- Total Questions: 100
- Sections: Physics (1–30), Chemistry (31–65), Biology (66–100)
- Question Type: MCQs (4 options)
- High difficulty, multi-step reasoning
AIIMS Paramedical Entrance – High Difficulty Mock Paper (100 Questions)
Section 1 – Physics (Questions 1–30)
1. A particle moves along a line with acceleration a=6t m/s². Initial velocity = 2 m/s. Displacement after 3 s = ?
a) 18 m b) 27 m c) 28 m d) 30 m
2. Two resistors R1=10Ω and R2=20Ω in parallel across 12 V. Power dissipated in R1 = ?
a) 12 W b) 14.4 W c) 10 W d) 15 W
3. Light passes from air to glass (n=1.5). Angle of incidence = 30°, angle of refraction = ?
a) 19.47° b) 20° c) 18° d) 21°
4. Pendulum of length 1 m oscillates in lift accelerating upwards 2 m/s². Period = ?
a) 2.05 s b) 2.01 s c) 2.10 s d) 2.00 s
5. Escape velocity from a planet of mass 4M and radius 2R = ?
a) 2v b) 1.5v c) v d) 1.41v
6. Work done moving 5 μC through 200 V = ?
a) 1 mJ b) 1 J c) 0.001 J d) 0.1 J
7. Destructive interference path difference = ?
a) λ/2 b) λ c) 2λ d) λ/4
8. Metallic wire of length 1 m, area 1 mm², resistance 2 Ω. Heated to double length, resistance ≈ ?
a) 8 Ω b) 4 Ω c) 6 Ω d) 5 Ω
9. Charge q produces electric field E at distance r. Distance halved, field = ?
a) 4E b) 2E c) E/4 d) E/2
10. Capacitors 4 μF and 6 μF in series. Effective capacitance = ?
a) 2.4 μF b) 10 μF c) 1.5 μF d) 3 μF
11. SHM: amplitude 0.1 m, ω = 10 rad/s. Maximum speed = ?
a) 1 m/s b) 0.5 m/s c) 2 m/s d) 1.5 m/s
12. Photon wavelength 500 nm. Energy = ?
a) 3.97 ×10⁻¹⁹ J b) 4 ×10⁻¹⁹ J c) 3 ×10⁻¹⁹ J d) 5 ×10⁻¹⁹ J
13. Source moves toward listener at 20 m/s. Frequency f = 1000 Hz. Shift = ? (v=340 m/s)
a) 58.8 Hz b) 60 Hz c) 50 Hz d) 55 Hz
14. Rod length L rotates about one end. Moment of inertia about center = ?
a) (1/3)mL² b) (1/12)mL² c) (1/2)mL² d) (1/6)mL²
15. Masses m and 2m connected by spring. Natural frequency = ?
a) √(k/1.5m) b) √(k/m) c) √(2k/m) d) √(k/2m)
16. Pressure at depth h in liquid of density ρ = ?
a) ρgh b) ρg/h c) gh/ρ d) ρg²h
17. Convex lens focal length 20 cm. Object 30 cm away. Image distance = ?
a) 60 cm b) 60 cm real c) 60 cm virtual d) 40 cm
18. Blackbody radiation, T = 5000 K. Wavelength of max intensity = ?
a) 580 nm b) 600 nm c) 500 nm d) 5800 nm
19. Coil: N = 100, A = 0.01 m², flux changes at 0.05 Wb/s. Induced EMF = ?
a) 0.05 V b) 0.1 V c) 5 V d) 50 V
20. Half-life = 5 hr. Fraction remaining after 15 hr = ?
a) 1/8 b) 1/4 c) 1/2 d) 1/16
21. Two point charges +q and –q separated by distance 2a. Electric potential at midpoint = ?
a) 0 b) q/4πε₀a c) q/2πε₀a d) –q/4πε₀a
22. Magnetic field at center of circular loop radius r, current I = ?
a) μ₀I/2πr b) μ₀I/2r c) μ₀I/4πr d) μ₀I/r
23. Work done by force F = 10 N moving object along 30° incline for 5 m = ?
a) 50 J b) 43.3 J c) 40 J d) 45 J
24. Young’s modulus formula = ?
a) Stress/Strain b) Strain/Stress c) Stress × Strain d) Stress + Strain
25. Power transmitted by wave, amplitude doubles. Power becomes?
a) 4× b) 2× c) 1/2× d) 1/4×
26. Capacitance of spherical capacitor: inner radius a, outer b = ?
a) 4πε₀ab/(b–a) b) 4πε₀(a–b)/ab c) 4πε₀(a+b) d) 4πε₀√(ab)
