Of the following substances, which is likely to have the largest value of the coefficient ‘a’ in the van der Waals’ equation of state for real gases shown below?

AKU Practice Mock 1
Chemistry
A) H2
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B) CO2
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C) NH3
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D) CH4
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Which formula correctly represents the diamminediaquadibromochromium(III) ion?

AKU Practice Mock 1
Chemistry
A) [Cr(H2O)2(NH3)2Br2]+
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B) [(NH3)2(H2O)Br2Cr]3+
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C) [Cr(H2O)2(NH3)2Br2]3+
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D) [Cr(H2O)2(NH3)Br2]2+
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A 200 cm3 flask contains oxygen at 200 mm Hg, and a 300 cm3 flask contains neon at 100 mm Hg.
The two flasks are connected so that each gas fills their combined volumes.
Assuming no change in temperature, what is the partial pressure of neon in the final mixture?

AKU Practice Mock 1
Chemistry
A) 60 mm Hg
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B) 100 mm Hg
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C) 150 mm Hg
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D) 200 mm Hg
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Which reagent will give similar results with both butanone and butanal?

AKU Practice Mock 1
Chemistry
A) Acidified aqueous potassium dichromate (VI)
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B) An alkaline solution containing complexed Cu2+ ions (Fehling’s solution)
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C) An aqueous solution containing [Ag(NH3)2] * (Tollens’ reagent)
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D) 2,4-dinitrophenylhydrazine reagent
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A hydrocarbon gas decolorizes alkaline potassium permanganate and gives precipitate with ammonical silver nitrate. The gas is

AKU Practice Mock 1
Chemistry
A) Methane
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B) Ethene
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C) Ethyne
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D) Ethane
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The complete combustion of alkanes to produce carbon dioxide and water is an important exothermic reaction.
Which line on the graph shows the relationship between the number of carbon atoms in the alkane and the number of moles of oxygen gas needed for complete combustion of the alkane?

AKU Practice Mock 1
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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Which organic compound undergoes ozonolysis to form the following carbonyl compound?

AKU Practice Mock 1
Chemistry
A) Ethene
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B) Propyne
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C) Acetylene
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D) Benzene
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The table below lists the molar masses and boiling points of methane and water at standard pressure. Which of the following explains the large difference between the boiling points of methane and water?

AKU Practice Mock 1
Chemistry
A) Water needs more energy to boil because it ionizes into hydrogen and hydroxide ions
Show Explanation
B) Most compounds that contain oxygen have higher boiling points
Show Explanation
C) Hydrogen bonding in water increases the attractive forces between molecules
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D) Water molecules have greater contact points for stronger van der Waals’ forces
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The acid strength of substituted carboxylic acids is known to be dependent on the nature and position of the substituent. In the following examples, an attempt has been made to arrange the acids in order of acid strength, the strongest first. Which one of the series is incorrect?

AKU Practice Mock 1
Chemistry
A) CH3CH2CH(CI)COOH > CH3CH(Cl)CH2COOH > CH3CH2CH2COOH
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B) NO2CH2COOH > HOCH2COOH > CH3COOH
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C) CICH2COOH > BrCH2COOH > FCH2COOH
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D) CH3COOH > CH3CH2COOH > (CH3)3CCOOH
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Graphite exists in the form of layers. It is a conductor parallel to the layers but insulator across the layers. This property of graphite is known as

AKU Practice Mock 1
Chemistry
A) Symmetry
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B) Anisotropy
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C) Isomorphism
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D) Polymorphism
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All of the following statements are consistent with Bohr’s model of the atom EXCEPT

AKU Practice Mock 1
Chemistry
A) An electron may assume an infinite number of velocities
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B) An atom is most stable when its electronic configuration is that of the ground state
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C) The electron shell numbers represent the principal energy levels
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D) Electrons in orbitals closest to the nucleus have the lowest energy
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What is the product of the reaction shown below?

AKU Practice Mock 1
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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Which compound shows optical isomerism and gives a positive test with alkaline aqueous iodine?

AKU Practice Mock 1
Chemistry
A) CH3COCH(OH)CH3
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B) CH3COCH2CH2OH
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C) HOCH2CH(CH3)CHO
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D) (CH3)2C(OH)CHO
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Which of the following statements is TRUE about Lucas test?

AKU Practice Mock 1
Chemistry
A) The test distinguishes among primary, secondary and tertiary amines
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B) The test result confirms that 1° carbocations are more stable than 2° and 3°.
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C) The test reagent is a saturated solution of anhydrous ZnCl2 in concentrated HCl.
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D) The test uses an aqueous solution of sodium hydroxide and benzenesulfonyl chloride
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A solid cube of 6 x 6 x 6 is cut into 216 small cubes of 1 x 1 x 1. The big cube had been painted on all its faces. How many of the small cubes are painted on at least 2 sides?

