KMU CAT 2021 original TestBy Bomvirtual.com / July 5, 2026 0% 0 votes, 0 avg 453 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081 Created by Bomvirtual.comKMU CAT past papers KMU CAT 2021 original Test 1 / 81 Category: KMU CAT 2021 Test 1) The amazing example of genetic and environmental influence on animal behavior is: A) Insight learning B) Habituation C) Imprinting D) Operant learning Imprinting is a behaviour influenced by genetics and environment, where young animals bond with caregivers during a critical period. 2 / 81 Category: KMU CAT 2021 Test 2) Capacitance of a parallel‑plate capacitor in the presence of an insulator with dielectric constant ε is C. If the dielectric is removed, the new capacitance will be: A) C + ε B) ε·C C) C – ε D) C/ε Capacitance C = εA/d; removing dielectric (ε → 1) reduces capacitance to C/ε. 3 / 81 Category: KMU CAT 2021 Test 3) The female reproductive cells in bryophytes are called: A) Archegonium B) Oosphere C) Both (B) and (C) D) Egg In bryophytes, the female reproductive cell is called egg/oosphere, housed in the archegonium (structure). 4 / 81 Category: KMU CAT 2021 Test 4) CH₃MgBr reacts with CH₂O to give: A) 1° Alcohol B) 2° Alcohol C) Carboxylic acid D) 3° Alcohol CH₃MgBr + HCHO forms 1° alcohol (CH₃CH₂OH) after hydrolysis. 5 / 81 Category: KMU CAT 2021 Test 5) An example of atrichous bacteria is: A) Bacilli B) Cocci C) Spirilla D) Vibrio Cocci (e.g., Staphylococcus) are atrichous (lack flagella); bacilli/vibrio/spirilla often have flagella. 6 / 81 Category: KMU CAT 2021 Test 6) All of the following are true regarding hepatitis A virus except: A) It is concerned with children B) It can cause prolonged illness up to 4 months C) It causes chronic liver disease D) It lives in feces Hepatitis A (HAV) does not cause chronic liver disease (unlike HBV/HCV). It spreads via faeces and is common in children. 7 / 81 Category: KMU CAT 2021 Test 7) Coordination number of an ion in ________: (Statement as provided – incomplete) A) 4 B) 6 C) 2 D) 8 The coordination number of an ion in NaCl is 6, as each Na⁺ is surrounded by 6 Cl⁻ ions in a cubic lattice. 8 / 81 Category: KMU CAT 2021 Test 8) If force on a body is plotted on the y‑axis and displacement on the x‑axis, work done is given by: A) Area under the curve B) None is true C) Each point on the curve D) Slope of the curve Work done = area under the force‑displacement curve (integral of F·dx). 9 / 81 Category: KMU CAT 2021 Test 9) The fertile time in the menstrual cycle is from: A) 9–15 days B) 6–8 days C) 22–28 days D) 16–22 days The fertile window in the menstrual cycle typically occurs from days 9–15, around ovulation. 10 / 81 Category: KMU CAT 2021 Test 10) The alveoli are lined by: A) Columnar epithelium B) Transitional epithelium C) Cuboidal epithelium D) Squamous epithelium Alveoli are lined by squamous epithelium for efficient gas diffusion. 11 / 81 Category: KMU CAT 2021 Test 11) The term “survival of the fittest” was used by: A) Lamarck B) Herbert Spencer C) Aristotle D) Charles Darwin Herbert Spencer coined “survival of the fittest”; Darwin used “natural selection.” 12 / 81 Category: KMU CAT 2021 Test 12) Besides giving out secretory vesicles, Golgi bodies are also concerned with: A) Plastids B) Lysosomes C) Nucleus D) Ribosomes Golgi bodies form lysosomes (containing digestive enzymes) besides packaging secretory vesicles. 13 / 81 Category: KMU CAT 2021 Test 13) Which hydrocarbon gives an acid‑base reaction? A) 1‑Butyne B) Toluene C) 2‑Butyne D) 2‑Butene 1‑butyne (terminal alkyne) reacts with NaNH₂ in an acid‑base reaction (H⁺ from ≡C–H is acidic). 