Aga Khan University AKU Mock Test 4

An unmanned exploratory space vehicle is accelerated to 0.85c as it leaves the solar system. Years later, a stationary extra-terrestrial watches the vehicle pass and measures the length of the vehicle to be 12.64 m. What was the length of the vehicle on earth before it began its trip?

AKU Practice Mock 3
Physics
A) 8.44 m
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B) 12.64 m
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C) 18.23 m
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D) 24.0 m
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An object on a string is traveling in a circular path as shown.
If the string breaks when the object is at point Z, which pathway will the object follow?

AKU Practice Mock 3
Physics
A) A
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B) B
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C) C
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D) D
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A proton (mass m and charge +e) and an alpha-particle (mass 4m and charge +2e) are projected with the same kinetic energy at right angles to the uniform magnetic field. Which one of the following statements will be true?

AKU Practice Mock 3
Physics
A) The alpha-particle will be bent in a circular path with a small radius that for the proton
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B) The radius of the path of the alpha-particle will be greater than that of the proton
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C) The alpha-particle and the proton will be bent in a circular path with the same radius
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D) The alpha-particle and the proton will go through the field in a straight line
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Three charged objects are arranged as shown.

What is the magnitude of the net electric force on object B due to the presence of objects A and C?

AKU Practice Mock 3
Physics
A) 1.5 N
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B) 2.1 N
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C) 2.7 N
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D) 3.3 N
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In an automatic clothes dryer, a hollow drum moves the clothes in a vertical circle of diameter 0.75 m. The dryer is designed so that the clothes tumble and do not simply stick to the drum as it rotates. What is the speed at which the drum must rotate so that a 0.425 kg sweater at the top of the drum will just begin to tumble?

AKU Practice Mock 3
Physics
A) 1.8 m/s
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B) 1.9 m/s
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C) 2.0 m/s
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D) 2.1 m/s
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DeBroglie theorized that all moving objects emit waves (matter waves) based on their momentum (λ = h/mv). Accordingly, as your team’s defensive end, it is your job to stop the other team’s 250 pound fullback. If you could hear the fullback’s matter waves and you listened as the opposing fullback received the ball and accelerated toward you, what sound would you hear?

AKU Practice Mock 3
Physics
A) An increase in loudness and an increase in frequency
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B) An increase in loudness and a decrease in frequency
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C) A decreasing loudness and an increasing frequency
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D) A decreasing loudness and a decreasing frequency
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A radioactive decay rate of radioactive elements is found to be 1000 disintegrations per second at a certain time. If the half-life of the element is 1 second, the decay rate after one second is _________ and after three seconds is _________.

AKU Practice Mock 3
Physics
A) 500, 125
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B) 1000, 1000
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C) 125, 500
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D) 100, 10
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A 0.40 m long copper wire is held perpendicularly to a 0.082 T magnetic field as shown. What is the magnitude and direction of the magnetic force on the copper wire when the switch is closed?

AKU Practice Mock 3
Physics
A) A
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B) B
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C) C
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D) D
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Assume that every projectile fired by the toy cannon shown below experiences a constant net force F along the entire length of the barrel. If a projectile of mass m leaves the barrel of the cannon with a speed v, at what speed will a projectile of mass 2m leave the barrel?

AKU Practice Mock 3
Physics
A) 0.5v
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B) 0.7v
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C) v
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D) 2v
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A container encloses 2 mole of an ideal gas that has molar mass M1 and 0.5 mol of a second ideal gas that has molar mass M2 = 3M1.

What fraction of the total pressure on the container wall is attributable to the second gas?

AKU Practice Mock 3
Physics
A) 0.15
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B) 0.20
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C) 0.25
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D) 0.40
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Protons are found in the nucleus of the atom. The nuclear protons with the greatest mass are located

AKU Practice Mock 3
Physics
A) In the Hydrogen atom
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B) In the Carbon atom
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C) In the Radon atom
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D) In the Uranium atom
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A student drops a bar magnet downward through a 1.0 m long plastic tube and then through a 1.0 m long copper tube of equal diameter. What will happen to the magnet in each situation?

AKU Practice Mock 3
Physics
A) Come to rest about halfway down each tube
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B) Take longer to fall through the copper tube
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C) Take longer to fall through the plastic tube
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D) Take the same time to fall through each tube
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An object (O) is placed in front of a concave mirror as shown in the diagram below. Which of the following choices best describes the image formed?

