If both NaOH and KOH were the same price per kilogram, it would be cheaper to use NaOH to neutralize a quantity of acid because NaOH

AKU Practice Mock 2
Chemistry
A) Weighs less per mole than KOH.
Show Explanation
B) Weighs more per mole than KOH.
Show Explanation
C) Neutralizes more acid per mole than KOH.
Show Explanation
D) Is less dense than KOH.
Show Explanation

Which of the following shows the correct set of quantum numbers for an unpaired electron present in the valence shell of 19F9?

AKU Practice Mock 2
Chemistry
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

Which of the following shows the correct set of quantum numbers for an unpaired electron present in the valence shell of 19F9?

AKU Practice Mock 2
Chemistry
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

At 0oC and 1.0 atm, the density of ethene gas is approximately

AKU Practice Mock 2
Chemistry
A) 0.80 g/dm3.
Show Explanation
B) 1.0 g/dm3.
Show Explanation
C) 1.3 g/dm3.
Show Explanation
D) 2.5 g/dm3.
Show Explanation

Which of the following is a major product of the reaction shown below?

AKU Practice Mock 2
Chemistry
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

The primary intermolecular interaction that makes it possible to liquefy hydrogen gas is called

AKU Practice Mock 2
Chemistry
A) London dispersion forces.
Show Explanation
B) Hydrogen bonding.
Show Explanation
C) Covalent bonding.
Show Explanation
D) Dipole-dipole attraction.
Show Explanation

Consider the following reaction sequence.

CH2=CH2 + cold dilute KMnO4 → A.

A + excess PCl5 → B.

The products A and B respectively are

AKU Practice Mock 2
Chemistry
A) CH2OHCH2OH and CH2ClCH2Cl.
Show Explanation
B) CH2OHCH2OH and CH2OHCH2Cl.
Show Explanation
C) CH3CH2OH and CH3CHCl.
Show Explanation
D) CH3CHO and CH3CH2Cl.
Show Explanation

Which of the following options represents the major product of the following reaction?

AKU Practice Mock 2
Chemistry
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

In a set of reactions, acetic acid yields a product R.

CH3COOH + SOCl2 in pyridine → P.

P + C6H6 + anhydrous AlCl3 → Q.

Q + HCN → R.

The compound R would be

AKU Practice Mock 2
Chemistry
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

The molarity of solution X is to be determined by a titration procedure. To carry out this procedure, all of the following must be known EXCEPT the

AKU Practice Mock 2
Chemistry
A) Equation for the chemical reaction that occurs during the titration.
Show Explanation
B) Volume of solution X that is used.
Show Explanation
C) Volume and molarity of the solution that reacts with X.
Show Explanation
D) Mass of solution X that is used.
Show Explanation

1-chloro-2-methylbutane reacts with sodium cyanide in ethanol in a nucleophilic substitution reaction.

What is the most likely intermediate or transition state in this reaction?

AKU Practice Mock 2
Chemistry
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

Which of the following statements is true concerning a saturated solution of a salt at a constant temperature?

AKU Practice Mock 2
Chemistry
A) At the same temperature, a saturated solution of any other salt has the same concentration.
Show Explanation
B) The solution is unstable and sudden crystallization could occur.
Show Explanation
C) Addition of solid salt shifts the equilibrium, which results in an increase in the amount of dissolved salt.
Show Explanation
D) The amount of dissolved salt is constant.
Show Explanation

Which statement about compound T and compound U is correct?

AKU Practice Mock 2
Chemistry
A) T and U are stereoisomers
Show Explanation
B) T can be distinguished from U by the use of alkaline aqueous iodine.
Show Explanation
C) T can be reduced by LiAlH4 but not by NaBH4.
Show Explanation
D) U can be formed by the oxidation of 3-methylbutan-1-ol.
Show Explanation

Consider the following reaction at 250C, (CH3)3COH + HCl (CH3)3CCl + H2O. The experimentally determined rate law for this reaction indicates that the reaction is first order with respect to (CH3)3COH and that the reaction is pseudo-first order overall.

Which of the following would produce an increase in the rate of this reaction?

AKU Practice Mock 2
Chemistry
A) Increasing the concentration of (CH3)3COH.
Show Explanation
B) Increasing the concentration of HCl.
Show Explanation
C) Decreasing the concentration of (CH3)3CCl.
Show Explanation
D) It is impossible to tell.
Show Explanation

m-Chlorobenzaldehyde on reaction with concentrated KOH at room temperature gives:

AKU Practice Mock 2
Chemistry
A) m-Hydroxybenzaldehyde and m-chlorobenzyl alcohol
Show Explanation
B) m-Chlorobenzyl alcohol and m-hydroxybenzyl alcohol
Show Explanation
C) Potassium m-chlorobenzoate and m-hydroxy benzaldehyde
Show Explanation
D) Potassium m-chlorobenzoate and m-chlorobenzyl alcohol
Show Explanation

The structure of acetone is shown below.

Three statements are made about acetone.

I. It reacts with dilute nitric acid to give formic acid and acetic acid.

II. It gives a yellow precipitate during tri-iodomethane test.

III. It reacts with H2NOH to give (CH3)2C=NOH in the presence of a base.

Which of the statements is/are correct?

AKU Practice Mock 2
Chemistry
A) I, II and III.
Show Explanation
B) I and II only.
Show Explanation
C) II and III only.
Show Explanation
D) II only.
Show Explanation

When the equation shown below is balanced which of the following is true?