AKU Practice Mock 1
Mathematics Reasoning
A) 9
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B) 16
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C) 48
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D) 56
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A school has four sections A, B, C, D of Class IX students.

The results of half yearly and annual examinations are shown in the table given below.

How many students are there in Class IX in the school?

AKU Practice Mock 1
Mathematics Reasoning
A) 189
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B) 335
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C) 336
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D) 430
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The object of the sport of archball is to kick the ball towards a circular target that has a hole in its center.

Two types of goal can be scored:
• A touch goal, worth 2 points, is scored when the ball makes contact with the target.
• A through goal, worth 5 points, is scored if the ball passes through the central hole.

Inter-school Archball Cup has been won this year by School X, beating School Y 23 – 14 in the final.

Which one of the following additional pieces of information is sufficient, by itself, for the total number of goals scored during the match to be deduced?

AKU Practice Mock 1
Mathematics Reasoning
A) School X scored more goals than School Y
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B) School X scored more touch goals than School Y
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C) More touch goals than through goals were scored during the match
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D) School Y scored more through goals than School X
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There are three giants: X, Y and Z. The total height of X and Y is 27 feet. The total height of X and Z is 42 feet. If Z is 4 times taller than Y, how tall is X?

AKU Practice Mock 1
Mathematics Reasoning
A) 5 feet
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B) 15 feet
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C) 20 feet
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D) 22 feet
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Two bus tickets from city A to B and three tickets from city A to C cost Rs.77, but three tickets from city A to B and two tickets from city A to C cost Rs.73. What are the fares for cities B and C from A?

AKU Practice Mock 1
Mathematics Reasoning
A) Rs.4, Rs.23
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B) Rs.13, Rs.17
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C) Rs.15, Rs.14
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D) Rs.17, Rs.13
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A school has four sections A, B, C, D of Class IX students.

The results of half yearly and annual examinations are shown in the table given below.

If the number of students passing an examination be considered a criteria for comparison of difficulty level of two examinations, which of the following statements is true in this context?

AKU Practice Mock 1
Mathematics Reasoning
A) Half yearly examinations were more difficult
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B) Annual examinations were more difficult
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C) Both the examinations had almost the same difficulty level
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D) The two examinations cannot be compared for difficulty level
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There are five friends – Hamza, Kashif, Malik, Bilal and Rohan. Hamza is shorter than Kashif but taller than Rohan. Malik is the tallest. Bilal is a little shorter than Kashif and a little taller than Hamza. If they stand in the order of increasing heights, who will be the second?

AKU Practice Mock 1
Mathematics Reasoning
A) Bilal
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B) Hamza
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C) Rohan
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D) Kashif
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There are 50 dogs signed up to compete in a dog show. There are 36 more small dogs than large dogs signed up to compete. How many small dogs are signed up to compete?

AKU Practice Mock 1
Mathematics Reasoning
A) 7
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B) 15
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C) 43
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D) 49
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Akbar starts walking towards south. After walking 15 m, he turns towards north. After walking 20 m, he turns towards east and walks 10 m. He then turns towards south and walks 5 m.

How far is he from his original position?

AKU Practice Mock 1
Mathematics Reasoning
A) He is back at his original position
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B) 5 m
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C) 10 m
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D) 20 m
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The following clock displays time accurately like any other 12-hour clock.

However, this clock has no numbers, and the clock has been rotated out of position. Based on the position of the hour and minute hands, the time is between

AKU Practice Mock 1
Mathematics Reasoning
A) 3:00 and 4:00
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B) 6:00 and 7:00
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C) 8:00 and 9:00
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D) 10:00 and 11:00
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The sum of four consecutive integers is 2. What is the smallest of these integers?

AKU Practice Mock 1
Mathematics Reasoning
A) -3
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B) -2
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C) -1
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D) 0
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A solid shape is made by joining three cubes together with the largest cube on the bottom and the smallest on the top. Where the faces of two cubes join, the corners of the smaller cube are at the midpoints of the sides of the larger cube.

The sides of the smallest cube have a length of 1 cm. What is the total surface area of the shape?

AKU Practice Mock 1
Mathematics Reasoning
A) 30 cm2
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B) 33 cm2
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C) 36 cm2
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D) 39 cm2
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How many triangles do you see in the following image?

AKU Practice Mock 1
Mathematics Reasoning
A) 9
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B) 11
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C) 13
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D) 15
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Ahmed, Ali, Anam, Maryam and Ainee are siblings. They sit together for a picture. Ahmed wants to sit next to Anam.

