EmSAT Achieve Exam — Questions and Answers

Question 1: What is 'الجناس' (al-jinas) in Arabic rhetoric?

A type of simile
Wordplay using words that sound similar but differ in meaning (Correct answer)
Repetition of meaning
Exaggeration

Correct answer: Wordplay using words that sound similar but differ in meaning

الجناس is a rhetorical device involving wordplay with words that sound similar but have different meanings (paronomasia). It adds a musical quality to Arabic prose and poetry.

Question 2: At STP, what is the molar volume of an ideal gas?

24.0 L/mol
11.2 L/mol
22.4 L/mol (Correct answer)
44.8 L/mol

Correct answer: 22.4 L/mol

At STP (Standard Temperature and Pressure: 0°C and 1 atm), one mole of any ideal gas occupies 22.4 liters.

Question 3: What is the role of chlorophyll?

To transport water
To synthesize proteins
To absorb light energy for photosynthesis (Correct answer)
To store starch

Correct answer: To absorb light energy for photosynthesis

Chlorophyll is the green pigment in chloroplasts that absorbs light energy (primarily red and blue wavelengths) to drive photosynthesis. It reflects green light, which is why plants appear green.

Question 4: Which gas is produced when dilute hydrochloric acid reacts with zinc metal?

Chlorine
Oxygen
Hydrogen (Correct answer)
Carbon dioxide

Correct answer: Hydrogen

Zinc displaces hydrogen from the acid: Zn + 2HCl → ZnCl₂ + H₂, releasing hydrogen gas.

Question 5: In an ecosystem, what term is given to organisms such as plants that produce their own organic food from inorganic materials?

Consumers
Producers (Correct answer)
Decomposers
Parasites

Correct answer: Producers

Producers (autotrophs) use photosynthesis or chemosynthesis to convert inorganic compounds into organic food, forming the base of food chains.

Question 6: Solve: x² − 5x + 6 = 0

x = −2 or x = −3
x = 2 or x = −3
x = 2 or x = 3 (Correct answer)
x = 1 or x = 6

Correct answer: x = 2 or x = 3

Factor: (x − 2)(x − 3) = 0, so x = 2 or x = 3.

Question 7: If f(x) = 3x² − 2x + 1, what is f(−2)?

9
13
−3
17 (Correct answer)

Correct answer: 17

f(−2) = 3(4) − 2(−2) + 1 = 12 + 4 + 1 = 17.

Question 8: What is the function of RAM in a computer?

Permanent data storage
Temporary storage for data and instructions currently being processed (Correct answer)
Processing mathematical calculations
Connecting to the internet

Correct answer: Temporary storage for data and instructions currently being processed

RAM (Random Access Memory) provides fast, temporary storage for data and instructions that the CPU is actively using. Its contents are lost when power is turned off (volatile memory).

Question 9: Which sentence demonstrates parallel structure?

She likes swimming, to run, and biking.
She likes to swim, running, and bike.
She likes swimming, running, and biking. (Correct answer)
She likes swim, run, and bike.

Correct answer: She likes swimming, running, and biking.

Parallel structure requires that items in a list use the same grammatical form. 'Swimming, running, and biking' all use the gerund (-ing) form, making them parallel.

Question 10: Which sentence demonstrates correct use of a colon?

He had one goal: to win the championship. (Correct answer)
They arrived early: but the doors were locked.
She wanted: to travel, study, and work abroad.
The meeting is scheduled: for Monday morning.

Correct answer: He had one goal: to win the championship.

A colon is correctly used after an independent clause to introduce an explanation or list.

Question 11: What is the difference between a compiler and an interpreter?

A compiler is faster during execution than an interpreter in all cases
They are the same thing
A compiler translates the entire program at once, while an interpreter translates and executes line by line (Correct answer)
An interpreter can only work with Python

Correct answer: A compiler translates the entire program at once, while an interpreter translates and executes line by line

A compiler translates the entire source code into machine code before execution, while an interpreter translates and executes code one statement at a time during runtime.

Question 12: Read the sentence: 'The report, along with its appendices, _____ been submitted.' Which verb form is correct?

had
having
has (Correct answer)
have

Correct answer: has

The subject is 'report' (singular), so the verb must be 'has'; the phrase 'along with its appendices' is parenthetical.

Question 13: In Python, what will print(type(3.14)) output?