__MnO4- + __I- + __H+ ↔ __Mn2+ + __IO3- + __H2O

AKU Practice Mock 2
Chemistry
A) The I- : IO3- ratio is 3:1
Show Explanation
B) The MnO4- : I- ratio is 6:5
Show Explanation
C) The MnO4- : Mn2+ ratio is 3:1
Show Explanation
D) The H+ : I- ratio is 2:1
Show Explanation

Which of the following shows the CORRECT change in the value of enthalpy for the given reactions?

I. HCl + NaOH → NaCl + H2O.

II. H2SO4 + NaOH → NaHSO4 + H2O.

III. HNO3 + NaOH → NaNO3 + H2O.

AKU Practice Mock 2
Chemistry
A) Same for all reactions.
Show Explanation
B) Larger for reaction I.
Show Explanation
C) Larger for reaction II.
Show Explanation
D) Larger for reaction III.
Show Explanation

Which of the following nitrogenous compounds is the strongest Lewis base in an aqueous medium?

AKU Practice Mock 2
Chemistry
A) NH3.
Show Explanation
B) H3CNH2.
Show Explanation
C) (H3C)2NH.
Show Explanation
D) HCONH2.
Show Explanation

Which of the following properties generally decreases moving from left to right across a period of the periodic table?

AKU Practice Mock 2
Chemistry
A) Reactivity
Show Explanation
B) Atomic Radius
Show Explanation
C) Electronegativity
Show Explanation
D) First Ionization Energy
Show Explanation

Which of the following procedures gives the compound shown below?

AKU Practice Mock 2
Chemistry
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

A school has 378 girl students and 675 boy students. The school is divided into only boys or only girls sections. All sections in the school have the same number of students. Given this information, what is the total number of sections in the school?

AKU Practice Mock 2
Mathematics Reasoning
A) 35.
Show Explanation
B) 38.
Show Explanation
C) 39
Show Explanation
D) 40
Show Explanation

An employee wishes to know the total number of female employees in the accounting department. Which two of the following statements together provide sufficient information to answer the question?

I. There are more women than men.

II. If 4 women are hired, the number of women in the department will become greater than 20.

III. If 5 men resign, the office will have 22 employees.

IV. There are more than 26 employees at the department.

V. There are 7 more women than men.

AKU Practice Mock 2
Mathematics Reasoning
A) I and IV.
Show Explanation
B) II and IV.
Show Explanation
C) III and V.
Show Explanation
D) I and III.
Show Explanation

Wajid is measuring how many solutions from Batch X and Batch Y are acidic.

He measured a total of 100 solutions from both batches. 40% of the solutions from Batch X and 70% of the solutions from Batch Y were acidic, for a total of 48 acidic solutions.

Solving which of the following systems of equations yields the number of solutions in Batch X and Batch Y?

AKU Practice Mock 2
Mathematics Reasoning
A) X + Y = 100.
0.4X + 0.7Y = 48.

Show Explanation
B) X + Y = 48.
0.4X + 0.7Y = 100.

Show Explanation
C) X + Y = 200.
0.4X + 0.7Y = 48.

Show Explanation
D) X + Y = 100.
40X + 70Y = 48.

Show Explanation

Three four-digit numbers are written onto three separate pieces of paper as shown. The sum of the three numbers is 10126. Three of the digits in the picture are hidden.

Which are the hidden digits?

AKU Practice Mock 2
Mathematics Reasoning
A) 5, 6 and 7.
Show Explanation
B) 4, 5 and 7.
Show Explanation
C) 4, 6 and 7.
Show Explanation
D) 4, 5 and 6.
Show Explanation

A lift can carry either 12 adults or 20 children.

Quantity X = the maximum number of children that could travel in the lift with 9 adults.

Quantity Y = 5.

AKU Practice Mock 2
Mathematics Reasoning
A) Quantity X is greater than Quantity Y.
Show Explanation
B) Quantity Y is greater than Quantity X.
Show Explanation
C) Quantities X and Y are equal.
Show Explanation
D) The relationship cannot be determined from the information given.
Show Explanation

Two oranges, three bananas and four pineapples cost Rs.15. Three oranges, two bananas and one pineapple cost Rs.10. What is the cost of three oranges, three bananas and three pineapples?

AKU Practice Mock 2
Mathematics Reasoning
A) Rs.15.
Show Explanation
B) Rs.20.
Show Explanation
C) Rs.25.
Show Explanation
D) Rs.30.
Show Explanation

A drama club collected Rs.5445 from the sale of tickets. An adult ticket and a student ticket cost Rs.30 and Rs.15 respectively. They sold 63 more student tickets than adult tickets.

Quantity X = the number of student tickets.

Quantity Y = 163.

AKU Practice Mock 2
Mathematics Reasoning
A) Quantity X is greater than Quantity Y.
Show Explanation
B) Quantity X is greater than Quantity Y.
Show Explanation
C) Quantities X and Y are equal.
Show Explanation
D) The relationship cannot be determined from the information given.
Show Explanation

Anam distributes some apples equally into six baskets. Safa distributes the same amount of apples equally into five baskets. Safa realizes that each of her baskets contains two more apples than Anam‘s basket.

How many apples did Anam distribute?

AKU Practice Mock 2
Mathematics Reasoning
A) 60
Show Explanation
B) 65
Show Explanation
C) 75
Show Explanation
D) 90
Show Explanation

If every 2 out of 3 readymade shirts need alterations in the collar, every 3 out of 4 need alterations in the sleeves, and every 4 out of 5 need it in the body, how many alterations will be required for 60 shirts?

AKU Practice Mock 2
Mathematics Reasoning
A) 24.
Show Explanation
B) 123.
Show Explanation
C) 133.
Show Explanation
D) 143.
Show Explanation

Over a period of time Awais finds that on long-distance flights he flies economy class on 80% of flights. On the rest of the flights he flies first class.