AKU Practice Mock 3
Physics
A) Virtual and magnified
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B) Inverted and magnified
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C) Virtual and reduced
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D) Real and inverted
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In a moving coil galvanometer, the magnetic pole pieces are made cylindrical and a soft iron core is placed at the center of the coil. The purpose for doing so is

AKU Practice Mock 3
Physics
A) To make the magnetic field strong
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B) To make the magnetic field strong and radial
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C) To make the magnetic field uniform
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D) To make the magnetic field strong and uniform
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Suppose that there exists a planet that goes around the sun eight times as fast as the Earth. What is the ratio of the orbital radius of this planet to the orbital radius of the Earth?

AKU Practice Mock 3
Physics
A) 0.15
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B) 0.25
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C) 0.40
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D) 0.63
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A simple pendulum is executing simple harmonic motion with a time period T. If the length of the pendulum is increased by 21%, the percentage increase in the time period of the pendulum of increased length is

AKU Practice Mock 3
Physics
A) 10%
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B) 21%
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C) 30%
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D) 50%
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A person stands on a sled on a frozen lake. The friction between the sled and the ice is negligible. Initially, the person and the sled are motionless. The person then walks on the sled toward a dock, as shown below. Before reaching the end of the sled, the person stops walking. Which of the following describes the velocity of the person and the sled with respect to the dock after the person has stopped walking?

AKU Practice Mock 3
Physics
A) A
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B) B
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C) C
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D) D
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A 0.16 kg metal rod is placed in a horizontal magnetic field of 0.75 T and maintains contact with two vertical metal rails that are separated by a distance of 0.080 m. What is the current that must flow through the rod in order for it to remain at rest?

AKU Practice Mock 3
Physics
A) 13 A
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B) 26 A
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C) 35 A
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D) 43 A
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A 750 g peregrine falcon dives straight down towards a 400 g pigeon, which is flying level to the ground. Just before the falcon makes impact its velocity is 35 m/s. The velocity of the falcon and the pigeon in its talons immediately after impact is most nearly

AKU Practice Mock 3
Physics
A) 31.95 m/s
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B) 28.9 m/s
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C) 25.85 m/s
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D) 22.8 m/s
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What is approximately the maximum wavelength that will cause photoelectric emission from a metal surface having a work function of 2.00 eV?

AKU Practice Mock 3
Physics
A) 550 nm
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B) 620 nm
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C) 700 nm
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D) 780 nm
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Inheritance of color in a certain plant is known to follow simple Mendelian rules. Green leaf color is dominant and yellow leaf color is recessive to green. If a homozygous green-leafed plant is mated with a homozygous yellow-leafed plant, what proportion of offspring (F1 generation) would be expected to possess yellow leaves?

AKU Practice Mock 3
Biology
A) 0%
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B) 25%
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C) 50%
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D) 75%
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Which of the following men might have explained the auk’s loss of the ability to fly with the following hypothesis?

“Since the auk stopped using its wings, the wings became smaller, and this acquired trait was passed on to the offspring.”

AKU Practice Mock 3
Biology
A) Darwin
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B) Mendel
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C) Morgan
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D) Lamarck
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Intestinal nematodes evolved from a free-living to a parasitic form through developing

AKU Practice Mock 3
Biology
A) Special reproductive structures
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B) A symbiotic relationship with intestinal bacteria
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C) An external cuticle resistant to digestive enzymes
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D) An intricate nervous system
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Refer to the figure shown below.

Four statements are made.
I. The difference in heat of hydrogenation of 1,3,5-cyclohexatriene and benzene is 36.0 kJmol-1.
II. The difference in heat of hydrogenation of 1,3,5-cyclohexatriene and benzene is 150.5 kcalmol-1.
III. This difference is known as ‘Resonance Energy’.
IV. This shows that benzene is a much more stable organic compound.
Which of the above statements are CORRECT?

AKU Practice Mock 3
Chemistry
A) I, II, III and IV
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B) I, II and IV
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C) I, III and IV
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D) III and IV
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Duchenne’s muscular dystrophy is inherited as a sex-linked recessive allele. From whom does a male with this disease inherit the defective allele?