In how many ways can they sit for the picture such that Ahmed is always next to Anam?

AKU Practice Mock 1
Mathematics Reasoning
A) 16
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B) 28
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C) 36
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D) 48
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The sum of the digits of a three-digit number is 17. The sum of the first and third digits is one more than three times the second digit. If the digits are reversed, the new number is 297 greater than the original number. What is the original number?

AKU Practice Mock 1
Mathematics Reasoning
A) 359
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B) 548
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C) 763
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D) 845
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The diagram shows a shape made from ten squares of side length 1 cm joined edge to edge.

What is the length of its perimeter?

AKU Practice Mock 1
Mathematics Reasoning
A) 14 cm
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B) 18 cm
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C) 30 cm
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D) 32 cm
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Ten years ago, X was half of Y’s age. If the ratio of their present ages is 3:4, what will be the total of their present ages?

AKU Practice Mock 1
Mathematics Reasoning
A) 5
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B) 15
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C) 20
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D) 35
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The length and breadth of the room are 8 m and 6 m respectively. A cat runs along all four walls and finally along a diagonal order to catch a rat. How much total distance is covered by the cat?

AKU Practice Mock 1
Mathematics Reasoning
A) 14 m
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B) 28 m
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C) 38 m
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D) 56 m
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If 4 men in 5 days eat 7 pounds of bread. How many pounds of bread will be sufficient for 16 men in 15 days?

AKU Practice Mock 1
Mathematics Reasoning
A) 36
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B) 45
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C) 84
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D) 144
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The distance from the top of the sleeping cat on the floor to the top of the cat sitting on the table is 150 cm. The distance from the top the cat sitting on the floor to the top on the cat sleeping on the table is 110 cm. What is the height of the table?

AKU Practice Mock 1
Mathematics Reasoning
A) 120 cm
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B) 130 cm
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C) 140 cm
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D) 145 cm
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The space probe Rosetta was designed to investigate a comet. The probe consisted of an orbiter and a lander. The orbiter had a mass of 170 kg and the lander had a mass of 100 kg. When the two parts separated, the lander was pushed towards the surface of the comet so that its change in velocity towards the comet was 3.0 m/s.

Assume that the orbiter and lander were an isolated system. The orbiter moved away from the comet during the separation. What was the change in the speed of the orbiter?

AKU Practice Mock 1
Science Reasoning
A) 1.8 m/s
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B) 2.3 m/s
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C) 3.0 m/s
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D) 5.1 m/s
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There are six friends sitting in a circle and facing away from the center of the circle.
Ahmed is between Ali and Saalaar.
Salal is sitting between Abdullah and Ibrahim.
Ali and Abdullah are sitting opposite to each other.

Who is opposite to Ahmed?

AKU Practice Mock 1
Science Reasoning
A) Ali
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B) Ibrahim
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C) Salal
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D) Abdullah
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Aortic stenosis is a heart valve disorder in which the aortic semi-lunar valve opening is narrow.

Which effect could aortic stenosis have on the heart structure and function?

AKU Practice Mock 1
Science Reasoning
A) The tendons of the heart valves are weakened by blood being forced back through the bicuspid/left atrio-ventricular valve into the left atrium
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B) The cardiac muscle of the left ventricle wall is thinned by blood leaking out of the left ventricle during ventricular diastole
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C) There is less cardiac muscle in the left ventricle and reduced diastolic blood pressure, caused by the smaller blood volume entering the left atrium
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D) The wall of the left ventricle thickens, leading to an enlarged heart and inability to relax and fill completely during diastole
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When Hamza wears his new shirt properly as shown on the left, the horizontal stripes form seven closed rings around his waist. This morning he buttoned his shirt wrongly, as shown on the right.

How many closed rings were there around Hamza’s waist this morning?

AKU Practice Mock 1
Science Reasoning
A) 0
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B) 2
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C) 4
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D) 6
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Scientists discover two hypothetical species of freshwater fish living in small pools that are connected by streams during the rainy season but isolated from each other during the dry season. Species A reproduces asexually. Species B reproduces sexually. Both species are susceptible to a parasitic worm that causes a condition called “Black Spot Disease.”

Scientists identified a pool in which both species of fish lived but in which no parasite existed. After taking an initial survey of both
populations, scientists then intentionally infected the pool with the parasite that causes Black Spot Disease. Three years later they returned and resampled the populations of the two species of fish in the pool. Their results are represented in the graph below.

Which of the following statements are best supported by the results of this experiment?