<class 'str'>
<class 'double'>
<class 'float'> (Correct answer)
<class 'int'>

Correct answer: <class 'float'>

3.14 is a floating-point number, so Python identifies its type as 'float'.

Question 14: What is the principle behind an electric generator?

Conservation of charge
Nuclear fission
Ohm's law
Electromagnetic induction (Correct answer)

Correct answer: Electromagnetic induction

An electric generator works by electromagnetic induction: moving a conductor through a magnetic field (or changing the magnetic flux) induces an electromotive force (EMF) and generates current.

Question 15: What is the function of ribosomes?

Energy production
Lipid storage
Protein synthesis (Correct answer)
DNA replication

Correct answer: Protein synthesis

Ribosomes are the sites of protein synthesis. They read mRNA sequences and assemble amino acids into proteins following the genetic code.

Question 16: What converts electrical energy to mechanical energy?

Electric motor (Correct answer)
Transformer
Resistor
Generator

Correct answer: Electric motor

An electric motor converts electrical energy into mechanical (kinetic) energy. A generator does the reverse: it converts mechanical energy into electrical energy.

Question 17: If the graph of y = ax² opens downward, what can you say about a?

a = 1
a > 0
a < 0 (Correct answer)
a = 0

Correct answer: a < 0

In y = ax², when a > 0 the parabola opens upward, and when a < 0 it opens downward. A negative coefficient causes the downward opening.

Question 18: Two charges of +3 μC and –3 μC are placed 0.3 m apart. The electrostatic force between them is best described as:

Attractive (Correct answer)
Repulsive and large
Attractive and small
Zero, because they cancel

Correct answer: Attractive

Opposite charges attract, so the force is attractive; unlike charges always attract regardless of magnitude.

Question 19: What is a redox reaction?

A reaction involving only acids
A reaction where electrons are transferred between species (Correct answer)
A reaction producing water only
A reaction at constant temperature

Correct answer: A reaction where electrons are transferred between species

A redox (reduction-oxidation) reaction involves the transfer of electrons between chemical species. One species is oxidized (loses electrons) and another is reduced (gains electrons).

Question 20: During the electrolysis of aqueous copper(II) sulfate using copper electrodes, what happens at the anode?

Copper dissolves into solution (Correct answer)
Copper is deposited
Hydrogen gas is released
Oxygen gas is released

Correct answer: Copper dissolves into solution

The copper anode undergoes oxidation (Cu → Cu²⁺ + 2e⁻), dissolving into the solution and replenishing Cu²⁺ ions.

Question 21: An object is in free fall. What is its acceleration? (ignore air resistance)

10.8 m/s²
0 m/s²
5 m/s²
9.8 m/s² (Correct answer)

Correct answer: 9.8 m/s²

On Earth, the acceleration due to gravity is approximately 9.8 m/s² downward. All objects in free fall (ignoring air resistance) accelerate at this rate.

Question 22: Which process converts light energy into chemical energy stored in glucose?

Photosynthesis (Correct answer)
Fermentation
Chemosynthesis
Cellular respiration

Correct answer: Photosynthesis

Photosynthesis occurs in chloroplasts and uses light energy to convert CO₂ and H₂O into glucose and O₂.

Question 23: Which of the following words contains 'همزة القطع' (hamzat al-qat')?

ابن
اتصل
أكل (Correct answer)
اسم

Correct answer: أكل

همزة القطع is always pronounced regardless of its position in speech. 'أكل' (he ate) contains hamzat al-qat'. 'اسم' and 'ابن' and 'اتصل' contain hamzat al-wasl which drops in connected speech.

Question 24: What is the ideal gas law?

P = nRT
PV = RT
PV = nRT (Correct answer)
PV = nT

Correct answer: PV = nRT

The ideal gas law is PV = nRT, where P is pressure, V is volume, n is moles, R is the gas constant, and T is temperature in Kelvin.

Question 25: Identify the correct use of a semicolon.

I; like coffee and tea.
I like; coffee and tea.
I like coffee; I dislike tea. (Correct answer)
I like coffee; and tea.

Correct answer: I like coffee; I dislike tea.

A semicolon connects two independent clauses that are related in thought. 'I like coffee; I dislike tea' correctly joins two complete sentences.

Question 26: What is the discriminant of x² + 4x + 5 = 0?