AKU Practice Mock 3
Biology
A) Only his mother
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B) Only his father
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C) The mother or the father, but not both
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D) Both the mother and the father
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The diagram below shows the lymphatic system of the human body

Which of the following substances are present in the lymph?
I. Chylomicrons.
II. Fat-soluble vitamins.
III. White Blood Cells.
IV. Red Blood Cells.

AKU Practice Mock 3
Biology
A) I, II, III and IV
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B) I, II and III
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C) II and III only
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D) I and III only
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A list of events occurring in the transmission of nerve impulse across the synapse is given below in a random order.
I. Opening of specific ion channels allows the entry of ions; a new action potential is generated in the post-synaptic neuron.
II. Neurotransmitter binds to the receptor on post synaptic membrane.
III. Synaptic vesicle fuses with pre-synaptic membrane, neurotransmitter release into synaptic cleft.
IV. Depolarization of pre-synaptic membrane.
V. Arrival of action potential at axon terminal.
Which of the following options represents these events in a correct order?

AKU Practice Mock 3
Biology
A) V → IV → III → II → I.
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B) I → II → III → IV → V
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C) I → II → IV → III → V
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D) V → IV → III → I → II
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Oxygen transport from the water to the bloodstream in the gills of fish occurs by diffusion. However, the efficiency of oxygen extraction by the blood is higher than would be predicted. This is because

AKU Practice Mock 3
Biology
A) Water flow and blood flow are parallel
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B) Diffusion of oxygen is much greater in water than in air
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C) Oxygen has a very high solubility in water
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D) Blood flows opposite to the direction of water movement
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A circular plasmid of 10,000 base pairs (bp) is digested with two restriction enzymes, A and B, to produce a 3000 bp and a 2000 bp bands when visualized on an agarose gel. When digested with one enzyme at a time, only one band is visible at 5000 bp.

If the first site for enzyme A (A1) is present at the 100th base, the order in which the remaining sites (A2, B1 and B2) are present is

AKU Practice Mock 3
Biology
A) 3100, 5100, 8100
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B) 8100, 3100, 5100
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C) 5100, 3100, 8100
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D) 8100, 5100, 3100
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Which of the following reagents can be used to convert cyclopentanol to bromocyclopentane, as shown below?

AKU Practice Mock 3
Chemistry
A) NaBr
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B) PBr3
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C) Br2, CCl4
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D) Br2, H2O
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Archaeopteryx is important to the study of evolution because

AKU Practice Mock 3
Biology
A) It is believed to represent the evolutionary link between the kingdom Plantae and the kingdom Fungi.
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B) It is believed to represent the evolutionary link between the class Reptilia and the class Aves
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C) It is believed to represent the evolutionary link between the sponges and the molluscs.
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D) It represents the last known evidence of the dinosaurs
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The reaction energy diagram for the electrophilic bromination of benzene with Br2 and FeBr3 is shown below.

Which position on the diagram corresponds to the species shown below?

AKU Practice Mock 3
Chemistry
A) II
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B) III
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C) IV
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D) V
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Stimulation of the parasympathetic nervous system causes each of the following EXCEPT

AKU Practice Mock 3
Biology
A) Acceleration of the heart rate
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B) Constriction of bronchi
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C) Pupillary constriction
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D) Increased peristalsis in the gastrointestinal tract
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A black male mouse (I) is crossed with a black female mouse, and they produce 15 black and 5 white offspring.
A different black male mouse (II) is crossed with the same female, and the offspring from this mating are 30 black mice.
Which of the following must be true?

AKU Practice Mock 3
Biology
A) The female mouse is homozygous
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B) Male mouse II is heterozygous.
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C) Two of the mice are heterozygous
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D) All the progeny of mouse II are homozygous
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Which of the following statements does NOT contribute to the evidence in support of evolution?

AKU Practice Mock 3
Biology
A) Sequences of fossils have been found that show a gradual series of changes in form among organisms
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B) Species thought to be related through evolution from a common ancestor show many anatomical similarities
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C) Similarities in chromosome structure, DNA sequence, and amino acid sequence suggest relationships among organisms descending through evolution from a common ancestor.
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D) The most well adapted individuals do not always produce the most fit offspring
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Curare acts on the same receptors as acetylcholine but does not cause the effect of acetylcholine, nor is it easily decomposed or cleaved by cholinesterases. Injection of curare into a person could result in
I. Epileptic seizures.
II. Muscle relaxation.
III. Suffocation.