AKU Practice Mock 1
Science Reasoning
A) Species B can reproduce faster and out-compete species A for food and other resources
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B) Species B is a predator of species A except when species A is infected by a parasite
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C) Species A is partially protected from the effects of the parasite by the presence of species B
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D) Species A is more susceptible to the effects of the parasite due to its lack of genetic diversity
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Two species of animal are found in the same area of forest and grassland. In the spring and summer they eat the same plant food. However, in the autumn and winter one eats nuts in the forest and the other eats roots on the grassland. Both species are preyed upon by the same predator. Numbers of root-eating animals are reduced most by this, but they recover faster since they reproduce faster.

What can be concluded about these two species of animals?
I. They are part of the same community.
II. They are at different trophic levels.
III. They occupy different habitats.
IV. They have different niches

AKU Practice Mock 1
Science Reasoning
A) I and II only
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B) I and IV only
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C) II, III and IV only
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D) I, III and IV only
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Ayesha wants to spend 18 consecutive days visiting her Grandma. Her Grandma reads her story books on story days Tuesday, Saturday and Sunday. Ayesha wants to spend as many story days with her Grandma as possible. On which day of the week should she start her visit?

AKU Practice Mock 1
Science Reasoning
A) Tuesday
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B) Friday
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C) Saturday
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D) Sunday
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Based on the results of Experiment 3, one can reasonably conclude that as the amount of NaCl added increased from 0 mol to 0.100 mol, the maximum rise in temperature within 15 min of the start of the reaction

AKU Practice Mock 1
Science Reasoning
A) Increased only
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B) Increased then stayed the same
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C) Decreased only
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D) Decreased, then stayed the same
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There are six friends sitting in a circle and facing away from the center of the circle.
Ahmed is between Ali and Saalaar.
Salal is sitting between Abdullah and Ibrahim.
Ali and Abdullah are sitting opposite to each other.

Who are neighbors of Abdullah?

AKU Practice Mock 1
Science Reasoning
A) Ahmed and Ali
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B) Salal and Ali
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C) Salal and Ibrahim
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D) Saalaar and Salal
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There are six friends sitting in a circle and facing away from the center of the circle.
Ahmed is between Ali and Saalaar.
Salal is sitting between Abdullah and Ibrahim.
Ali and Abdullah are sitting opposite to each other.

Who is to the right of Ali?

AKU Practice Mock 1
Science Reasoning
A) Ahmed
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B) Ibrahim
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C) Salal
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D) Abdullah
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The diagram shows a fire ladder. For each section of the ladder except the final one, the cable passes from a fixed point at the bottom of the section, over a pulley and is attached to a point at the top of the next section. On the final section of the ladder, the cable is wound around the drive pulley.

When the drive pulley is turned clockwise, the ladder____________

AKU Practice Mock 1
Science Reasoning
A) Extends
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B) Closes up
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C) Becomes nearer to the vertical
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D) Becomes nearer to the horizontal
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The game of “NIM” involves rows of matches laid out to make a triangle. When it is your go, you must take one or more matches away BUT THEY ALL MUST COME FROM THE SAME ROW. You win if you force the other person to take the last match. The diagram shows the game at the start and in midplay. It is your go. Which match(es) should you take to win the game?

AKU Practice Mock 1
Science Reasoning
A) 1 only
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B) 3 and 4
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C) 3 and 5
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D) 2, 3 and 4
Show Explanation

The mechanism of action of four drugs that inhibit DNA replication is stated below.
● Aphidicholine inhibits DNA polymerase.
● Cytarabine is converted into a molecule that can substitute for a DNA nucleotide and also inhibits DNA repair mechanisms.
● Epirubicin inhibits an enzyme involved in the unwinding of DNA and separation of strands.
● Hydroxycarbamide inhibits an enzyme involved in the production of deoxyribonucleotides.

Which row correctly matches a drug to an explanation of the mechanism of action?

AKU Practice Mock 1
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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Epidemiology is the study of diseases in populations of humans or other animals, specifically how, when and where they occur.

Epidemiologists attempt to determine what factors are associated with diseases (risk factors), and what factors may protect people or animals against disease (protective factors). The science of epidemiology was first developed to discover and understand possible causes of contagious diseases like smallpox, typhoid and polio among humans. It has expanded to include the study of factors associated with non-transmissible diseases like cancer, and of poisonings caused by environmental agents.

Epidemiological studies can never prove causation; that is, it cannot prove that a specific risk factor actually causes the disease being studied. Epidemiological evidence can only show that this risk factor is associated (correlated) with a higher incidence of disease in the population exposed to that risk factor. The higher the correlation the more certain the association, but it cannot prove the causation.

Which statement is an example of epidemiological evidence linking smoking to lung cancer?