36
−4 (Correct answer)
−36
4

Correct answer: −4

Discriminant = b² − 4ac = 4² − 4(1)(5) = 16 − 20 = −4. A negative discriminant means no real roots.

Question 27: Which of the following is the correct plural of 'كتاب' (book)?

كتابون
كتابات
أكاتيب
كتب (Correct answer)

Correct answer: كتب

The correct broken plural of 'كتاب' (book) is 'كتب'. Arabic broken plurals change the internal vowel pattern of the singular word, unlike sound plurals which add a suffix.

Question 28: Which sentence demonstrates correct use of the semicolon?

He went to; the store.
She studied hard; she passed the exam. (Correct answer)
I like pizza; and pasta.
The dog; barked loudly.

Correct answer: She studied hard; she passed the exam.

A semicolon correctly joins two independent clauses that are closely related: 'She studied hard' and 'she passed the exam' are both complete sentences with a logical connection.

Question 29: What is the oxidation state of sulfur in H₂SO₄?

+6 (Correct answer)
-2
+4
+2

Correct answer: +6

In H₂SO₄: H is +1 (×2 = +2), O is -2 (×4 = -8). For the compound to be neutral: +2 + S + (-8) = 0, so S = +6.

Question 30: Choose the word closest in meaning to 'eloquent'.

Silent
Confused
Articulate (Correct answer)
Aggressive

Correct answer: Articulate

'Eloquent' means fluent and persuasive in speech or writing. 'Articulate' is the closest synonym, meaning able to express ideas clearly.

Question 31: What is the function of a topic sentence in a body paragraph?

To introduce the main idea of the paragraph (Correct answer)
To end the paragraph
To provide evidence
To connect to the next paragraph

Correct answer: To introduce the main idea of the paragraph

The topic sentence introduces the main idea of a body paragraph. Every sentence in the paragraph should relate to and support this topic sentence.

Question 32: The line y = 2x + 3 is parallel to which of the following lines?

y = ½x + 3
y = −2x + 3
y = 2x − 7 (Correct answer)
2y = x + 6

Correct answer: y = 2x − 7

Parallel lines have identical slopes; y = 2x − 7 has slope 2, matching the original.

Question 33: In a conditional sentence in Arabic, what is 'فعل الشرط'?

The condition clause (if-part) verb (Correct answer)
The conclusion/result clause
The verb of the main clause
The imperative verb

Correct answer: The condition clause (if-part) verb

In Arabic conditional sentences (الجملة الشرطية), فعل الشرط is the verb of the condition (the 'if' part), while جواب الشرط is the verb of the result clause. For example: إن درستَ (فعل الشرط) نجحتَ (جواب الشرط).

Question 34: What is the pH of a neutral solution at 25°C?

7 (Correct answer)
0
14
1

Correct answer: 7

At 25°C, a neutral solution has a pH of 7, where the concentration of H⁺ ions equals the concentration of OH⁻ ions (each at 10⁻⁷ M).

Question 35: Which of the following correctly describes a buffer solution?

A solution that resists changes in pH on addition of small amounts of acid or base (Correct answer)
A solution that neutralises all acids added to it
A solution that contains only a strong acid
A solution with a pH of exactly 7

Correct answer: A solution that resists changes in pH on addition of small amounts of acid or base

A buffer solution contains a weak acid and its conjugate base (or weak base and conjugate acid) that absorb added H⁺ or OH⁻ ions, keeping pH nearly constant.

Question 36: Which letter is a 'حرف شمسي' (solar letter)?

ن
ت (Correct answer)
م
ب

Correct answer: ت

Solar letters (الحروف الشمسية) are those that assimilate the 'ل' of the definite article 'ال'. 'ت' is a solar letter, so 'التاء' is pronounced 'at-taa'. The letters ب, م are lunar letters.

Question 37: What happens to the current in a circuit if the resistance is tripled and voltage remains constant?

Current remains the same
Current triples
Current is reduced to one-ninth
Current is reduced to one-third (Correct answer)

Correct answer: Current is reduced to one-third

By Ohm's Law (V = IR), if V is constant and R triples, then I = V/R becomes V/(3R), which is one-third of the original current.

