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Physics QUESTION #395

Question 341

In a step-down transformer the output current __________

Is reduced
Is increased✔️
Remains same
None of these

Correct Answer Logic:

Step-down transformer increases current while decreasing voltage

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MCQs Section QUESTION #4844

Question 342

Pick the word nearly opposite in meaning to "SEDENTARY"

Afraid
Loyal
Active✔️
Torpid

Correct Answer Logic:

Sedentary means tending to spend much time seated or inactive. Its antonym is 'active,' meaning engaging in physical movement and not remaining still.

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Accounting & Finance QUESTION #6167

Question 343

In Yield Curve Theory, what does an 'Abnormal' or downward-sloping curve typically suggest?

Investors expect inflation to rise
Long-term interest rates are higher than short-term rates
Short-term rates are higher than long-term rates✔️
The market is perfectly segmented

Correct Answer Logic:

Lesson 04 defines the Abnormal (Inverted) curve as the case where short-term rates are higher than long-term rates.

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Biology Zoology Botany QUESTION #1339

Question 344

The flexible rod along the dorsal midline in an embryo of chordates is replaced by:

Nerve chord
Sensory organs
Vertebral column✔️
None of these

Correct Answer Logic:

The notochord is the flexible rod-like structure present along the dorsal midline in chordate embryos. In vertebrates, it is replaced during development by the vertebral column (spine). The notochord induces the formation of the neural tube (which becomes the nervous system) but is itself replaced by vertebrae in most vertebrates.

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Verbal Reasoning QUESTION #8104

Question 345

For all real numbers $a$, let $a^* = 1 - a$.

Compare:

Column A: $((-1)^*)^*$

Column B: $2^*$

Column A is greater
Column B is greater
The two quantities are equal✔️
The relationship cannot be determined from the information given

Correct Answer Logic:

Using the definition $a^* = 1 - a$:

Step 1: $(-1)^* = 1 - (-1) = 2$

Step 2: $((-1)^*)^* = (2)^* = 1 - 2 = -1$

Column A $= -1$

Column B: $2^* = 1 - 2 = -1$

Both quantities equal $-1$, so the two quantities are equal.

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Logical Reasoning QUESTION #4427

Question 346

What will come next in the series? $1,\ 4,\ 2,\ 5,\ 3,\ 6,\ 4,\ 7,\ ...$

5✔️
6
7
8

Correct Answer Logic:

The series has two interleaved sequences: Odd positions: $1,\ 2,\ 3,\ 4,\ ...$ (increasing by $1$) and Even positions: $4,\ 5,\ 6,\ 7,\ ...$ (increasing by $1$). The next term is in an odd position, continuing the sequence $1,\ 2,\ 3,\ 4,\ \mathbf{5}$. Answer: $5$.

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Urdu QUESTION #5046

Question 347

حیاتِ سعدی کس نے لکھی ہے؟

الطاف حسین حالی
سر سید احمد خان
مولانا شبلی نعمانی✔️
ان میں سے کوئی نہیں

Correct Answer Logic:

حیاتِ سعدی مولانا شبلی نعمانی کی تصنیف ہے جو شیخ سعدی شیرازی کی سوانح عمری پر مبنی ہے۔

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Math Physics Chemistry Biology QUESTION #799

Question 348

The maximum volume of $\text{O}_2$ is at:

HTP
STP✔️
$127°\text{C},\ 1\ \text{atm}$
None

Correct Answer Logic:

At STP (Standard Temperature and Pressure: $0°\text{C},\ 1\ \text{atm}$), gases occupy maximum volume as temperature is lower, keeping more molecules in gaseous phase.

