KMU 2025 Past Paper

Intrinsic factor secreted by parietal cells is essential for:

The Delta D cells in the Islets of Langerhans secrete:

Identify the main function of the duodenum:

Which stage of the swallowing process prevents food or liquid from being aspirated to the lungs?

Which type of nephron is responsible for the development of osmotic gradients in the renal medulla?

Which of the following best describes how the distal convoluted tubule contributes to the regulation of blood pH in the body?

The sodium potassium pumps in the distal convoluted tubule are activated by:

If a person drinks excessive amounts of water, how does the kidney respond to maintaining osmoregulation?

The primary function of glomerular capillaries is:

In a heat stroke, the hypothalamus will detect an increase in core body temperature. Which of the following responses is triggered?

Which nitrogenous waste has the lowest solubility in water?

By nature, the human excretory system is:

Hyperparathyroidism may lead to the formation of:

In somatic cell hybridization, which two cells are fused to produce monoclonal antibodies?

In molecular diagnostics, the primary function of DNA/RNA probes is to:

A set of uniform proteins generated by genetically identical immune cells are:

Which biotechnological product is used to replace an abnormal gene in a patient's cells?

In Watson and Crick's DNA model, which of the following pairs with Cytosine?

Fats are considered a very efficient source of energy because they:

The junction between two consecutive neurons where information is transmitted from one neuron to the next is called:

All of the following are functions of Golgi bodies EXCEPT:

Which ion is tenfold higher in concentration outside the membrane of a neuron during resting potential?

All of the following are modes of transmission of AIDS, EXCEPT:

Which organelle of the cell is involved in the detoxification of toxins and poisonous compounds?

The active site is important in enzyme action because:

The idea that acquired characters are inherited is part of:

Which disease is caused by an enveloped virus?

Glycoproteins are commonly found in:

Which structure enables the exchange of material between nucleus and cytoplasm?

The high specific heat capacity of water is due to:

The contracted region of a chromosome that attaches to spindle fibers is called:

Touching a sharp object stimulates pain receptors. This information is carried to the central nervous system by the:

The number of chromosomes in a haploid cell are:

Which of the following is a branched polysaccharide found in animals:

A substance that binds to an enzyme, but NOT at the active site and reduces the enzyme activity is called a:

On the basis of morphological classification, influenza virus is an example of:

Which of the following is NOT a globular protein?

The state, when a neuron is NOT conducting an impulse during resting membrane potential is called:

Which of the following waves travel along a neuron during nerve impulse conduction?

The reticular formation in the brain runs through which specific regions?

Enzymes increase the rate of reaction by:

A diabetic patient is advised to avoid both sucrose and lactose, because they both:

Match the CORRECT structure of the brain with its function:

Living cells DO NOT directly acquire energy released from the breakdown of food molecules because:

Which properties of water enable it to circulate in living bodies and act as a transport medium?

A scientist cuts the tails of mice for several generations, but their offspring are always born with tails. This rejects:

How are the phospholipid molecules arranged in the plasma membrane?

The structure of RNA consists of:

The constant diameter of DNA is maintained by pairing:

Identify the CORRECT option that matches the sugar with its carbon number and functional group:

The CORRECT sequence of events in a reflex arc is:

Fertilisation normally occurs in the:

Which cells of the fallopian tube moisten and nourish the [ovum/embryo]?

Which of the following is NOT an accessory gland of the human male reproductive system?

Syphilis is caused by what kind of bacteria:

What is FALSE about cartilages?

Bones provide a rigid framework with an inorganic matrix of:

An important feature of bone remodeling is bone breakdown. Which cell carries out this function?

Myofibrils consist of small contractile units called:

Which muscle type is under conscious control and is multinucleated?

Which part of the sarcomere contain both actin and myosin filament?

The primary role of calcium ions in muscle contraction is to:

Which of the following is an example of a fibrous joint?

Which of Mendel's laws can best explain why a child may inherit brown eyes even if one parent has blue eyes?

What is the significance of the 9:3:3:1 ratio in a dihybrid cross?

In crossing over, an exchange of maternal and paternal chromatid parts occurs while homologous chromosomes are paired during which stage of meiosis?

Linked genes DO NOT follow Mendel's Law of Independent Assortment because:

A carrier female for an X-linked recessive disorder:

Which of the following is an X-linked recessive disorder in humans?

Which of the following CORRECTLY describes the expected outcome of children from a carrier mother for haemophilia ($X^HX^h$) and a normal father ($X^HY$)?

The heart is surrounded by a tough, inelastic double membranous covering called:

Which phase of the cardiac cycle is characterized by the opening of semilunar valves?