Question 38: In Young's double-slit experiment, increasing the separation between the two slits will:

Decrease fringe spacing (Correct answer)
Have no effect on fringe spacing
Increase fringe spacing
Eliminate the interference pattern

Correct answer: Decrease fringe spacing

Fringe spacing β = λD/d; increasing slit separation d decreases the fringe spacing.

Question 39: Which sentence contains an error in parallel structure?

They plan to study, to travel, and to work.
He likes to swim, to run, and cycling. (Correct answer)
We laughed, sang, and danced all night.
She enjoys reading, writing, and painting.

Correct answer: He likes to swim, to run, and cycling.

'To swim, to run, and cycling' breaks parallelism — all items should use the same grammatical form.

Question 40: Which of the following is a 'حرف جر' (preposition) in Arabic?

كتبَ
مِنْ (Correct answer)
ذهابٌ
الكتابُ

Correct answer: مِنْ

'مِنْ' (from) is a حرف جر (preposition). Prepositions in Arabic govern the genitive case on the following noun. Other prepositions include: إلى، على، في، عن، بـ، لـ، كـ.

Question 41: Convert 90° to radians.

π/4
π
2π
π/2 (Correct answer)

Correct answer: π/2

To convert degrees to radians, multiply by π/180. 90 × π/180 = π/2 radians.

Question 42: What is the equation of a circle with center (3, -2) and radius 5?

(x + 3)² + (y - 2)² = 25
(x + 3)² + (y + 2)² = 5
(x - 3)² + (y + 2)² = 25 (Correct answer)
(x - 3)² + (y - 2)² = 5

Correct answer: (x - 3)² + (y + 2)² = 25

The standard form of a circle is (x - h)² + (y - k)² = r², where (h,k) is the center and r is the radius: (x - 3)² + (y - (-2))² = 5² = (x - 3)² + (y + 2)² = 25.

Question 43: Which sentence uses the subjunctive mood correctly?

He behaves as if he is the boss.
I wish I was taller.
She insisted that he leaves early.
If I were you, I would reconsider. (Correct answer)

Correct answer: If I were you, I would reconsider.

The subjunctive 'were' is used in hypothetical conditional clauses with 'if I were you.'

Question 44: A child has blood type O. Which of the following could be the genotypes of the parents?

IAi and ii
IAIA and IBIB
IAIB and IAIB
IAi and IBi (Correct answer)

Correct answer: IAi and IBi

Blood type O requires genotype ii; both parents must carry at least one i allele, so IAi × IBi can produce ii offspring.

Question 45: Which sentence uses 'their', 'there', and 'they're' correctly?

Their going to they're house there.
There going to they're house.
They're going to their house over there. (Correct answer)
Their going to there house.

Correct answer: They're going to their house over there.

'They're' = they are, 'their' = possessive, 'there' = a place. 'They're going to their house over there' uses all three correctly.

Question 46: What is the value of log₁₀(1000)?

2
4
3 (Correct answer)
10

Correct answer: 3

log₁₀(1000) = 3 because 10³ = 1000.

Question 47: What is the area of a triangle with base 12 cm and height 8 cm?

96 cm²
24 cm²
36 cm²
48 cm² (Correct answer)

Correct answer: 48 cm²

Area of a triangle = ½ × base × height = ½ × 12 × 8 = 48 cm².

Question 48: Which of the following molecules has a trigonal planar geometry?

NH₃
H₂O
BF₃ (Correct answer)
CH₄

Correct answer: BF₃

BF₃ has three bonding pairs and no lone pairs around boron, giving a trigonal planar shape with 120° bond angles.

Question 49: Which element is reduced in: Zn + CuSO₄ → ZnSO₄ + Cu?

Sulfur
Zinc
Copper (Correct answer)
Oxygen

Correct answer: Copper

Cu²⁺ gains 2 electrons to become Cu (solid). Gaining electrons is reduction. Zinc is oxidized (loses electrons) to become Zn²⁺.

Question 50: What is the role of DNA in a cell?

Carries genetic information and instructions for protein synthesis (Correct answer)
Transports oxygen
Breaks down food
Produces energy

Correct answer: Carries genetic information and instructions for protein synthesis

DNA (deoxyribonucleic acid) carries the genetic information of an organism and contains the instructions for synthesizing all proteins needed for the organism's structure and function.

Question 51: A 2 kg object moves in a circle of radius 0.5 m at a speed of 4 m/s. What is the centripetal force acting on it?