AKU Practice Mock 3
Biology
A) II only
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B) III only
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C) I and II only
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D) II and III only
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Which statement about the fluid mosaic model of membrane structure is correct?

AKU Practice Mock 3
Biology
A) The less unsaturated the fatty acid tails of the phospholipid, the more fluid the membrane
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B) The more unsaturated the fatty acid tails of the phospholipid, the more fluid the membrane
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C) The higher the temperature, the less fluid the membrane
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D) The lower the temperature, the more fluid the membrane
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Farmers in a fruit orchard have to pick fruits for a long time span due to uneven senescence which increases cost of production. In order to pick all fruits at one time i.e. at the end of the season, the farmers should spray

AKU Practice Mock 3
Biology
A) Abscisic acid
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B) Gibberellins
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C) Ethane
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D) Auxins
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Ectoderm, mesoderm and endoderm are the three germ layers. Which layer among the three gives rise to muscle cells and connective tissue in the body?

AKU Practice Mock 3
Biology
A) Ectoderm
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B) Endoderm
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C) Mesoderm
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D) None of the above
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Which of the statements about Protoctista are correct?
I. A eukaryote that is not a fungus, plant or animal is a protoctist.
II. An organism with cellulose cell walls and chloroplasts may be a protoctist.
III. An organism existing as a group of similar cells may be a protoctist.
IV. A single-celled heterotrophic eukaryote is a protoctist

AKU Practice Mock 3
Biology
A) I, II, III and IV
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B) I, II and IV
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C) II and III
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D) III and IV only
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Bacteria were cultured in a medium containing heavy nitrogen (15N) until the entire DNA was labelled. These bacteria were then grown in a medium containing only normal nitrogen (14N) for five generations. The percentage of cells containing 15N in each generation was estimated. Which curve provides evidence that DNA replication is semi-conservative?

AKU Practice Mock 3
Biology
A) A
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B) B
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C) C
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D) D
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The given diagram shows the life cycle of a plant.

The feature in the given life cycle due to which this plant is classified as a tracheophyte is the presence of

AKU Practice Mock 3
Biology
A) Haploid spores
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B) Dominant sporophyte
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C) Independent gametophyte
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D) Antheridium and archegonium
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The function of ATP in voluntary muscle movement is to supply the energy for

AKU Practice Mock 3
Biology
A) Myosin to bind to actin
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B) Myosin to become separated from actin
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C) Tropomyosin to bind to troponin
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D) Tropomyosin to become separated from troponin
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Ahmed is 4 years older than Salal, who is 3 times as old as Saalaar.
If the sum of their ages is 25 years, how old is Salal?

AKU Practice Mock 3
Mathematics Reasoning
A) 3 years
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B) 9 years
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C) 12 years
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D) 18 years
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Some of the digits in the following correct addition have been replaced by the letters ?, ?, ? and ?, as shown. How much is ? + ? + ? + ??

AKU Practice Mock 3
Mathematics Reasoning
A) 14
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B) 15
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C) 16
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D) 17
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Quratulain plays basketball. Of her first 20 throws, 55% are successful. After five more throws, her success rate increases to 56%. How many of her last five throws were successful?

AKU Practice Mock 3
Mathematics Reasoning
A) 1
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B) 2
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C) 3
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D) 4
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A bus leaves the station, travelling at a constant speed of 45 miles per hour. A second bus leaves the same station, heading in the same direction, 1 hour later travelling at a constant speed of 50 miles per hour.
Quantity X = 8 hours.
Quantity Y = the number of hours after the first bus left that the busses will pass each other.

Compare Quantity X and Quanity Y

AKU Practice Mock 3
Mathematics Reasoning
A) Quantity X is greater than Quantity Y
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B) Quantity Y is greater than Quantity X
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C) Quantities X and Y are equal
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D) The relationship cannot be determined from the information given
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Five friends bake ginger bread and subsequently meet up for a tasting session. Each one gives one of his ginger breads to each other person. Then each person eats all of the ginger bread they were given. After that the number of ginger breads halves.
Quantity X = the number of ginger breads the five friends had to begin with.
Quantity Y = 60

Compare Quantity X and Quanity Y

AKU Practice Mock 3
Mathematics Reasoning
A) Quantity X is greater than Quantity Y
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B) Quantity Y is greater than Quantity X
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C) Quantities X and Y are equal
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D) The relationship cannot be determined from the information given
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Carpet tiles are more expensive to fit around the edge of a room than when they are not touching the edge. The prices per tile (for the tile as well as its fitting) are:
Rs.800 for a tile immediately adjacent to a wall;
Rs.500 for a tile that is not immediately adjacent to a wall.
In the following plan drawings of four rooms, each tile is shown by a square.