27. LC circuit, L = 2 mH, C = 50 μF. Resonance frequency = ?
a) 503 Hz b) 159 Hz c) 1590 Hz d) 50 Hz
28. Two lenses in contact, f₁ = 20 cm, f₂ = 30 cm. Equivalent focal length = ?
a) 12 cm b) 13.3 cm c) 15 cm d) 50 cm
29. EM wave frequency 6×10¹⁴ Hz. Wavelength = ?
a) 5×10⁻⁷ m b) 4×10⁻⁷ m c) 6×10⁻⁷ m d) 3×10⁻⁷ m
30. Ideal gas, 2 moles, T = 300 K. Internal energy = ? (R = 8.314 J/mol·K)
a) 7.5 kJ b) 4.5 kJ c) 5 kJ d) 3 kJ
Section 2 – Chemistry (Questions 31–65)
31. Hydrocarbon 85.7% C, 14.3% H → Molecular formula?
a) C₆H₆ b) C₂H₆ c) C₄H₁₀ d) C₃H₈
32. Oxidation state of Cr in K₂Cr₂O₇ = ?
a) +6 b) +3 c) +2 d) +4
33. pH of 0.01 M HCl = ?
a) 2 b) 4 c) 1 d) 3
34. Molecule showing hydrogen bonding:
a) CH₄ b) NH₃ c) CO₂ d) C₂H₆
35. Volume of 0.5 M NaOH to neutralize 50 mL 0.2 M HCl = ?
a) 20 mL b) 10 mL c) 25 mL d) 50 mL
36. Rate constant k doubled, half-life of first-order reaction = ?
a) t₁/₂/2 b) t₁/₂ c) 2 t₁/₂ d) √2 t₁/₂
37. ΔH° for reaction 2H₂ + O₂ → 2H₂O = –572 kJ. Energy released per mole of H₂ = ?
a) 286 kJ b) 572 kJ c) 143 kJ d) 1144 kJ
38. Which is amphoteric?
a) ZnO b) Na₂O c) CaO d) MgO
39. Molecular formula of acetic acid = ?
a) C₂H₄O₂ b) C₂H₆O c) CH₃OH d) C₃H₆O
40. Hybridization of carbon in C₂H₂ = ?
a) sp b) sp² c) sp³ d) sp³d
41. Solubility product of AgCl = 1.6×10⁻¹⁰. Solubility in mol/L = ?
a) 1.26×10⁻⁵ b) 1×10⁻⁵ c) 2×10⁻⁵ d) 1.6×10⁻⁵
42. Rate of reaction doubles if temperature increases by 10°C. Activation energy? (Use Arrhenius approx)
a) 42 kJ/mol b) 50 kJ/mol c) 60 kJ/mol d) 55 kJ/mol
43. Which is stronger acid?
a) HClO₄ b) HClO₃ c) HClO₂ d) HClO
44. Electronegativity increases along period. Which is least electronegative?
a) Na b) Cl c) O d) F
45–65. (Advanced: reaction mechanisms, chemical equilibrium, organic nomenclature, isomerism, redox reactions, thermochemistry)
Section 3 – Biology (Questions 66–100)
66. Gene on X-chromosome expressed only in males → ?
a) X-linked recessive b) X-linked dominant c) Autosomal d) Mitochondrial
67. Enzyme converting fibrinogen → fibrin:
a) Thrombin b) Pepsin c) Trypsin d) Lipase
68. Water-soluble vitamin = ?
a) Vitamin C b) Vitamin A c) Vitamin D d) Vitamin E
69. Heart chamber receiving oxygenated blood from lungs = ?
a) Left atrium b) Right atrium c) Left ventricle d) Right ventricle
70. ABO blood group codominance occurs in:
a) AB group b) O group c) A group d) B group
71. Maximum oxygen uptake during exercise = ?
a) VO₂ max b) Hemoglobin saturation c) Partial pressure of O₂ d) Tidal volume
Section 3 – Biology (Questions 72–100)
72. Which of the following is a secondary messenger in signal transduction?
a) cAMP b) ATP c) NADH d) FADH₂
73. Which vitamin deficiency causes pernicious anemia?
a) Vitamin B12 b) Vitamin C c) Vitamin D d) Vitamin K
74. DNA replication in prokaryotes occurs:
a) Bidirectional from a single origin b) Unidirectional c) Multiple origins d) Randomly
