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Urdu QUESTION #5105

Question 5441

'داماں پہ کوئی چھینٹ نہ خنجر پہ کوئی داغ' یہ کس کا شعر ہے؟

شوکت علی
ساحر لدھیانوی✔️
کلیم عاجز
جون ایلیا

Correct Answer Logic:

یہ مشہور شعر ساحر لدھیانوی کا ہے جو اپنی طنزیہ شاعری کے لیے جانے جاتے ہیں۔

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3116

Question 5442

The 'Pyloric Sphincter' regulates the passage of food from the:

Esophagus to stomach
Stomach to small intestine✔️
Small intestine to large intestine
Small intestine to gallbladder

Correct Answer Logic:

The pyloric sphincter is the 'gatekeeper' between the stomach and the duodenum.

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Mechanical Engineering QUESTION #2483

Question 5443

The velocity of a node B of a driver link in rotational motion (angular velocity $\omega = \dot{\phi}$, link length $L_{AB}$) is given by:

$v_{Bx} = -L_{AB}\dot{\phi}\sin\phi,\quad v_{By} = L_{AB}\dot{\phi}\cos\phi$✔️
$v_{Bx} = L_{AB}\dot{\phi}\cos\phi,\quad v_{By} = L_{AB}\dot{\phi}\sin\phi$
$v_{Bx} = L_{AB}\dot{\phi}^2\cos\phi,\quad v_{By} = -L_{AB}\dot{\phi}^2\sin\phi$
$v_{Bx} = -L_{AB}\ddot{\phi}\cos\phi,\quad v_{By} = L_{AB}\ddot{\phi}\sin\phi$

Correct Answer Logic:

Differentiating position equations $x_B=x_A+L_{AB}\cos\phi$ and $y_B=y_A+L_{AB}\sin\phi$ with respect to time: $v_{Bx}=-L_{AB}\dot{\phi}\sin\phi$ and $v_{By}=L_{AB}\dot{\phi}\cos\phi$.

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Commerce QUESTION #1217

Question 5444

An auditor should not accept a loan on favourable commercial terms from an audit client because of the threat to independence. The threat would be a:

Self-interest threat✔️
Self-review threat
Advocacy threat
Familiarity threat

Correct Answer Logic:

Accepting a loan on favorable terms from an audit client creates a self-interest threat — the auditor gains a personal financial benefit from the client relationship, which could consciously or subconsciously influence their judgment. The auditor's financial interests become aligned with the client's, compromising independence.

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Commerce QUESTION #6081

Question 5445

A firm maintains an allowance for doubtful debts at 5% of trade receivables. This year, trade receivables were $8,000, which represented a 20% decrease from the previous year. How will this change affect the current year's profit?

Decrease by $100
Decrease by $400
Increase by $100✔️
Increase by $400

Correct Answer Logic:

1. Current Receivables = $8,000. Current Allowance = $8,000 $\times$ 5% = $400.
2. Last Year Receivables = $8,000 / 0.80 = $10,000. Last Year Allowance = $10,000 $\times$ 5% = $500.
3. Change = $500 - $400 = $100 reduction in allowance.
A reduction in allowance is credited to the income statement, thus increasing profit by $100.

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Boilers Mechanical Engineering QUESTION #3979

Question 5446

In a 'Fire Tube' boiler, which of the following is true regarding the heat exchange process?

Water circulates inside the tubes, surrounded by hot gases
Hot gases pass through the tubes, surrounded by water✔️
The boiler is only used for very high pressure ($>100~bar$)
There are no tubes used in the design

Correct Answer Logic:

Fire-tube boilers like the Lancashire or Locomotive types have hot gases inside tubes to heat the surrounding water.

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Biology QUESTION #4333

Question 5447

Reversible inhibitors differ from irreversible inhibitors because they:

Bind permanently and cannot be removed
Bind temporarily and can be removed✔️
Permanently inactivate the enzyme
Change enzyme structure permanently

Correct Answer Logic:

Reversible inhibitors bind through weak, non-covalent interactions and can be removed, restoring enzyme activity. Irreversible inhibitors form permanent covalent bonds with the enzyme.

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Professional QUESTION #1888

Question 5448

Under Rule 7(2) proceedings under GS E&D Rules 1973 are deemed judicial proceedings within the meaning of which sections of Pakistan Penal Code?

Sections 182 and 211
Sections 193 and 228✔️
Sections 153 and 506
Sections 107 and 144

Correct Answer Logic:

Rule 7(2) explicitly states proceedings are deemed judicial proceedings within the meaning of sections 193 and 228 of the Pakistan Penal Code (XLV of 1860).

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English QUESTION #4449

Question 5449

His application for a visa was turned ____ by the consulate.

out
over
down✔️
aside

Correct Answer Logic:

To 'turn down' means to reject or refuse an application or offer.

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English QUESTION #2798

Question 5450

Complete the ANALOGY — an analogy shows a relationship between pairs of words: 'Doctor : Hospital :: Teacher : ___'

Office
Library
School✔️
University

Correct Answer Logic:

This analogy shows a 'worker : workplace' relationship. A doctor works in a hospital; a teacher works in a school. The relationship is: professional person to the place where they primarily work.

