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Physics QUESTION #4397

An angular displacement of $90°$ is equal to:

One-fourth revolution✔️
One-third revolution
One-half revolution
One complete revolution

Correct Answer Logic:

One complete revolution $= 360°$. Therefore $90° = \dfrac{90}{360} = \dfrac{1}{4}$ of a revolution. Angular displacement of $90°$ equals one-fourth revolution.

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Psychology QUESTION #9889

Question 1722

When psychological tests are used in personnel selection, an important concern is:

Cost
Ease of administration
Validity✔️
Objectivity

Correct Answer Logic:

Validity — whether the test predicts job performance and measures relevant competencies — is paramount in employment testing. An invalid test, however cheap or easy, fails its purpose and may create legal liability.

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Geography QUESTION #6327

Question 1723

In the Rostow Stages of Economic Growth model, 'take-off' is characterized by three conditions:

Investment rate rising to above 10% of national income
Development of leading manufacturing sectors with high growth rates
Institutional framework supporting growth

Which statements are correct?

Only statement 1
Statements 1 and 2
Statements 2 and 3
All three statements✔️

Correct Answer Logic:

Rostow's 'take-off' stage requires: (1) productive investment rising to >10% of national income, (2) development of leading manufacturing sectors with high growth, and (3) institutional/political framework supporting expansion. All three conditions distinguish take-off from the preconditions stage.

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Agronomy QUESTION #2053

Question 1724

The 'source–sink' relationship in crop physiology as applied to agronomic management refers to:

The relationship between irrigation source and water sink capacity of soil
The balance between photosynthetic capacity (source: leaves producing assimilates) and the capacity of storage organs (sink: grain, tuber) to accumulate dry matter, which determines yield potential✔️
The nutrient flow between organic matter source (manure) and plant nutrient sink (roots)
The relationship between rainfall source and soil water deficit (sink)

Correct Answer Logic:

In crop physiology, source = photosynthetic organs producing assimilates; sink = organs storing assimilates (grain, tubers). Yield is co-limited by both: a large source with small sink (poor grain set) wastes photosynthate; a large sink with small source (poor canopy) starves grain fill. Agronomic practices (planting density, nutrition, irrigation) manage both.

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Aptitude QUESTION #10970

Question 1725

A pattern sequence: ◆◇◆◆◇◆◆◆◇◆◆◆◆◇... The diamonds (◆) between each ◇ increase by one each time. How many total symbols are there up to and including the 5th ◇?

25
30
20✔️
35

Correct Answer Logic:

The pattern between ◇ symbols: 1◆, 2◆, 3◆, 4◆, 5◆ + five ◇ symbols.

Total ◆ symbols = \(1+2+3+4+5 = 15\

Total ◇ symbols = 5

Total symbols up to and including the 5th ◇ = \(15 + 5 = \mathbf{20}\

Wait — let me recount: up to 5th ◇: we have ◆, ◇, ◆◆, ◇, ◆◆◆, ◇, ◆◆◆◆, ◇, ◆◆◆◆◆, ◇ = 1+1+2+1+3+1+4+1+5+1 = 20. Answer = 20 (option C, index 2). Correction noted.

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Journalism / Mass Communication QUESTION #6414

Question 1726

Which of the following BEST describes the historical significance of block printing originating in China (Diamond Sutra, 868 AD) versus Gutenberg's movable type press (1440s)?

Block printing was a faster technique than movable type, so Gutenberg's press was actually a step backward
Block printing was the original method (pressing paper onto individually carved wooden blocks) — used for centuries in China; Gutenberg's innovation was the first widespread use of MOVABLE type (separate, reusable characters), combined with oil-based ink and rag paper, creating a far more efficient system for alphabetic languages✔️
Both techniques are identical — the Diamond Sutra was printed using movable type identical to Gutenberg's
Movable type was invented by Gutenberg without any knowledge of Chinese printing technology

Correct Answer Logic:

The textbook carefully distinguishes two phases of printing history:

Block Printing: The original Chinese method — carving an entire page's content into a single wooden block, then pressing paper onto it. The earliest known printed text using this method is the Diamond Sutra, a Buddhist scripture, printed in China in 868 AD. The disadvantage: a new block must be carved for every different page — extremely time-consuming.
Movable Type: Invented by Bi Sheng in China around 1041 AD using clay type. Gutenberg (1440s Germany) independently refined it using durable metal type, oil-based ink, and rag paper (paper introduced to Europe from China via Muslim trade routes). Gutenberg is credited because he created the first commercially practical and widely adopted system for European alphabetic languages.

Gutenberg's press was not entirely novel — it built on Chinese and Korean innovations — but its adaptation for the Latin alphabet and its commercial viability made it a historical turning point.

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Chemistry QUESTION #5545

Question 1727

In which of the following pairs of molecules/ions are BOTH species unlikely to exist?

$H_2^+,\ He_2^{2-}$
$H_2^-,\ He_2^{2-}$
$H_2^{2+},\ He_2$✔️
$H_2^-,\ He_2^{2+}$

Correct Answer Logic:

Bond order = $\frac{1}{2}(\text{bonding} - \text{antibonding electrons})$. $H_2^{2+}$: 0 electrons, BO = 0 → does not exist. $He_2$: 2 bonding + 2 antibonding, BO = 0 → does not exist. Therefore both $H_2^{2+}$ and $He_2$ cannot exist, making option C correct.

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Planning QUESTION #4998

Question 1728

In Multi-Criteria Decision Analysis (MCDA), what is the purpose of weight assignment?

Eliminate irrelevant criteria
Reflect relative importance of criteria✔️
Reduce calculation complexity
Standardize measurement units

Correct Answer Logic:

Weight assignment in MCDA (e.g., Analytical Hierarchy Process) quantifies the relative importance of different criteria in decision-making. Weights (summing to 1.0) ensure more important factors have greater influence on final rankings or selections.