AKU Practice Mock 1
Science Reasoning
A) Chemical analysis of tar from cigarettes shows that it contains carcinogens
Show Explanation
B) Dogs made to inhale the smoke from cigarettes develop lung tumors
Show Explanation
C) The incidence of lung cancer increases in a population as more cigarettes are smoked
Show Explanation
D) When tar from cigarettes is rubbed onto the skin of mice, the mice develop skin tumors
Show Explanation

Which of the following factors affecting the reaction of Mg and H2O was studied in Experiment 1, but not in Experiments 2 or 3?

AKU Practice Mock 1
Science Reasoning
A) Reaction temperature
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B) Addition of NaCl
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C) Addition of Fe
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D) Surface area of Mg
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A circle with radius 1 rolls along a straight line from point K to point L, as shown, with KL = 11π In which position is the circle when it has arrived in L?

AKU Practice Mock 1
Science Reasoning
A) A
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B) B
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C) C
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D) D
Show Explanation

Anaya, Beenish, Faryal, Yasmin and Kubra meet at a party. Each pair who know each other shake hands exactly once. Anaya shakes hands only once, Beenish twice, Faryal three times and Yasmin four times. How many people does Kubra shake hands with?

AKU Practice Mock 1
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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Tahir wants to write a number in each of the nine cells of the figure shown. He wants the sum of the three numbers on each diameter to be 13 and the sum of the eight numbers on the circumference to be 40. What number has Tahir to write in the central cell?

AKU Practice Mock 1
Science Reasoning
A) 3
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B) 5
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C) 8
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D) 10
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Which of the following is the most likely reason that amounts greater than 0.125 mol of NaCl were not tested in Experiment 3? The results showed that

AKU Practice Mock 1
Science Reasoning
A) Adding more NaCl no longer increased the reaction rate
Show Explanation
B) Adding more NaCl would decrease the reaction rate
Show Explanation
C) The boiling point was reached, so no further data could be gathered with this procedure
Show Explanation
D) More Fe would need to be added for any greater increase in temperature to occur
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In a basket, the number of oranges gets doubled after every minute. If the basket is completely filled in 120 minutes, how long would it have taken to get half filled?

AKU Practice Mock 1
Science Reasoning
A) 60 minutes
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B) 97 minutes
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C) 118 minutes
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D) 119 minutes
Show Explanation

Hydrogen atom does not emit X-rays because

AKU Practice Mock 1
Chemistry
A) Its size is very small
Show Explanation
B) It contains only a single electron
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C) Energy levels in it are far apart
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D) Energy levels in it are very close to each other
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The figure below represents a normal diploid cell with 2n = 8. Each of the four symbols inside the cell represents a unique chromosome.

Which of the following represents the gamete?

AKU Practice Mock 1
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 heat of neutralization of any strong acid and a strong base is always constant. This is because

AKU Practice Mock 1
Chemistry
A) Both the acid and base undergo complete ionization
Show Explanation
B) During the neutralization, salt and water are formed
Show Explanation
C) 1 mole of water is formed from hydrogen and hydroxide ions
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D) The reaction is exothermic
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A phenomenon which works opposite to linkage is

AKU Practice Mock 1
Biology
A) Independent Assortment
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B) Crossing-over
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C) Segregation.
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D) Mutation
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DNA is said to replicate in a semi-conservative way.
Results of Meselson and Stahl’s experiments gave overwhelming support to this theory. They used E. coli which has a generation time of 50 minutes.
Here are the steps in their experiment but they are in the wrong order.
P. All bacteria contain 15N DNA.
Q. All bacteria contain hybrid DNA (15N DNA and 14N DNA).
R. Bacteria contain either all 14N DNA or hybrid DNA.
S. Bacteria grown in a 15N medium for many generations.
T. Bacteria transferred to a 14N medium and sampled every 50 minutes.
Which sequence of letters shows the correct order of the steps in the experiment?

AKU Practice Mock 1
Biology
A) . P → Q → R → S → T
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B) P → S → T → R → Q
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C) S → P → T → Q → R
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D) S → R → Q → P → T
Show Explanation

A tumor is removed from a patient, and when investigated by pathologists, appears to contain tissue resembling placenta, hair, thyroid tissue, and cardiac muscle. What was the likely potency of the cells from which this tumor originated?

