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The Darfur conflict began in 2003 in the Darfur region of western Sudan, resulting from tensions between African farmers and Arab nomads. It is considered one of the worst humanitarian crises.

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Electrical Engineering QUESTION #2137

Question 3285

In a balanced three-phase star-connected system, what is the phase relationship between the line voltage $V_L$ and its corresponding phase voltage $V_{ph}$?

$V_L$ leads $V_{ph}$ by $30^\circ$✔️
$V_L$ lags $V_{ph}$ by $30^\circ$
$V_L$ and $V_{ph}$ are in phase
$V_L$ leads $V_{ph}$ by $120^\circ$

Correct Answer Logic:

In a star (Wye) connection, the line voltage is $\sqrt{3}$ times the phase voltage and leads the phase voltage by $30^\circ$.

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Professional QUESTION #1798

Question 3286

Rule 42(b) on 'request for quotations' requires a minimum of how many quotations, and from which category of firms?

Two quotations from any registered firms
Three quotations from GST registered firms, original equipment manufacturers or authorized dealers✔️
Four quotations from SECP registered companies
Three quotations from any suppliers regardless of registration

Correct Answer Logic:

Rule 42(b)(i) and (iii) together require that at least three quotations be obtained from GST registered firms, original equipment manufacturers, or authorized dealers when procurement value exceeds PKR 100,000 but does not exceed PKR 500,000.

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Chemistry QUESTION #1111

Question 3287

The major product of the reaction: PhCOCH$_2$CN $\xrightarrow{\text{(i) excess CH}_3\text{MgBr, (ii) H}_3\text{O}^+}$

Ph–C(CH$_3$)(OH)–CH(OH)–CH$_3$CH$_3$✔️
Ph–CO–CH$_2$–CO–CH$_3$
Ph–C(CH$_3$)(OH)–CH$_2$–CN
Ph–C(CH$_3$)(OH)–CH$_2$–C(CH$_3$)$_2$–OH... no. Product from ketone and nitrile with excess Grignard

Correct Answer Logic:

The compound Ph–CO–CH$_2$–CN has both a ketone and nitrile group. Excess CH$_3$MgBr reacts with: (i) ketone → tertiary alcohol Ph–C(CH$_3$)(OH)–CH$_2$–CN. (ii) nitrile → imine → after H$_3$O$^+$ → ketone... with excess Grignard, the ketone from nitrile hydrolysis reacts again → Ph–C(CH$_3$)(OH)–CH$_2$–C(CH$_3$)$_2$(OH). But since the CN converts via Grignard to imine then hydrolysis gives ketone which reacts with another Grignard. Final: Ph–C(OH)(CH$_3$)–CH$_2$–C(OH)(CH$_3$)$_2$ = option (1) structure with two OH groups.

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English QUESTION #664

Question 3288

In Pygmalion, who was enchanted by ELIZA upon first social meeting?

Pickering
Higgins
Freddy✔️
Mrs. Pearce

Correct Answer Logic:

Freddy Eynsford-Hill becomes instantly smitten with Eliza during her first "test" at Mrs. Higgins' home.

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Basic Mathematics QUESTION #4525

Question 3289

If $2 < x < 5$, what are possible values of $x$?

$x = 2$ or $x = 5$
$2 < x$ and $x < 5$✔️
$x \leq 2$ or $x \geq 5$
$x = 3.5$ only

Correct Answer Logic:

$2 < x < 5$ means $x$ is greater than $2$ AND less than $5$, so any value between $2$ and $5$ (exclusive)

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Reading and Writing (Module-1) QUESTION #5420

Question 3290

While researching a topic, a student has taken the following notes: • Chemical leavening agents cause carbon dioxide to be released within a liquid batter, making the batter rise as it bakes. • Baking soda and baking powder are chemical leavening agents. • Baking soda is pure sodium bicarbonate. • To produce carbon dioxide, baking soda needs to be mixed with liquid and an acidic ingredient such as honey. • Baking powder is a mixture of sodium bicarbonate and an acid. • To produce carbon dioxide, baking powder needs to be mixed with liquid but not with an acidic ingredient. The student wants to emphasize a difference between baking soda and baking powder. Which choice most effectively uses relevant information from the notes to accomplish this goal?

To make batters rise, bakers use chemical leavening agents such as baking soda and baking powder.
Baking soda and baking powder are chemical leavening agents that, when mixed with other ingredients, cause carbon dioxide to be released within a batter.
Baking soda is pure sodium bicarbonate, and honey is a type of acidic ingredient.
To produce carbon dioxide within a liquid batter, baking soda needs to be mixed with an acidic ingredient, whereas baking powder does not.✔️

Correct Answer Logic:

This choice directly contrasts the key difference: baking soda requires an acidic ingredient while baking powder doesn't.