When he flies economy class, the probability that he gets a good night’s sleep is x. When he flies first class, the probability that he gets a good night’s sleep is 0.9.

The probability that Awais gets a good night’s sleep on a randomly chosen flight is 0.3.

What is the value of x?

AKU Practice Mock 2
Mathematics Reasoning
A) 0.15.
Show Explanation
B) 0.30.
Show Explanation
C) 0.55.
Show Explanation
D) 0.75.
Show Explanation

Three classes in a school all took the same test.

Class 1 achieved a mean score of 61, Class 2 achieved a mean score of 63, and class 3 achieved a mean score of 70. The mean score of the students for all three classes combined was 65. Class 1 contains twice as many students as Class 2.

Which one of the following statements about the number of students in class 3 is true?

AKU Practice Mock 2
Mathematics Reasoning
A) Class 3 contains fewer students than Class 2.
Show Explanation
B) Class 3 contains the same number of students as Class 2.
Show Explanation
C) Class 3 contains more students than Class 2, but fewer than Class 1.
Show Explanation
D) Class 3 contains the same number of students as Class 1.
Show Explanation

Hashim is three times as old as his son, Junaid. After ten years, the sum of their ages will be 76 years. The present ages of Hashim and Junaid are

AKU Practice Mock 2
Mathematics Reasoning
A) 36 and 12 respectively.
Show Explanation
B) 42 and 14 respectively.
Show Explanation
C) 48 and 16 respectively.
Show Explanation
D) 54 and 18 respectively.
Show Explanation

The difference between two whole numbers is 66 and one number is four times the other number. If 10 is added to both the numbers, the ratio of the smaller number to the larger number will be

AKU Practice Mock 2
Mathematics Reasoning
A) 7:19.
Show Explanation
B) 14:39.
Show Explanation
C) 15:32.
Show Explanation
D) 16:49.
Show Explanation

What is the highest common factor of 360, 500 and 700, given as the product of powers of its prime factors?

AKU Practice Mock 2
Mathematics Reasoning
A) 2 x 5.
Show Explanation
B) 22 x 52.
Show Explanation
C) 22 x 3 x 5 x 7.
Show Explanation
D) 22 x 5.
Show Explanation

How many four-sided shapes does this diagram have?

AKU Practice Mock 2
Mathematics Reasoning
A) 11-15.
Show Explanation
B) 16-20.
Show Explanation
C) 21-25.
Show Explanation
D) 26-30.
Show Explanation

Dua’s five favorite puzzle books, A, B, C, D, and E, are displayed between two book ends. She decides to arrange them in every possible way, but she can only move one book every minute.

Quantity X is the amount of time it takes her to arrange the books.

Quantity Y = the amount of time it would have taken her to arrange the books if there were a sixth puzzle book and A and F were to be next to each other.

AKU Practice Mock 2
Mathematics Reasoning
A) Quantity X is greater than Quantity Y.
Show Explanation
B) Quantity Y is greater than Quantity X.
Show Explanation
C) Quantities X and Y are equal
Show Explanation
D) The relationship cannot be determined from the information given.
Show Explanation

In a 100 m race, A can beat B by 25 m, and B can beat C by 4 m. In the same race, A can beat C by

AKU Practice Mock 2
Mathematics Reasoning
A) 21 m.
Show Explanation
B) 26 m.
Show Explanation
C) 28 m.
Show Explanation
D) 29 m.
Show Explanation

On Children’s Day, sweets were to be equally distributed among 175 children in a school. However, 35 children were absent and therefore, each child got 4 sweets extra.

Quantity X = the total number of sweets that were available for distribution.

Quantity Y = 2680.

AKU Practice Mock 2
Mathematics Reasoning
A) Quantity X is greater than Quantity Y.
Show Explanation
B) Quantity Y is greater than Quantity X.
Show Explanation
C) Quantities X and Y are equal.
Show Explanation
D) The relationship cannot be determined from the information given.
Show Explanation

Which of the following represents the solution set to the inequality 2x + 1 ≥ 9?

AKU Practice Mock 2
Mathematics Reasoning
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

In a survey of 100 students, 30 were studying Physics, 30 were studying Chemistry and 40 were studying Biology, but 6 were studying all the three subjects, while 11 studying Physics and Chemistry, 10 studying Chemistry and Biology and 12 studying Physics and Biology.

How many of them were non-science students?

AKU Practice Mock 2
Mathematics Reasoning
A) 17
Show Explanation
B) 22
Show Explanation
C) 27
Show Explanation
D) 32
Show Explanation

If a particle of mass M is tied to a light, inextensible string fixed at point P and particle is projected at point A with velocity VA = (4gL)1/2 as shown. What is the tension in the string at B? (Assume particle is projected in the vertical plane.)

AKU Practice Mock 2
Physics
A) Mg
Show Explanation
B) 2 Mg
Show Explanation
C) 3 Mg
Show Explanation
D) 7 Mg
Show Explanation

A toy car with charge q moves on a frictionless horizontal plane surface under the influence of a uniform electric field E. Due to the force qE, its velocity increases from 0 to 6 m/s on one-second duration. At that instant, the direction of the field is reversed. The car continues to move for two more seconds under the influence of this field. The average velocity and the average speed of the toy car between 0 to 3 seconds are respectively

AKU Practice Mock 2
Physics
A) 1.5 m/s and 3 m/s
Show Explanation
B) 1 m/s and 3.5 m/s
Show Explanation
C) 1 m/s and 3 m/s
Show Explanation
D) 2 m/s and 4 m/s
Show Explanation

A block is moving counter-clockwise in a circular path on a flat table.

If the speed of the block is increasing at the moment it is at the position shown, which arrow best illustrates the direction of the acceleration on the block?

