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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3432

Question 5941

'Kwashiorkor' is a severe form of malnutrition caused by deficiency of:

Carbohydrates
Fats
Proteins✔️
Vitamins

Correct Answer Logic:

Often seen in children, characterized by edema (swollen belly).

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Security Measures to Maintain Law and Order QUESTION #7672

Question 5942

What does the ''rule of law'' signify?

Government actions must be based on law✔️
Laws should be created by the executive
Police can act independently of law
None of these

Correct Answer Logic:

The 'rule of law' is a fundamental principle that means government actions and authorities must be authorized by and based on law. Everyone, including government officials, is subject to and accountable under the law. It ensures legal accountability and prevents arbitrary use of power.

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Physics QUESTION #7320

Question 5943

A stone in free fall covers distances $h_1$, $h_2$, $h_3$ in successive 5-second intervals. The correct relation is:

$h_1 = h_2 = h_3$
$h_1 = 2h_2 = 3h_3$
$h_1 : h_2 : h_3 = 1 : 3 : 5$✔️
$h_2 = 3h_1$ and $h_3 = 3h_2$

Correct Answer Logic:

Distances in successive equal time intervals from rest are in the ratio of odd numbers: $1:3:5:7\ldots$

So $h_1 : h_2 : h_3 = 1 : 3 : 5$, i.e., $\mathbf{h_1 = \dfrac{h_2}{3} = \dfrac{h_3}{5}}$

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Boilers Mechanical Engineering QUESTION #2383

Question 5944

A necessary and sufficient condition for a linear feedback system to be stable is that:

All poles of the closed-loop transfer function have positive real parts
All poles of the closed-loop transfer function have negative real parts✔️
The gain $K$ is greater than 1
The system has no zeros in the right-half s-plane

Correct Answer Logic:

Stability condition: all poles of the closed-loop transfer function must have negative real parts (lie in the left-half s-plane). If any pole has a positive real part, the response grows without bound (unstable).

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Planning QUESTION #4978

Question 5945

In Ebenezer Howard's Garden City concept, what was the recommended maximum population?

10,000
32,000✔️
50,000
100,000

Correct Answer Logic:

Howard's Garden City model proposed a maximum population of 32,000 (30,000 in city proper plus 2,000 in agricultural belt) to maintain human scale, self-containment, and balance between town and country living.

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Islamic Studies QUESTION #7904

Question 5946

During drought, which Namaaz is offered for rain?

Salaat-e-Istasqa✔️
Salaat-e-Khisoo
Salaat e Kisoof
None of these

Correct Answer Logic:

Salaat-al-Istisqa is the special prayer for rain offered during drought. It consists of 2 rakats performed in congregation, similar to Eid prayer. The Imam delivers a sermon requesting Allah for rain, and people make sincere supplications. The Prophet (PBUH) performed this prayer when Medina faced drought.

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Biology QUESTION #7246

Question 5947

"Ordines Anomali" of Bentham and Hooker includes:

Seed plants showing abnormal forms of growth and development
Plants represented only in fossil state
Plants described in the literature but which Bentham and Hooker did not see in original
A few orders which could not be placed satisfactorily in the classification✔️

Correct Answer Logic:

In Bentham and Hooker's classification, Ordines Anomali ("anomalous orders") refers to a few plant orders/families that could not be placed satisfactorily within the main classification scheme due to their unusual or ambiguous characteristics. They were listed separately at the end.

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Physics QUESTION #7024

Question 5948

The central maximum in a single slit diffraction has an angular width of $60^\circ$ for a slit $1 \ \mu\text{m}$ wide. If two such slits are used in a YDSE setup with a screen $50 \text{ cm}$ away and a fringe width of $1 \text{ cm}$ is observed, what is the separation between the slits?

$75 \ \mu\text{m}$
$100 \ \mu\text{m}$
$25 \ \mu\text{m}$✔️
$50 \ \mu\text{m}$

Correct Answer Logic:

Angular width $2\theta = \frac{2\lambda}{a} = 60^\circ = \frac{\pi}{3} \text{ rad}$.

