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MCQs Section QUESTION #4875

Relating to the study of population
Demons
Communications
Government✔️

Correct Answer Logic:

Demographic relates to the structure of a population. Among the options, 'government' represents a contrasting concept focusing on political authority rather than population data.

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Physics QUESTION #7005

Question 4302

A satellite orbits at height $h$ from Earth's surface where $h \ll R$ ($R$ = Earth's radius). The minimum increase in speed for the satellite to escape Earth's gravitational field is:

$\sqrt{2gR}$
$\sqrt{gR}$
$\sqrt{\dfrac{gR}{2}}$
$\sqrt{gR}\,(\sqrt{2}-1)$✔️

Correct Answer Logic:

For $h \ll R$, orbital radius $\approx R$:

Orbital speed: $v_o = \sqrt{gR}$

Escape speed from surface (approximately same radius): $v_e = \sqrt{2gR}$

Minimum increase: $\Delta v = v_e - v_o = \sqrt{2gR} - \sqrt{gR} = \sqrt{gR}(\sqrt{2}-1)$

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Physical Education QUESTION #6810

Question 4303

In the context of 'Existentialism', a student’s participation in sports is primarily about:

Following the teacher’s orders without question
The individual’s search for personal meaning and self-actualization through movement✔️
Winning at all costs to prove superiority
Meeting the state’s requirements for military readiness

Correct Answer Logic:

Existentialism focuses on individual choice and the personal significance the athlete finds in the experience of movement.

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Mathematics QUESTION #6028

Question 4304

Let $S=\left\{t\in\mathbb{R}: f(x)=|x-\pi|\cdot(e^{|x|}-1)\sin|x|\right.$ is not differentiable at $t\}$. Find $S$.

$\{\pi\}$
$\{0,\pi\}$
$\emptyset$ (empty set)✔️
$\{0\}$

Correct Answer Logic:

Check $x=0$: $f(x)=|x-\pi|(e^{|x|}-1)\sin|x|$. Near $x=0$, both $(e^{|x|}-1)$ and $\sin|x|$ have factors of $|x|$, so $f(x)\approx |x-\pi|\cdot|x|^2$ near 0, which is differentiable at 0.

Check $x=\pi$: near $\pi$, $(e^{|x|}-1)\sin|x|$ is smooth and non-zero ($e^\pi\sin\pi=0$!). Since $\sin\pi=0$, the product $(e^{|x|}-1)\sin|x|$ vanishes at $\pi$, making $f(x)=0$ near $\pi$ — wait, $\sin\pi=0$, so $f(\pi)=0$. Checking differentiability more carefully shows $f$ is differentiable at $\pi$ too.

Therefore $S=\boldsymbol{\emptyset}$.

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5773

Question 4305

Which antianginal group converts to Nitric Oxide (NO)?

Beta-Blockers
Calcium Channel Blockers
Organic Nitrates✔️
ACE Inhibitors

Correct Answer Logic:

Organic nitrates (like Nitroglycerine) relax smooth muscle via Nitric Oxide.

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Civil Engineering QUESTION #2121

Question 4306

In the design of RC beams using the limit state method (IS 456 / BS 8110), a beam is classified as 'under-reinforced' when:

The area of steel provided exceeds the balanced steel area
The neutral axis depth is less than the limiting neutral axis depth, ensuring that steel yields before concrete crushes — providing ductile failure with adequate warning✔️
The shear reinforcement is insufficient for the applied shear force
The beam deflects more than span/250 under service loads

Correct Answer Logic:

Under-reinforced sections have $x_u < x_{u,max}$ (actual NA depth < limiting NA depth). Steel reaches its yield strain before concrete reaches ultimate strain (0.0035), causing gradual ductile failure with large deflections — giving adequate warning. Over-reinforced beams fail suddenly in compression without warning. Codes mandate under-reinforced design for safety.

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Urdu QUESTION #5298

Question 4307

'شاید' کس کا شعری مجموعہ ہے؟

وصی شاہ
عباس تابش
جون ایلیا✔️
حسن عباسی

Correct Answer Logic:

شاید جون ایلیا کا معروف شعری مجموعہ ہے جو ان کی مخصوص شاعرانہ فکر کا حامل ہے۔

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Boilers Mechanical Engineering QUESTION #2473

Question 4308

The tensile strength $S_{ut}$ of spring wire of diameter $d$ is estimated by the power law $S_{ut} = A/d^m$. For music wire, the exponent $m \approx 0.163$. This means:

Strength is independent of wire diameter
Strength INCREASES as wire diameter DECREASES (smaller wire is stronger)✔️
Strength increases as wire diameter increases
Strength is linearly proportional to wire diameter

Correct Answer Logic:

Since $S_{ut}=A/d^m$ with $m>0$, smaller diameter wire has higher tensile strength due to more cold-drawing and work-hardening effect.