AKU Practice Mock 2
Physics
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

The half-life of a radioactive material is 14.7 years. How long will it take for a sample of this material to decay to 2.50% of its initial amount?

AKU Practice Mock 2
Physics
A) 29.4 years.
Show Explanation
B) 58.8 years.
Show Explanation
C) 78.2 years.
Show Explanation
D) 147 years.
Show Explanation

A sample of an ideal gas is heated, doubling its absolute temperature.

Which of the following statements best describes the result of heating the gas?

AKU Practice Mock 2
Physics
A) The root-mean-square speed of the gas molecules doubles.
Show Explanation
B) The average kinetic energy of the gas molecules increases by a factor of 21/2.
Show Explanation
C) The average kinetic energy of the gas molecules increases by a factor of 4.
Show Explanation
D) The speeds of the gas molecules cover a wide range, but the root-mean-square speed increases by a factor of 21/2.
Show Explanation

A loop of metal wire containing a tiny light bulb is attached to an insulating handle and placed over a coil of wire in which a current can be established by a source of EMF and controlled by a variable resistor. The plane of the top loop is parallel to the plane of the bottom coil.

Which of the following could NOT cause the bulb to light?

AKU Practice Mock 2
Physics
A) Rotating the handle 90° while keeping the plane of the top loop parallel to the plane of the bottom coil
Show Explanation
B) Raising the handle up and away from the coil
Show Explanation
C) Lowering the handle down toward the coil
Show Explanation
D) Decreasing the resistance of the coil.
Show Explanation

Four point charges, two positive and two negative, are fixed in position at the corners of a square, as shown below.

AKU Practice Mock 2
Physics
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

How much work is done by the electric field created by the stationary charge +Q = +2.0 C to move a charge of +1.0 × 10–9 C from position X to position Z ?

AKU Practice Mock 2
Physics
A) 0 J.
Show Explanation
B) 150 J.
Show Explanation
C) 300 J.
Show Explanation
D) 1000 J.
Show Explanation

A particle moving with a uniform acceleration travels 24 m and 64 m in the first two constant intervals of 4 sec. Its initial velocity is

AKU Practice Mock 2
Physics
A) 1 m/s
Show Explanation
B) 2.5 m/s.
Show Explanation
C) 5 m/s.
Show Explanation
D) 10 m/s.
Show Explanation

The principle of complementarity states that phenomena can have properties that are contradictory. These contradictory properties can be observed separately, but not simultaneously. Which of the following pairs of phenomena are examples of complementarity?

AKU Practice Mock 2
Physics
A) Mass and weight.
Show Explanation
B) Heat and temperature.
Show Explanation
C) Light waves and particles.
Show Explanation
D) Magnetic and electric fields.
Show Explanation

The wire of a heating element has resistance R. The wire breaks and is replaced by a different wire. Data for the original wire and for the replacement wire are shown in the table.

What is the resistance of the replacement wire?

AKU Practice Mock 2
Physics
A) R/4
Show Explanation
B) R/2
Show Explanation
C) R
Show Explanation
D) 2R
Show Explanation

Lead-199 has a half-life of 1.5 hours. If a researcher begins with 2 grams of lead-199, how much will remain after 6 hours?

AKU Practice Mock 2
Physics
A) 0.125 grams.
Show Explanation
B) 0.25 grams.
Show Explanation
C) 0.375 grams.
Show Explanation
D) 0.5 grams.
Show Explanation

In an experiment designed to study the photoelectric effect, it is observed that low intensity visible light of wavelength 550 nm produced no photoelectrons. Which of the following best describes what would occur if the intensity of this light were increased dramatically?

AKU Practice Mock 2
Physics
A) Almost immediately, photoelectrons would be produced with a kinetic energy equal to the energy of the incident photons minus the work function of the metal.
Show Explanation
B) After several seconds, necessary for the electrons to absorb sufficient energy from the incident energy, photoelectrons would be produced with a kinetic energy equal to the energy of the incident photons.
Show Explanation
C) After several seconds, necessary for the electrons to absorb sufficient energy from the incident energy, photoelectrons would be produced with a kinetic energy equal to the energy of the incident photons minus the work function of the metal.
Show Explanation
D) Nothing would happen.
Show Explanation

The schematic below shows how energy is transferred in a refrigeration system. Which statement explains why work is an input into this system?

AKU Practice Mock 2
Physics
A) Work is needed to move thermal energy against a temperature gradient.
Show Explanation
B) Work is needed to reduce the amount of thermal energy lost during transfer.
Show Explanation
C) Work uses energy from the cold reservoir to reduce the temperature of the system.
Show Explanation
D) Work adds heat to the system, causing the temperature of both reservoirs to increase.
Show Explanation

During each cycle, a heat engine with an efficiency of 25% takes in 800 J of energy. How much waste heat is expelled during each cycle?

AKU Practice Mock 2
Physics
A) 200 J.
Show Explanation
B) 300 J.
Show Explanation
C) 400 J.
Show Explanation
D) 600 J.
Show Explanation

Why do baseball catchers wear mitts rather than just using their bare hands to catch pitched baseballs?

AKU Practice Mock 2
Physics
A) The impulse delivered to the catcher’s hand is reduced due to the presence of the mitt.
Show Explanation
B) The force on the catcher’s hand is reduced because of the increased area provided by the mitt.
Show Explanation
C) The baseball’s change in momentum is reduced due to the presence of the mitt
Show Explanation
D) The force on the catcher’s hand is reduced because the mitt increases the time of impact.
Show Explanation

A lamp with a 10 W bulb is placed at one end of a meter stick. At the other end is placed a second lamp with a bulb of unknown wattage.

