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General Knowledge QUESTION #2612

The MOTHERBOARD of a computer is best described as:

A high-speed memory chip that stores temporary data
The body or circulatory system of the computer that connects all the pieces together✔️
The component that converts electricity from the wall into usable power for the computer
A type of storage device that holds music and documents

Correct Answer Logic:

The motherboard is the body or circulatory system of the computer that connects all the pieces together. Every major component — CPU, RAM, storage, ports — is connected through or to the motherboard.

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English QUESTION #8308

Question 2

I insisted _______ my fee paid.

To have
On having✔️
In having
To having

Correct Answer Logic:

'Insisted on' is the correct phrasal verb pattern.

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General Science and Ability QUESTION #245

Question 3

In fish liver oil there is:

Vitamin A only
Vitamin D only
Vitamin A and vitamin E
Vitamin A and Vitamin D✔️

Correct Answer Logic:

Fish liver oil is a potent source of both fat-soluble vitamins A and D.

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Physics QUESTION #7031

Question 4

A travelling wave on a string with linear mass density $5\text{ g/m}$ is described by $y = 0.03 \sin(450t - 9x)$ in SI units. What is the tension maintained in the string?

$10\text{ N}$
$7.5\text{ N}$
$12.5\text{ N}$✔️
$5\text{ N}$

Correct Answer Logic:

Wave speed $v = \frac{\omega}{k} = \frac{450}{9} = 50\text{ m/s}$. The formula for wave speed in a string is $v = \sqrt{\frac{T}{\mu}}$. Squaring both sides gives $T = v^2 \mu$. Substituting the values: $T = 50^2 \times 0.005 = 2500 \times 0.005 = 12.5\text{ N}$.

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Mathematics QUESTION #6031

Question 5

Let $f(x)=\begin{cases}\max\{|x|,x^2\},&|x|\le2\\8-2|x|,&2<|x|\le4\end{cases}$. Let $S$ be the set of points in $(-4,4)$ where $f$ is not differentiable. Find $S$.

Empty set
$\{-2,-1,0,1,2\}$✔️
$\{-2,-1,1,2\}$
$\{-2,2\}$

Correct Answer Logic:

On $[-2,2]$: $\max(|x|,x^2)=x^2$ when $x^2\ge|x|$, i.e., $|x|\ge1$; equals $|x|$ when $|x|\le1$.

So $f(x)=|x|$ for $|x|\le1$ and $f(x)=x^2$ for $1\le|x|\le2$.

Check non-differentiability: At $x=0$: $|x|$ is not differentiable. At $x=\pm1$: left-hand $f'=\pm1$, right-hand $f'=2x=\pm2$ — not equal, so not differentiable. At $x=\pm2$: $f(2^-)=4$, $f(2^+)=4$; $f'(2^-)=4$, $f'(2^+)=-2$ — not differentiable.

So $S=\{-2,-1,0,1,2\}$.

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English QUESTION #8465

Question 6

See that you _______ for the meeting in time.

will come
come✔️
would come
came

Correct Answer Logic:

Present subjunctive or imperative 'come' is used after 'see that you'.

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Tourism & Hospitality Management QUESTION #1628

Question 7

In the Event Management course, the 'AIDA' framework referenced under feasibility analysis refers to which concept?

An advanced inventory and distribution assessment for event catering
A marketing communication model: Attention, Interest, Desire, and Action — used to structure event marketing and promotional strategy✔️
A financial analysis tool: Assets, Income, Debt, and Allocation
A risk assessment tool: Assessment, Identification, Decision, and Action

Correct Answer Logic:

The Event Management course (Module 2: Concept & Design) lists AIDA alongside SWOT, PEST, and SMART as feasibility and analytical tools used in event planning. AIDA (Attention, Interest, Desire, Action) is a foundational marketing communication model that guides how promotional messages for events are structured to move audiences from awareness to ticket purchase or attendance.

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Physics QUESTION #1027

Question 8

The current passing through the battery in the given circuit (5V source with complex resistor network including $1.5\Omega, 5\Omega, 2.5\Omega, 5.5\Omega, 6\Omega, 3\Omega, 1.5\Omega, \frac{1}{3}\Omega$):

2.5 A
1.5 A
2.0 A✔️
0.5 A

Correct Answer Logic:

Analysing the circuit by combining resistors: the network simplifies to a total resistance of $2.5\ \Omega$ across the 5V battery. Current $= \frac{5}{2.5} = 2.0\ \text{A}$.

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Contracts QUESTION #5843

Question 9

A Buyer agrees to buy 'all the gasoline I need for my fleet' from a Seller for one year. Is this a valid contract?

No, it is illusory because the quantity is indefinite.
No, because it lacks a price term.
Yes, it is a valid requirements contract.✔️
Yes, but only if the Buyer specifies a maximum amount.

Correct Answer Logic:

UCC §2-306 validates requirements and output contracts despite the indefinite quantity, provided the parties act in good faith.

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Math Physics Chemistry Biology QUESTION #4267

Question 10

Which part of the brain contains central chemoreceptors that monitor $CO_2$ levels in blood?

Pons
Midbrain
Hypothalamus
Medulla oblongata✔️

Correct Answer Logic:

The medulla oblongata contains central chemoreceptors that detect changes in $CO_2$ and pH of cerebrospinal fluid, regulating the breathing rate.

