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Physics QUESTION #1156

When the net wave intensity is greater than the individual intensities, the interference of the waves is said to be:

Constructive✔️
Destructive
Both (A) & (B)
None of these

Correct Answer Logic:

In constructive interference, waves add in phase, resulting in a net intensity greater than the sum of individual intensities. The amplitude is maximum when path difference $= n\lambda$ (where $n = 0, 1, 2, \ldots$).

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3333

Question 4902

Which type of microscope is used to see the detailed 'Internal' structures of a cell?

Light Microscope
Scanning Electron Microscope (SEM)
Transmission Electron Microscope (TEM)✔️
Magnifying glass

Correct Answer Logic:

TEM passes electrons through thin slices of a specimen for high-resolution internal imaging.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3202

Question 4903

Which hormone acts on the collecting ducts to increase water reabsorption (concentrating the urine)?

Insulin
Aldosterone
Anti-Diuretic Hormone (ADH)✔️
Thyroxine

Correct Answer Logic:

ADH (Vasopressin) inserts aquaporins into the duct walls to save water.

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Civil Engineering QUESTION #2133

Question 4904

The critical path in a CPM (Critical Path Method) network is defined as:

The longest path from start to finish of the project, determining the minimum project duration — activities on the critical path have zero float and any delay directly delays project completion✔️
The path with the most activities from start to finish
The path with the highest total cost of activities
The shortest path from project start to finish

Correct Answer Logic:

The critical path is the longest duration path through the project network from start to finish. It defines the minimum possible project duration. Activities on the critical path have Total Float (TF) = 0: TF = Late Start − Early Start = Late Finish − Early Finish. Any delay to a critical activity delays the entire project by the same duration. Non-critical activities have positive float — they can be delayed without affecting project completion.

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Civil Procedure QUESTION #5671

Question 4905

Under Rule 11, a motion for sanctions is served on the opposing party. The opposing party has how many days to withdraw or correct the challenged paper before the motion can be filed with the court?

14 days.
21 days.✔️
28 days.
30 days.

Correct Answer Logic:

Rule 11(c)(2) provides a 'safe harbor' period of 21 days after service for the challenged paper to be withdrawn or appropriately corrected.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3683

Question 4906

Which drug is used to treat 'Dry Skin' and is a fixed oil from 'Prunus amygdalus'?

Almond oil✔️
Peppermint oil
Clove oil
Fennel oil

Correct Answer Logic:

Almond oil is a soothing emollient.

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5776

Question 4907

Lactulose treats constipation through which mechanism?

Direct mucosa stimulation
Osmotic effect via degradation to organic acids✔️
Lubrication
Blocking Acetylcholine

Correct Answer Logic:

Bacterial degradation of lactulose creates an osmotic gradient that retains water.

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Mathematics QUESTION #4153

Question 4908

The center of mass of a uniform solid hemisphere of radius $R$ lies on the axis of symmetry at distance from the base equal to:

$\frac{R}{2}$
$\frac{3R}{8}$✔️
$\frac{3R}{4}$
$\frac{R}{4}$

Correct Answer Logic:

For a solid hemisphere, center of mass is at $\frac{3R}{8}$ from the base (or $\frac{5R}{8}$ from the curved surface).

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Islamic Studies QUESTION #227

Question 4909

Ghazwa Khandaq is also called:

Yum Al-Furqan
Ghazwa Zaat-ul-Salsil
Ghazwa al-Ahzab✔️
None of these

Correct Answer Logic:

It is known as the Battle of the Trench or the Battle of the Confederates (Al-Ahzab).

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Basic Mathematics QUESTION #2831

Question 4910

Simplify: $\dfrac{2^5 \times 4^3}{8^2 \times 2}$

4
8✔️
16
32

Correct Answer Logic:

$2^5 = 32$, $4^3 = (2^2)^3 = 2^6 = 64$, $8^2 = (2^3)^2 = 2^6 = 64$. Numerator $= 2^5 \times 2^6 = 2^{11}$. Denominator $= 2^6 \times 2^1 = 2^7$. Result $= 2^{11-7} = 2^4 = 16$.

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Mechanical Engineering QUESTION #2401

Question 4911

The continuity equation for steady, incompressible flow through a conduit states:

$A_1 V_1 + A_2 V_2 = \text{const}$
$A_1 V_1 = A_2 V_2 = Q = \text{const}$✔️
$\rho_1 V_1 = \rho_2 V_2$
$A_1 / V_1 = A_2 / V_2$

Correct Answer Logic:

For steady incompressible flow, the continuity equation from conservation of mass: $Q=A_1V_1=A_2V_2=\text{const}$ where $Q$ is volumetric flow rate (m³/s).

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #2965

Question 4912

The term 'Tincture' refers to a pharmaceutical preparation that is:

A sugar-based solution
An alcoholic or hydro-alcoholic solution✔️
A compressed solid tablet
A sterile eye drop

Correct Answer Logic:

Tinctures are alcoholic or hydro-alcoholic solutions prepared from vegetable materials or chemical substances.

