EmSAT Achieve Exam — Questions and Answers

Question 1: Which word is an example of a homophone for 'their'?

There (Correct answer)
That
These
The

Correct answer: There

'There' sounds the same as 'their' but has different spelling and meaning (location vs. possession). Homophones are words that sound alike but differ in meaning and spelling.

Question 2: What is the rate of a chemical reaction?

The energy released
The pressure during reaction
The change in temperature
The change in concentration of reactants/products per unit time (Correct answer)

Correct answer: The change in concentration of reactants/products per unit time

Reaction rate is defined as the change in concentration of reactants or products per unit time. It tells us how quickly a reaction proceeds.

Question 3: Which rhetorical device is used in: 'The classroom was a battlefield of competing ideas'?

Metaphor (Correct answer)
Anaphora
Onomatopoeia
Hyperbole

Correct answer: Metaphor

A metaphor directly equates one thing to another without using 'like' or 'as'; the classroom is called a battlefield.

Question 4: What is the role of tRNA in protein synthesis?

Synthesizes new DNA strands
Brings the correct amino acid to the ribosome during translation (Correct answer)
Unzips the DNA double helix
Carries the genetic code from nucleus to ribosome

Correct answer: Brings the correct amino acid to the ribosome during translation

Transfer RNA (tRNA) carries specific amino acids to the ribosome during translation. Each tRNA has an anticodon that pairs with the corresponding mRNA codon, ensuring the correct amino acid is added.

Question 5: Which word best replaces 'said' to show excitement?

Stated
Mumbled
Exclaimed (Correct answer)
Whispered

Correct answer: Exclaimed

'Exclaimed' conveys excitement or strong emotion. It is a more precise and vivid verb than 'said' when the speaker is excited or surprised.

Question 6: What is the unit of force in the SI system?

Watt
Pascal
Newton (Correct answer)
Joule

Correct answer: Newton

The SI unit of force is the Newton (N), defined as the force needed to accelerate a 1 kg mass at 1 m/s². It is named after Isaac Newton.

Question 7: What is the function of the heart?

To exchange gases
To produce blood cells
To filter blood
To pump blood through the circulatory system (Correct answer)

Correct answer: To pump blood through the circulatory system

The heart is a muscular pump that circulates blood throughout the body. It delivers oxygen and nutrients to tissues and removes waste products via the circulatory system.

Question 8: Find the limit: lim(x→2) (x² − 4)/(x − 2)

0
Undefined
2
4 (Correct answer)

Correct answer: 4

Factor the numerator: x² − 4 = (x+2)(x−2). Cancel (x−2): the limit becomes lim(x→2)(x+2) = 4.

Question 9: In an electrochemical cell, oxidation occurs at the:

Salt bridge
External circuit wire
Cathode
Anode (Correct answer)

Correct answer: Anode

Oxidation is the loss of electrons, and this always occurs at the anode of an electrochemical cell.

Question 10: What does the prefix 'mis-' mean in the word 'misunderstand'?

Wrongly (Correct answer)
Again
Against
Before

Correct answer: Wrongly

The prefix 'mis-' means wrongly or incorrectly. 'Misunderstand' means to understand something incorrectly.

Question 11: Which word is a synonym for 'abundant'?

Limited
Plentiful (Correct answer)
Scarce
Rare

Correct answer: Plentiful

'Abundant' means existing in large quantities. 'Plentiful' is a direct synonym, also meaning available in large amounts.

Question 12: What is a redox reaction?

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

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 13: Choose the correctly spelled word.

Acommodation
Accomadation
Accommodation (Correct answer)
Accomodation

Correct answer: Accommodation

'Accommodation' is spelled with double 'c' and double 'm': A-C-C-O-M-M-O-D-A-T-I-O-N. It is one of the most commonly misspelled words in English.

Question 14: What is an endothermic reaction?

A reaction that releases heat
A reaction that produces light
A reaction that absorbs heat from the surroundings (Correct answer)
A reaction with no energy change

Correct answer: A reaction that absorbs heat from the surroundings

An endothermic reaction absorbs heat energy from the surroundings. The products have higher energy than the reactants, and the enthalpy change (ΔH) is positive.

Question 15: What is the role of chlorophyll?

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

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 16: A triangle has vertices A(0,0), B(6,0), and C(3,4). What is its area?

8
12 (Correct answer)
10
24

Correct answer: 12

Area = ½ × base × height = ½ × 6 × 4 = 12 square units.

Question 17: Which network topology connects all devices to a single central hub?

Bus topology
Ring topology
Star topology (Correct answer)
Mesh topology

Correct answer: Star topology

In a star topology, all devices connect to a central hub or switch. If the central device fails, the entire network is affected, but individual device failures do not affect others.