Which part of the heart's conducting system delays the impulse from atria to the ventricles?

The heartbeat sound 'LUB' is produced on closure of:

What is the primary function of lymphatic vessels?

The primary role of helper T-cells in immune response is:

Identify the primary feature of the specific line of defense.

Which of the following best describes Inspiratory Reserve Volume (IRV)?

During gaseous exchange in human respiration, enzyme carbonic anhydrase is directly involved in the:

What happens when the external intercostal muscles contract during inhalation in humans?

The primary effect of smoking on the respiratory system:

Consider the chlorination of methane to methyl chloride, the attack of chlorine free radical on methane, occurs in which phase?

A patient with pancreatic insufficiency shows reduced activity of an enzyme that hydrolyzes the first peptide bond at the carboxyl end of proteins and peptides. Which enzyme is deficient?

The force of attraction due to temporary dipoles is:

A student adds bromine water to ethene and observes rapid decolourisation. What makes ethene more reactive than ethane in this reaction?

What best describes the overall reaction in electrophilic aromatic substitution in benzene?

Real gases DO NOT reach absolute zero in practice because:

The energy of an orbital is determined by:

The Ksp value of salt AB ⇌ A⁺ + B⁻ is 9×10⁻⁶. Its molar solubility will be:

Water changes from a liquid at 4°C to ice at 0°C. What is the change in volume?

For an exothermic reaction, the energy level of reactant is:

In an electrolytic cell when the current passes through a solution, the anode is:

An increase in the internal energy of a chemical system can lead to all EXCEPT:

In ethene molecule, each carbon atom has three hybridized sp² orbitals which are:

Which of the following best explains the reaction between Beryllium (Be) and Oxygen (O)?

The value of R in atm.dm³.mol⁻¹.K⁻¹ is:

The rate of a chemical reaction changes with:

According to Planck's quantum theory, if the frequency of a photon is doubled, the value of h will be?

The specific rate constant (k) of a reaction is related to the concentration of reactants:

An experiment shows that heating a 'protein' disrupts the alpha helix structure. Which protein structure is mainly affected?

Which of the following is NOT a postulate of the kinetic molecular theory of gases?

Spectral series for the hydrogen spectrum are:

The most electronegative element in the periodic table is:

If ΔH for a reaction is positive, then by decreasing temperature, the reaction will:

The addition of water to propene in the presence of sulfuric acid produces:

In which of the following molecules does the central atom use sp² hybridization?

In a molecule of phenol, the carbon atom which is attached to the -OH group is:

Which one of the following is a planar molecule?

Which of the following has the highest bond energy?

Identify the CORRECT electronic configuration for an element with atomic number 24:

Balance the equation using the oxidation number method: Cu + H₂SO₄ → CuSO₄ + SO₂ + H₂O

The compound that reacts with phenyl hydrazine to form a crystalline phenyl hydrazone derivative is:

If 4g of H₂ reacts with 2 moles of O₂ to form water, which one is the excess reagent?

If 10 moles of magnesium react with excess of oxygen. Calculate the theoretical yield of magnesium oxide (MgO). (Molar mass of Mg = 24g/mol, O = 16g/mol)

Acetaldehyde reacts with ethanol in the presence of acid and initially produces:

IUPAC name of the given compound Br-CH₂-CH₂-CO-CH₃ is?

Consider the given reaction: 2Na + Cl₂ → 2NaCl. If 4 moles of Na and 2 moles of Cl₂ are reacted, how much Cl₂ will remain unreacted?

The electronic configuration of Fe³⁺ (Z=26) is:

If pressure and temperature of a gas are doubled, the new volume will be:

IUPAC name of CH₃-CH₂-CH₂-CH₂-C≡CH is:

According to Le Chatelier's Principle, when the pressure of a gaseous equilibrium system is increased, the equilibrium shifts towards:

Consider a reaction 2A + B₂ → 2AB. Which of the following mixtures would make A the limiting reagent?

On increasing the temperature, the rate of reaction increases mainly because:

Given: Heat of sublimation of Na = 108 kJ/mol, Ionization energy of Na = 496 kJ/mol, Bond dissociation energy of Cl₂ = 121 kJ/mol, Electron affinity of Cl = -349 kJ/mol, and Enthalpy of formation of NaCl = -411 kJ/mol. Calculate the lattice energy of NaCl:

The molecular orbitals in benzene are:

According to Lenz's Law, the direction of induced current in a conductor is such that it:

In a pure capacitance AC circuit, the current:

In a full-wave rectifier using two diodes, the diodes D1 and D2 operate:

The energy (E) of a quantum is given by which equation?