14 / 81 Category: KMU CAT 2021 Test 14) The volume occupied by 1.6 g of O₂ at S.T.P. is: A) 24 dm³ B) 1.12 dm³ C) 22.4 dm³ D) 2.24 dm³ 1.6 g O₂ = 0.05 mol (1.6/32). At STP, 1 mol = 22.4 dm³ ⇒ 0.05 mol = 1.12 dm³. 15 / 81 Category: KMU CAT 2021 Test 15) Which oxidizing agent is used for oxidation of aldehydes to carboxylic acids? A) Acidified KMnO₄ B) Acidified K₂Cr₂O₇ C) Ag₂O D) All of the above Aldehydes oxidise to carboxylic acids using KMnO₄, K₂Cr₂O₇, or Ag₂O (Tollens’ reagent). 16 / 81 Category: KMU CAT 2021 Test 16) When electromagnetic radiation falls on a surface and the angle between reflected and refracted light is 90°, this angle is called: A) Brewster’s angle B) Inclination angle C) Any angle (both rays are perpendicular) D) Critical angle At Brewster’s angle, reflected and refracted light are 90° apart, and reflected light is polarised. 17 / 81 Category: KMU CAT 2021 Test 17) The characteristics of protozoa are most closely similar to those of: A) Plants B) Animals C) Bacteria D) Viruses Protozoa resemble animals (motility, heterotrophy) more than plants/bacteria/viruses. 18 / 81 Category: KMU CAT 2021 Test 18) Albumin is an example of: A) None of the above B) Conjugated proteins C) Both (A) & (B) D) Simple proteins Albumin is a simple protein made only of amino acids, lacking non‑protein components found in conjugated proteins. 19 / 81 Category: KMU CAT 2021 Test 19) Which subshell in the fourth transition series is in the process of completion? A) 3d B) 6d C) 4d D) 5d The 4th transition series (6d) is incomplete (elements beyond atomic number 112 are synthetic/unstable). 20 / 81 Category: KMU CAT 2021 Test 20) Which does not show anisotropy? A) Diamond B) Glass C) Graphite D) Rock salt Glass is amorphous and isotropic; diamond, graphite, and rock salt are crystalline/anisotropic. 21 / 81 Category: KMU CAT 2021 Test 21) A train of length 100 m is crossing a bridge of 200 m length. What is the time taken by the train to cross the bridge? (Statement as provided – speed missing) A) 15 sec B) 25 sec C) 20 sec D) 10 sec Total distance = 100 m (train) + 200 m (bridge) = 300 m. At 20 m/s, time taken = 15 seconds. 22 / 81 Category: KMU CAT 2021 Test 22) Three capacitors each of 2 μF are connected in parallel to a 12 V battery. Their equivalent capacitance (in μF) is: A) 6 B) 12 C) 9 D) 18 Parallel capacitors: C_eq = C₁ + C₂ + C₃ = 2 μF × 3 = 6 μF. 23 / 81 Category: KMU CAT 2021 Test 23) The addition of hypochlorous acid to 1‑butene gives: A) None of the above B) 1‑chloro‑1‑butanol C) Both (A) and (B) D) 2‑chloro‑1‑butanol HOCl (hypochlorous acid) adds to 1‑butene via Markovnikov’s rule, forming 2‑chloro‑1‑butanol (Cl on the more substituted carbon). 24 / 81 Category: KMU CAT 2021 Test 24) The following graph shows the effect of altering a factor on the rate of an enzyme‑controlled reaction. What is shown on the x‑axis? (Graph image not provided) A) pH B) Substrate concentration C) Enzyme concentration D) Temperature The bell‑shaped curve typically represents pH (X‑axis) vs. enzyme activity (optimal pH at peak). 25 / 81 Category: KMU CAT 2021 Test 25) Alternating voltage and alternating current have a phase difference of 90° with each other in a circuit called: A) Pure capacitive circuit B) Both (A) and (B) are true C) RLC series AC circuit at resonance D) Pure inductive circuit Pure capacitive (current leads voltage by 90°) and pure inductive (voltage leads current by 90°) circuits show a 90° phase difference. 26 / 81 Category: KMU CAT 2021 Test 26) Which is the strongest Lewis base? A) All have equal strength B) Benzene C) Acetylene D) Ethylene Acetylene (C₂H₂) is the strongest Lewis base due to its sp‑hybridised carbons and high electron density. 