AKU Practice Mock 1
Biology
A) Non-potent
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B) Multipotent
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C) Pluripotent
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D) Totipotent
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All arthropods

AKU Practice Mock 1
Biology
A) Have a body consisting of three parts (the head, the thorax, and the abdomen).
Show Explanation
B) Breathe through spiracles that lead to the tracheal tubes
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C) Have a hard, calcium-rich shell with a soft mantle
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D) Have jointed appendages and exoskeletons
Show Explanation

All of the following occur for the contraction of a motor muscle EXCEPT

AKU Practice Mock 1
Biology
A) The sarcoplasmic reticulum releases Ca2+
Show Explanation
B) The actin cross-bridges attach to the myosin filaments
Show Explanation
C) An action potential travels along the T-tubules
Show Explanation
D) A neurotransmitter diffuses across the neuromuscular junction
Show Explanation

A host plant produces a toxin that is lethal to aphids feeding on its leaves. Over time, some of the aphids become immune to the toxin. In response, the host plant begins to produce a different toxin that is lethal to aphids. This is an example of

AKU Practice Mock 1
Biology
A) Parasitism
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B) Commensalism
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C) Predation
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D) Coevolution
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A fragment of DNA, cut by a restriction enzyme, forms bonds with other DNA molecules that have

AKU Practice Mock 1
Biology
A) Been fragmented by the same restriction enzyme
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B) Sticky ends
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C) Plasmid components
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D) Been attached to methyl groups
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A tree was girdled by completely removing a ring of bark from its entire circumference to a depth to, but not including, the sapwood. This would most likely result in an inability to

AKU Practice Mock 1
Biology
A) Transport water to leaves
Show Explanation
B) Transport water to roots
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C) Transport carbohydrates to roots
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D) Obtain water from the surrounding soil
Show Explanation

In the sexual life cycle of a plant shown in the figure below, all of the following are true EXCEPT

AKU Practice Mock 1
Biology
A) Gametes are produced by meiosis
Show Explanation
B) The life cycle shows an alternation of generations
Show Explanation
C) Fertilization occurs between stages II and III
Show Explanation
D) Mitosis occurs between stages III and IV
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According to Raoult’s law, which statement is false?

AKU Practice Mock 1
Chemistry
A) The vapor pressure of a solvent over a solution is less than that of the pure solvent
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B) The vapor pressure of a pure solvent when measured over a solution decreases as the mole fraction increases
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C) The solubility of a gas increases as the temperature decreases
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D) The solubility of a gas in solution increases as the pressure of the gas increases.
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In fruit flies, a gene for eye color is X-linked. The dominant wild type allele produces red eyes (R), and the recessive mutant allele produces white eyes (r). A female who is heterozygous for red eyes is crossed with a white-eyed male.
What are the expected phenotypic results for this cross with respect to eye color and sex?

AKU Practice Mock 1
Biology
A) 2:1:1:1
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B) 1:1:1:1
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C) 2:1:2:1
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D) 0:2:0:2
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Echinoderms are regarded as being closely related to chordates due to their

AKU Practice Mock 1
Biology
A) Bilateral symmetry
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B) Endoskeleton
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C) Possession of a notochord
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D) Early embryonic development
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A linear molecule can have the general formulas AA, AB, or AB2.
Given a molecule with the general formula AB2, which one of the following would be the most useful in determining whether the molecule was bent or linear?

AKU Practice Mock 1
Chemistry
A) Ionization energies
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B) Electron affinities
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C) Dipole moments
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D) Electronegativities
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Refer to the graph below that reports measurements of pH in plant leaves during a 36-hour period. The graph could be illustrating which of the following processes?

AKU Practice Mock 1
Biology
A) CAM photosynthesis
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B) Calvin cycle
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C) C4 photosynthesis
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D) Non-cyclic photophosphorylation
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The axillary bud is constituted by the cells left behind from

AKU Practice Mock 1
Biology
A) Root Apical Meristem
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B) Shoot Apical Meristem
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C) Intercalary Meristem
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D) Lateral Meristem
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Pine leaves (needles) have a thick cuticle, stomata that are sunken below the surface, and an endodermis with Casparian strips.
These features suggest leaf adaptation to

AKU Practice Mock 1
Biology
A) Cold habitats
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B) Dry habitats
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C) Wet habitats
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D) Insect predation
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Consecutive elements X, Y, Z are in the third period of the Periodic Table. Element Y has the highest first ionization energy and the lowest melting point.
What could be the identities of X, Y and Z?

AKU Practice Mock 1
Chemistry
A) Aluminium, Silicon, Phosphorus
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B) Magnesium, Aluminium, Silicon
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C) Silicon, Phosphorus, Sulfur
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D) Sodium, Magnesium, Aluminium
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All of the following statements about cellular respiration are true EXCEPT

AKU Practice Mock 1
Biology
A) Some of the products from the breakdown of proteins enter the Krebs cycle
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B) Some of the products from the breakdown of lipids enter the Krebs cycle
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C) If oxygen is present, water is produced
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D) The purpose of oxygen in aerobic respiration is to donate the electrons that transform NAD+ + H+ to NADH.
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Calcium carbonate, CaCO3, reacts with dilute hydrochloric acid to produce carbon dioxide. The relative formula mass of calcium carbonate is 100 and the equation for the reaction is:

CaCO3 + 2HCl → CaCl2 + H2O + CO2

10 g of calcium carbonate is reacted with an excess of dilute hydrochloric acid. Which mass of carbon dioxide is produced?

