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General Knowledge QUESTION #2623

What is the function of a HEATSINK in a computer?

To store temporary data for quick access by the CPU
To connect the CPU to the RAM through a dedicated data channel
To dissipate (remove) heat from the CPU to prevent it from overheating✔️
To manage the flow of electrical power from the power supply to all components

Correct Answer Logic:

A heatsink is used to dissipate heat from our CPU. The CPU generates significant heat during operation. The heatsink draws this heat away from the CPU and disperses it into the surrounding air, often aided by a cooling fan, to prevent damage from overheating.

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Pakistan Affairs QUESTION #622

Question 2382

What is the name of the economist who developed the current Human Development Index (HDI)?

Dr. Qaisar Bengali
Dr. Mahbub ul Haq✔️
Dr. Hafeez Pasha
None of these

Correct Answer Logic:

Dr. Mahbub ul Haq, a Pakistani economist, created the HDI in 1990 .

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3437

Question 2383

'Urea' is the main end product of the metabolism of:

Carbohydrates
Fats
Proteins (Amino acids)✔️
Nucleic acids

Correct Answer Logic:

The urea cycle in the liver removes toxic ammonia from the body.

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English QUESTION #827

Question 2384

Pick the correct sentence about disagreeing:

Why did you disagree with me?✔️
Why did you disagree to me?
Why did you disagree on me?
Why did you disagree by me?

Correct Answer Logic:

The correct preposition after 'disagree' when referring to a person is 'with'. Correct: 'disagree with someone'.

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Professional QUESTION #1864

Question 2385

Under Rule 12, what type of experience is prescribed for initial appointment unless otherwise specified?

Pre-qualification experience
Total work experience
Post-qualification experience✔️
Government service experience only

Correct Answer Logic:

The proviso to Rule 12 states that unless otherwise specified, the experience prescribed for initial appointment shall be the post-qualification experience.

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Physics QUESTION #1033

Question 2386

A model states flux through electron orbit in magnetic field $B$ is $n(h/e)$. The magnetic moment in the lowest energy state ($n=1$) is:

$\dfrac{heB}{\pi m}$
$\dfrac{heB}{2\pi m}$✔️
$\dfrac{he}{\pi m}$
$\dfrac{he}{2\pi m}$

Correct Answer Logic:

Flux: $B\pi r^2 = \frac{nh}{e}\Rightarrow r^2 = \frac{nh}{\pi eB}$. For $n=1$: $r=\sqrt{\frac{h}{\pi eB}}$. $mv^2/r = evB\Rightarrow v = \frac{eBr}{m}$. Magnetic moment $\mu = iA = \frac{ev}{2\pi r}\cdot\pi r^2 = \frac{evr}{2} = \frac{e}{2}\cdot\frac{eBr^2}{m} = \frac{e^2Bh}{2\pi em} = \frac{heB}{2\pi m}$.

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Agronomy QUESTION #2037

Question 2387

Post-harvest losses in cereal grains during storage are MOST significantly caused by:

Exposure to ultraviolet radiation during daytime
Improper moisture content (above 13–14% for cereals) leading to mold growth, mycotoxin production, and insect infestation✔️
Use of metallic storage bins instead of gunny bags
Storage at temperatures below 10°C

Correct Answer Logic:

Grain moisture above 13–14% creates conditions favorable for fungal growth (Aspergillus, Penicillium), mycotoxin (aflatoxin) production, and insect multiplication. Maintaining safe moisture levels through proper drying is the single most critical factor in preventing post-harvest storage losses.

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English QUESTION #663

Question 2388

"Why I Am Not a Christian" is an essay by:

Bertrand Russell✔️
T. S. Eliot
Ralph Waldo Emerson
George Orwell

Correct Answer Logic:

This influential essay was based on a talk given by Russell in 1927.

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Security Measures to Maintain Law and Order QUESTION #838

Question 2389

To maintain law and order, the Federal Government may delegate its powers to the DG under:

Section 8
Section 9✔️
Section 11
Section 13

Correct Answer Logic:

Section 9 allows the Federal Government to delegate its powers to the DG or any other authority.

