TNT?

89 / 100

89. What is the product when a Grignard reagent reacts with formaldehyde followed by acid workup?

90 / 100

90. Which of the following alkyl halides is least likely to undergo an S_N2 reaction?

91 / 100

91. What is the IUPAC name of picric acid?

92 / 100

92. In the Clemmensen reduction, which of the following is the primary reducing agent?

93 / 100

93. Which is a major product of ozonolysis of 2-methylbut-2-ene?

94 / 100

94. In the hydrolysis of amides, what are the products formed?

95 / 100

95. What is formed when acyl chloride reacts with ethyl alcohol in the presence of pyridine?

96 / 100

96. Statement: If you want to get a good job you must have at least the basic knowledge of computers.
Assumptions:
I. All good jobs involve use of computers.
II. Computer knowledge has been made an essential criterion by most of the companies now a days.

97 / 100

97. Statement I: The government medical college has decided to increase the number of seats in undergraduate course from the next academic session.
Statement II: The government has decided to withdraw its grant from the government medical colleges from the next academic session.

98 / 100

98. Statement: The alert villagers caught a group of dreaded dacoits armed with murderous weapons.
Courses of Action:

I. The villagers should be provided sophisticated weapons.
II. The villagers should be rewarded for their courage and unity.

99 / 100

99. Statements: Domestic demand has been increasing faster than the production of indigenous crude oil.

Conclusions:
I. Crude oil must be imported.
II. Domestic demand should be reduced.

100 / 100

100. Statement I: There is unprecedented increase in the number of young unemployed in comparison to the previous year.
Statement II: A large number of candidates submitted applications against an advertisement for the post of manager issued by a bank.