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Biology QUESTION #4207

Question 3291

A confirmed COVID patient shows weak specific immunity. Which component is most likely deficient in this patient?

Red Blood Cells
Helper T-Lymphocytes✔️
Thrombocytes
Suppressor T-Lymphocytes

Correct Answer Logic:

Helper T-lymphocytes coordinate specific immune responses.

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Urdu QUESTION #5043

Question 3292

پاکستان کا قومی ترانہ حفیظ جالندھری کی کس کتاب میں شامل ہے؟

روشن چراغ
چراغِ عصر
چراغِ سحر✔️
ان میں سے کوئی نہیں

Correct Answer Logic:

قومی ترانہ حفیظ جالندھری نے لکھا۔ یہ ان کی کتاب 'چراغِ سحر' میں شامل ہے۔

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English QUESTION #495

Question 3293

Then he sat down in corner and remained queit.

Then he sat down in corner and remained queit.
Then he sat down in corner and remained quite.
Then he sat down in corner and remain quiet.
Then he sat down in corner and remained quiet.✔️

Correct Answer Logic:

Correct spelling: 'quiet'

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Library Sciences QUESTION #1520

Question 3294

HEC National Digital Library (NDL) of Pakistan primarily serves which purpose in an academic context?

Providing free physical textbooks to students
Offering Pakistani university students and faculty access to international e-journals and databases✔️
Archiving rare Urdu manuscripts
Cataloguing government publications

Correct Answer Logic:

The HEC NDL provides Pakistani higher education institutions with subsidized access to thousands of international peer-reviewed e-journals, e-books, and research databases, enabling academic research without the cost burden on individual institutions.

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Library Sciences QUESTION #1537

Question 3295

Which management theory, associated with Frederick Winslow Taylor, emphasized scientific analysis of work tasks to maximize efficiency and is sometimes criticized for treating workers as machines?

Human Relations Theory
Systems Theory
Scientific Management Theory✔️
Contingency Theory

Correct Answer Logic:

Scientific Management (Taylorism) focused on analyzing and optimizing work processes through time-and-motion studies to maximize efficiency. Stueart & Moran (2007) note its limited applicability to library settings due to its mechanistic view of workers, which ignores motivation and job satisfaction.

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Chemistry QUESTION #446

Question 3296

Alkanes containing __________ carbon atoms are waxy solids.

up to 4
5 to 17
18 or more✔️
None of these

Correct Answer Logic:

Alkanes with 18+ carbons are waxy solids

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Mathematics QUESTION #4113

Question 3297

Let $\varphi: \mathbb{Z}_6 \to \mathbb{Z}_6$ be a group homomorphism. If $\varphi$ is one-to-one (injective), what is $|\ker(\varphi)|$?

$0$
$1$✔️
$6$
$\text{Not determined}$

Correct Answer Logic:

For injective homomorphism, kernel contains only identity element. So $|\ker(\varphi)| = 1$.

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English QUESTION #2736

Question 3298

Convert to PASSIVE VOICE: 'Will they announce the result?'

Will the result be announced by them?✔️
Will the result announced by them?
The result will be announced.
Was the result announced by them?

Correct Answer Logic:

In passive voice for future simple questions: Will + object + be + past participle + by + agent. 'Will the result be announced by them?' is correct.

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Federal Rules of Evidence (US) QUESTION #3784

Question 3299

In a civil case, the court takes 'judicial notice' of the fact that it was raining in the city on July 4th, 2023, based on certified weather records. The court instructs the jury that they 'must accept this fact as conclusive.' Is this instruction proper?

No, in civil cases, the jury has the discretion to reject judicially noticed facts.
Yes, in civil cases, the court must instruct the jury to accept a judicially noticed fact as conclusive under Rule 201(f).✔️
No, judicial notice is only for 'law,' not 'facts.'
Yes, but only if the parties stipulated to the fact beforehand.

Correct Answer Logic:

Rule 201(f) states that in a civil action, the court must instruct the jury to accept the noticed fact as conclusive. In a criminal case, however, the court must instruct the jury that it *may or may not* accept the fact as conclusive.

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MCQs Section QUESTION #4848

Question 3300

Choose the word nearly similar in meaning to "SAMIZDAT"

Underground press✔️
Secret police
Twirling jig
Large metal tea urn

Correct Answer Logic:

Samizdat was the clandestine copying and distribution of banned literature in the Soviet Union. It literally means 'self-published' and refers to an underground press.

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