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English QUESTION #2687

Question 2241

Identify the correct modal for 'prohibition': 'You ___ park your car in front of the gate.'

could not
must not✔️
may not
need not

Correct Answer Logic:

'Must not' is used to express a strong prohibition or rule.

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CISA QUESTION #6826

Question 2242

An auditor reviews change control logs and finds that 40% of emergency changes lack proper post-implementation documentation. What is the PRIMARY risk?

Delayed documentation
Inability to support rollback and verify that emergency procedures were followed appropriately✔️
Increased administrative burden
Reduced change velocity

Correct Answer Logic:

Emergency changes still require documentation, though approval may be retroactive. Without post-implementation documentation, there is no evidence that changes were appropriate, no support for rollback if needed, and no way to verify that emergency procedures were followed correctly or that changes achieved intended results.

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Biology QUESTION #4299

Question 2243

Enzymes belong to which class of biomolecules?

Carbohydrates
Lipids
Proteins✔️
Nucleic acids

Correct Answer Logic:

Enzymes are biological catalysts made of proteins (polypeptide chains). Their catalytic activity depends on their specific three-dimensional protein structure.

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Quantitative Reasoning QUESTION #8009

Question 2244

Choose the word pair that best expresses a relationship similar to that of SEDATIVE : DROWSINESS

epidemic : contagiousness
vaccine : virus
laxative : drug
anesthetic : numbness✔️

Correct Answer Logic:

A sedative causes drowsiness (a sedative is a substance that produces drowsiness as its effect). We need a pair where the first item causes or produces the second. Anesthetic : numbness shows the same relationship: an anesthetic causes numbness, just as a sedative causes drowsiness.

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Physics QUESTION #7094

Question 2245

A particle moves in a circle at a constant $10\text{ ms}^{-1}$. What is the magnitude of velocity change after turning $60^{\circ}$?

$10\sqrt{3}\text{ m/s}$
zero
$10\sqrt{2}\text{ m/s}$
$10\text{ m/s}$✔️

Correct Answer Logic:

The magnitude of change in velocity is $|\Delta v| = 2v \sin(\frac{\theta}{2})$.

$|\Delta v| = 2(10) \sin(60^{\circ}/2) = 20 \sin 30^{\circ}$
$|\Delta v| = 20 \times \frac{1}{2} = 10\text{ m/s}$.

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Pharmacokinetics and Pharmacodynamics QUESTION #3835

Question 2246

Which of the following drugs is known to have the longest elimination half-life among those listed?

Amiodarone✔️
Morphine
Verapamil
Amlodipine

Correct Answer Logic:

Amiodarone has an extremely long half-life of $40$–$55$ days due to extensive tissue distribution and very slow elimination.

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Therapeutics and Patient Care QUESTION #3903

Question 2247

What is the standard initial daily starting dose for venlafaxine when initiating treatment for depression or anxiety?

$37.5$ mg daily
$150$ mg daily
$75$ mg daily✔️
$300$ mg daily

Correct Answer Logic:

Venlafaxine is typically initiated at $75$ mg per day ($37.5$ mg twice daily or $75$ mg XR once daily) and titrated as needed up to a maximum of $375$ mg/day.

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Dairy Food Science and Technology QUESTION #5917

Question 2248

In the Gerber method for fat determination, amyl alcohol is added. Its purpose is:

To act as the primary fat solvent
To act as a froth suppressant and to reduce surface tension between the fat and acid layers, facilitating a clear fat column✔️
To digest casein proteins
To calibrate the butyrometer

Correct Answer Logic:

In the Gerber test, amyl alcohol (isoamyl alcohol, $\text{C}_5\text{H}_{12}\text{O}$) serves two purposes: (1) reduces surface tension at the fat-acid interface facilitating complete fat separation; (2) acts as a froth suppressant. Without it, the fat-acid interface is diffuse and difficult to read accurately.

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Accounting & Finance QUESTION #6071

Question 2249

Jamie is launching a new enterprise and has three primary requirements: he wants to receive a salary for managing the business, he desires total ownership, and he must ensure his personal assets are protected from business risks. Which business structure should Jamie select?

Sole trader
Partnership
Private limited company✔️
Public limited company

Correct Answer Logic:

A private limited company offers limited liability, protecting Jamie's personal assets. As a separate legal entity, it allows him to be the sole owner (shareholder) and receive a salary as a director. A sole trader or partnership would have unlimited liability, risking personal assets.

