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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3682

Question 1

'Starch' grains can be identified under a microscope by their characteristic:

Color
Hilum and Striations✔️
Weight
Taste

Correct Answer Logic:

The shape and position of the hilum help identify the source of starch (e.g., Potato vs Maize).

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Physics and Math QUESTION #744

Question 2

If a magnet is in a non-uniform magnetic field it will experience:

Attraction
Repulsion
Neutral
None✔️

Correct Answer Logic:

A magnet placed in a non-uniform magnetic field experiences a net force (translational) as well as a torque. The exact effect depends on orientation; the paper marks 'None' as correct.

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Boilers Mechanical Engineering QUESTION #4025

Question 3

'Differential Pressure' across an air filter indicates:

The speed of the boiler
How clogged or dirty the filter is✔️
The temperature of the room
The price of the air

Correct Answer Logic:

High 'DP' means the filter needs cleaning or replacement.

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City and Regional Planning QUESTION #4969

Question 4

In the Gravity Model for trip distribution, if the distance between zones A and B doubles while attractions remain constant, the trips between them will:

Reduce to half
Reduce to one-fourth✔️
Double
Remain unchanged

Correct Answer Logic:

The Gravity Model formula $T_{ij} = \frac{P_i \times A_j}{d_{ij}^n}$ shows trips are inversely proportional to distance raised to a power (typically 2). When distance doubles: $\frac{1}{(2d)^2} = \frac{1}{4d^2}$, reducing trips to one-fourth.

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Biology QUESTION #4250

Question 5

Receptors that are located in the retina of eye are called:

Merkel disc
Ruffini endings
Pacinian corpuscles
Rod and Cone✔️

Correct Answer Logic:

Rod and cone cells are photoreceptors in retina.

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Urdu QUESTION #5173

Question 6

رسالہ 'تہذیب الاخلاق' کس نے جاری کیا؟

انجمن حمایتِ اسلام
انجمن اسلامیہ امرتسر
سر سید احمد خان✔️
مولانا مودودی

Correct Answer Logic:

تہذیب الاخلاق سر سید احمد خان نے 1870ء میں جاری کیا جو سماجی و اخلاقی اصلاح کا نام تھا۔

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The Title 28 of the United States Code QUESTION #3744

Question 7

A state passes a law that prohibits the sale of any out-of-state milk that does not meet a specific 'purity standard' that is much higher than the federal standard. The law effectively stops all out-of-state milk sales. This law is likely unconstitutional under:

The Tenth Amendment.
The Dormant Commerce Clause.✔️
The Privileges and Immunities Clause.
The Supremacy Clause.

Correct Answer Logic:

The Dormant Commerce Clause prohibits states from passing legislation that discriminates against or unduly burdens interstate commerce.

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Basic Mathematics QUESTION #4520

Question 8

What is $\sqrt{\frac{25}{9}}$?

$\frac{5}{3}$✔️
$\frac{25}{9}$
$\frac{5}{9}$
$\frac{2.5}{3}$

Correct Answer Logic:

$\sqrt{\frac{a}{b}} = \frac{\sqrt{a}}{\sqrt{b}}$. So $\sqrt{\frac{25}{9}} = \frac{\sqrt{25}}{\sqrt{9}} = \frac{5}{3}$

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Psychology QUESTION #1463

Question 9

Which type of validity is concerned with whether the test truly measures the concept it is intended to measure?

Content validity
Construct validity✔️
Criterion-related validity
Face validity

Correct Answer Logic:

Construct validity refers to the degree to which a test actually measures the theoretical construct (psychological concept) it purports to measure. For example, does an IQ test truly measure 'intelligence' as theoretically defined? Content validity concerns coverage of all relevant aspects of the construct; criterion-related validity concerns prediction of real-world outcomes; face validity is about surface appearance only.

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Pakistan Affairs QUESTION #4660

Question 10

Pakistan received observer status in which international organization around 2005?

OECD
Gulf Cooperation Council
Shanghai Cooperation Organization✔️
ASEAN

Correct Answer Logic:

Pakistan was granted observer status in the Shanghai Cooperation Organization (SCO) in 2005 during the Astana summit.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3106

Question 11

Which vein is commonly used for venipuncture (drawing blood) in the arm?

Saphenous vein
Median cubital vein✔️
Jugular vein
Femoral vein

Correct Answer Logic:

The median cubital vein in the antecubital fossa is the most common site for blood draws.

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Biology QUESTION #4263

Question 12

Which of the following muscle types are involuntary in action?