In the hydrogen spectrum, the Brackett series lies in which region?

Which of the following statements best describes the nature of nuclear decay?

A boat moves 4 km east and then 3 km north. Another boat moves 3 km north first and then 4 km east. Which statement is CORRECT about their final displacements?

The area under the line on a displacement-time graph of a car moving with uniform velocity would form a:

A car starts from rest and moves with a uniform acceleration of 3 m/s^2. What will be its velocity after 5 seconds?

A passenger is standing in a stationary bus. When the bus suddenly starts moving forward, the passenger falls backward. Which phenomenon best explains this observation?

A ball is projected at an angle of 45 degrees with an initial speed of 20 m/s on earth. How does RW (Range without air resistance) compare to RA (Range with air resistance)?

A 0.02 kg bullet moving at 300 m/s embeds itself in a 2 kg block at rest on a smooth surface. What is the velocity of the block-bullet system just after impact?

Which of the following statements about projectile motion is CORRECT?

The rate of doing work at any instant of time is called:

A 5kg body falls from the height of 30m towards the ground. All its potential energy is converted into heat on impact. What is the heat energy produced? (Use g = 9.8 m/s^2)

Two students, A and B, each carry a 20kg load to the top of a 10m high staircase. Student A takes 10sec, while student B takes 20sec. Which statement is CORRECT?

A wheel of radius 0.4m has an angular acceleration of 6 rad/s^2. The linear acceleration is:

If an object is moving anticlockwise along a circular path, in a horizontal plane on a page then the direction of its angular velocity is:

If a particle moves along a circular path of radius r with angular displacement theta (in radians), then the arc length s is given by:

A ball of weight FG is falling vertically through air. If the drag force acting on it at some instant is FD, what is the net downward force on the ball?

Most kinds of fluid flow are turbulent rather than laminar because of:

According to the equation of continuity, when the cross-sectional area of a pipe decreases, the fluid velocity:

Water flows steadily through a pipe that gradually narrows. At the wider end, the velocity of water is 1 m/s. At the narrower end, the velocity is 3 m/s. Which statement is CORRECT about the pressure in the narrower end compared to the wider end?

What is the necessary condition of a wave motion?

A progressive wave is one which:

Speed of sound in air increases with:

A wave has a velocity v and frequency 100Hz. If the medium is changed so that velocity doubles but frequency remains constant, the new wavelength will be:

When a particle executing simple harmonic motion moves from the mean position to the extreme position, its kinetic energy:

Heat will spontaneously flow from:

The SI unit of molar specific heat is:

At a constant Pressure (Cp) and Volume (Cv), an ideal gas has Cv = 3/2 R. Then Cp will be?

The electric field at a point is defined as:

Coulomb's law fits well into:

The work done in moving a unit positive charge from one point to another while keeping the charge in electrostatic equilibrium is called:

If the potential difference (V) across a conductor is doubled, keeping resistance (R) constant, the power dissipated (P) becomes:

When the area vector A is parallel to the magnetic field B, what is the value of magnetic flux?

In the sentence 'Jogging every morning improves my mood,' what role does the gerund phrase play?

The meeting has been scheduled _____ 3 p.m. sharp.

"She studied hard; _____ she passed the exam with distinction." Choose the CORRECT transitional device:

She completed the task with great difficulty. Identify the CORRECT usage of passive voice.

Each of the boys _____ ambitious to lead the team.

"Revenge is a kind of wild justice." The sentence illustrates the use of:

The old man was feeble, barely able to walk. The word "feeble" means:

Which literary device involves using words or phrases that convey the opposite of their literal meaning?

All of the players forgot _____.

A medication dose starts at 100mg and halves each day. What will be the dose on day 4?

A library has 4 books on Shelf A and 8 books on Shelf B. Some books are removed from Shelf B such that both shelves now have exactly the same number of books. How many books were removed from Shelf B?

Ahmed ranks 10th in the class of 46 students. There are only 7 students below Bilal rank wise. How many students are there between Ahmed and Bilal?

How is Ali related to Mustafa? If Ali says, "Mustafa's mother is the only child of my grandmother."

A mobile company is deciding whether to collect personal user data for improving advertisement. Which of the following is a moral argument against collecting the data?

A father is 5 years older than twice his son's age. If the son is 12, what is the father's age?

Which number comes in the missing place? 200, 180, 162, 146, 132, ___

If 5 boxes of soap weigh 75 kilos and each box when empty weighs 3 kilos. What is total weight of the soaps?

Consider the sequence: 64, 32, 16, 8. What is the 10th term of this sequence?