Assuming that the wattage rating for the power consumed is proportional to the bulb’s luminous intensity, if a screen placed 20 cm from the 10 W lamp is equally illuminated by both lamps, the unknown lamp is marked

AKU Practice Mock 2
Physics
A) 60 W.
Show Explanation
B) 80 W.
Show Explanation
C) 100 W.
Show Explanation
D) 160 W.
Show Explanation

A projectile is launched horizontally from the edge of a cliff 20 m high with an initial speed of 10 m/s.

What is the horizontal distance the projectile travels before striking the level ground below the cliff?

AKU Practice Mock 2
Physics
A) 5 m.
Show Explanation
B) 10 m.
Show Explanation
C) 20 m.
Show Explanation
D) 40 m.
Show Explanation

The equivalent capacitance of the circuit shown below is nearest to

AKU Practice Mock 2
Physics
A) 5/6 µF.
Show Explanation
B) 6/5 µF.
Show Explanation
C) 7 µF.
Show Explanation
D) 7.5 µF
Show Explanation

Two identical, human-looking robots are standing and facing forward in separate spaceships. Both ships are moving at 0.8 c but are travelling in the opposite directions, as shown below.

If a person on the spaceship with robot A could make measurements on both robots, which of the following would the person observe to be different?

AKU Practice Mock 2
Physics
A) The width of the robot’s shoulders
Show Explanation
B) The length of the robots’ feet from toe to heel
Show Explanation
C) The width of the robots’ faces
Show Explanation
D) The robots’ heights
Show Explanation

A lizard was placed in a chamber with a constant flow of air. The temperature of the chamber was varied between 25°C and 10 °C. Apart from temperature and time, all other variables were kept constant. The carbon dioxide concentrations in the air leaving the chamber are shown in the graph.

Which of the following statements is/are correct?

I. Between 25 °C and 10 °C the respiration rate of the lizard is inversely proportional to the environmental temperature.

II. The data demonstrates that the lizard is only respiring aerobically.

III. The carbon dioxide could be detected by passing the air leaving the chamber through limewater.

AKU Practice Mock 2
Science Reasoning
A) II and III only
Show Explanation
B) I only
Show Explanation
C) II only
Show Explanation
D) III only.
Show Explanation

Equal-sized potatoes were placed into test tubes containing equal volumes of different concentrations of sucrose solution and left for 30 minutes. All other variables were controlled.

After 30 minutes, the potato piece in one of the concentrations of sucrose solution had not changed in size.

What can be concluded from this result?

I. There is no net movement of water into or out of the potato.

II. The water potential of the potato is the same as the water potential of the sucrose solution.

III. The concentration of the sucrose solution in the potato is the same as the concentration of the sucrose solution.

AKU Practice Mock 2
Science Reasoning
A) I, II, and III.
Show Explanation
B) I and II only
Show Explanation
C) I and III only
Show Explanation
D) III only.
Show Explanation

Organic compounds are molecules that frequently contain carbon, hydrogen, and oxygen joined together by covalent bonds.

As the number of bonds to oxygen atoms increases in a carbon chain, the overall molecule is increasingly oxidized. For example, aldehydes are more oxidized than alcohols, which are more oxidized than alkanes as shown in Table 1.

The melting points and viscosities of these compounds are listed in Table 2 and Table 3 respectively.

Which organic compounds in Table 2 are solids at 215 K?

AKU Practice Mock 2
Science Reasoning
A) All alkanes, alcohols, and aldehydes with 5 carbons or fewer
Show Explanation
B) Alcohols and aldehydes with 6 or more carbons and octane
Show Explanation
C) The 4- and 5-carbon alcohols and aldehydes, and all alkanes with 7 or fewer carbons
Show Explanation
D) The 5-carbon pentane and pentanol compounds and the 4-carbon butane, butanol, and butanaldehyde
Show Explanation

Six persons Ali, Bilal, Omaima, Deewan, Eisha and Farah are sitting in two rows, three in each.

Eisha is not at the end of any row.

Deewan is second to the left of Farah.

Omaima (the neighbor of Eisha) is sitting diagonally opposite to Deewan.

Bilal is the neighbor of Farah.

Which of the following is one of the two rows?

AKU Practice Mock 2
Science Reasoning
A) Farah, Bilal and Omaima
Show Explanation
B) Farah, Bilal and Omaim
Show Explanation
C) Deewan, Bilal and Farah
Show Explanation
D) Ali, Eisha and Farah
Show Explanation

Organic compounds are molecules that frequently contain carbon, hydrogen, and oxygen joined together by covalent bonds.

As the number of bonds to oxygen atoms increases in a carbon chain, the overall molecule is increasingly oxidized. For example, aldehydes are more oxidized than alcohols, which are more oxidized than alkanes as shown in Table 1.

The melting points and viscosities of these compounds are listed in Table 2 and Table 3 respectively.

For each type of organic compound, what is the relationship between the length of the carbon chain to the melting point and viscosity? As the number of carbons in the chain increases, the melting point:

AKU Practice Mock 2
Science Reasoning
A) Decreases, and the viscosity decreases.
Show Explanation
B) increases, and the viscosity increases.
Show Explanation
C) Increases, but the viscosity decreases.
Show Explanation
D) Increases but the viscosity decreases.
Show Explanation

Six persons Ali, Bilal, Omaima, Deewan, Eisha and Farah are sitting in two rows, three in each.

Eisha is not at the end of any row.

Deewan is second to the left of Farah.

Omaima (the neighbor of Eisha) is sitting diagonally opposite to Deewan.

Bilal is the neighbor of Farah.

Which of the following are sitting diagonally opposite to each other?