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Pakistan Affairs QUESTION #612

Question 2250

Which Indian plan provided a three-tiered constitutional structure before 1947?

Simon Commission
Crips Commission
Lord Wavell Plan
None of these✔️

Correct Answer Logic:

The Cabinet Mission Plan of 1946 proposed the three-tiered structure (provinces, groups, and center) .

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Math Physics Chemistry Biology QUESTION #749

Question 2251

A completely filled band is called:

Forbidden band
Conduction band
Both
None✔️

Correct Answer Logic:

A completely filled energy band is called the Valence band. Since valence band is not listed the answer is None.

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English QUESTION #2663

Question 2252

Choose the word that has a similar meaning to: 'ABANDON'

Keep
Forsake✔️
Adopt
Protect

Correct Answer Logic:

To 'abandon' means to leave or give up completely; 'forsake' is to desert.

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General Abilities QUESTION #4590

Question 2253

Simplify: $3x + 5x$

$8x$✔️
$15x$
$8x^2$
$3x^2 + 5x$

Correct Answer Logic:

Combine like terms: $3x + 5x = (3+5)x = 8x$

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Chemistry QUESTION #482

Question 2254

__________ are product of reaction of an alcohol and aromatic bi-functional acids.

Acrylic resins
Polyester resins✔️
PVCs
Polyamide resins

Correct Answer Logic:

Polyester resins form from alcohols and dicarboxylic acids

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3472

Question 2255

'Amphipathic' molecules (like phospholipids) have:

Only a water-loving part
Only a water-fearing part
Both hydrophilic and hydrophobic parts✔️
No charge

Correct Answer Logic:

This allows them to form membranes and micelles.

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Islamic Studies QUESTION #7895

Question 2256

What is the total number of Ayaats (verses) in the Holy Quran?

5445
7277
4344
6236✔️

Correct Answer Logic:

The Holy Quran contains 6236 Ayaats (verses) according to the most common count. However, different methods of counting yield slightly different numbers ranging from 6204 to 6236. The Quran has 114 Surahs, 30 Parts (Juz), and approximately 77,000 words.

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Physics QUESTION #1043

Question 2257

Which options represent correct variation of photoelectric current vs. property on x-axis?

A and D✔️
B and D
A only
A and C

Correct Answer Logic:

Photoelectric current vs. intensity: linear (proportional) — Graph A is correct (linear through origin). Photoelectric current vs. frequency: zero below threshold, then increases above — Graph D shows this (starts from threshold). B (flat vs intensity) and C (linear from zero vs frequency) are incorrect. Correct: A and D.

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Reading and Writing (Module-1) QUESTION #5450

Question 2258

When soil is contaminated by toxic metals, it can be removed and landfilled. ____ contaminated soil can be detoxified via phytoremediation.

Alternatively✔️
Specifically
For example
As a result

Correct Answer Logic:

"Alternatively" introduces another option (phytoremediation) as a contrast to landfilling.

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Chemistry QUESTION #1103

Question 2259

Predict major product 'P': cyclopentyl methyl ketone $\xrightarrow{\text{(i) HBr, benzoyl peroxide}}\xrightarrow{\text{(ii) KCN}}\xrightarrow{\text{(iii) Na(Hg)/C}_2\text{H}_5\text{OH}}$ P:

Cyclopentyl group with CH$_3$ and NC substituents
NC–CH(CH$_3$)–cyclopentyl
Cyclopentane ring with CH$_3$ and CH$_2$NH$_2$
Cyclopentane ring with CH$_3$ and CH$_2$NH$_2$ (exocyclic)✔️

Correct Answer Logic:

(i) HBr with peroxide = anti-Markovnikov addition → CH$_2$Br at the end of the methyl chain (allylic/radical). (ii) KCN substitutes Br → –CH$_2$CN. (iii) Na(Hg)/EtOH reduces CN → –CH$_2$NH$_2$. Major product: cyclopentyl group bearing –CH$_3$ transformed to –CH$_2$NH$_2$ substituent = option (4).

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Urdu QUESTION #5167

Question 2260

اقبالِ جرم کس کتاب کا دیباچہ ہے؟

سرخ فیتہ
شہاب نامہ✔️
نفسانے
ان میں سے کوئی نہیں

Correct Answer Logic:

اقبالِ جرم شہاب نامہ کا دیباچہ ہے۔

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