27 / 81 Category: KMU CAT 2021 Test 27) The gland(s) that serve as both exocrine and endocrine is/are: A) Gonads B) Adrenal gland C) Pancreas D) Both (A) and (B) Pancreas (exocrine: digestive enzymes; endocrine: insulin/glucagon) and gonads (exocrine: gametes; endocrine: sex hormones) are mixed glands. 28 / 81 Category: KMU CAT 2021 Test 28) Enzymes have a 3D shape due to which type of protein structure? A) Quaternary structure B) Primary structure C) Tertiary structure D) Secondary structure Enzymes’ functional 3D shape arises from tertiary structure (folding of secondary structures). 29 / 81 Category: KMU CAT 2021 Test 29) Which one is a double‑ring structure? A) Thymine B) Uracil C) Cytosine D) Guanine Guanine (and adenine) are purines with a double‑ring structure, while cytosine, thymine, and uracil are single‑ring pyrimidines. 30 / 81 Category: KMU CAT 2021 Test 30) Which element can form super oxides? A) Cs B) K C) Rb D) All of the above Cs, Rb, and K can all form superoxides (e.g., KO₂) due to their large atomic sizes stabilising the O₂⁻ ion. 31 / 81 Category: KMU CAT 2021 Test 31) If an object revolves in a circular path of radius 2 m and traverses an arc of length 4 m, the angle (in radians) subtended at the centre is: A) None of the above B) 2 rad C) 1 rad D) 2π rad Angle (θ) = arc length (s) / radius (r) = 4 m / 2 m = 2 radians. 32 / 81 Category: KMU CAT 2021 Test 32) The bond order of H₂⁺ is: A) 1 B) 1.5 C) 2 D) ½ H₂⁺ has 1 electron in σ1s orbital ⇒ Bond order = (1–0)/2 = ½. 33 / 81 Category: KMU CAT 2021 Test 33) The lifetime of an electron in a ________ state is _________ times more than in an ordinary excited state. (Statement as provided) A) 10³ B) 10³ C) 100 D) 10⁵ Electrons in metastable states live ~10⁵ times longer than in ordinary excited states before decaying. 34 / 81 Category: KMU CAT 2021 Test 34) In simple harmonic motion, the restoring force is minimum at: A) Extreme position B) Midpoint of mean and extreme C) Mean position D) None of the above In SHM, the restoring force is minimum at the mean position (F ∝ displacement, so F = 0 at equilibrium). 35 / 81 Category: KMU CAT 2021 Test 35) The source of the restriction enzyme Sam1 is: A) Streptococcus pyogenes B) Staphylococcus aureus C) Streptomyces achromogenes D) Serratia marcescens The restriction enzyme SamI is derived from Serratia marcescens. 36 / 81 Category: KMU CAT 2021 Test 36) According to Raoult’s law, relative lowering of vapour pressure for a solution is equal to: A) Mole fraction of the solute B) Moles of solute C) Mole fraction of the solvent D) Moles of solvent Raoult’s law: Relative lowering of VP = mole fraction of solute (ΔP/P° = X₂). 37 / 81 Category: KMU CAT 2021 Test 37) Chances for a son or daughter in human birth is: A) 1:1 between son and daughter B) None of the above C) 1:3 between son and daughter D) 3:1 between son and daughter Human sex determination is 1:1 (50% son, 50% daughter) because males produce equal X and Y sperm. 38 / 81 Category: KMU CAT 2021 Test 38) A projectile is thrown at 20 m/s at an angle of 60° from horizontal. At the highest point, the angle between its velocity and acceleration is: A) 0° B) 45° C) 90° D) None of the above At the highest point, velocity is horizontal (θ = 0°), and acceleration (g) is vertical ⇒ 90° angle between them. 39 / 81 Category: KMU CAT 2021 Test 39) A step‑down transformer: A) Increases the output voltage B) Decreases the output power C) Increases the output power D) Increases the output current A step‑down transformer decreases voltage but increases output current (P = VI remains constant). 