Question 18: What is tan(45°)?

1 (Correct answer)
√3
0
1/2

Correct answer: 1

tan(45°) = sin(45°)/cos(45°) = (√2/2)/(√2/2) = 1. In a 45-45-90 triangle, both legs are equal, so the ratio is 1.

Question 19: What does Le Chatelier's principle predict when pressure is increased on the equilibrium N₂(g) + 3H₂(g) ⇌ 2NH₃(g)?

Equilibrium shifts left, producing more N₂ and H₂
Kc increases
Equilibrium shifts right, producing more NH₃ (Correct answer)
Equilibrium is unaffected

Correct answer: Equilibrium shifts right, producing more NH₃

Increasing pressure shifts equilibrium toward the side with fewer moles of gas; the right side has 2 moles vs. 4 on the left, so more NH₃ is produced.

Question 20: What is the role of antibodies?

To regulate body temperature
To identify and neutralize specific antigens (Correct answer)
To produce more white blood cells
To carry oxygen

Correct answer: To identify and neutralize specific antigens

Antibodies (immunoglobulins) are proteins produced by B cells that specifically bind to antigens, neutralizing pathogens or marking them for destruction by other immune cells.

Question 21: In EmSAT English, which sentence uses the correct form of the comparative adjective?

She is most tall than her sister.
She is the tallest than her sister.
She is more taller than her sister.
She is taller than her sister. (Correct answer)

Correct answer: She is taller than her sister.

For one-syllable adjectives like 'tall,' the comparative form is 'taller,' not 'more taller' (which is a double comparative error).

Question 22: Which data structure operates on a Last-In, First-Out (LIFO) principle?

Linked list
Queue
Array
Stack (Correct answer)

Correct answer: Stack

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

Question 23: What is 'التنوين' in Arabic?

The plural form
The nunation (double vowel sound at end of indefinite nouns) (Correct answer)
The dual suffix
The definite article

Correct answer: The nunation (double vowel sound at end of indefinite nouns)

التنوين (tanwin) is the nunation — the doubling of a short vowel at the end of indefinite nouns in Arabic, producing a 'n' sound (e.g., كتابٌ kitaabun, كتابًا kitaaban, كتابٍ kitaabin).

Question 24: What is 'النعت' (an-na't) in Arabic grammar?

The adjective/qualifier (Correct answer)
The verb
The subject
The preposition

Correct answer: The adjective/qualifier

النعت (also called الصفة) is the adjective in Arabic grammar. It must agree with its modified noun in gender, number, case, and definiteness. For example: 'الكتابُ الجديدُ' (the new book).

Question 25: If f(x) = 2x² − 3, what is f(3)?

9
12
15 (Correct answer)
21

Correct answer: 15

f(3) = 2(3)² − 3 = 2(9) − 3 = 18 − 3 = 15.

Question 26: What is the solution set of the inequality 2x - 5 > 7?

x > 6 (Correct answer)
x > 1
x < 6
x > 12

Correct answer: x > 6

2x - 5 > 7: add 5 to both sides → 2x > 12, divide by 2 → x > 6.

Question 27: In an ecosystem, what term is given to organisms such as plants that produce their own organic food from inorganic materials?

Parasites
Consumers
Decomposers
Producers (Correct answer)

Correct answer: Producers

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

Question 28: In the sentence 'She barely had time to prepare; _____, her presentation was excellent,' which connective is most appropriate?

furthermore
similarly
therefore
nevertheless (Correct answer)

Correct answer: nevertheless

'Nevertheless' signals contrast — despite limited preparation, the outcome was positive.

Question 29: What is the output of the following pseudocode: x = 5; y = 3; PRINT x + y * 2?

11 (Correct answer)
8
16
13

Correct answer: 11

Following order of operations (multiplication before addition): y * 2 = 6, then x + 6 = 5 + 6 = 11.

Question 30: What is the correct form of the verb 'كتب' for 'she wrote'?

كتبتْ (Correct answer)
تكتبُ
كتبوا
كتبَ

Correct answer: كتبتْ

In Arabic, 'كتبَ' means 'he wrote' (masculine), while 'كتبتْ' means 'she wrote' (feminine). The feminine past tense is formed by adding تْ to the verb.

Question 31: What is the plural form (جمع) of the Arabic word 'كتاب' (book)?

كاتبون
كُتُب (Correct answer)
كتابات
مكتبات

Correct answer: كُتُب

The plural of كتاب is كُتُب, which is a broken plural (جمع تكسير). Arabic has both sound plurals and broken plurals that follow different patterns.

Question 32: What is the output of the expression: 17 MOD 5?