Which of these rooms is the cheapest to tile?

AKU Practice Mock 3
Mathematics Reasoning
A) Room W
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B) Room X
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C) Room Y
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D) Room Z
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The size of a wooden block is 5 x 10 x 20 cm3. How many whole such blocks will you need to construct a solid wooden cube of minimum size?

AKU Practice Mock 3
Mathematics Reasoning
A) 6
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B) 8
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C) 12
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D) 16
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Of the three numbers, second is twice the first and is also thrice the third. If the average of the three numbers is 44, what is the largest number?

AKU Practice Mock 3
Mathematics Reasoning
A) 24
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B) 48
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C) 72
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D) 96
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Romesa wants to arrange the alphabets in ‘AGA KHAN’ in as many ways as she possibly can. In how many ways can she do this?

AKU Practice Mock 3
Mathematics Reasoning
A) 6
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B) 840
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C) 1090
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D) 5040
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A small pipe takes 24 minutes longer to fill a tank than it takes a large pipe. The two pipes together can fill the tank in 9 minutes. How long does it take the small pipe alone to fill the tank?

AKU Practice Mock 3
Mathematics Reasoning
A) 12 minutes
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B) 18 minutes
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C) 24 minutes
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D) 36 minutes
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Sana draws some congruent rectangles and one triangle. She then shades in grey those parts of the rectangles that lie outside the triangle.

How big is the resulting grey area?

AKU Practice Mock 3
Mathematics Reasoning
A) 10 cm2
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B) 12 cm2
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C) 14 cm2
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D) 15 cm2
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An employee at a general store wants to know the number of people standing in the queue at the counter. Which two of the following statements together provide sufficient information to answer the question?
I. If four more people join the queue, the number of people in the queue will be more than 15.
II. More than 10 people are standing in the queue.
III. There are more men than women in the queue.
IV. If three people give up and leave the queue, the number remaining will be less than 10.
V. Less than 20 people are standing in the queue

AKU Practice Mock 3
Mathematics Reasoning
A) I and IV
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B) II and IV
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C) III and V
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D) I and III
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Aliza folds a square piece of paper twice and subsequently cuts it along the two lines as shown in the picture.

The resulting pieces of paper are then unfolded if possible.
Quantity X = the number of the pieces of paper which are squares.
Quantity Y = 5.

Compare Quantity X and Quantity Y

AKU Practice Mock 3
Mathematics Reasoning
A) Quantity X is greater than Quantity Y
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B) Quantity Y is greater than Quantity X
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C) Quantities X and Y are equal
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D) The relationship cannot be determined from the information given
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A cube with side length 6 is shown in the figure below.

If point Q lies on square ABCD and is equidistant from points A, B, C, and D, what is the volume of pyramid EFGHQ? (Vpyramid = LWH/3)

AKU Practice Mock 3
Mathematics Reasoning
A) 18
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B) 36
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C) 72
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D) 144
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Eisha is making punch for a winter party in a punch bowl that can hold at most 9 quarts. She wants to get as much vitamin C in her punch as possible, so she is using only orange juice and grape juice. She has 6 quarts of orange juice, which has 2 grams of vitamin C per quart, and 7 quarts of grape juice, which has 1 gram of vitamin C per quart.
If there are 4 cups in a quart, what is the greatest possible amount of vitamin C, in grams, that Eisha can have in one cup of her punch?

AKU Practice Mock 3
Mathematics Reasoning
A) 5/12
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B) 7/12
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C) 1/4
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D) 3/4
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Twelve contestants are taking part in a series of challenges.

Today’s challenge was an obstacle course, which they completed against the clock. The contestant who completed the course in the shortest time was awarded 5 points, the contestant with the second-best time was awarded 2 points, and contestants whose times were within 90 seconds of the second-best time were awarded 1 point each. The order in which the contestants competed and their times (min : sec) are shown below.

How many of the contestants scored points in today’s challenge?