40 / 81 Category: KMU CAT 2021 Test 40) Kirchhoff’s current law (KCL) is based upon conservation of: A) Charge B) Momentum C) Mass D) Energy Kirchhoff’s Current Law (KCL) is based on conservation of charge (total current entering a junction = total current leaving). 41 / 81 Category: KMU CAT 2021 Test 41) Which is an unpaired facial bone? A) Maxilla B) Palatine C) Mandible D) Lacrimal Mandible is the only unpaired facial bone; others (maxilla, lacrimal, palatine) are paired. 42 / 81 Category: KMU CAT 2021 Test 42) A container containing two moles of liquid ethanol and oxygen gas was sparked together to form CO₂ and H₂O. Identify the limiting reagent: A) None of the above B) Oxygen gas C) Liquid ethanol D) Both (A) and (B) The balanced reaction is C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O. For 2 moles of ethanol, 6 moles of O₂ are needed. If O₂ is insufficient, it acts as the limiting reagent. 43 / 81 Category: KMU CAT 2021 Test 43) The peptidoglycan layer is found in the cell of: A) Fungi B) Both (A) and (B) C) Algae D) Bacteria Peptidoglycan is unique to bacterial cell walls (absent in algae/fungi). 44 / 81 Category: KMU CAT 2021 Test 44) Which one is a strong oxidizing agent? A) All of the above B) Mn⁺⁴ C) Mn⁺¹ D) Mn⁺⁶ All Mn⁺⁴, Mn⁺⁶, Mn⁺⁷ are strong oxidizers (e.g., MnO₄⁻ is Mn⁺⁷). Mn⁺¹ is incorrect (typo in option B). 45 / 81 Category: KMU CAT 2021 Test 45) All of the following apply to cartilage except: A) They can be reshaped B) No inorganic salts C) Mostly contain type II collagen D) No blood circulation Cartilage contains inorganic salts (e.g., calcium in calcified cartilage). 46 / 81 Category: KMU CAT 2021 Test 46) The relative atomic mass of a neutron is: A) 1.0087 B) 1.00073 C) 1.0073 D) 1.00087 Relative atomic mass of a neutron is 1.0087 (slightly > 1 due to binding energy). 47 / 81 Category: KMU CAT 2021 Test 47) Which is not an electrophile? A) AlCl₃ B) Br⁺ C) NH₄⁺ D) NO₃⁺ NH₄⁺ (ammonium ion) is not an electrophile; it lacks electron‑deficient centres (unlike Br⁺, AlCl₃, NO₃⁺). 48 / 81 Category: KMU CAT 2021 Test 48) Hagfish belongs to: A) Cartilaginous fishes B) Both (A) and (B) C) Bony fishes D) Cyclostomes Hagfish are cyclostomes (jawless vertebrates), not bony/cartilaginous fish. 49 / 81 Category: KMU CAT 2021 Test 49) Myxospores are the spores produced by: A) Plants B) Bacteria C) Algae D) Fungi Myxospores are produced by bacteria (e.g., Myxococcus) during stress; fungi/plants produce other spores. 50 / 81 Category: KMU CAT 2021 Test 50) If the frequency of incident radiation in the photoelectric effect is increased beyond threshold frequency, it will affect: A) Stopping potential B) Photoelectric current C) Both (A) and (B) D) Maximum kinetic energy of photoelectrons Increasing frequency beyond threshold affects stopping potential (increases) and max KE of photoelectrons (E = hν – φ), but not current (depends on intensity). 51 / 81 Category: KMU CAT 2021 Test 51) In mitochondrial DNA, the codon AGG codes for: A) Arginine B) Tryptophan C) Stop codon D) Methionine In mitochondrial DNA, AGG is a stop codon (codes for arginine in nuclear DNA). 52 / 81 Category: KMU CAT 2021 Test 52) Which metabolic pathway is common to both fermentation and cellular respiration? A) Synthesis of acetyl‑CoA B) Glycolysis C) Krebs cycle D) Electron transport chain Glycolysis is common to both fermentation and cellular respiration, breaking glucose into pyruvate. 53 / 81 Category: KMU CAT 2021 Test 53) In fructose, the ketone functional group is present on carbon number: A) 2 B) 6 C) 1 D) 5 In fructose, the ketone group is at C‑2 (C=O in the furanose ring). 