2 (Correct answer)
4
1
3

Correct answer: 2

17 divided by 5 gives quotient 3 and remainder 2, so 17 MOD 5 = 2.

Question 33: What is the root (الجذر) of the word 'كاتب' (writer)?

ك-ت-ب (Correct answer)
ك-ا-ت
ا-ت-ب
ك-ا-ب

Correct answer: ك-ت-ب

Arabic words are built on three-letter (or sometimes four-letter) roots. The root of 'كاتب' (writer) is ك-ت-ب (k-t-b), which relates to writing. Other words from this root: كتب (books), كتابة (writing), مكتبة (library).

Question 34: What does E = mc² represent?

Mass-energy equivalence (Correct answer)
Kinetic energy formula
Momentum conservation
Electric field formula

Correct answer: Mass-energy equivalence

Einstein's famous equation E = mc² expresses mass-energy equivalence: mass (m) can be converted to energy (E), and vice versa. c is the speed of light, making even small masses equivalent to enormous energy.

Question 35: What does the area under a velocity-time graph represent?

Acceleration
Distance (Correct answer)
Speed
Force

Correct answer: Distance

The area under a velocity-time graph represents the displacement (distance traveled). This is derived from the relationship: distance = velocity × time.

Question 36: What is the purpose of a compiler in programming?

To debug runtime errors automatically
To execute code line by line
To translate high-level source code into machine code (Correct answer)
To manage memory allocation

Correct answer: To translate high-level source code into machine code

A compiler translates an entire high-level language program into machine code before execution.

Question 37: A population of bacteria doubles every 20 minutes. Starting with 100 bacteria, how many will there be after 1 hour?

400
800 (Correct answer)
1000
600

Correct answer: 800

After 1 hour (3 doubling periods): 100 × 2³ = 100 × 8 = 800 bacteria.

Question 38: What does Le Chatelier's principle state?

Reactions always go to completion
A system at equilibrium will shift to counteract a stress applied to it (Correct answer)
Equilibrium means equal concentrations of all species
Temperature has no effect on equilibrium

Correct answer: A system at equilibrium will shift to counteract a stress applied to it

Le Chatelier's principle states that if a stress (change in concentration, temperature, or pressure) is applied to a system at equilibrium, the system will shift in the direction that partially counteracts that stress.

Question 39: What does Charles's Law state?

Volume and moles are directly proportional
Volume and temperature are directly proportional at constant pressure (Correct answer)
Pressure and temperature are directly proportional
Pressure and volume are inversely proportional

Correct answer: Volume and temperature are directly proportional at constant pressure

Charles's Law states that at constant pressure, the volume of a gas is directly proportional to its absolute temperature (in Kelvin): V/T = constant.

Question 40: What is the formula for kinetic energy?

KE = mgh
KE = mv
KE = Fd
KE = ½mv² (Correct answer)

Correct answer: KE = ½mv²

Kinetic energy is KE = ½mv², where m is mass (kg) and v is velocity (m/s). It is the energy an object possesses due to its motion.

Question 41: In a right triangle, if one leg is 3 and the other is 4, what is the hypotenuse?

5 (Correct answer)
25
7
6

Correct answer: 5

Using the Pythagorean theorem: c² = 3² + 4² = 9 + 16 = 25, so c = 5. This is the classic 3-4-5 right triangle.

Question 42: How many bytes are in 1 Kilobyte (KB)?

1024 (Correct answer)
1000
100
512

Correct answer: 1024

In computing, 1 Kilobyte = 2^10 = 1024 bytes.

Question 43: Which hormone, produced by the pancreas, is responsible for lowering blood glucose levels after a meal?

Thyroxine
Adrenaline
Insulin (Correct answer)
Cortisol

Correct answer: Insulin

Insulin, secreted by beta cells of the pancreatic islets, promotes glucose uptake by cells and glycogen storage, lowering blood glucose.

Question 44: Which of the following is an example of the imperative mood (الأمر) in Arabic?

كاتبٌ
كتبَ
يكتبُ
اكتبْ (Correct answer)

Correct answer: اكتبْ

'اكتبْ' is the imperative form meaning 'Write!' The imperative (الأمر) is used to give commands and is derived from the present tense verb form.

Question 45: Which of the following is a feature of Formal Modern Standard Arabic (الفصحى) used in official Emirati contexts?

Verb-subject-object sentence order only
Use of colloquial dialect words
Strict adherence to إعراب (case endings) (Correct answer)
Omission of dual grammatical forms

Correct answer: Strict adherence to إعراب (case endings)

الفصحى is characterized by strict إعراب — the system of case endings that mark grammatical roles of nouns and adjectives.