AKU Practice Mock 2
Science Reasoning
A) Farah and Omaima
Show Explanation
B) Ali and Omaima
Show Explanation
C) Deewan and Ali.
Show Explanation
D) Ali and Farah.
Show Explanation

Six persons Ali, Bilal, Omaima, Deewan, Eisha and Farah are sitting in two rows, three in each.

Eisha is not at the end of any row.

Deewan is second to the left of Farah.

Omaima (the neighbor of Eisha) is sitting diagonally opposite to Deewan.

Bilal is the neighbor of Farah.

After interchanging seat with Eisha, who will be the neighbors of Deewan in the new position?

AKU Practice Mock 2
Science Reasoning
A) Omaima and Ali
Show Explanation
B) Farah and Bilal
Show Explanation
C) Only Ali
Show Explanation
D) Only Omaima
Show Explanation

Organic compounds are molecules that frequently contain carbon, hydrogen, and oxygen joined together by covalent bonds.

As the number of bonds to oxygen atoms increases in a carbon chain, the overall molecule is increasingly oxidized. For example, aldehydes are more oxidized than alcohols, which are more oxidized than alkanes as shown in Table 1.

The melting points and viscosities of these compounds are listed in Table 2 and Table 3 respectively.

According to Table 3, how do the different types of 5-carbon molecules differ with respect to their viscosity?

AKU Practice Mock 2
Science Reasoning
A) The alkane has a higher viscosity than the aldehyde, and the aldehyde has a higher viscosity than the alcohol.
Show Explanation
B) The alkane has a higher viscosity than the alcohol, and the alcohol has a higher viscosity than the aldehyde.
Show Explanation
C) The alcohol has a higher viscosity than the alkene, and the alkene has a higher viscosity than the aldehyde.
The alcohol has a higher viscosity than the alkane, and the alkane has a higher viscosity than the aldehyde.

Show Explanation
D) The alcohol has a higher viscosity than the alkane and the alkane has a higher viscosity than the aldehyde.
Show Explanation

The piano is a large and versatile stringed musical instrument. The full name is ‘pianoforte’ meaning ‘soft-loud’.

The concert grand piano has a keyboard with 88 keys, each of which, when depressed, sets a mechanism in motion, resulting in a felt-covered hammer hitting strings and causing them to vibrate.

The pianist has control over whether notes are sounded loudly or softly depending on how hard he or she presses the key.

When the key is pressed, the lever body lifts and rotates, causing the jack to lift the hammer. When the jack hits the regulating rail (not shown), it rotates relative to the lever body and the hammer continues upwards without being pushed, hitting the string whilst moving freely.

A grand piano has three pedals; the left pedal moves the hammers relative to the strings so that the notes are played more softly; the right pedal lifts the dampers from all the strings; the center pedal causes any dampers that are already lifted by the player’s keystrokes to remain in the up position as long as the pedal is down.

When the hammer hits the strings, the energy transfer sequence relevant to the sounding of the note is

AKU Practice Mock 2
Science Reasoning
A) Potential energy of a hammer → potential energy of a string → sound energy
Show Explanation
B) Kinetic energy of hammer → potential energy of string → sound energy
Show Explanation
C) Kinetic energy of a hammer → kinetic energy of a string → sound energy
Show Explanation
D) Potential energy of hammer → kinetic energy of string → sound energy
Show Explanation

The shape below is a Roman tile known as an Ostia.

AKU Practice Mock 2
Science Reasoning
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

Organic compounds are molecules that frequently contain carbon, hydrogen, and oxygen joined together by covalent bonds.

As the number of bonds to oxygen atoms increases in a carbon chain, the overall molecule is increasingly oxidized. For example, aldehydes are more oxidized than alcohols, which are more oxidized than alkanes as shown in Table 1.

The melting points and viscosities of these compounds are listed in Table 2 and Table 3 respectively.

According to Tables 1 and 3, which organic compound has the highest viscosity?

AKU Practice Mock 2
Science Reasoning
A) Octanol
Show Explanation
B) Octanaldehyde
Show Explanation
C) Hexanol
Show Explanation
D) Butane
Show Explanation

A system of pulleys is a simple machine for changing the direction of a force and/or gaining mechanical advantage. Mechanical advantage is the size of the load divided by the size of the applied force.

In the simplest case, a single pulley can allow a horizontal force to support or raise a load. Assuming that friction in the system is negligible, the load can be supported or raised by a force F equal to the weight W of the load. The tension T is assumed to be constant throughout the length of the rope and all pulleys and ropes are assumed to be light and smooth.

In order to raise the load by a distance h the point X must be moved to the right a distance equal to

AKU Practice Mock 2
Science Reasoning
A) 0.5h
Show Explanation
B) h
Show Explanation
C) 1.4h
Show Explanation
D) 2h
Show Explanation

There are various ways to fold your arms: right in front of left or left in front of right, right hand tucked in or not, and left hand tucked in or not.

How many people with their arms folded do there need to be in a photograph to ensure that at least two people are folding their arms in the same way?

AKU Practice Mock 2
Science Reasoning
A) 4
Show Explanation
B) 7
Show Explanation
C) 8
Show Explanation
D) 9
Show Explanation

The piano is a large and versatile stringed musical instrument. The full name is ‘pianoforte’ meaning ‘soft-loud’.

The concert grand piano has a keyboard with 88 keys, each of which, when depressed, sets a mechanism in motion, resulting in a felt-covered hammer hitting strings and causing them to vibrate.

The pianist has control over whether notes are sounded loudly or softly depending on how hard he or she presses the key.

When the key is pressed, the lever body lifts and rotates, causing the jack to lift the hammer. When the jack hits the regulating rail (not shown), it rotates relative to the lever body and the hammer continues upwards without being pushed, hitting the string whilst moving freely.