AKU Practice Mock 1
Chemistry
A) 2.2 g
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B) 2.8 g
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C) 4.4 g
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D) 44 g
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Some characteristics of a phylum are given below.
Animals with soft cylindrical, unsegmented body with a false body cavity.
Identify the described phylum from the options below

AKU Practice Mock 1
Biology
A) Platyhelminthes
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B) Aschelminthes.
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C) Porifera
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D) Echinodermata
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What occurs in neurons during the refractory period following an action potential?

AKU Practice Mock 1
Biology
A) The outside of the membrane becomes more negative with respect to the inside
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B) Na+ moves across the neuron membrane from outside to inside
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C) K+ moves across the neuron membrane from inside to outside
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D) Na+ on the inside and K+ on the outside exchange places across the neuron membrane
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Wild Japanese monkeys were fed wheat that was scattered on the beach. This required the monkeys to collect that wheat one grain at a time from among the sand grains.
One monkey discovered that by throwing a handful of sand and wheat into the ocean, the sand would sink and the wheat would float. She could then easily collect the wheat.
What is the learning technique employed when the monkey discovered she could separate the sand and wheat using water?

AKU Practice Mock 1
Biology
A) Classical conditioning.
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B) Imprinting
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C) Instinct.
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D) Trial-and-error learning
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Most fish do not sink in water because of the presence of
I. Swim bladder
II. Air bladder
III. Air sacs
IV. Air in spongy bones

AKU Practice Mock 1
Biology
A) I and II are correct
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B) II and III are correct
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C) III and IV are correct
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D) I, II, III and IV are correct
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Liquid passing through a narrowing tube, as shown, has a speed of 0.5 m/s at A1 (30 cm2). At A2, (10 cm2) its speed is

AKU Practice Mock 1
Physics
A) 0.5 m/s
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B) 1.0 m/s
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C) 1.5 m/s
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D) 2.0 m/s
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A very rich boy has an ice hockey practice floor that is essentially frictionless installed in a long refrigerated boxcar. As the train is moving, the boy practices shooting at the goal at the other end of the car. Just as he releases his shot, the train goes around a sharp curve to the left (looking forward in the direction the boy is shooting).
Which statement most accurately describes the boy’s shot?

AKU Practice Mock 1
Physics
A) It curves to the right and misses to the right side of the net
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B) It curves to the left and misses to the left side of the net
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C) It travels straight and misses to the right side of the net
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D) It travels straight and misses to the left side of the net
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The current in the following illustration flows from

AKU Practice Mock 1
Physics
A) A to B
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B) B to C
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C) C to D
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D) C to F
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Spherical balls of radius R are falling in a viscous fluid of viscosity η with a velocity v. The retarding viscous force acting on the spherical ball is

AKU Practice Mock 1
Physics
A) Inversely proportional to both radius ‘R’ and velocity ‘v’
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B) Directly proportional to both radius ‘R’ and ‘velocity ‘v
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C) Directly proportional to ‘R’ but inversely proportional to ‘v’
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D) Inversely proportional to ‘R’ but directly proportional to velocity ‘v
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A very small oil drop of mass m carries a charge +q

The potential difference across the plates is V and the separation is d.

The weight of the drop is balanced by the electric force.

Which formula gives the charge on the drop?

AKU Practice Mock 1
Physics
A) q = mgd/V
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B) q = mgV/d
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C) q = Vd/mg
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D) q = V/mgd
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The diagram shows the arrangement of three small uniformly charged spheres A, B and C. The arrows indicate the direction of the electrostatic forces acting between the spheres (for example, the left arrow on sphere A indicates the electrostatic force on sphere A due to sphere B)

At least two of the spheres are positively charged. Which sphere, if any, could be negatively charged?

AKU Practice Mock 1
Physics
A) Sphere A
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B) Sphere B
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C) Sphere C
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D) Sphere D
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The transverse wave in the rope shown below

I. Will reflect on the opposite side of the rope.
II. Will reflect with equal amplitude.
III. Will reflect with an equal velocity

AKU Practice Mock 1
Physics
A) I only
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B) I and II only
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C) II only
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D) I, II, and III
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The half-life of carbon-14 is 5730 years. How long will it take for 7/8 of a sample of carbon-14 to decay?