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Agronomy QUESTION #2079

Question 5451

Herbicide resistance in weed populations evolves most rapidly when:

Herbicides of multiple modes of action are rotated every season
A single herbicide or herbicides sharing the same mode of action are applied repeatedly in the same field, imposing strong directional selection pressure on the weed population — selecting for pre-existing resistant biotypes✔️
Herbicides are applied at sub-lethal doses to reduce crop phytotoxicity risk
Weeds are controlled exclusively through cultural methods

Correct Answer Logic:

Herbicide resistance evolution follows Darwinian selection: pre-existing resistant individuals (spontaneous mutations) survive repeated herbicide applications of the same MOA and reproduce, increasing resistance gene frequency generation by generation. Key risk factors: high selection pressure (same MOA every season), high weed fecundity, and short generation time. Phalaris minor resistance to isoproturon in Pakistan is a critical example.

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Basic Mathematics QUESTION #2889

Question 5452

What is the value of $x$ if $\frac{x}{4} + 5 = 8$?

12✔️
4
3
7

Correct Answer Logic:

$x/4 = 3 \implies x = 3 \times 4 = 12$.

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Chemistry QUESTION #472

Question 5453

Na may be denoted by __________ electron configuration notation

1s?2s?
[Ar] 4s?
[Ne] 3s?✔️
None of these

Correct Answer Logic:

Sodium: [Ne] 3s?

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Professional QUESTION #1842

Question 5454

Under Section 19(3), a civil servant who is dismissed or removed from service for reasons of discipline is not admissible to pension. However, the Government may sanction compassionate allowance not exceeding what fraction of the pension or gratuity that would have been admissible?

One-half
Two-thirds✔️
Three-quarters
One-third

Correct Answer Logic:

Section 19(3) provides that no pension is admissible to a civil servant dismissed or removed for disciplinary reasons, but the Government may sanction compassionate allowance not exceeding two-thirds of the pension or gratuity which would have been admissible had he been invalided from service on the date of dismissal or removal.

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Urdu QUESTION #5120

Question 5455

علامہ اقبال کی مشہور نظموں 'شکوہ' اور 'جوابِ شکوہ' کی ہیئت کیا ہے؟

مسدس✔️
مخمس
مربع
ان میں سے کوئی نہیں

Correct Answer Logic:

شکوہ اور جوابِ شکوہ مسدس کی ہیئت میں لکھی گئی ہیں۔ ہر بند چھ مصروں پر مشتمل ہے۔

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Mathematics QUESTION #1261

Question 5456

The transformation $T:\mathbb{R}^3\to\mathbb{R}^2$ defined by $T(x,y,z)=(|x|,\,y+z)$ is:

Linear
Not linear because it is not onto
Not linear because $T(-x,y,z)\neq -T(x,y,z)$✔️
Linear only for $x\geq0$

Correct Answer Logic:

A linear transformation requires $T(c\mathbf{v})=cT(\mathbf{v})$. Check: $T(-1,0,0)=(|-1|,0)=(1,0)$ but $-T(1,0,0)=-(1,0)=(-1,0)$. Since $T(-\mathbf{v})\neq -T(\mathbf{v})$, $T$ is NOT linear. The $|x|$ component violates homogeneity.

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Chemistry QUESTION #1089

Question 5457

The ratio of wavelengths of light absorbed by hydrogen atom for $n=2\to n=3$ and $n=4\to n=6$ transitions is:

$\dfrac{1}{9}$
$\dfrac{1}{4}$✔️
$\dfrac{1}{36}$
$\dfrac{1}{16}$

Correct Answer Logic:

For hydrogen: $\frac{1}{\lambda} = R_H\left(\frac{1}{n_1^2}-\frac{1}{n_2^2}\right)$. Transition 1 ($n=2\to3$): $\frac{1}{\lambda_1}=R_H\left(\frac{1}{4}-\frac{1}{9}\right)=R_H\cdot\frac{5}{36}$. Transition 2 ($n=4\to6$): $\frac{1}{\lambda_2}=R_H\left(\frac{1}{16}-\frac{1}{36}\right)=R_H\cdot\frac{5}{144}$. Ratio: $\frac{\lambda_1}{\lambda_2}=\frac{5/144}{5/36}=\frac{36}{144}=\frac{1}{4}$.

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Electrical Engineering QUESTION #2185

Question 5458

A $100\,\text{kVA}$, $11\,\text{kV}/400\,\text{V}$ transformer has iron losses $P_i = 500\,\text{W}$ and full-load copper losses $P_{cu} = 1200\,\text{W}$. The efficiency at half full-load and $0.8$ pf lagging is:

$98.0\%$✔️
$96.1\%$
$97.3\%$
$94.5\%$

Correct Answer Logic:

Output at half load $= 0.5\times100\times10^3\times0.8 = 40{,}000\,\text{W}$. Cu loss $= (0.5)^2\times1200 = 300\,\text{W}$. Iron loss $= 500\,\text{W}$ (constant). $\eta = \frac{40000}{40000+800}\times100 = \frac{40000}{40800} \approx 98.0\%$.

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Agronomy QUESTION #2037

Question 5459

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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Urdu QUESTION #5222

Question 5460

'آدے آنا' محاورہ ہے اس کا کیا مطلب ہے؟

لڑائی کرنا
درمیان میں آنا✔️
مدد کرنا
ان میں سے کوئی نہیں

Correct Answer Logic:

آدے آنا محاورے کا مطلب ہے بیچ میں آنا یا کسی معاملے میں مداخلت کرنا۔

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