A grand piano has three pedals; the left pedal moves the hammers relative to the strings so that the notes are played more softly; the right pedal lifts the dampers from all the strings; the center pedal causes any dampers that are already lifted by the player’s keystrokes to remain in the up position as long as the pedal is down.

The soundboard of the piano is a curved board that goes across the width of the piano under the strings. Its purpose is to

AKU Practice Mock 2
Science Reasoning
A) Amplify the sound of the piano.
Show Explanation
B) Stop the vibration of the piano.
Show Explanation
C) Hold the piano in shape.
Show Explanation
D) Provide damping so that the notes do not sound for too long.
Show Explanation

Organic compounds are molecules that frequently contain carbon, hydrogen, and oxygen joined together by covalent bonds.

As the number of bonds to oxygen atoms increases in a carbon chain, the overall molecule is increasingly oxidized. For example, aldehydes are more oxidized than alcohols, which are more oxidized than alkanes as shown in Table 1.

The melting points and viscosities of these compounds are listed in Table 2 and Table 3 respectively.

According to Table 2, the difference in melting point between an alkane and an alcohol with the same number of carbons is approximately how much?

AKU Practice Mock 2
Science Reasoning
A) 25 K
Show Explanation
B) 35 K.
Show Explanation
C) 45 K.
Show Explanation
D) 65 K.
Show Explanation

The piano is a large and versatile stringed musical instrument. The full name is ‘pianoforte’ meaning ‘soft-loud’.

The concert grand piano has a keyboard with 88 keys, each of which, when depressed, sets a mechanism in motion, resulting in a felt-covered hammer hitting strings and causing them to vibrate.

The pianist has control over whether notes are sounded loudly or softly depending on how hard he or she presses the key.

When the key is pressed, the lever body lifts and rotates, causing the jack to lift the hammer. When the jack hits the regulating rail (not shown), it rotates relative to the lever body and the hammer continues upwards without being pushed, hitting the string whilst moving freely.

A grand piano has three pedals; the left pedal moves the hammers relative to the strings so that the notes are played more softly; the right pedal lifts the dampers from all the strings; the center pedal causes any dampers that are already lifted by the player’s keystrokes to remain in the up position as long as the pedal is down.

Each of the piano strings has a damper on it (Figure 2), which is lifted when the piano key is played. The purpose of the damper is to

AKU Practice Mock 2
Science Reasoning
A) Make the strings vibrate longer
Show Explanation
B) Change the frequency of the vibrations of the strings.
Show Explanation
C) Stop the strings from vibrating.
Show Explanation
D) Prevent damage to the strings.
Show Explanation

A dog and a cat walk in the park along the path marked by the thick black line. The dog starts from P at the same time as the cat starts from Q. The dog walks three times as fast as the cat. At which point do they meet?

AKU Practice Mock 2
Science Reasoning
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

The family tree shows the inheritance of freckles.

The probability that the next child produced by parents 1 and 2, and the probability that the next child produced by parents 5 and 6 will have freckles respectively is

AKU Practice Mock 2
Science Reasoning
A) 0.5 and 0.75.
Show Explanation
B) 0.5 and 0.25.
Show Explanation
C) 1 and 0.5
Show Explanation
D) 1 and 0.75
Show Explanation

A 3 × 3 × 3 cube is made up of small 1 × 1 × 1 cubes. Then the middle cubes from front to back, from top to bottom and from right to left are removed.

How many 1 × 1 × 1 cubes remain?

AKU Practice Mock 2
Science Reasoning
A) 15.
Show Explanation
B) 18
Show Explanation
C) 20
Show Explanation
D) 21
Show Explanation

A system of pulleys is a simple machine for changing the direction of a force and/or gaining mechanical advantage. Mechanical advantage is the size of the load divided by the size of the applied force.

In the simplest case, a single pulley can allow a horizontal force to support or raise a load. Assuming that friction in the system is negligible, the load can be supported or raised by a force F equal to the weight W of the load. The tension T is assumed to be constant throughout the length of the rope and all pulleys and ropes are assumed to be light and smooth.

The mechanical advantage of this single pulley system is 1 because the

AKU Practice Mock 2
Science Reasoning
A) The direction of the force is moved through one right angle.
Show Explanation
B) The size of the force needed to raise the load is equal to the size of the load.
Show Explanation
C) The weight of the load is equal to the distance moved by the force.
Show Explanation
D) The tension in the rope is equal throughout its length.
Show Explanation

Which of the following are bilaterally symmetrical?

AKU Practice Mock 2
Biology
A) Arthropods.
Show Explanation
B) Roundworms.
Show Explanation
C) Humans.
Show Explanation
D) All of the above.
Show Explanation

In response to dehydration, ADH is secreted by the posterior pituitary gland. One of its effects is to stimulate

AKU Practice Mock 2
Biology
A) A reduction in the glomerular filtration rate.
Show Explanation
B) An increase in the number of aquaporins in the cell membranes of collecting duct cells.
Show Explanation
C) An increase in the uptake of water by cells in the proximal convoluted tubules of nephrons.
Show Explanation
D) An increase in the volume of urine produced by the kidneys.
Show Explanation

The trace represents the electrical activity of the heart during a single heartbeat.

Which letters identify the flow of current through the atria and the recovery of the ventricle walls?

AKU Practice Mock 2
Biology
A) P and R.
Show Explanation
B) P and T.
Show Explanation
C) Q and R.
Show Explanation
D) Q and S.
Show Explanation

Which statement is NOT true of ferns?