AKU Practice Mock 3
Mathematics Reasoning
A) 3
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B) 5
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C) 7
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D) 9
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The non-zero numbers P and Q are such that P + Q = 3(P – Q).
Quantity X = the value of PQ/(P2 + Q2).
Quantity Y = 2/5

Compare Quantity X and Quanity Y

AKU Practice Mock 3
Mathematics Reasoning
A) Quantity X is greater than Quantity Y
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B) Quantity Y is greater than Quantity X
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C) Quantities X and Y are equal
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D) The relationship cannot be determined from the information given
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A bag contains 6 blue marbles and 4 red marbles. Two marbles are selected at random, one after the other (the first marble is not replaced in the bag after it is taken out). What is the probability of drawing one red marble and one blue marble irrespective of the order?

AKU Practice Mock 3
Mathematics Reasoning
A) 3/5
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B) 2/15
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C) 8/15
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D) 4/15
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The baseball diamond is really a square. The distance between each of the bases is 90 feet as shown below. How far approximately does the catcher have to throw the ball to get from home plate to second base?

AKU Practice Mock 3
Mathematics Reasoning
A) 90 feet
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B) 100 feet
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C) 127 feet
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D) 156 feet
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In triangle XYZ, the angle Z is six times as large as angle X. The measure of angle Y is 52o greater than that of angle X. What is the measure of the angle Z?

AKU Practice Mock 3
Mathematics Reasoning
A) 16o
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B) 32o
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C) 68o
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D) 96o
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Below are three views of the same object.

Which of the following is another view of the object?

AKU Practice Mock 3
Science Reasoning
A) A
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B) B
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C) C
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D) D
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The results of the 2 experiments support the conclusion that, for a given brand of tape, as the tape’s width increases, the force required to remove the tape from a given wrapping:

AKU Practice Mock 3
Science Reasoning
A) Increases only
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B) Decreases only
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C) Remains constant
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D) Varies, but with no particular trend
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What could be the identity of unknown metal #1 and #2?

AKU Practice Mock 3
Science Reasoning
A) A
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B) B
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C) C
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D) D
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When the crane driver finishes for the day, he/she will ensure that

AKU Practice Mock 3
Science Reasoning
A) The counterbalance is adjacent to the cab
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B) The counterbalance is at a distance from the cab that compensates for the weight of the jib
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C) The counterbalance is removed from the jib
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D) A temporary load is hoisted to compensate to compensate for the counterbalance
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An investigator went to Central America to study oropendulas, which are communal nesting birds. Another species of bird, the cowbird, sometimes lay its eggs in the nests of oropendulas. Some of the populations of oropendulas throw the cowbird eggs out of the nest, and some don’t. The investigator was interested in finding out why some birds would raise other species as their own but others would toss them out. By watching the nests closely, he found that blowflies lay their eggs in the nests of oropendulas, and that the young larvae, maggots, feed on the young birds. If young cowbirds are in the nest, the precocious cowbirds eat the blowfly larvae, protecting the young oropendulas. In colonies of oropendulas that discriminate against cowbirds, throwing them from the nest, the blowflies are not eaten by cowbirds. These colonies of oropendulas build their nests close to a particular wasp colony, and the wasps eat the blowflies.

Which of the following rows is correct?

AKU Practice Mock 3
Science Reasoning
A) A
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B) B
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C) C
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D) D
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For the students to determine the force required to remove tape from a wrapping, which of the following attractive forces had to exceed the adhesive force between the tape and the wrapping?

AKU Practice Mock 3
Science Reasoning
A) The force between the clamp and the tape
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B) The force between the clamp and the paper or plastic wrapping
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C) The force between the Earth and the wrapping
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D) The force between the Earth and the tape
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Given this information in the text of Figure 1, the total amount of time needed to build the crane is approximately

AKU Practice Mock 3
Science Reasoning
A) One week
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B) Ten days
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C) Two weeks
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D) A calendar month
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When in use and ignoring the weight of the jib, a weight of 60 000 N at a distance of 6m from the vertical axis would need a counterbalance at 4 m from the vertical axis of

AKU Practice Mock 3
Science Reasoning
A) 9000 N
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B) 40 000 N
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C) 80 000 N
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D) 90 000 N
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Mughees colors in each of the eight circles in one of the colors red, yellow or blue. Two circles that are directly connected by a line are not allowed to be of the same color. Which two circles does Mughees definitely have to color in the same color?