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Mathematics QUESTION #7436

Question 349

Let $\vec{a}, \vec{b}$ and $\vec{c}$ be three non-zero vectors such that no two of them are collinear and $(\vec{a} \times \vec{b}) \times \vec{c} = \frac{1}{3}|\vec{b}||\vec{c}|\vec{a}$. If θ is the angle between vectors $\vec{b}$ and $\vec{c}$, then a value of sin θ is:

$\frac{2\sqrt{2}}{3}$✔️
$\frac{-\sqrt{2}}{3}$
$\frac{2}{3}$
$\frac{-2\sqrt{3}}{3}$

Correct Answer Logic:

Using the vector triple product formula: $(\vec{a} \times \vec{b}) \times \vec{c} = (\vec{a} \cdot \vec{c})\vec{b} - (\vec{b} \cdot \vec{c})\vec{a}$. Given this equals $\frac{1}{3}|\vec{b}||\vec{c}|\vec{a}$, we have $(\vec{a} \cdot \vec{c})\vec{b} - (\vec{b} \cdot \vec{c})\vec{a} = \frac{1}{3}|\vec{b}||\vec{c}|\vec{a}$. Since $\vec{a}$ and $\vec{b}$ are non-collinear, comparing coefficients: $\vec{b} \cdot \vec{c} = -\frac{1}{3}|\vec{b}||\vec{c}|$, which gives $\cos\theta = -\frac{1}{3}$. Therefore, $\sin\theta = \sqrt{1-\cos^2\theta} = \sqrt{1-\frac{1}{9}} = \sqrt{\frac{8}{9}} = \frac{2\sqrt{2}}{3}$.

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CISA QUESTION #6867

Question 350

An organization's network architecture uses VLANs to segment traffic but all VLANs route through a single core switch with no filtering between VLANs. What is the PRIMARY security weakness?

Insufficient VLAN count
VLAN segmentation provides no security benefit without inter-VLAN filtering✔️
Complex routing
Single point of failure

Correct Answer Logic:

VLANs provide only logical separation—without filtering between VLANs (through firewalls or ACLs), they provide minimal security benefit. Traffic can move freely between VLANs, defeating segmentation's security purpose. Effective segmentation requires both logical separation and enforcement of access controls between segments.

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Boilers Mechanical Engineering QUESTION #2390

Question 351

The phase margin (PM) of a control system is defined as:

The gain at the phase crossover frequency
$PM = 180° + \angle Y_1(j\omega_{gc})$ where $\omega_{gc}$ is the gain crossover frequency (where $|Y_1(j\omega)|=1$)✔️
$PM = |Y_1(j\omega_{pc})|$ where $\omega_{pc}$ is the phase crossover frequency
The bandwidth of the closed-loop system

Correct Answer Logic:

Phase margin: $PM=180°+\phi_{gc}$ where $\phi_{gc}=\angle Y_1(j\omega_{gc})$ at the gain crossover frequency. PM indicates how much additional phase lag would bring the system to the verge of instability. Typically $PM\geq45°$ is desired.

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Tourism & Hospitality Management QUESTION #1586

Question 352

In the Sustainable Tourism course, 'Global Sustainable Tourism Criteria' are discussed in relation to which international framework?

The UNWTO's Code of Ethics for Tourism
The Sustainable Development Goals (SDGs) and sustainability policies✔️
The UNESCO World Heritage Convention
The Convention on Biological Diversity

Correct Answer Logic:

The Sustainable Tourism course specifically addresses Global Sustainable Tourism Criteria in the context of sustainability policies and their alignment with the Sustainable Development Goals (SDGs) — linking tourism operations to broader global development targets.

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Logical Reasoning QUESTION #3935

Question 353

Identify the option that best completes the sentence: The manager's _____ attitude toward his subordinates led to a significant decrease in office morale.

benevolent✔️
altruistic
dictatorial
supportive

Correct Answer Logic:

2

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Mathematics QUESTION #7434

Question 354

If the angles of elevation of the top of a tower from three collinear points A, B and C, on a line leading to the foot of the tower, are 30°, 45° and 60° respectively, then the ratio AB : BC is:

$\sqrt{3}:1$✔️
$\sqrt{3}:\sqrt{2}$
$1:\sqrt{3}$
2:03

Correct Answer Logic:

Let the height of tower be $h$ and distances from tower foot be $x_A, x_B, x_C$. From the angles: $\tan(30°) = \frac{h}{x_A}$ gives $x_A = h\sqrt{3}$; $\tan(45°) = \frac{h}{x_B}$ gives $x_B = h$; $\tan(60°) = \frac{h}{x_C}$ gives $x_C = \frac{h}{\sqrt{3}}$. Since points are collinear with C closest to tower: $AB = x_A - x_B = h\sqrt{3} - h = h(\sqrt{3}-1)$ and $BC = x_B - x_C = h - \frac{h}{\sqrt{3}} = h\frac{\sqrt{3}-1}{\sqrt{3}}$. Therefore, $\frac{AB}{BC} = \frac{h(\sqrt{3}-1)}{h\frac{\sqrt{3}-1}{\sqrt{3}}} = \sqrt{3}$. The ratio is $\sqrt{3}:1$.

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Math Physics Chemistry Biology QUESTION #749

Question 355

A completely filled band is called:

Forbidden band
Conduction band
Both
None✔️

Correct Answer Logic:

A completely filled energy band is called the Valence band. Since valence band is not listed the answer is None.

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Accounting Finance and Punjab Sales Tax on Services QUESTION #2580

Question 356

Under section 16A(4), if the transferred payment amount is NOT deposited in the business bank account of the service provider, which party loses the right to claim input tax credit, adjustment, deduction, refund, repayment or zero-rating?

The service recipient
The service provider✔️
Both the service recipient and service provider
Neither party — the tax can be recovered from the bank

Correct Answer Logic:

Section 16A(4) provides that the amount transferred must be deposited in the BUSINESS BANK ACCOUNT of the service provider; otherwise THE SERVICE PROVIDER shall not be entitled to claim input tax credit, adjustment, deduction, refund, repayment or zero-rating. This is distinct from sub-section (3) which restricts the service recipient's rights.

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Urdu QUESTION #5157

Question 357

صحیفہ کس ادارے کا جریدہ ہے؟

اکادمی ادبیات
مجلس ترقی ادب✔️
مقتدرہ قومی زبان
ان میں سے کوئی نہیں

Correct Answer Logic:

صحیفہ لاہور سے شائع ہونے والا ادبی جریدہ ہے جو مجلس ترقی ادب سے وابستہ ہے۔

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Planning QUESTION #4967

Question 358

What is 'Universal Design' in planning?

Design for specific user groups
Design for maximum capacity
Design accessible to all people✔️
Design for minimum cost

Correct Answer Logic:

Universal Design creates environments and products usable by all people to the greatest extent possible without adaptation, benefiting people of all ages and abilities.

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Administration QUESTION #9555

Question 359

Under the Rules of Business, a Secretary of a Division is responsible for the day-to-day administration of his Division. A policy matter of major significance arises. What is the correct procedural sequence for policy decision-making under Pakistan's constitutional framework?

Secretary decides and informs the Minister who ratifies the decision for implementation
Secretary prepares and presents the policy brief; Minister provides political direction and policy decision; Cabinet approves if it involves cross-ministerial impact; legislature is informed if it requires statutory change✔️
Federal Public Service Commission is consulted; Secretary implements after FPSC clearance; Minister signs off for political accountability
National Economic Council is convened for all major policy decisions, which are then forwarded to the Prime Minister for approval before Secretaries can act

Correct Answer Logic:

Under the Rules of Business, the Secretary is the administrative head responsible for preparing policy briefs and implementing decisions, but policy direction comes from the Minister (political head). Matters requiring cross-ministerial coordination or statutory change go to the Cabinet. This sequence reflects the constitutional structure of parliamentary government where elected ministers are accountable to the legislature.

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5785

Question 360

If a drug is an imitation of another drug or resembles another drug to deceive, it is:

Misbranded
Spurious✔️
Substandard
Counterfeit

Correct Answer Logic:

A drug that imitates another is classified as spurious[cite: 7].

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