AKU Practice Mock 2
Biology
A) The gametophyte is larger than the sporophyte.
Show Explanation
B) Male gametes depend on water for fertilization.
Show Explanation
C) Eggs are fertilized by sperm in the archegonia.
Show Explanation
D) Ferns possess vascular tissue for the transport of water and minerals.
Show Explanation

What explains why the right and left sides of the heart contract simultaneously?

AKU Practice Mock 2
Biology
A) Both atria have a pacemaker (SAN).
Show Explanation
B) Both sides of the heart are supplied by the same coronary artery.
Show Explanation
C) Purkyne tissue links the two sides of the heart.
Show Explanation
D) There is no barrier to electrical excitation between two sides of the heart.
Show Explanation

In separate experiments, an actively photosynthesizing plant was supplied with one of two labeled reactants:

Water containing the 18O isotope of oxygen

Carbon dioxide containing the 17O isotope of oxygen

In which products of photosynthesis would these isotopes be found?

AKU Practice Mock 2
Biology
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

The function of the acrosome in the sperm head is to

AKU Practice Mock 2
Biology
A) Provide ATP for flagellar movements.
Show Explanation
B) Control DNA replication in the sperm.
Show Explanation
C) Store enzymes used for penetrating the egg during fertilization.
Show Explanation
D) Enclose the genetic material.
Show Explanation

The picture below shows a type of learning behavior. The given situation shows

AKU Practice Mock 2
Biology
A) Classical Conditioning.
Show Explanation
B) Operant Conditioning.
Show Explanation
C) Habituation.
Show Explanation
D) Insight Learning.
Show Explanation

The diagram above represents a freshwater protist. Which letter indicates a structure that prevents the accumulation of excess water?

AKU Practice Mock 2
Biology
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

Following is a labeled diagram of the human brain.

Which of the following is X responsible for?

AKU Practice Mock 2
Biology
A) Sensation of pleasure, punishment and sexual arousal.
Show Explanation
B) Means of communication between the two cerebral hemispheres.
Show Explanation
C) Intelligence, reasoning and long term memory.
Show Explanation
D) Auditory relay center and controls reflex movements of the eyes.
Show Explanation

Huntington’s disease is a degenerative disorder of the nervous system that follows an inheritance pattern of autosomal dominance. What is the probability that a child will inherit Huntington’s disease if one of the parents has an allele for the disease?

AKU Practice Mock 2
Biology
A) 0%.
Show Explanation
B) 25%.
Show Explanation
C) 50%.
Show Explanation
D) 100%.
Show Explanation

Which of the following is an INCORRECT association?

AKU Practice Mock 2
Biology
A) Porifera: sessile.
Show Explanation
B) Annelida: coelom.
Show Explanation
C) Platyhelminthes: anus.
Show Explanation
D) Insects: tracheal tubes.
Show Explanation

Cocklebur, a short day plant is exposed to different conditions of light.

Under which of the given conditions does cocklebur produce flowers?

AKU Practice Mock 2
Biology
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

Which of the following characteristics are present in monocots?

AKU Practice Mock 2
Biology
A) I only.
Show Explanation
B) II only.
Show Explanation
C) I and III.
Show Explanation
D) II and III.
Show Explanation

There is a high degree of homology in the DNA of dogs and wolves. Which of the following best explains why dogs and wolves show a high degree of similarity in their DNA?

AKU Practice Mock 2
Biology
A) The morphologies of dogs and wolves are similar.
Show Explanation
B) Dogs and wolves share the same ecological niche.
Show Explanation
C) Dogs and wolves share a very recent common ancestor.
Show Explanation
D) The high degree of homology is the result of convergent evolution.
Show Explanation

Which statements about the concentrations of hormones in the human menstrual cycle are correct?

I. Shortly before ovulation, the concentration of estrogen is high and concentration of progesterone low.

II. During the last quarter of the cycle, the concentrations of estrogen and progesterone fall.

III. At the end of menstruation, the concentration of estrogen is low but rising, and the concentration of progesterone is low.

IV. Just before ovulation, the concentrations of LH and FSH suddenly rise.

AKU Practice Mock 2
Biology
A) I, II, III and IV.
Show Explanation
B) I, II and IV only.
Show Explanation
C) II and III only.
Show Explanation
D) III and IV only.
Show Explanation

Meiosis is a special type of cell division important in human gametogenesis. Which of the following statements about human gamete formation is correct?

AKU Practice Mock 2
Biology
A) Spermatogenesis and oogenesis are both regulated by a monthly cycle.
Show Explanation
B) The result of oogenesis is the formation of four fully functional ova.
Show Explanation
C) The result of oogenesis is the formation of four fully functional ova.
Show Explanation
D) Spermatogenesis results in four fully functional sperm cells.
Show Explanation

In a certain population, the frequency of homozygous curly hair (CC) is 64%. What percentage of the population has curly hair?

AKU Practice Mock 2
Biology
A) 32%.
Show Explanation
B) 56%.
Show Explanation
C) 64%.
Show Explanation
D) 96%.
Show Explanation

Kangaroo rats live in desert habitats. Which of the following physiological or behavioral adaptations increases their survival in this hot and dry environment?

AKU Practice Mock 2
Biology
A) Frequent drinking.
Show Explanation
B) Frequent urination.
Show Explanation
C) Nephrons with long loops of Henle.
Show Explanation
D) Numerous sweat glands in their skin.
Show Explanation

A tree stands 6 m high and is 0.20 m in diameter. A branch falls, leaving a scar that is 0.90 m above the ground. In 20 years if the tree is 36 m high, that scar will be how far from the ground?

AKU Practice Mock 2
Biology
A) 0.90 m.
Show Explanation
B) 6.00 m.
Show Explanation
C) 12.00 m.
Show Explanation
D) 18.00 m.
Show Explanation