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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3224

Question 1721

The 'Hypothalamus' acts as the body's thermostat. To COOL the body, it triggers:

Vasoconstriction
Shivering
Vasodilation and Sweating✔️
Increased metabolic rate

Correct Answer Logic:

Dilation of skin vessels and evaporation of sweat dissipate heat.

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Security Measures to Maintain Law and Order QUESTION #7681

Question 1722

What is the primary purpose of the Security Force?

Protection of the buildings and individuals inside✔️
Protocol for civilian individuals
To cause violence
All of these

Correct Answer Logic:

The primary purpose of security forces, particularly specialized units like ASF, is to protect buildings, infrastructure, and individuals inside from threats. They provide physical security, access control, and emergency response to ensure safety and security.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3018

Question 1723

'Lanolin' is an absorption base also known as:

Soft Paraffin
Wool Fat✔️
Beeswax
Hard Paraffin

Correct Answer Logic:

Lanolin is the purified fat-like substance obtained from sheep's wool.

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Pakistan Affairs QUESTION #598

Question 1724

Pakistan became Member of the UN General Assembly in:

September 1947✔️
January 1948
September 1948
None of These

Correct Answer Logic:

Pakistan joined the United Nations on September 30, 1947.

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Ability / HR / Governance / Special Education QUESTION #1899

Question 1725

Under Rule 6(4) an Inquiry Officer must hear a case from day to day. In case of adjournment what is normally the maximum period of a single adjournment?

3 days
1 month
1 week✔️
2 weeks

Correct Answer Logic:

Rule 6(4) provides that normally no adjournment shall be for more than a week and every adjournment with reasons shall be reported forthwith to the authorized officer.

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MCQs Section QUESTION #4876

Question 1726

Correct antonym of "SONAR" is

Apparatus to detect something in the air✔️
Locate objects under water
Measure rain
Anticipate earthquake

Correct Answer Logic:

SONAR (Sound Navigation and Ranging) is used to detect objects underwater using sound waves. Its functional opposite would be a system that detects things above water or in the air.

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5760

Question 1727

Succinylcholine administration initially produces short-lasting muscle twitching known as:

Miosis
Fasciculation✔️
Bradycardia
Tachyphylaxis

Correct Answer Logic:

Succinylcholine initially causes depolarization resulting in muscle twitching (fasciculation).

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Chemistry QUESTION #7397

Question 1728

Which one of the following orders is NOT in accordance with the stated property?

$\text{F}_2 > \text{Cl}_2 > \text{Br}_2 > \text{I}_2$: bond dissociation energy✔️
$\text{F}_2 > \text{Cl}_2 > \text{Br}_2 > \text{I}_2$: oxidising power
$\text{HI} > \text{HBr} > \text{HCl} > \text{HF}$: acidic property in water
$\text{F} > \text{Cl} > \text{Br} > \text{I}$: electronegativity

Correct Answer Logic:

Bond dissociation energies of halogens:
$\text{Cl}_2 > \text{Br}_2 > \text{F}_2 > \text{I}_2$

F₂ has an anomalously low bond energy (158 kJ/mol) due to lone pair repulsion in the small F atom, making $\text{Cl}_2$ stronger. So the order $\text{F}_2 > \text{Cl}_2$ for bond dissociation energy is incorrect.

All other options are correct: oxidising power, acid strength of HX in water, and electronegativity all follow the stated orders.

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General Abilities QUESTION #2883

Question 1729

If $x:15 :: 4:3$, what is the value of $x$?

12
20✔️
25
10

Correct Answer Logic:

Product of means $=$ Product of extremes. $3x = 60 \implies x = 20$.

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Physics QUESTION #4409

Question 1730

The protons in the nucleus of an atom DO NOT exit due to:

Electromagnetic force
Gravitational Force
Weak Nuclear Force
Strong Nuclear Force✔️

Correct Answer Logic:

Although protons repel each other due to electromagnetic force, they are held together in the nucleus by the strong nuclear force, which is the strongest of the four fundamental forces and acts at very short ranges ($\approx 10^{-15}\ m$).

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Home Economics QUESTION #6262

Question 1731

Which nutrient is the primary source of energy for the human brain?

Glucose✔️
Amino Acids
Fatty Acids
Cellulose

Correct Answer Logic:

Glucose is the main metabolic fuel for the brain under normal physiological conditions.