$\frac{\lambda}{a} = \frac{\pi}{6} \implies \lambda = \frac{\pi}{6} \times 1 \ \mu\text{m}$.

Fringe width $\beta = \frac{\lambda D}{d} = 1 \text{ cm} = 10^{-2} \text{ m}$.

$d = \frac{\lambda D}{\beta} = \frac{(\pi/6 \times 10^{-6}) \times 0.5}{0.01} \approx 26.1 \ \mu\text{m}$. The closest option is $25 \ \mu\text{m}$.

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Education QUESTION #6761

Question 5949

A subject specialist developing a physics test wants to ensure that the test measures "understanding of Newton's Laws" and not merely the ability to memorize formulae. Which type of validity evidence should be most rigorously gathered, and what procedure is most appropriate?

Content validity; compare test items with the textbook chapter headings
Construct validity; define the construct, identify sub-constructs, list indicators, write items for each indicator, and seek expert judgment and factor analysis✔️
Criterion validity; correlate test scores with past exam results
Consequence validity; survey students about whether the test was fair

Correct Answer Logic:

Construct validity is the evidence that a test measures the intended theoretical construct. For a nuanced construct like "understanding" (as opposed to memorization), one must: define the construct, identify its sub-constructs (e.g., conceptual understanding vs. procedural), write items targeting each, and validate through expert judgment and factor analysis. This is the rigorous process described in construct validity.

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General Abilities QUESTION #2877

Question 5950

Average of $12, 15, 18, 21, 24$ is:

15
18✔️
21
20

Correct Answer Logic:

Since the numbers are in an arithmetic progression, the average is the middle term: $18$.

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General Knowledge QUESTION #8627

Question 5951

Which Muslim scientist is credited with discovering sulfuric, nitric, and hydrochloric acids?

Muhammad Bin Zakaria Razi
Ibn al-Haytham
Avicenna (Bu Ali Sina)
Jabir Bin Hayyan✔️

Correct Answer Logic:

Jabir Bin Hayyan (Geber) is known for these discoveries.

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Boilers Mechanical Engineering QUESTION #2444

Question 5952

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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Math Physics Chemistry Biology QUESTION #518

Question 5953

Which bond is the potential source of chemical energy for cellular activities?

C-N✔️
C-O
C-H
H-O

Correct Answer Logic:

Answer key shows A but C-H bonds store most energy

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Home Economics QUESTION #6265

Question 5954

In therapeutic nutrition, the 'DASH' diet is specifically designed to manage which condition?

Type 1 Diabetes
Hypertension✔️
Phenylketonuria (PKU)
Celiac Disease

Correct Answer Logic:

DASH stands for Dietary Approaches to Stop Hypertension, focusing on reducing sodium and increasing potassium, calcium, and magnesium.

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Economics QUESTION #1710

Question 5955

According to the World Bank's income classification using GNI per capita (Atlas method), Pakistan is currently placed in which income category?

Low-income developing economy
Upper-middle-income economy
Lower-middle-income developing economy✔️
None of these

Correct Answer Logic:

The World Bank classifies Pakistan as a lower-middle-income country (LMIC). As of recent classifications, Pakistan's GNI per capita falls within the lower-middle-income range (approximately USD 1,136–4,465). It is above the low-income threshold but well below the upper-middle-income threshold. This classification affects Pakistan's access to concessional lending (IDA blend status) and its obligations under various international agreements.

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General Abilities QUESTION #3964

Question 5956

A train traveling between two locations is $10$ minutes behind schedule when moving at $40 \text{ mph}$ and $16$ minutes late at $30 \text{ mph}$. What is the total distance separating the two towns?

$720$ miles✔️
$12$ miles
$8\frac{6}{7}$ miles
$12\frac{7}{7}$ miles

Correct Answer Logic:

1

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Administration QUESTION #2947

Question 5957

What is the main characteristic of "Transactional Leadership"?

