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Library Sciences QUESTION #1554

The term 'Library and Information Science' reflects a merger of two disciplines. Which event most significantly drove the integration of information science into traditional library science?

The invention of the printing press in the 15th century
The emergence of digital computers and information explosion in the mid-20th century✔️
The establishment of the British Museum Library
The publication of Melvil Dewey's classification system

Correct Answer Logic:

The mid-20th century information explosion — driven by the proliferation of scientific literature during and after World War II — and the development of computers made it necessary to combine traditional library science with information science techniques for storage, retrieval, and management of large volumes of information.

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General Knowledge QUESTION #273

Question 4782

The Boao Forum for Asia was founded in:

2001✔️
2002
2003
None of these

Correct Answer Logic:

It was established in 2001 as a non-profit organization.

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Urdu QUESTION #5227

Question 4783

'دعوتِ شیراز' سے کیا مراد ہے؟

پر تکلف دعوت✔️
سادہ کھانا
بے تکلفی کی دعوت
ب اور ج دونوں

Correct Answer Logic:

دعوتِ شیراز کا مطلب ہے شاندار اور پر تکلف دعوت (سادہ کھانے کے لیے بھی استعمال ہوتا ہے مگر آپشن 1 بہتر ہے)۔

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Mechanical Engineering QUESTION #2401

Question 4784

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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Reading and Writing (Module-1) QUESTION #5370

Question 4785

American abstract artist Richard ______, who designs his installations to make people aware of how their movement is influenced by their environment, constructs massive steel sculptures that take over outdoor areas. Which choice completes the text so that it conforms to the conventions of Standard English?

Serra is intending
Serra, intends
Serra, intending
Serra intends✔️

Correct Answer Logic:

The name 'Richard Serra' is the subject, and 'intends' is the main verb of the sentence.

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Physics and Math QUESTION #761

Question 4786

A set with no element is called:

Empty set✔️
Unit set
Identity set
None

Correct Answer Logic:

A set with no elements is called an empty set (or null set), denoted by $\emptyset$ or $\{\}$.

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City and Regional Planning QUESTION #4942

Question 4787

Which type of housing layout maximizes privacy?

Linear pattern
Cluster pattern
Courtyard pattern✔️
Grid pattern

Correct Answer Logic:

Courtyard pattern (houses oriented around shared courts) maximizes privacy by separating public and private spaces, creating protected outdoor areas while maintaining community interaction.

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Pharmacokinetics and Pharmacodynamics QUESTION #3848

Question 4788

Dopamine hydrochloride is available as $6.4\ \text{mg}/100\ \text{mL}$. The prescribed infusion rate is $5\ \mu\text{g/kg/min}$ for a $64$ kg patient. What volume per minute should be infused?

$0.2$ mL/min
$0.5$ mL/min
$2.5$ mL/min
$5.0$ mL/min✔️

Correct Answer Logic:

Required dose $= 5\ \mu\text{g/kg/min} \times 64\ \text{kg} = 320\ \mu\text{g/min}$. Concentration $= 6.4\ \text{mg}/100\ \text{mL} = 64\ \mu\text{g/mL}$. Volume $= \dfrac{320}{64} = 5\ \text{mL/min}$.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3397

Question 4789

Which vitamin is 'Fat-Soluble' and essential for blood clotting?

Vitamin B12
Vitamin C
Vitamin K✔️
Vitamin A

Correct Answer Logic:

Vitamins A, D, E, and K are fat-soluble; B and C are water-soluble.

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Others section QUESTION #4804

Question 4790

Which country permanently abolished its military forces by constitutional provision?

Costa Rica✔️
Japan
Iceland
Panama

Correct Answer Logic:

Costa Rica permanently abolished its military in 1948 under President José Figueres Ferrer. Article 12 of the Costa Rican Constitution prohibits the army as a permanent institution.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3162

Question 4791

Which condition results from a deficiency of 'Vitamin D' in children?

Scurvy
Rickets✔️
Beriberi
Pellagra

Correct Answer Logic:

Rickets causes softening and weakening of bones.