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Dairy Food Science and Technology QUESTION #5906

Question 4913

The whey protein $\beta$-lactoglobulin ($\beta$-Lg) upon heating above $70^{\circ}\text{C}$ causes which important effect?

It contributes to the yellow color of milk
It unfolds and binds to $\kappa$-casein via disulfide bonding ($\text{Cys}_{121}$), altering rennetability and improving heat stability✔️
It is the primary source of calcium in milk
It inhibits bacterial growth in raw milk

Correct Answer Logic:

$\beta$-Lactoglobulin ($\approx 3.2\;\text{g/L}$ in bovine milk) denatures above $70^{\circ}\text{C}$, exposing free sulfhydryl groups ($\text{Cys}_{121}$) that form disulfide bonds with $\kappa$-casein. This complex reduces rennet coagulation efficiency but enhances heat stability of the casein micelle.

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CISA QUESTION #1777

Question 4914

Which computer-assisted audit tool (CAAT) is specifically engineered to run simulated transactions alongside real transactions in a live system?

Continuous and intermittent simulation
Embedded program audit hooks
Embedded audit module✔️
Online event monitor

Correct Answer Logic:

An embedded audit module (EAM) is embedded directly within the application and processes dummy transactions concurrently with genuine ones. Its purpose is to verify that the production system is operating correctly without disrupting normal transaction processing.

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City and Regional Planning QUESTION #4966

Question 4915

Which urban planning concept emphasizes 15-minute accessibility to daily needs?

Garden City
15-Minute City✔️
Radburn Layout
Satellite Town

Correct Answer Logic:

The 15-Minute City concept, popularized by Carlos Moreno, aims to create neighborhoods where residents can access daily needs (work, shopping, education, healthcare) within a 15-minute walk or bike ride.

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Agronomy QUESTION #2026

Question 4916

Irrigation water use efficiency (WUE) is formally defined as:

The ratio of water stored in the root zone to total water applied
The ratio of economic crop yield to the total amount of water consumed by evapotranspiration
$\dfrac{\text{Crop yield (kg/ha)}}{\text{Water applied (mm or m}^3\text{)}}$ expressed as kg per mm or kg per $m^3$✔️
The ratio of water infiltrated to water applied at the field inlet

Correct Answer Logic:

Water use efficiency (WUE) = $\dfrac{\text{Yield (kg/ha)}}{\text{Water applied or consumed (mm)}}$. It measures how efficiently water is converted into economic yield. Maximizing WUE is critical in water-scarce environments and forms the basis of deficit irrigation strategies.

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Chemistry QUESTION #4348

Question 4917

In propene, the $\pi$-bond is formed by sideway overlap of:

s-orbitals
p-orbitals✔️
$sp^3$ hybrid orbitals
$sp^2$ hybrid orbitals

Correct Answer Logic:

In propene ($CH_3CH=CH_2$), the double bond carbons are $sp^2$ hybridized. The $\pi$-bond is formed by the lateral (sideway) overlap of unhybridized $p$-orbitals perpendicular to the molecular plane.

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Urdu QUESTION #1401

Question 4918

ماہِ تمام کس شاعرہ کا کلیات ہے؟

کشور ناہید
پروین شاکر
فہمیدہ ریاض
ادا جعفری✔️

Correct Answer Logic:

''ماہِ تمام'' ادا جعفری کا کلیات ہے۔ ادا جعفری (1924–2015) پاکستان کی پہلی اہم خاتون شاعرہ مانی جاتی ہیں۔ ان کا اصل نام عزیز جہاں تھا۔ انہوں نے محبت، نسائی احساسات اور انسانی رشتوں کو اپنی شاعری کا موضوع بنایا۔ ان کے دیگر مجموعوں میں ''میں ساز ڈھونڈتی رہی'' شامل ہے۔

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Mechanical Engineering QUESTION #2444

Question 4919

The transmissibility (TR) in vibration isolation represents:

Output force at support divided by static force
The ratio of force transmitted to the foundation to the applied excitation force: $TR = \sqrt{\frac{1+(2\zeta r)^2}{(1-r^2)^2+(2\zeta r)^2}}$ where $r=p/\omega_n$✔️
The ratio of damped to undamped amplitude
The ratio of kinetic to potential energy

Correct Answer Logic:

Transmissibility: $TR=F_{transmitted}/F_0=\sqrt{\frac{1+(2\zeta r)^2}{(1-r^2)^2+(2\zeta r)^2}}$. For effective isolation, TR < 1 requires $r > \sqrt{2}$.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3518

Question 4920

'Cardamom' (Elaichi) is used as a:

Carminative and Flavoring agent✔️
Strong poison
Antibiotic
Sedative

Correct Answer Logic:

Cardamom is widely used to relieve gas and improve taste.

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