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5777

Question 11

Acetazolamide is primarily used to treat:

Hypotension
Open-angle glaucoma✔️
Diarrhea
Muscle spasms

Correct Answer Logic:

It inhibits carbonic anhydrase to reduce intraocular pressure.

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Constitutional Law QUESTION #5835

Question 12

A state passes a law that restricts the right to vote in local school board elections to only those individuals who own property within the district. Is this law constitutional?

Yes, because property owners have a greater stake in school funding.
Yes, because the state has a rational basis to limit voting to 'interested' parties.
No, because voting is a fundamental right and the restriction fails strict scrutiny.✔️
No, because it violates the 24th Amendment's prohibition on poll taxes.

Correct Answer Logic:

Under Kramer v. Union Free School District, restrictions on the right to vote in general-interest elections (like school boards) are subject to strict scrutiny. A property-ownership requirement is not narrowly tailored to a compelling state interest.

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Education QUESTION #6751

Question 13

A test has a Kuder-Richardson reliability of 0.85. A parallel form of the same test yields a test-retest-with-equivalent-forms correlation of 0.68. Which of the following best explains this discrepancy?

KR-20 measures stability over time, so it should always be lower than equivalent-forms reliability
KR-20 measures internal consistency within a single administration, while the equivalent-forms method captures both stability over time and equivalence across forms; thus the latter is typically lower✔️
The second test was harder, which automatically reduces reliability estimates
KR-20 is only applicable to essay tests, making the comparison invalid

Correct Answer Logic:

KR-20 is an internal consistency measure computed from a single test administration — it cannot capture the variance introduced by time passage or form differences. The equivalent-forms-with-retest method measures both stability and equivalence, capturing additional sources of variance that lower the coefficient. This explains why KR-20 (single administration) tends to exceed test-retest-with-equivalent-forms reliability.

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The Constitution of Pakistan QUESTION #9372

Question 14

A person convicted of an offence involving moral turpitude and sentenced to imprisonment for not less than two years is disqualified from parliamentary membership under Article 63(1)(h). When does this disqualification end?

After completing the sentence
Five years after release from imprisonment✔️
Two years after release
Permanently

Correct Answer Logic:

Article 63(1)(h) disqualifies a person who has been convicted for an offence involving moral turpitude and sentenced to not less than two years imprisonment, 'unless a period of five years has elapsed since his release.' Both the nature of the offence (moral turpitude) and the minimum sentence threshold (2 years) must be met.

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Civil Engineering QUESTION #2129

Question 15

In water treatment, coagulation and flocculation are distinct processes where:

Coagulation uses slow mixing to form large settleable flocs; flocculation uses rapid mixing to destabilize colloids
Coagulation (rapid mixing) destabilizes colloidal particles by neutralizing their surface charge (zeta potential) using alum or ferric salts; flocculation (slow, gentle mixing) then aggregates the destabilized particles into larger, settleable floc through physical contact and van der Waals forces✔️
Both processes are identical and occur simultaneously in the same mixing unit
Coagulation removes dissolved solids; flocculation removes suspended solids

Correct Answer Logic:

Coagulation: rapid mixing (30–60 sec, G = 300–1000 s⁻¹) with coagulant (alum: Al₂(SO₄)₃, produces Al(OH)₃) neutralizes the negative surface charge of colloids, reducing electrostatic repulsion (double layer compression). Flocculation: slow mixing (10–30 min, G = 10–75 s⁻¹) promotes gentle particle collisions, building floc size through orthokinetic flocculation — floc must be large/dense enough to settle in clarifiers.

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Math (Module-1) QUESTION #5381

Question 16

At the start of a new semester, a film club consists of $90$ members. For each subsequent day, $10$ additional members join the group. Assuming no one leaves, how many total members will be in the club $4$ days after the first day?

$400$
$130$✔️
$94$
$90$

Correct Answer Logic:

The total members can be calculated using $90 + 10(d)$. For $d = 4$, we have $90 + 10(4) = 90 + 40 = 130$.

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Egnlish QUESTION #663

Question 17

"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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Pakistan Affairs QUESTION #147

Question 18

What argument did Sir Syed Ahmad Khan make in his seven-volume Commentary on the Quran?

The Quran contains allegorical interpretations of divine laws
The Quran is the word of God, and nature is the work of God✔️
The Quran promotes the separation of religion and science
None of these

Correct Answer Logic:

He argued that there can be no contradiction between the Word of God (Quran) and the Work of God (Nature).

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General Abilities QUESTION #4556

Question 19

What is $15\%$ of $80$?

$12$✔️
$15$
$95$
$1200$

Correct Answer Logic:

$15\%$ of $80 = \frac{15}{100} \times 80 = 0.15 \times 80 = 12$

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Accounting & Finance QUESTION #1226

Question 20

Which of the following enjoys limited liability?

A general partnership.
A corporation.✔️
A sole proprietorship.
None of these

Correct Answer Logic:

A corporation (company) is a separate legal entity from its owners (shareholders). Shareholders enjoy limited liability — their personal assets are protected, and they can only lose the amount they invested. In a general partnership, all partners have unlimited personal liability. In a sole proprietorship, the owner has unlimited liability.

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