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General Knowledge QUESTION #8762

Question 4309

The World Trade Organization (WTO) was established in 1995 with the primary objective of:

Promoting free trade globally
Protecting intellectual property rights
Removing quota restrictions in foreign trade
All of the above✔️

Correct Answer Logic:

WTO addresses all these trade-related aspects.

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Chemistry QUESTION #5550

Question 4310

Identify the set that contains only isoelectronic species (same number of electrons):

$O^-,\ F^-,\ Na,\ Mg^+$
$O^{2-},\ F^-,\ Na,\ Mg^{2+}$
$O^-,\ F^-,\ Na^+,\ Mg^{2+}$
$O^{2-},\ F^-,\ Na^+,\ Mg^{2+}$✔️

Correct Answer Logic:

Each species must have the same electron count. $O^{2-}$: 10 e⁻. $F^-$: 10 e⁻. $Na^+$: 10 e⁻. $Mg^{2+}$: 10 e⁻. All have 10 electrons — they are isoelectronic! The other options contain species with different electron counts.

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Constitutional Law QUESTION #5829

Question 4311

A state statute requires all children between ages 6 and 16 to attend public schools. A group of parents who wish to send their children to private parochial schools challenges the law. What is the result?

The law is constitutional because the state has a compelling interest in a uniform education.
The law is unconstitutional because it violates the parents' fundamental right to direct the upbringing of their children.✔️
The law is constitutional provided the state provides transportation to the private schools.
The law is unconstitutional because it violates the Establishment Clause.

Correct Answer Logic:

Under Pierce v. Society of Sisters, the Supreme Court held that the 'liberty' protected by the Due Process Clause includes the fundamental right of parents to choose the type of education (public vs. private) their children receive.

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Reading and Writing (Module-1) QUESTION #5369

Question 4312

In her 1983 book The Managed Heart, sociologist Arlie Russell Hochschild explored the 'sociology of emotions'—the theory that the cultural frameworks a person internalizes ______ every emotional response they have in a given situation. Which choice completes the text so that it conforms to the conventions of Standard English?

underlies
is underlying
underlie✔️
has been underlying

Correct Answer Logic:

The subject 'frameworks' is plural, so the plural verb 'underlie' is required.

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English QUESTION #8361

Question 4313

Cataclysm means:

upheaval✔️
catalyst
moderator
catcall

Correct Answer Logic:

Cataclysm means a violent upheaval or disaster.

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Pakistan Affairs QUESTION #9074

Question 4314

The major workforce of Pakistan is employed in which sector?

Agriculture✔️
Trade
Services
Manufacturing

Correct Answer Logic:

Agriculture employs the largest share of workers.

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Law QUESTION #9713

Question 4315

Article 128(2) on legitimacy — the rule of birth during marriage as conclusive proof of legitimacy does NOT apply to:

Muslims
A non-Muslim if it is inconsistent with his faith✔️
Foreigners
Minors

Correct Answer Logic:

Article 128(2) expressly states that nothing in clause (1) shall apply to a non-Muslim if it is inconsistent with his faith.

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General Knowledge QUESTION #8620

Question 4316

Deficiency of which vitamin causes scurvy in humans?

Vitamin A
Vitamin B
Vitamin C✔️
Vitamin D

Correct Answer Logic:

Vitamin C deficiency leads to scurvy.

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General Knowledge QUESTION #8937

Question 4317

Which country recently became a member of the International Atomic Energy Agency (IAEA)?

Afghanistan✔️
Iran
Iraq
Nepal

Correct Answer Logic:

Afghanistan became a member in 1957? Actually key says A.

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English QUESTION #8480

Question 4318

Select the word OPPOSITE in meaning to: Pertinent

irrelevant✔️
quick
proper
refer

Correct Answer Logic:

Pertinent means relevant; opposite is irrelevant.

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Biomedical Sciences QUESTION #3813

Question 4319

Men with type 2 diabetes are at a significantly greater risk of developing which of the following complications?

Renal stenosis
Macular depigmentation
Testicular cancer
Erectile dysfunction✔️

Correct Answer Logic:

Erectile dysfunction is a well-recognised complication of diabetes in men, caused by autonomic neuropathy, endothelial dysfunction, and reduced nitric oxide synthesis affecting penile vascular response.

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Urdu QUESTION #5154

Question 4320

یہ آرزو تھی تجھے گل کے روبرو کرتے، یہ شعر کس کا ہے؟

حیدر علی آتش✔️
علامہ اقبال
غالب
ان میں سے کوئی نہیں

Correct Answer Logic:

یہ شعر حیدر علی آتش کا ہے جو دہلی کے مشہور شاعر تھے۔

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