54 / 81 Category: KMU CAT 2021 Test 54) The heavily doped region of a transistor is called: A) Emitter B) Collector C) Anyone can be heavily doped D) Base The emitter is heavily doped to inject majority carriers into the base. 55 / 81 Category: KMU CAT 2021 Test 55) The largest phylum of animals is: A) Chordata B) Arthropoda C) Annelida D) Coelenterata Arthropoda (insects, spiders, crustaceans) is the largest phylum (> 1 million species). 56 / 81 Category: KMU CAT 2021 Test 56) Nitrogen gas can be fixed spontaneously by: A) All of the above B) Biological fixation C) Atmospheric fixation D) Industrial fixation Nitrogen fixation occurs via industrial (Haber process), biological (nitrogenase), and atmospheric (lightning) methods. 57 / 81 Category: KMU CAT 2021 Test 57) A plant with heterozygous alleles for height is: A) Dihybrid B) Hybrid C) Heterotype D) Dual hybrid A plant with heterozygous alleles (e.g., Tt) for a trait is called a hybrid (not dihybrid, which involves two genes). 58 / 81 Category: KMU CAT 2021 Test 58) Which compound is more reactive? A) Nitrobenzene B) 1,3‑Dinitrobenzene C) Benzene D) 1,3,5‑Trinitrobenzene Nitrobutene is more reactive than benzene/dinitrobenzene due to less electron withdrawal and ring strain. 59 / 81 Category: KMU CAT 2021 Test 59) Reluctance of a ferromagnetic material is analogous to __________ for a conductor: A) Inductance B) Capacitance C) Conductance D) Resistance Reluctance in magnetism is analogous to resistance in circuits (opposes magnetic flux). 60 / 81 Category: KMU CAT 2021 Test 60) Which element has the same oxidation number in all its compounds? A) Both (B) & (C) B) Oxygen C) Fluorine D) Beryllium Fluorine always has an oxidation state of –1, and beryllium is always +2 in compounds. Oxygen varies (e.g., –2 in oxides, –1 in peroxides). 61 / 81 Category: KMU CAT 2021 Test 61) The protein that forms the matrix of the HIV virus is: A) gp41 B) p17 C) Both A and B D) gp120 The p17 protein forms the matrix of HIV, while gp120/gp41 are envelope proteins. 62 / 81 Category: KMU CAT 2021 Test 62) When ethanol is taken in excess and temperature is kept at 140°C with conc. H₂SO₄, dehydration gives: A) None of the above B) Ethyl hydrogen sulphate C) Ethene D) Ether Excess ethanol at 140°C with conc. H₂SO₄ yields diethyl ether (C₂H₅OC₂H₅); at 170°C, it forms ethene. 63 / 81 Category: KMU CAT 2021 Test 63) The rare site of infection in the urinary tract is: A) Urethra B) Pelvis C) Ureter D) Urinary bladder The ureter is the rarest site of UTI due to its narrow lumen and constant urine flow, unlike the urethra/bladder/pelvis. 64 / 81 Category: KMU CAT 2021 Test 64) One up quark and two down quarks combine to make a: A) Positron B) Neutron C) Electron D) Proton 1 up quark (u) + 2 down quarks (d) = neutron (udd); proton = uud. 65 / 81 Category: KMU CAT 2021 Test 65) The process where DNA fragments are transferred to a nylon sheet from a gel is called: A) Southern blotting B) Western blotting C) Northern blotting D) All of the above Southern blotting transfers DNA fragments to a membrane for detection. Northern (RNA) and Western (proteins) are different techniques. 66 / 81 Category: KMU CAT 2021 Test 66) 3‑Ethyl‑2‑pentene on ozonolysis gives: A) 3‑Pentanone and ethanal B) 7‑Heptanone C) 2‑Pentanone D) Pentanal 3‑Ethyl‑2‑pentene on ozonolysis gives 3‑pentanone (CH₃COCH₂CH₂CH₃) and ethanal (CH₃CHO). 67 / 81 Category: KMU CAT 2021 Test 67) The number of orientations of a subshell for which n = 4 and l = 3 is: A) 3 B) 7 C) 5 D) 1 For n = 4, l = 3 (f‑subshell), orbitals have 7 orientations (mₗ = –3 to +3). 68 / 81 Category: KMU CAT 2021 Test 68) For an endothermic reaction: A) Forward activation energy < reverse activation energy B) Forward activation energy = reverse activation energy C) No change D) Forward activation energy > reverse activation energy For endothermic reactions, forward activation energy (Ea_fwd) > reverse (Ea_rev) due to higher product energy. 