AKU Practice Mock 3
Science Reasoning
A) 5 and 8
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B) 1 and 6
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C) 2 and 7
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D) 4 and 5
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Harris finishes a race in front of Malik. Samad finishes the race after Faiz, Malik in front of Faiz and Jibran in front of Samad. Who finishes the race last?

AKU Practice Mock 3
Science Reasoning
A) Samad
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B) Malik
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C) Harris
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D) Jibran
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Which of the following correctly identifies gas X and Y?

AKU Practice Mock 3
Science Reasoning
A) A
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B) B
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C) C
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D) D
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Which two suspects, while not guilty, could possibly be identical twins?

AKU Practice Mock 3
Science Reasoning
A) A and B
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B) A and C
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C) B and C
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D) B and D
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There are many clamps which tighten with a screw action, but to work on similar objects repetitively, it is much easier to use a ‘quick action clamp’. These may use a cam, as in the example shown below.

If the cam handle on the right is moved down and to the right (in the direction of the arrow),

AKU Practice Mock 3
Science Reasoning
A) The height of the pivot decreases and the clamp grips the object
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B) The height of the pivot decreases and the clamp releases the object
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C) The height of the pivot increases and the clamp grips the object
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D) The height of the pivot increases and the clamp releases the object
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Based on the average results of Experiments 1 and 2, which of the following brands of tape adhered better to the paper than to the plastic?

AKU Practice Mock 3
Science Reasoning
A) Brand X
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B) Brand Y
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C) Brands X and Y
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D) Brands Y and Z
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What is the minimum number of points which have to be removed from the picture given below so that in the remaining picture no three points lie in one line?

AKU Practice Mock 3
Science Reasoning
A) 1
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B) 2
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C) 3
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D) 4
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The students’ instructor gave them a strip of tape that was 2.5 cm wide and asked them to identify the brand. The students repeated the procedures from Experiments 1 and 2 using the tape and obtained average forces of 4.9 N for paper and 4.1 N for plastic. Which of the following brands would most likely have produced these results?

AKU Practice Mock 3
Science Reasoning
A) Brand X only
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B) Brand Y only
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C) Brands X and Y only
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D) Brands Y and Z only
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In the diagram below, a 2 x 2 x 2 cube is made up of four transparent 1 x 1 x 1 cubes and four non-transparent black 1 x 1 x 1 cubes. They are placed in a way so that the entire big cube is nontransparent; i.e. looking at it from the front to the back, the right to the left, the top to the bottom, at no point you can look through the cube.

What is the minimum number of black 1 x 1 x 1 cubes needed to make a 3 x 3 x 3 cube nonetransparent in the same way?

AKU Practice Mock 3
Science Reasoning
A) 6
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B) 9
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C) 10
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D) 12
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Jamshed reads a book whose pages are all numbered. The digit 0 appears five times and the digit 8 six times. What is the page number of the last page?

AKU Practice Mock 3
Science Reasoning
A) 48
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B) 58
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C) 60
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D) 68
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If this gel were used in a court case as DNA evidence taken from the crime scene, which of the following suspects appears to be guilty?

AKU Practice Mock 3
Science Reasoning
A) Suspect A
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B) Suspect B
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C) Suspect C
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D) Suspect D
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If methylene blue dye is added to a suspension of yeast cells, living cells do not take up the stain, and they remain colorless. However, dead cells are stained blue. This fact was used to carry out an investigation into the rate at which yeast cells were killed at two different temperatures (at high temperatures the yeast enzymes will be denatured). The results are shown in the diagram below.

AKU Practice Mock 3
Science Reasoning
A) A
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B) B
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C) C
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D) D
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The oxidative cleavage of the given diol produces

AKU Practice Mock 3
Chemistry
A) 2 molecules of ketone
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B) 2 molecules of aldehyde
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C) 1 molecule of ketone and 1 molecule of ester
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D) 1 molecule of aldehyde and 1 molecule of ester
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Which isomer of C4H10O forms three alkenes on dehydration?

AKU Practice Mock 3
Chemistry
A) butan-1-ol
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B) butan-2-ol
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C) 2-methylpropan-1-ol
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D) 2-methylpropan-2-ol
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Which of the following substituents is NOT an ortho, para director in an electrophilic aromatic substitution reaction?

AKU Practice Mock 3
Chemistry
A) A
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B) B
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C) C
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D) D
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The gas in a large cylinder is at a pressure of 3040 torr. Assuming constant temperature and ideal gas behavior, how much of this gas could you compress into a 100 dm3 box at 8 atm?

