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Increases soil compaction which improves root anchorage
Reduces soil erosion, preserves organic matter, lowers fuel costs, and maintains soil biotic activity✔️
Completely eliminates the need for herbicide application
Increases soil bulk density to improve water retention

Correct Answer Logic:

Minimum tillage (conservation tillage) reduces the number and intensity of tillage operations. This conserves soil structure, reduces erosion, maintains soil organic matter and microbial activity, and significantly reduces labor and fuel costs — central to sustainable crop production.

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Islamic Studies QUESTION #7912

Question 2387

The Ummayyad Caliphate was overthrown in 751 A.D by Abbasids after the:

Battle of Tribes
Battle of Islam
Battle of Arabs
Battle of Zab✔️

Correct Answer Logic:

The Umayyad Caliphate was overthrown at the Battle of Zab in 750 CE (not 751). This battle was fought on the banks of the Great Zab River. The Abbasids, led by Abu al-Abbas, defeated the last Umayyad Caliph Marwan II, establishing the Abbasid Caliphate that lasted until 1258 CE.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3111

Question 2388

'External Respiration' refers to the exchange of gases between:

Blood and tissue cells
Alveoli and blood✔️
Atmosphere and trachea
Mitochondria and cytoplasm

Correct Answer Logic:

External respiration occurs in the lungs; Internal respiration occurs at the tissue level.

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General Knowledge QUESTION #8792

Question 2389

Which line divides the Turkish and Greek Cypriot communities?

Yellow Line
Green Line✔️
Curzon Line
Maginot Line

Correct Answer Logic:

The Green Line divides Cyprus.

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Math (Module-1) QUESTION #5464

Question 2390

For the linear function $f$, the table shows: $x=0, f(x)=29$; $x=1, f(x)=32$; $x=2, f(x)=35$. Which equation defines $f(x)$?

$f(x) = 3x + 29$✔️
$f(x) = 29x + 32$
$f(x) = 35x + 29$
$f(x) = 32x + 35$

Correct Answer Logic:

The slope is $\frac{32-29}{1-0} = 3$ and the $y$-intercept is $29$ ($f(0)=29$).

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General Knowledge QUESTION #4721

Question 2391

What is the official currency of China?

Rouble
Yen
Yuan (Renminbi)✔️
Won

Correct Answer Logic:

The official currency of China is the Renminbi (RMB), with the base unit called the Yuan. The Rouble is Russian, Yen is Japanese, and Won is Korean.

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Law QUESTION #9475

Question 2392

A decree was passed on 15 January 2010. The decree-holder made no application for execution until 15 January 2016. The judgment-debtor raises the bar of limitation. The decree-holder claims he was fraudulently prevented by the judgment-debtor from executing the decree from January 2010 to December 2015. Which legal principle resolves this dispute?

The decree-holder can still execute if he proves that the judgment-debtor, by fraud or force, prevented execution within the six years immediately before the application✔️
The decree becomes a nullity after three years of non-execution
The Court has inherent power to condone the delay regardless of the circumstances
The decree is absolutely barred; no exception exists after six years

Correct Answer Logic:

Section 48(2) CPC creates an exception: where the judgment-debtor has by fraud or force prevented the execution of the decree at some time within six years immediately before the date of the application, the Court may allow execution. The decree-holder must prove the fraudulent prevention occurred within the relevant six-year window.

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Chemistry QUESTION #1436

Question 2393

Which of the following is a common byproduct of the cement manufacturing process?

Sulfur dioxide ($\text{SO}_2$)
Nitrogen oxides ($\text{NO}_x$)
Both (A) and (B)✔️
None of these

Correct Answer Logic:

Cement manufacturing involves burning limestone and other raw materials at very high temperatures (around 1450°C). This process releases both sulfur dioxide ($\text{SO}_2$) from sulfur-containing minerals and nitrogen oxides ($\text{NO}_x$) from high-temperature combustion reactions with atmospheric nitrogen. Both are significant air pollutants contributing to acid rain and smog.

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General Knowledge QUESTION #4724

Question 2394

Biman is the national airline of which country?

Sri Lanka
Nepal
Bangladesh✔️
Myanmar

Correct Answer Logic:

Biman Bangladesh Airlines is the national flag carrier of Bangladesh, established in 1972 after the country's independence.