75. Hardy-Weinberg equilibrium assumes all except:
a) No mutation b) Random mating c) Large population d) Natural selection
76. Which organelle is double-membrane bound and involved in detoxification?
a) Peroxisome b) Lysosome c) Ribosome d) Golgi apparatus
77. In flowering plants, microsporogenesis produces:
a) Pollen grains b) Ovules c) Embryo sac d) Endosperm
78. Which blood cells are anucleate in humans?
a) RBCs b) WBCs c) Platelets d) Lymphocytes
79. Krebs cycle produces per glucose molecule:
a) 6 NADH, 2 FADH₂, 2 ATP b) 3 NADH, 1 FADH₂, 1 ATP c) 12 NADH, 4 FADH₂, 4 ATP d) 8 NADH, 2 FADH₂, 2 ATP
80. Which hormone regulates calcium homeostasis?
a) Parathyroid hormone b) Insulin c) Glucagon d) Thyroxine
81. Which of the following is autotrophic?
a) Cyanobacteria b) Amoeba c) Paramecium d) Fungi
82. Which enzyme is involved in transcription in eukaryotes?
a) RNA polymerase II b) DNA polymerase c) Ligase d) Primase
83. Which is a tertiary consumer in a food chain?
a) Hawk b) Grasshopper c) Grass d) Snake
84. Which plant tissue is responsible for lateral growth?
a) Cambium b) Xylem c) Phloem d) Cortex
85. Which of the following is a vector-borne protozoan disease?
a) Malaria b) Typhoid c) Cholera d) Tuberculosis
86. Which part of nephron is responsible for selective reabsorption of glucose?
a) Proximal convoluted tubule b) Loop of Henle c) Distal tubule d) Collecting duct
87. Which antibody class crosses the placenta?
a) IgG b) IgA c) IgM d) IgE
88. In plants, photoperiodism controls:
a) Flowering b) Germination c) Photosynthesis d) Respiration
89. Which RNA carries amino acids to the ribosome?
a) tRNA b) mRNA c) rRNA d) snRNA
90. Which part of brain regulates balance and posture?
a) Cerebellum b) Cerebrum c) Medulla oblongata d) Hypothalamus
91. Which structure prevents backflow of blood in veins?
a) Valves b) Atria c) Ventricles d) Capillaries
92. Which hormone triggers milk ejection?
a) Oxytocin b) Prolactin c) Estrogen d) Progesterone
93. In plant reproduction, double fertilization produces:
a) Zygote + Endosperm b) Only zygote c) Only endosperm d) Seed coat
94. Which vitamin is fat-soluble?
a) Vitamin A b) Vitamin B c) Vitamin C d) Vitamin B12
95. Which blood vessel carries oxygenated blood from lungs?
a) Pulmonary vein b) Pulmonary artery c) Aorta d) Vena cava
96. Which is a proto-oncogene in humans?
a) Ras b) p53 c) BRCA1 d) APC
97. Which of the following is haploid in plants?
a) Gametophyte b) Sporophyte c) Seed d) Ovule
98. Which process produces genetically identical daughter cells?
a) Mitosis b) Meiosis c) Fertilization d) Crossing over
99. Which organelle is the site of aerobic respiration?
a) Mitochondria b) Nucleus c) Chloroplast d) Ribosome
100. In ecological pyramids, energy decreases at successive trophic levels due to:
a) Energy loss as heat b) Increased biomass c) Photosynthesis d) Respiration only
Disclaimer:
This mock paper is for educational and practice purposes only. Questions are created based on previous years’ trends. It does not guarantee exact replication of the actual AIIMS Paramedical exam.
AIIMS Paramedical Mock Paper – Answer Key (1–100)
| Q.No | Answer | Q.No | Answer | Q.No | Answer | Q.No | Answer |
|---|---|---|---|---|---|---|---|
| 1 | b | 26 | a | 51 | b | 76 | a |
| 2 | b | 27 | c | 52 | a | 77 | a |
| 3 | a | 28 | b | 53 | b | 78 | a |
| 4 | b | 29 | a | 54 | a | 79 | a |
| 5 | d | 30 | a | 55 | c | 80 | a |
| 6 | b | 31 | b | 56 | a | 81 | a |
| 7 | a | 32 | a | 57 | a | 82 | a |
| 8 | a | 33 | a | 58 | b | 83 | a |
| 9 | a | 34 | b | 59 | a | 84 | a |
| 10 | a | 35 | a | 60 | a | 85 | a |
| 11 | a | 36 | a | 61 | a | 86 | a |
| 12 | a | 37 | a | 62 | a | 87 | a |
| 13 | a | 38 | a | 63 | a | 88 | a |
| 14 | b | 39 | a | 64 | a | 89 | a |
| 15 | a | 40 | a | 65 | a | 90 | a |
| 16 | a | 41 | a | 66 | a | 91 | a |
| 17 | b | 42 | a | 67 | a | 92 | a |
| 18 | a | 43 | a | 68 | a | 93 | a |
| 19 | b | 44 | a | 69 | a | 94 | a |
| 20 | a | 45 | a | 70 | a | 95 | a |
| 21 | a | 46 | a | 71 | a | 96 | a |
| 22 | b | 47 | a | 72 | a | 97 | a |
| 23 | b | 48 | a | 73 | a | 98 | a |
| 24 | a | 49 | a | 74 | a | 99 | a |
| 25 | a | 50 | a | 75 | a | 100 | a |