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Biology Zoology Botany QUESTION #1374

Question 2390

The cell wall of fungi is primarily composed of:

Cellulose
Chitin✔️
Pectin
Lignin

Correct Answer Logic:

The cell wall of fungi is primarily composed of chitin — a nitrogen-containing polysaccharide made of N-acetylglucosamine units linked by β-1,4-glycosidic bonds. This is a key distinguishing feature of fungi from plants (whose cell walls contain cellulose). Chitin provides structural strength and rigidity to the fungal cell wall.

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Physics and Math QUESTION #778

Question 2391

$\left(\dfrac{1 - \sqrt{3}i}{2}\right)^4 = ?$

$\dfrac{-1 + \sqrt{3}i}{2}$✔️
$\dfrac{-1 - \sqrt{3}i}{2}$
$\left(\dfrac{-1 + \sqrt{3}i}{2}\right)^2$
None

Correct Answer Logic:

$\dfrac{1-\sqrt{3}i}{2}$ is a complex cube root of unity $\omega^2$, so $(\omega^2)^4 = \omega^8 = \omega^2 \cdot \omega^6 = \omega^2 = \dfrac{-1+\sqrt{3}i}{2}$.

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The Title 28 of the United States Code QUESTION #3720

Question 2392

A defendant is driving $\text{5 mph}$ over the speed limit. A pedestrian, who is not looking where they are going, steps into the street and is hit. The jury finds the defendant $\text{10%}$ at fault and the pedestrian $\text{90%}$ at fault. The jurisdiction follows 'pure comparative negligence.' The pedestrian's total damages are $\text{\$100,000}$. How much can the pedestrian recover?

Nothing, because the pedestrian was more than $\text{50%}$ at fault.
$\text{\$10,000}$.✔️
$\text{\$90,000}$.
$\text{\$100,000}$.

Correct Answer Logic:

In a 'pure' comparative negligence jurisdiction, a plaintiff can recover damages regardless of their percentage of fault, but the recovery is reduced by that percentage. $\text{\$100,000} - 90\% = \text{\$10,000}$.

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Biology QUESTION #4250

Question 2393

Receptors that are located in the retina of eye are called:

Merkel disc
Ruffini endings
Pacinian corpuscles
Rod and Cone✔️

Correct Answer Logic:

Rod and cone cells are photoreceptors in retina.

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Mathematics QUESTION #4092

Question 2394

The solution set of the inequality $x^2+x>2$ is:

$(-2,1)$
$(-\infty,-2)\cup(1,\infty)$✔️
$[-2,1]$
$(-1,2)$

Correct Answer Logic:

Factor: $x^2+x-2=(x+2)(x-1)>0$. Product of two factors is positive when both are positive ($x>1$) or both are negative ($x<-2$). Solution: $(-\infty,-2)\cup(1,\infty)$.

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Chemistry QUESTION #1443

Question 2395

A molecule is chiral if:

It has at least one plane of symmetry.
It has a chiral center and is non-superimposable on its mirror image.✔️
It rotates polarized light to the left.
None of these

Correct Answer Logic:

A molecule is chiral if it is non-superimposable on its mirror image — this is the fundamental definition of chirality. The presence of a chiral center (a carbon bearing four different substituents) is the most common cause, but not the only one. Option (A) is wrong: a plane of symmetry makes a molecule achiral. Option (C) is wrong: rotating light to the left makes it levorotatory (–), but chirality doesn't require any specific direction of rotation.

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Statistics QUESTION #1966

Question 2396

The discrepancy between a computed sample statistic and the true population parameter is technically referred to as:

Sampling error✔️
Random error
Non-random error
Probability error

Correct Answer Logic:

Sampling error is the difference between a sample statistic and the true population parameter. It arises because only a subset of the population is observed.

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Pakistan Affairs QUESTION #602

Question 2397

The Third Battle of Panipat (1761) was fought between Ahmad Shah Abdali and:

The Mughals
The Marhattas✔️
The British
None of These

Correct Answer Logic:

The battle was a major conflict between the Durrani Empire and the Maratha Empire.

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Others section QUESTION #4704

Question 2398

How many Wimbledon singles titles did Martina Navratilova win in total?

Six
Eight
Nine✔️
Eleven

Correct Answer Logic:

Martina Navratilova won 9 Wimbledon singles titles (1978–79, 1982–87, 1990), making her the most successful player in Wimbledon singles history at the time.

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