AKU Practice Mock 3
Chemistry
A) 20 dm3
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B) 200 dm3
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C) 5,000 dm3
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D) 50,000 dm3
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Enough Na2SO4 is dissolved in water at 40°C to saturate the solution. When this occurs heat is given off. All of the following statements are true EXCEPT

AKU Practice Mock 3
Chemistry
A) The boiling point of the solution is higher than that of pure water
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B) The freezing point of the solution is lower than that of pure water
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C) If the temperature of the water is lowered, then the solubility of Na2SO4 decreases
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D) If the temperature of the water is raised, then the solubility of Na2SO4 decreases
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In the ammonolysis of alkyl halides the halogen atom is replaced by an amino (–NH2) group. Which of the following represents the correct order of reactivity of halides with amines?

AKU Practice Mock 3
Chemistry
A) RBr > RI > RCl.
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B) RI > RCl > RBr
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C) RI > RBr > RCl
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D) RCl > RBr > RI
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Which structural formulae represent 2,2-dimethylpentane?
I. (CH3)2CHCH2CH(CH3)2
II. (CH3)3CCH2CH2CH3
III. CH3CH2CH2C(CH3)3

AKU Practice Mock 3
Chemistry
A) I, II and III
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B) I and II only
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C) II and III only
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D) I only
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Which compound exhibits both geometrical and optical isomerism?

AKU Practice Mock 3
Chemistry
A) CH3CH=CHCH2CH3
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B) CH3CHBrCH=CH2
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C) CH3CBr=CBrCH3
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D) CH3CH2CHBrCH=CHBr
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A flame test of a particular element gives a persistent yellow color. This element is most likely which of the following?

AKU Practice Mock 3
Chemistry
A) Copper
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B) Sodium
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C) Strontium
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D) Barium
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Of the following fatty acids, which of the following has the lowest melting point?

AKU Practice Mock 3
Chemistry
A) A
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B) B
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C) C
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D) D
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Equimolar amounts of hydrogen and oxygen gas, at the same temperature, are released into a large container. The ratio of the rate of diffusion of the hydrogen molecules to that of the molecules of oxygen would be

AKU Practice Mock 3
Chemistry
A) 256:1
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B) 1:16
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C) 4:1
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D) 1:4
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The Ksp of Mg(OH)2 in water is 1.2 x 10-11. If the Mg2+ concentration in an acid solution is 1.2 x 10-5 mol/dm3, what is the pH at which Mg(OH)2 just begins to precipitate?

AKU Practice Mock 3
Chemistry
A) 3
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B) 4
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C) 11
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D) 12
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A common industrial solvent is a mixture of acetone and acetic acid. Which of the following reagents would have no effect on this solvent?

AKU Practice Mock 3
Chemistry
A) Alkaline aqueous iodine
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B) Sodium borohydride
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C) Calcium carbonate
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D) Aqueous bromine
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After balancing the equation below, the ratio of BrO3- to Br- is __BrO3-(aq) + __Br-(aq) + __H+(aq) ———–> __Br2 (l) + __H2O

AKU Practice Mock 3
Chemistry
A) 1:5
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B) 1:3
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C) 1:2
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D) 2:3
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In which of the following are the molecules shown below listed in order of increasing reactivity toward electrophilic aromatic substitution?

AKU Practice Mock 3
Chemistry
A) 2 < 4 < 1 < 3 Show Explanation B) 3 < 2 < 4 < 1 Show Explanation C) 3 < 4 < 2 < 1 Show Explanation D) 4 < 3 < 1 < 2 Show Explanation

The reaction sequence shown below can be used to prepare benzocaine from 4-nitrotoluene

Which of the following reaction sequences would accomplish this synthesis?

AKU Practice Mock 3
Chemistry
A) 1. Na2Cr2O7, H2SO4.
2. CH3CH2OH, H+
3. Sn, HCl followed by NaOH
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B) 1. NaBH4, CH3OH.
2. CH3CH2OH, H+
3. Sn, HCl followed by NaOH.
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C) 1. Na2Cr2O7, H2SO4.
2. CH3CH2ONa.
3. NaBH4, CH3OH.
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D) 1. Na2Cr2O7, H2SO4.
2. CH3CH2OH, H+
3. H2O, HCl
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