69 / 81 Category: KMU CAT 2021 Test 69) Which is the most stable hydrocarbon? A) trans‑2‑Butene B) Isobutylene C) cis‑2‑Butene D) 1‑Butene Trans‑2‑butene is most stable due to minimal steric hindrance (vs. cis/isobutylene/1‑butene). 70 / 81 Category: KMU CAT 2021 Test 70) A person weighing 400 N at the Earth’s surface. When taken to a higher altitude, the weight will be: A) Equal to 500 N B) Zero C) Less than 500 N D) More than 400 N Weight decreases at higher altitudes (g reduces with distance from Earth’s centre), so < 400 N. 71 / 81 Category: KMU CAT 2021 Test 71) Which contains the most acidic proton? A) Ether B) Alcohol C) Phenol D) Thiol Thiol (R–SH) has the most acidic proton (weaker S–H bond vs. O–H in alcohols/phenols). 72 / 81 Category: KMU CAT 2021 Test 72) Lenz’s law is based on: A) Law of conservation of current B) Law of conservation of magnetization C) Law of conservation of charges D) Law of conservation of energy Lenz’s law is based on the conservation of energy, ensuring induced currents oppose the change in magnetic flux. 73 / 81 Category: KMU CAT 2021 Test 73) The solid part of milk produced by coagulation is curd and the liquid is whey. This whey is used as a food source for: A) Bacteria B) Either A or B C) Algae D) Yeast Whey is used as a nutrient source for bacteria (e.g., in fermentation) or yeast (e.g., in lactose utilization). 74 / 81 Category: KMU CAT 2021 Test 74) Assembly of the two subunits 40S and 60S of ribosomes gives: A) 80S unit B) 100S unit C) 90S unit D) 70S unit Eukaryotic ribosomes assemble as 80S (40S + 60S); prokaryotes have 70S (30S + 50S). 75 / 81 Category: KMU CAT 2021 Test 75) Ethylene glycol is oxidized into carboxylic acid by: A) Lead tetraacetate B) Acidified KMnO₄ C) Periodic acid D) Both (A) and (B) Ethylene glycol is oxidized to oxalic acid (not carbolic acid) by acidified KMnO₄ (strong oxidizer). 76 / 81 Category: KMU CAT 2021 Test 76) The formation of primitive streak occurs during which stage of embryogenesis? A) None of the above B) Blastula C) Neurula D) Gastrula The primitive streak forms during gastrulation, marking the beginning of germ layer differentiation. 77 / 81 Category: KMU CAT 2021 Test 77) Which of the following molecules cannot form hydrogen bonding among themselves? A) (CH₃–CH₂)₃N B) CH₃CHO C) All of the above D) CH₂O None of the given molecules (CH₂O, CH₃CHO, (CH₃–CH₂)₃N) can form strong hydrogen bonds among themselves. 78 / 81 Category: KMU CAT 2021 Test 78) Tactition receptors are abundant in human: A) Sole B) Back of the hand C) Palm D) Lips Lips have the highest density of tactile (Meissner’s) receptors for fine touch. 79 / 81 Category: KMU CAT 2021 Test 79) The bond order of O₂²⁺ is: A) None of the above B) Two C) Zero D) One Bond order of O₂²⁺ = 2 (σ2s² σ2s² σ2pz² π2px² π2py² π2px⁰ π2py⁰). 80 / 81 Category: KMU CAT 2021 Test 80) If the absolute temperature of deuterium is made 16 times its normal value, then the speed of sound waves will increase by a factor of: A) 16 B) 8 C) None is true D) Speed remains the same Speed of sound in a gas is ∝ √(T). If temperature (T) increases 16×, speed increases 4× (but none match; likely a typo in options). 81 / 81 Category: KMU CAT 2021 Test 81) Which one of the following has no cleavage plane? A) NaCl crystals B) Copper crystals C) Ice D) Graphite Copper crystals (metallic) have no cleavage planes, unlike NaCl (ionic), graphite (layered), or ice (hydrogen‑bonded). Your score is 0% Restart quiz
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