Inspiring followers through a shared vision of the future
Using rewards and punishments to ensure task completion✔️
Completely avoiding any interference in employee work
None of these

Correct Answer Logic:

Transactional leaders focus on the exchange between leader and follower, using "carrot and stick" methods to maintain routine.

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Nursing QUESTION #9248

Question 5958

A patient with pulmonary embolism (PE) in ICU has a BP of $80/50 \text{ mmHg}$, HR $130/\text{min}$, SpO$_2 = 84\%$, and signs of right heart failure on echocardiogram. What is the classification and MOST appropriate immediate treatment?

Submassive PE — start IV heparin infusion
Low-risk PE — give oral rivaroxaban
Massive PE — systemic thrombolysis with alteplase (if no contraindication)✔️
Submassive PE — surgical embolectomy immediately

Correct Answer Logic:

Correct Answer: C — Massive PE — systemic thrombolysis

PE Classification (ESC 2019):

Category	Criteria	Treatment
Massive (High Risk)	Hemodynamic instability: SBP $< 90 \text{ mmHg}$ or drop $\geq 40 \text{ mmHg}$ $> 15$ min	Systemic thrombolysis or surgical embolectomy
Submassive (Intermediate)	Hemodynamically stable + RV dysfunction or elevated troponin/BNP	Anticoagulation ± consider thrombolysis
Low Risk	Hemodynamically stable, no RV dysfunction	Anticoagulation (DOAC or heparin)

Alteplase regimen for massive PE: $100 \text{ mg}$ IV over 2 hours (or $0.6 \text{ mg/kg}$ over 15 min max $50 \text{ mg}$)

Absolute contraindications to thrombolysis include: prior intracranial hemorrhage, active bleeding, recent surgery $< 3$ weeks. If contraindicated → surgical embolectomy or catheter-directed thrombolysis.

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Boilers Mechanical Engineering QUESTION #2422

Question 5959

The thermal resistance for convection at a surface with heat transfer coefficient $h$ and surface area $A$ is:

$R_{th,conv} = h \cdot A$
$R_{th,conv} = h/(kA)$
$R_{th,conv} = 1/(hA)$✔️
$R_{th,conv} = A/h$

Correct Answer Logic:

Convective thermal resistance: $R_{th,conv}=1/(hA)$ (K/W). This follows from $q=hA(T_s-T_\infty)=\Delta T/R_{th,conv}$.

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Law QUESTION #9499

Question 5960

A and B are co-owners of a plot of land. A files a suit for partition without joining C, who also claims a share in the property. The Court proceeds ex parte against B and passes a preliminary decree for partition. C later claims the decree affects his right. What recourse does C have?

C cannot challenge the decree since he was not a party to the suit
C may apply to the Court to be impleaded as a necessary party and challenge the decree, or seek revision if a jurisdictional error is apparent; a decree passed without impleading a necessary party is liable to be set aside✔️
C can only file a fresh suit for his share
C's rights are permanently extinguished by the ex parte decree

Correct Answer Logic:

A co-owner whose presence is necessary for complete adjudication of a partition suit is a necessary party. Proceeding without him vitiates the decree insofar as it affects his rights. C may apply to be added under Order I Rule 10 CPC during the pendency of any appeal or may challenge the decree through appropriate proceedings.

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More Options

Suggest a Question

Category	Criteria	Treatment
Massive (High Risk)	Hemodynamic instability: SBP \(< 90 \text{ mmHg}\) or drop \(\geq 40 \text{ mmHg}\) \(> 15\) min	Systemic thrombolysis or surgical embolectomy
Submassive (Intermediate)	Hemodynamically stable + RV dysfunction or elevated troponin/BNP	Anticoagulation ± consider thrombolysis
Low Risk	Hemodynamically stable, no RV dysfunction	Anticoagulation (DOAC or heparin)