Skeletal and smooth
Skeletal and cardiac
Cardiac and smooth✔️
Smooth muscle only

Correct Answer Logic:

Cardiac muscle (heart) and smooth muscle (visceral organs) are both involuntary — they function without conscious control, unlike skeletal muscle.

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Chemistry QUESTION #437

Question 13

The extent of un-saturation in a fat is expressed as its

Acid number
Iodine number✔️
Saponification number
None of these

Correct Answer Logic:

Iodine number measures unsaturation

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Agronomy QUESTION #2099

Question 14

The mechanism by which salinity reduces crop growth involves two distinct components. Which correctly identifies both?

Osmotic stress (reducing water availability) followed by ion-specific toxicity (Na⁺ and Cl⁻ accumulation in leaves causing metabolic disruption) — the two-phase growth response model of Munns✔️
Direct soil pH elevation and nutrient precipitation causing deficiency of all macronutrients simultaneously
Physical blockage of root cell membranes by salt crystals preventing water absorption
Increased soil bulk density due to Na⁺-induced clay dispersion reducing root penetration

Correct Answer Logic:

Munns' two-phase model: Phase 1 — osmotic effect (immediate, similar to drought): high external salt lowers soil water potential, reducing water uptake; Phase 2 — ion-specific toxicity (gradual, days-weeks): Na⁺ and Cl⁻ accumulate in transpiring leaves exceeding compartmentation capacity, damaging photosynthetic machinery, enzymes, and membranes. Salt-tolerant crops manage both phases through osmotic adjustment and ion exclusion/compartmentation.

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Chemistry QUESTION #436

Question 15

Which bond will break when electrophile attacks an alcohol?

O?H✔️
C?O
Both A and B
None of these

Correct Answer Logic:

Electrophile attacks the O-H bond in alcohols

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Islamic Studies QUESTION #241

Question 16

Shaykh Ahmad Sirhandi's (Mujaddid Alif Sani) line of Sufism was:

Qadiriya
Suhrawardiya
Chishtiyya
None of these✔️

Correct Answer Logic:

He belonged to the Naqshbandiya order.

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Professional QUESTION #1934

Question 17

Under Schedule VI which body/authority submits cases to the President for orders in his discretion?

All Federal Divisions for their respective subjects
Only the Cabinet Division (for appointment of caretaker PM) and the Parliamentary Affairs Division (for dissolution of National Assembly under Article 58(2))✔️
Only the Parliamentary Affairs Division
The Prime Minister on advice of the Cabinet

Correct Answer Logic:

Schedule VI (Rule 15-A(2)) lists only two categories of cases for the President's orders in his own discretion: (1) Appointment of Care-taker Prime Minister under Article 224(1A) — Cabinet Division; and (2) Dissolution of National Assembly under Article 58(2) — Parliamentary Affairs Division.

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English QUESTION #2693

Question 18

Identify the correct structure: 'Hardly had he left ___ it started raining.'

than
when✔️
then
after

Correct Answer Logic:

The correlative conjunction 'Hardly' is always paired with 'when'.

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General Knowledge QUESTION #2627

Question 19

The ATX form factor is most commonly associated with which computer component?

RAM modules
CPU cooling systems
Hard disk drives
Motherboards✔️

Correct Answer Logic:

ATX (Advanced Technology eXtended) is the most common form factor for motherboards. Form factor refers to the size and shape specifications. ATX defines the physical dimensions, mounting hole positions, and power connector layout of the most widely used motherboards in desktop computers.

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Mechanical Engineering QUESTION #2524

Question 20

Poisson's relations for a rotating reference frame with angular velocity $\boldsymbol{\omega}$ give the time derivatives of unit vectors $\hat{i},\hat{j},\hat{k}$ as:

$\dot{\hat{i}}=\hat{i}+\boldsymbol{\omega}$
$\dot{\hat{i}}=\boldsymbol{\omega}\times\hat{i}$✔️
$\dot{\hat{i}}=\boldsymbol{\omega}\cdot\hat{i}$
$\dot{\hat{i}}=\hat{i}/\omega$

Correct Answer Logic:

Poisson's relations state that the time derivatives of the rotating unit vectors are: $\dot{\hat{i}}=\boldsymbol{\omega}\times\hat{i}$, $\dot{\hat{j}}=\boldsymbol{\omega}\times\hat{j}$, $\dot{\hat{k}}=\boldsymbol{\omega}\times\hat{k}$.

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