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Physics QUESTION #1185

The rate and direction of electromagnetic energy transferred in space.✔️
The amount of electromagnetic energy transferred in different forms of energy.
Loss of electromagnetic energy in a medium.
The flow of thermal energy in a certain direction.

Correct Answer Logic:

The Poynting vector $\vec{S} = \frac{1}{\mu_0}(\vec{E} \times \vec{B})$ represents the instantaneous power per unit area (energy flux density) carried by an electromagnetic wave. Its direction gives the direction of energy propagation and its magnitude gives the rate of energy transfer per unit area (W/m²).

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Pakistan Affairs QUESTION #298

Question 8762

What significant impact was caused to Pakistan by direct Military rule?

Corrosion of civil liberties
Unstable civil institutions✔️
Economic stagnation
Encouragement of FDI

Correct Answer Logic:

Frequent interventions weakened the growth and stability of democratic institutions.+1

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Biology Zoology Botany QUESTION #10803

Question 8763

How many molecules of $\text{CO}_2$ are produced from one acetyl group of acetyl-CoA in one complete turn of the citric acid cycle?

3
5
1
2✔️

Correct Answer Logic:

One complete turn of the citric acid (Krebs) cycle oxidises one acetyl group ($\text{C}_2$) and produces 2 molecules of CO₂: one at the isocitrate dehydrogenase step and one at the α-ketoglutarate dehydrogenase step. The overall equation per acetyl-CoA is: $\text{Acetyl-CoA} + 3\text{NAD}^+ + \text{FAD} + \text{ADP} + \text{P}_i + 2\text{H}_2\text{O} \rightarrow 2\text{CO}_2 + 3\text{NADH} + \text{FADH}_2 + \text{ATP} + \text{CoA}$.

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Aptitude QUESTION #10993

Question 8764

A solid consists of a hemisphere of radius $R$ surmounted by a right circular cone of the same base radius and height $h$. If the total volume equals the volume of a sphere of radius $R$, what is $h$?

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

Correct Answer Logic:

Volume of hemisphere: $\frac{2}{3}\pi R^3$. Volume of cone: $\frac{1}{3}\pi R^2 h$. Total = $\frac{4}{3}\pi R^3$ (sphere volume). So $\frac{2}{3}\pi R^3 + \frac{1}{3}\pi R^2 h = \frac{4}{3}\pi R^3$. Simplifying: $2R + h = 4R$, giving $h = 2R$.

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Biomedical Sciences QUESTION #3809

Question 8765

Prolonged dietary iodine deficiency in adults is most likely to lead to which thyroid disorder?

Myxoedema✔️
Toxic adenoma of the thyroid
Thyrotoxicosis
Subclinical hyperthyroidism

Correct Answer Logic:

Chronic iodine deficiency leads to reduced thyroid hormone production, causing hypothyroidism and its clinical manifestation myxoedema, characterised by non-pitting oedema, dry skin, and mental slowing.

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Civil Engineering QUESTION #6592

Question 8766

In the finite element method, the value of a shape function evaluated at its own node is equal to:

1✔️
−1
Any arbitrary value

Correct Answer Logic:

Shape functions are defined such that $N_i = 1$ at node $i$ and $N_i = 0$ at all other nodes. This is a fundamental property ensuring the interpolation correctly reproduces nodal values.

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Physics QUESTION #7843

Question 8767

Lenz's law is consistent with:

Ampere's law
Faraday's law
Conservation of energy✔️
Ohm's law

Correct Answer Logic:

Lenz's law ensures energy conservation; induced current opposes change, so work must be done.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3109

Question 8768

What is the primary muscle involved in 'Inspiration' (breathing in)?

Intercostal muscle
Diaphragm✔️
Abdominal muscle
Pectoralis major

Correct Answer Logic:

When the diaphragm contracts and flattens, the volume of the thoracic cavity increases, drawing air in.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3298

Question 8769

'IgE' antibodies are primarily involved in which physiological process?

Blood clotting
Allergic reactions and parasite defense✔️
Digestion
Oxygen transport

Correct Answer Logic:

IgE binds to mast cells and triggers the release of histamine.

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English QUESTION #8504

Question 8770

The car in front is slowing _______.

in
on
about
down✔️

Correct Answer Logic:

'Slowing down' means reducing speed.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3015

Question 8771

A 'Paste' differs from an ointment because it contains:

A higher percentage of insoluble solids✔️
More water
Alcohol
Volatile oils

Correct Answer Logic:

Pastes contain a high concentration (often $20-50\%$) of finely powdered solids.

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Math Physics Chemistry Biology QUESTION #794

Question 8772

The comparative rate at which solute moves in paper chromatography depends upon $R_f$ value of:

Solute✔️
Solution
Solvent
None

Correct Answer Logic:

The $R_f$ (retention factor) value is specific to the solute and describes how far it travels relative to the solvent front in chromatography.

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MCQs Section QUESTION #4875

Question 8773

Correct antonym of "DEMOGRAPHIC" is

Relating to the study of population
Demons
Communications
Government✔️

Correct Answer Logic:

Demographic relates to the structure of a population. Among the options, 'government' represents a contrasting concept focusing on political authority rather than population data.

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MCQs Section QUESTION #5244

Question 8774

آسمان پر اڑنا سے کیا مراد ہے؟

غرور کرنا✔️
گالیاں دینا
ٹالنا
غرور کا سر نیچا

Correct Answer Logic:

آسمان پر اڑنا محاورے کا مطلب ہے انتہائی مغرور ہونا یا تکبر کرنا۔

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5777

Question 8775

Acetazolamide is primarily used to treat:

Hypotension
Open-angle glaucoma✔️
Diarrhea
Muscle spasms

Correct Answer Logic:

It inhibits carbonic anhydrase to reduce intraocular pressure.

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Therapeutics and Patient Care QUESTION #3897

Question 8776

Potassium supplementation is contraindicated when a patient is concurrently using which of the following diuretics?

Chlorthalidone
Hydrochlorothiazide
Furosemide
Amiloride✔️

Correct Answer Logic:

Amiloride is a potassium-sparing diuretic. Co-administration of potassium supplements risks dangerous hyperkalaemia, unlike thiazide or loop diuretics which cause potassium loss.

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Education QUESTION #7588

Question 8777

Which assessment technique best captures student attitudes and values?

Objective test
Questionnaire
Rating scale✔️
Matching test

Correct Answer Logic:

Rating scales allow students to express degrees of agreement or frequency, making them effective for measuring subjective constructs like attitudes, values, and feelings.

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Pakistan Affairs QUESTION #141

Question 8778

Afghanistan and Pakistan Transit Trade Agreement (APTTA) was signed on:

28th July, 2008
28th July, 2009
28th July, 2010✔️
28th July, 2011

Correct Answer Logic:

The revised APTTA was signed on July 28, 2010, in Kabul.

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Planning QUESTION #4955

Question 8779

What is the main advantage of GIS over traditional mapping?

Lower cost
Spatial analysis and data integration capabilities✔️
Simpler to use
Requires less training

Correct Answer Logic:

GIS enables sophisticated spatial analysis, multi-layered data integration, dynamic querying, and modeling capabilities far beyond traditional static maps, supporting complex planning decisions.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3610

Question 8780

'Agar' is a mucilaginous substance obtained from:

Land plants
Seaweeds (Red Algae)✔️
Animal bones
Fungi

Correct Answer Logic:

Agar is derived from Gelidium and Gracilaria species.

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