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Planning QUESTION #4996

Question 1732

In transportation capacity analysis, what is the theoretical maximum capacity (vehicles/hour) for one lane at 100 km/h with 2-second headway?

1,000
1,200
1,500
1,800✔️

Correct Answer Logic:

Capacity = $\frac{3600 \text{ seconds/hour}}{\text{headway in seconds}} = \frac{3600}{2} = 1800$ vehicles/hour/lane. This represents maximum theoretical throughput; practical capacity is typically 70-80% of theoretical due to speed variations and driver behavior.

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Boilers Mechanical Engineering QUESTION #2391

Question 1733

The Laplace transform of a unit step function $u(t)$ is:

$\mathcal{L}\{u(t)\} = 1$
$\mathcal{L}\{u(t)\} = 1/s$✔️
$\mathcal{L}\{u(t)\} = 1/s^2$
$\mathcal{L}\{u(t)\} = s$

Correct Answer Logic:

The Laplace transform of the unit step function: $\mathcal{L}\{u(t)\}=\int_0^\infty e^{-st}dt=1/s$. The ramp $tu(t)$ has transform $1/s^2$; the impulse $\delta(t)$ has transform 1.

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Chemistry QUESTION #1071

Question 1734

Statement I: A hypothetical diatomic molecule with bond order zero is quite stable. Statement II: As bond order increases, the bond length increases.

Statement I is true but Statement II is false
Statement I is false but Statement II is true
Both Statement I and Statement II are true
Both Statement I and Statement II are false✔️

Correct Answer Logic:

Statement I is false — a bond order of zero means no net bonding, so the molecule is NOT stable (e.g., He$_2$ does not exist). Statement II is false — as bond order increases, bond length DECREASES (stronger, shorter bonds). Both statements are false.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3464

Question 1735

'Cis' and 'Trans' fats refer to the arrangement of atoms around a:

Single bond
Double bond✔️
Phosphate group
Nitrogen atom

Correct Answer Logic:

Trans-fats are unsaturated fats with a specific geometric configuration often linked to heart disease.

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Urdu QUESTION #5127

Question 1736

درست محاورہ کون سا ہے: آبرو پر .... لگانا۔

بٹہ✔️
مٹی
برمتی
ان میں سے کوئی نہیں

Correct Answer Logic:

درست محاورہ ہے: 'آبرو پر بٹہ لگانا' یعنی کسی کی عزت و وقار کو نقصان پہنچانا۔

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Verbal Reasoning QUESTION #8111

Question 1737

If $0 < st < 1$, which of the following could be true?

$s < -1$ and $t > 0$
$s < -1$ and $t < -1$✔️
$s > -1$ and $t < -1$
$s > 1$ and $t < -1$

Correct Answer Logic:

We need $0 < st < 1$, meaning $st$ is a small positive number. This requires $s$ and $t$ to have the same sign.

Option A: $s < -1, t > 0$ → $st < 0$. Not possible.
Option B: $s < -1, t < -1$ → both negative, so $st > 0$. For example $s = -2, t = -0.3$: $st = 0.6$, which satisfies $0 < st < 1$. ✓
Option C: $s > -1, t < -1$ → could give $st$ negative or positive depending on sign of $s$. If $s = 0.5, t = -2$: $st = -1 < 0$. Not valid for all cases.
Option D: $s > 1, t < -1$ → $st < -1 < 0$. Not possible.

Option B is the one that can satisfy the condition.

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5808

Question 1738

Which section of the Drug Act deals with the 'Powers of Inspectors'?

Section 18
Section 19✔️
Section 20
Section 21

Correct Answer Logic:

Section 19 of the Drug Act 1976 outlines the powers of inspectors[cite: 7].

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Chemistry QUESTION #428

Question 1739

__________ extraction is controlled by partition law.

Iodine
Benzoic acid
Solvent✔️
Stationery

Correct Answer Logic:

Solvent extraction follows partition law

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HR and Management QUESTION #6446

Question 1740

Job insecurity as an individual challenge in modern HRM is primarily driven by:

Poor individual performance and low productivity
Downsizing and restructuring in competitive environments✔️
Lack of educational qualifications
Inadequate compensation packages

Correct Answer Logic:

Job insecurity stems from the era of downsizing and restructuring. Even profitable companies lay off workers, arguing layoffs are essential in cutthroat competition. Being able to count on steady jobs and promotions is a thing of the past, causing chronic stress for employees.

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