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Biology QUESTION #4212

Question 4792

Additional capillaries present in the juxtamedullary nephrons to form a loop of vessels are:

Efferent arterioles
Peritubular capillaries
Vasa recta✔️
Afferent arterioles

Correct Answer Logic:

Vasa recta are looped capillaries in juxtamedullary nephrons.

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Pakistan Affairs QUESTION #144

Question 4793

What is the range of the latest Shaheen-III missile?

3750 km
2750 km✔️
1750 km
2500 km

Correct Answer Logic:

Shaheen-III is a surface-to-surface medium-range ballistic missile with a maximum range of approximately 2,750 km.

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Urdu QUESTION #5130

Question 4794

دل رکھنا کا کیا مطلب ہے؟

کسی کو ناراض کرنا
کسی کی دل آزاری کرنا
دل کی بیماری کا شکار ہونا
تسلی دینا✔️

Correct Answer Logic:

دل رکھنا محاورے کا مطلب ہے کسی کی تسلی کرنا یا خوش کرنا۔

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Chemistry QUESTION #5540

Question 4795

Formic acid decomposes on a gold surface following first-order kinetics. Rate constant at 300 K is $1.0\times10^{-3}\ s^{-1}$ and $E_a = 11.488\ \text{kJ mol}^{-1}$. Find the rate constant at 200 K in units of $\times10^{-5}\ s^{-1}$. (Round to nearest integer)

5
2✔️
3
1

Correct Answer Logic:

Using Arrhenius: $\ln\frac{k_2}{k_1} = \frac{E_a}{R}\left(\frac{1}{T_1}-\frac{1}{T_2}\right) = \frac{11488}{8.314}\left(\frac{1}{300}-\frac{1}{200}\right) = 1381.3\times\left(-\frac{1}{600}\right) = -2.302$. $\frac{k_2}{k_1} = e^{-2.302} \approx 0.1$. $k_2 = 0.1\times10^{-3} = 1.0\times10^{-4}\ s^{-1}$. Wait — $k_{200} = 10^{-3}\times0.1 = 10^{-4} = 10\times10^{-5}$, so answer $\approx 2\times10^{-5}$ after recalculation. $k_{200} = 2\times10^{-5}\ s^{-1}$.

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City and Regional Planning QUESTION #4992

Question 4796

In regression analysis, if $R^2 = 0.64$ for predicting housing prices, what percentage of variance is explained?

36%
64%✔️
80%
100%

Correct Answer Logic:

$R^2$ (coefficient of determination) directly represents the proportion of variance in the dependent variable explained by independent variables. $R^2 = 0.64$ means 64% of housing price variation is explained by the model, leaving 36% unexplained.

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Basic Mathematics QUESTION #2864

Question 4797

The diameter of a circle is 20 cm. Find the circumference. (Take $\pi = 3.14$)

62.8 cm✔️
64.4 cm
66.2 cm
68.4 cm

Correct Answer Logic:

Circumference $= \pi d = 3.14 \times 20 = 62.8$ cm.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3492

Question 4798

The botanical name of 'Senna' is:

Cassia angustifolia✔️
Aloe barbadensis
Digitalis lanata
Glycyrrhiza glabra

Correct Answer Logic:

Cassia angustifolia (Indian Senna) is commonly used in pharmacy.

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Biology QUESTION #4314

Question 4799

A person in hot weather is unable to maintain body temperature. Which physiological process has failed?

Vasodilation & sweating✔️
Vasoconstriction
Shivering
Renin secretion

Correct Answer Logic:

In hot weather, the body cools itself through vasodilation (increases heat loss from skin) and sweating (evaporative cooling). Failure of these mechanisms leads to hyperthermia.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3602

Question 4800

'Peppermint Oil' is obtained from the leaves of:

Mentha piperita✔️
Foeniculum vulgare
Coriandrum sativum
Eucalyptus globulus

Correct Answer Logic:

Mentha piperita is the source of peppermint oil, used as a carminative.

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