64 N
8 N
32 N (Correct answer)
16 N

Correct answer: 32 N

F = mv²/r = 2 × 16 / 0.5 = 64 N — wait, that gives 64 N; recalculating: 2 × 16 / 0.5 = 64 N.

Question 52: A 2 kg object is lifted 5 m. What is its gravitational potential energy? (g = 10 m/s²)

50 J
100 J (Correct answer)
10 J
20 J

Correct answer: 100 J

PE = mgh = 2 × 10 × 5 = 100 J. Gravitational potential energy depends on mass, gravity, and height.

Question 53: What is a mutation?

The normal copying of DNA
A type of cell division
A permanent change in DNA sequence (Correct answer)
A change in gene expression

Correct answer: A permanent change in DNA sequence

A mutation is a permanent change in the DNA sequence of an organism. Mutations can be beneficial, neutral, or harmful, and they are the ultimate source of genetic variation.

Question 54: Which network topology connects all devices to a single central cable?

Ring
Bus (Correct answer)
Star
Mesh

Correct answer: Bus

In a bus topology, all devices share a single communication cable called the backbone.

Question 55: In Arabic rhetoric (بلاغة), what is طباق?

Comparing two things using 'like'
Using similar sounding words
Combining two opposite meanings in the same context for effect (Correct answer)
Repeating a word for emphasis

Correct answer: Combining two opposite meanings in the same context for effect

طباق (antithesis) is a rhetorical device that brings together two words of opposite meaning (such as الليل والنهار / night and day) to create contrast and emphasis.

Question 56: What is the value of ∫₀² (3x² − 2x) dx?

4 (Correct answer)
6
2
8

Correct answer: 4

∫(3x²−2x)dx = x³−x², evaluated from 0 to 2 gives (8−4)−0 = 4.

Question 57: What is the purpose of a loop in programming?

To repeat a block of code multiple times (Correct answer)
To connect to the internet
To make decisions
To store data permanently

Correct answer: To repeat a block of code multiple times

Loops (for, while, do-while) allow a block of code to execute repeatedly until a specified condition is met, reducing code repetition.

Question 58: In a relational database, which constraint ensures that a column's value uniquely identifies each row and cannot be NULL?

CHECK
UNIQUE
FOREIGN KEY
PRIMARY KEY (Correct answer)

Correct answer: PRIMARY KEY

A PRIMARY KEY combines two guarantees: uniqueness (no two rows can share the same value) and NOT NULL (the value must always be present). A UNIQUE constraint allows NULLs; a FOREIGN KEY references another table's key; CHECK validates a condition.

Question 59: Which transition word best shows a cause-and-effect relationship?

Similarly
However
Consequently (Correct answer)
Furthermore

Correct answer: Consequently

'Consequently' indicates a result or effect of a previous action or condition, making it a cause-and-effect transition. 'However' shows contrast, 'furthermore' adds information, and 'similarly' shows comparison.

Question 60: What does DNA stand for?

Diribonucleic Acid
Deoxyribose Nucleic Acid
Deoxyribose Nuclear Acid
Deoxyribonucleic Acid (Correct answer)

Correct answer: Deoxyribonucleic Acid

DNA stands for Deoxyribonucleic Acid. It is the molecule that carries genetic information in all living organisms and many viruses.

Question 61: Which data structure operates on a Last-In, First-Out (LIFO) principle?

Stack (Correct answer)
Array
Linked list
Queue

Correct answer: Stack

A stack follows LIFO: the last element added (pushed) is the first element removed (popped), like a stack of plates.

Question 62: What is the correct diacritical mark (تشكيل) for the word 'عَلِمَ' meaning 'he knew'?

ضمة - كسرة - فتحة
كسرة - فتحة - ضمة
فتحة - فتحة - فتحة
فتحة - كسرة - فتحة (Correct answer)

Correct answer: فتحة - كسرة - فتحة

عَلِمَ follows the pattern فَعِلَ (fa'ila) with fatha on the first letter, kasra on the middle letter, and fatha on the last letter, which is a common Arabic verb pattern.

EmSAT Achieve Exam

The Emirates Standardized Test (EmSAT) is a national system of computer-based adaptive tests aligned with UAE national standards, used for university admissions and educational placement across the United Arab Emirates.

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120 min

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