AKU Practice Mock 1
Physics
A) 11,460 years
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B) 17,190 years
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C) 22,920 years
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D) 28,650 years
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Two objects, of masses M and m respectively, approach each other from opposite directions, each with speed v m/s. Upon impact, m becomes lodged in M. Their combined velocity is now

AKU Practice Mock 1
Physics
A) (Mv + mv) / (M + m)
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B) (Mv – mv) / (M + m)
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C) (Mv – mv) / (M – m)
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D) (Mv + mv) / (M – m)
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An electromagnetic wave is incident normally on a diffraction grating.
A second-order maximum is produced at an angle of 30o to a normal to the grating.
The grating has 5000 lines per cm.
What is the wavelength of the wave?

AKU Practice Mock 1
Physics
A) 2.5 × 10–7 m
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B) 5.0 × 10–7 m
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C) 1.0 × 10–6 m
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D) 5.0 × 10–5 m
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The angle between the incident and reflected rays is 90o . If the plane mirror is rotated by 10o about O in the anti-clockwise direction in the plane perpendicular to the mirror, then the angle between the incident and reflected rays will be.

AKU Practice Mock 1
Physics
A) 70o
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B) 90o
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C) 100o
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D) 110o
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Cut off wavelength of X-rays coming from an X-ray tube depends on the

AKU Practice Mock 1
Physics
A) Target material
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B) Accelerating voltage
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C) Separation between the target and the filament
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D) Temperature of the filament
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Two 1 liter containers contain 1 mole each of the same gas at the same temperature.
Gas of container A is allowed to expand until the temperature of gas A is reduced by half.
Gas of container B is compressed until the temperature of gas B doubles.
Both gases are then mixed together in a 2 liter container.
Which of the following statements about the gases is correct?

AKU Practice Mock 1
Physics
A) Both gases gain heat
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B) Both gases lose heat
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C) Gas A loses heat to gas B
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D) Gas B loses heat to gas A
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A spider can tell when its web has captured, say, a fly because the fly’s thrashing causes the web threads to oscillate. A spider can even determine the size of the fly by the frequency of the oscillations. Assume that a fly oscillates on the capture thread on which it is caught like a block on a spring.

What is the ratio of oscillation frequency for a fly with mass m to a fly with mass 4m?

AKU Practice Mock 1
Physics
A) 1
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B) 2
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C) 4
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D) 8
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A child stands between two mirrors with his arms out, perpendicular to the mirrors. One plane mirror is 5 m away from his left hand and another plane mirror is 7 m away from his right hand. How far apart are the two images produced by the mirrors if the child has an arm span of 0.5 m?

AKU Practice Mock 1
Physics
A) 2 m
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B) 12 m
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C) 12.5 m
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D) 24.5 m
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A man can either take an escalator or a lift to travel up between two floors in a hotel. The escalator takes 20 seconds to carry the man between the two floors. The useful work done against gravity is W. The useful power developed is P. The lift takes 30 seconds to carry the same man between the same two floors.

How much useful work against gravity is done by the lift, and how much useful power is developed by the lift?

AKU Practice Mock 1
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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Three resistances P, Q, R each of 2Ω and an unknown resistance S form the four arms of a Wheatstone’s bridge circuit. When a resistance of 6Ω is connected in parallel to S the bridge gets balanced. This is shown below.

What is the value of S?

AKU Practice Mock 1
Physics
A) 1Ω
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B) 2Ω
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C) 3Ω
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D) 6Ω
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A ball is dropped from a building of height 45 m. At the same time, another ball is thrown up with a speed of 40 m/s. The relative speed of the balls as a function of time is

AKU Practice Mock 1
Physics
A) 0 m/s
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B) 20 m/s
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C) 30 m/s
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D) 40 m/s
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The water in a river is running due west. A boy in a boat tries to cross the river by rowing due south. The motion of the boat relative to the shore is

AKU Practice Mock 1
Physics
A) Due west
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B) Due north
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C) Southwest
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D) Northeast
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An elevator is going up with an upward acceleration of 1 m/s2 . At the instant when its velocity is 2 m/s, a stone is projected upward from its floor with a speed of 2 m/s relative to the elevator, at an elevation of 30o.
If the elevator was moving with a downward acceleration equal to g, how would the motion be altered?

AKU Practice Mock 1
Physics
A) Straight line with respect to the elevator and projectile with respect to the ground
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B) Projectile with respect to the elevator and straight line with respect to the ground.
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C) Projectile with respect to both the elevator and the ground.
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D) Straight line with respect to both the elevator and the ground.
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