Question 46: Which sentence demonstrates correct agreement between subject and predicate in a nominal sentence (جملة اسمية)?

الطالباتُ مجتهدٌ
الطالباتُ مجتهداً
الطالباتُ مجتهدونَ
الطالباتُ مجتهداتٌ (Correct answer)

Correct answer: الطالباتُ مجتهداتٌ

In a nominal sentence, the predicate (خبر) must agree with the subject in gender and number; 'مجتهداتٌ' correctly agrees with the feminine plural 'الطالباتُ'.

Question 47: If two angles of a triangle are 60° and 80°, what is the third angle?

30°
60°
20°
40° (Correct answer)

Correct answer: 40°

The sum of angles in a triangle is 180°. Third angle = 180° − 60° − 80° = 40°.

Question 48: Which of the following words contains 'همزة القطع' (hamzat al-qat')?

ابن
اتصل
اسم
أكل (Correct answer)

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 49: What is the oxidation state of sulfur in H₂SO₄?

+4
-2
+6 (Correct answer)
+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 50: Which transition word best shows contrast?

However (Correct answer)
Furthermore
Similarly
Therefore

Correct answer: However

'However' signals a contrast or opposing idea between two statements. Words like 'furthermore' and 'similarly' show addition or comparison, not contrast.

Question 51: What is the slope of the line passing through points (2, 3) and (6, 11)?

1
2 (Correct answer)
4
8

Correct answer: 2

Slope = (y2 - y1) / (x2 - x1) = (11 - 3) / (6 - 2) = 8 / 4 = 2.

Question 52: What is ∫2x dx?

x² + C (Correct answer)
2
x + C
2x² + C

Correct answer: x² + C

The integral of 2x is x² + C. Using the power rule for integration: ∫xⁿ dx = xⁿ⁺¹/(n+1) + C, so ∫2x dx = 2 · x²/2 + C = x² + C.

Question 53: Which organelle is responsible for modifying, sorting, and packaging proteins for secretion?

Lysosome
Golgi apparatus (Correct answer)
Peroxisome
Rough endoplasmic reticulum

Correct answer: Golgi apparatus

The Golgi apparatus receives proteins from the ER, modifies them, and packages them into vesicles for export or delivery to other organelles.

Question 54: What is the relationship between wavelength and frequency for electromagnetic waves?

They are inversely proportional (wavelength × frequency = speed of light) (Correct answer)
There is no relationship
They are directly proportional
They are equal

Correct answer: They are inversely proportional (wavelength × frequency = speed of light)

For electromagnetic waves, c = λf, where c is the speed of light (constant). As frequency increases, wavelength decreases proportionally, making them inversely proportional.

Question 55: What converts electrical energy to mechanical energy?

Resistor
Transformer
Electric motor (Correct answer)
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 56: Which word best completes the sentence? 'The scientist's findings were _____, challenging decades of accepted theory.'

trivial
ambiguous
groundbreaking (Correct answer)
redundant

Correct answer: groundbreaking

'Groundbreaking' means innovative and revolutionary, fitting findings that challenge established theory.

Question 57: Which gas law relates pressure and temperature at constant volume?

Charles's Law
Boyle's Law
Avogadro's Law
Gay-Lussac's Law (Correct answer)

Correct answer: Gay-Lussac's Law

Gay-Lussac's Law states that at constant volume, the pressure of a gas is directly proportional to its absolute temperature: P/T = constant.

Question 58: 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-third (Correct answer)
Current is reduced to one-ninth

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 59: What type of energy transformation occurs in a solar panel?

Kinetic to thermal
Chemical to kinetic
Light (radiant) to electrical (Correct answer)
Nuclear to thermal

Correct answer: Light (radiant) to electrical

Solar panels (photovoltaic cells) convert light energy (electromagnetic radiation from the sun) into electrical energy through the photovoltaic effect.

Question 60: Which option correctly identifies the underlined word in: 'She arrived late, which disrupted the meeting.'

Indefinite pronoun
Relative pronoun referring to 'she'
Relative pronoun referring to the entire preceding clause (Correct answer)
Relative pronoun referring to 'late'

Correct answer: Relative pronoun referring to the entire preceding clause

'Which' here is a relative pronoun referring to the whole idea expressed in the main clause, not a single noun.

Question 61: Which sentence demonstrates correct use of a colon?

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

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 62: Which data structure follows the Last-In, First-Out (LIFO) principle?

Linked List
Binary Tree
Queue
Stack (Correct answer)

Correct answer: Stack

A stack operates on the LIFO principle — the last element pushed onto the stack is the first one to be popped off. A queue uses FIFO (First-In, First-Out) instead.

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

Time Limit

55%

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