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Academic/Professional (Social Sciences) QUESTION #6497

Question 2395

The process through which people learn the values and norms of their society is called:

Acculturation
Socialization✔️
Assimilation
Indoctrination

Correct Answer Logic:

Socialization is the lifelong process of inheriting and disseminating norms, customs, and ideologies.

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Physics QUESTION #6994

Question 2396

Four equal point charges $Q$ are placed in the $xy$-plane at positions $(0,2)$, $(4,2)$, $(4,-2)$ and $(0,-2)$ (in metres). What is the work done in bringing a fifth charge $Q$ from infinity to the origin?

$\dfrac{Q^2}{4\pi\varepsilon_0}\left(1 + \dfrac{1}{\sqrt{3}}\right)$
$\dfrac{Q^2}{4\pi\varepsilon_0}\left(1 + \dfrac{1}{\sqrt{5}}\right)$✔️
$\dfrac{Q^2}{2\sqrt{2}\,\pi\varepsilon_0}$
$\dfrac{Q^2}{4\pi\varepsilon_0}$

Correct Answer Logic:

Work done = $Q \times V_{origin}$, where $V_{origin}$ is the potential at origin due to the four charges.

Distances from origin:

$(0,2)$: $r_1 = 2$
$(0,-2)$: $r_2 = 2$
$(4,2)$: $r_3 = \sqrt{16+4} = \sqrt{20} = 2\sqrt{5}$
$(4,-2)$: $r_4 = \sqrt{20} = 2\sqrt{5}$

$V = \frac{Q}{4\pi\varepsilon_0}\left(\frac{1}{2}+\frac{1}{2}+\frac{1}{2\sqrt{5}}+\frac{1}{2\sqrt{5}}\right) = \frac{Q}{4\pi\varepsilon_0}\left(1 + \frac{1}{\sqrt{5}}\right)$

Work $= QV = \dfrac{Q^2}{4\pi\varepsilon_0}\left(1+\dfrac{1}{\sqrt{5}}\right)$

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Biology Zoology Botany QUESTION #1380

Question 2397

What is the ploidy level of the endosperm in angiosperms?

Haploid (n)
Diploid (2n)
Triploid (3n)✔️
Tetraploid (4n)

Correct Answer Logic:

In angiosperms, the endosperm is formed by triple fusion — the fusion of two polar nuclei (each haploid, n) with one male gamete (n) — resulting in a triploid (3n) nucleus. The endosperm develops into a nutritive tissue that nourishes the developing embryo. This is a unique feature of double fertilization in angiosperms.

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The Constitution of Pakistan QUESTION #9392

Question 2398

Under Article 232(7)(b) as applicable, after a Proclamation of Emergency is approved by the joint sitting, it can be revoked before the natural expiry if:

The National Assembly passes a simple majority resolution
A resolution disapproving the proclamation is passed by votes of the majority of the total membership of both Houses in joint sitting✔️
The Senate alone passes a two-thirds majority resolution
The President withdraws it without parliamentary approval

Correct Answer Logic:

Article 232(7)(b) provides that the Proclamation shall cease to be in force 'upon a resolution disapproving the proclamation being passed by the votes of the majority of the total membership of the two Houses in joint sitting.' This is an absolute majority of both Houses combined in joint sitting — a high but achievable threshold to end an emergency.

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Education QUESTION #1487

Question 2399

Pavlov's Classical Conditioning experiment demonstrated that dogs could be trained to salivate at the sound of a bell. This bell is an example of:

Unconditioned stimulus
Conditioned (neutral) stimulus✔️
Operant response
Primary reinforcer

Correct Answer Logic:

The bell is a neutral/conditioned stimulus. Pavlov paired it with food (unconditioned stimulus) until the dogs salivated at the bell alone, demonstrating Classical Conditioning.

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Education QUESTION #7590

Question 2400

Which assessment focuses on measuring what students can actually do rather than simply recall facts?

Performance-based assessment✔️
Objective test
Oral test
Short-answer test

Correct Answer Logic:

Performance-based assessment requires students to demonstrate skills through actual tasks or activities, showing application rather than just factual recall.

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