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English QUESTION #8325

Question 1729

Tick the word SIMILAR in meaning to: Audacity

courage✔️
timidity
politeness
misfortune

Correct Answer Logic:

Audacity means bold courage or nerve.

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Disaster Management QUESTION #6552

Question 1730

In establishing public-private partnerships for DRR, what represents the most sustainable incentive structure?

Government contracts
Tax incentives, regulatory recognition, CSR alignment, and shared risk-reduction benefits that create business value✔️
Public recognition
Mandatory participation

Correct Answer Logic:

Sections 6.4 and 8.4 propose incentives (tax breaks, grants) and CSR integration. Sustainable PPPs require business cases where private sector gains value (reduced business disruption, market opportunities, regulatory benefits) alongside social benefits, creating win-win scenarios.

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Reading and Writing (Module-1) QUESTION #10383

Question 1731

The professor's ------- explanations left students more confused than before, as she buried simple ideas under needless jargon.

lucid
obfuscating✔️
succinct
candid

Correct Answer Logic:

Explanations that confuse via jargon are 'obfuscating.'

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Electrical Engineering QUESTION #2143

Question 1732

In a power system, the 'Ferranti Effect' occurs when the receiving end voltage $V_r$ is higher than the sending end voltage $V_s$. This is typically observed under which condition?

Full load with lagging power factor
No load or light load on long lines✔️
Short circuit at the receiving end
Heavy inductive loading

Correct Answer Logic:

The Ferranti effect is caused by the charging current of the line (capacitance) when it is energized but lightly loaded, leading to $V_r > V_s$.

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Education QUESTION #10857

Question 1733

Education confined to a formal educational institution is called:

Informal education
Non-formal education
Formal education✔️
Semi-formal education

Correct Answer Logic:

Formal education is structured, systematic, and institutionalised — occurring in schools, colleges, and universities within a planned curriculum, defined grades, certified teachers, and recognised qualifications. It is time-bound and follows official syllabi. Informal education occurs through life experiences; non-formal education is organised but outside formal institutions (e.g. adult literacy programmes, community education centres).

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Nursing QUESTION #9307

Question 1734

A patient with acute renal failure (ARF) is in the oliguric phase. The nurse should restrict which of the following dietary elements?

Carbohydrates
Proteins, potassium, sodium, and fluids✔️
Fats
Vitamin C

Correct Answer Logic:

In the Oliguric Phase of Acute Renal Failure, the kidneys cannot excrete waste products or maintain fluid/electrolyte balance. Dietary restrictions:

Restriction	Reason
Protein (0.6–1 g/kg/day)	Prevents accumulation of nitrogenous waste (urea, creatinine)
Potassium	Prevents life-threatening hyperkalemia
Sodium	Prevents fluid retention and hypertension
Fluids	Fluid intake = Previous day urine output + 500 mL (insensible losses)
Phosphorus	Prevents hyperphosphatemia and renal osteodystrophy

Carbohydrates and fats are encouraged to provide calories and spare protein catabolism.

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Geography QUESTION #6302

Question 1735

The concept of the heat budget of the Earth achieving equilibrium implies which set of conditions?

Incoming solar radiation equals outgoing terrestrial radiation globally
Tropical regions have energy surplus while polar regions have deficit
Latitudinal heat transfer by ocean and atmosphere currents
All of the above conditions must be satisfied✔️

Correct Answer Logic:

Earth's heat budget equilibrium requires: (1) global balance between incoming solar and outgoing terrestrial radiation, (2) latitudinal imbalances (surplus in tropics, deficit at poles), and (3) heat transfer mechanisms (atmospheric and oceanic circulation) to redistribute energy.

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General Knowledge QUESTION #8894

Question 1736

Which of the following has the maximum calories per gram?

Carbohydrates
Proteins
Fats✔️
Vitamins

Correct Answer Logic:

Fats provide about 9 calories per gram (more than carbs/proteins).

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General Knowledge QUESTION #4751

Question 1737

WAFA is the official news agency of which entity?

Syria
Jordan
Egypt
Palestine✔️

Correct Answer Logic:

WAFA (Wakalat Anba'a Falastiniyya) is the official Palestinian news agency, established in 1972 and operating under the Palestinian Authority.

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Security Measures to Maintain Law and Order QUESTION #874

Question 1738

"Secondary Hazard" in an airport emergency refers to:

The initial explosion
Fires or structural collapses following an attack✔️
Delayed flights
Loss of revenue

Correct Answer Logic:

ASF ADs must manage the initial threat while preventing secondary hazards like fire from spreading to fuel farms.

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Chemistry QUESTION #7197

Question 1739

The separation of a mixture of two liquids having boiling points $350 \text{ K}$ and $355 \text{ K}$ can be best achieved by which technique?

Simple Distillation
Fractional Distillation✔️
Steam Distillation
Distillation under reduced pressure

Correct Answer Logic:

Fractional Distillation is used when the difference in boiling points between two miscible liquids is small (usually less than $25 \text{ K}$) [cite: 3, 59].

Since the difference here is only $5 \text{ K}$, a fractionating column is required to provide repeated condensation and vaporization cycles[cite: 4].

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MCQs Section QUESTION #5109

Question 1740

اردو کی کون سی تحریک کے بعد اصلاحِ اردو کی تحریک چلی؟

ایہام گوئی✔️
رومانیت
جدیدیت
ان میں سے کوئی نہیں

Correct Answer Logic:

ایہام گوئی کی تحریک کے رد عمل میں اصلاحِ اردو کی تحریک شروع ہوئی۔

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