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Library Sciences QUESTION #1508

Anis Khurshid's 'Jadid Catalogue Sazi' (1993) is significant in Pakistani library science because it:

Introduced the Dewey Decimal System to Pakistan
Provided cataloguing guidelines in the Urdu language✔️
Translated MARC 21 into Sindhi
Established the first digital library in Pakistan

Correct Answer Logic:

Anis Khurshid's 'Jadid Catalogue Sazi' published by Muqtadara Qumi Zaban is a landmark work because it addressed cataloguing theory and practice in the Urdu language, making it accessible to Pakistani library professionals.

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Physics QUESTION #6996

Question 2

In a circuit, the charge on the left plate of a $10\ \mu\text{F}$ capacitor is $-30\ \mu\text{C}$. What is the charge on the right plate of the $6\ \mu\text{F}$ capacitor connected in series with it?

$-12\ \mu\text{C}$
$+12\ \mu\text{C}$
$-18\ \mu\text{C}$
$+18\ \mu\text{C}$✔️

Correct Answer Logic:

In a series combination, all capacitors carry the same magnitude of charge on their plates. The left plate of the $10\ \mu\text{F}$ capacitor has charge $-30\ \mu\text{C}$, so its right plate has $+30\ \mu\text{C}$.

From the circuit analysis using charge conservation and KVL: the right plate of the $6\ \mu\text{F}$ capacitor carries $\mathbf{+18\ \mu\text{C}}$.

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Planning QUESTION #4990

Question 3

In Rank-Size Rule for cities, if the largest city has 5 million population, the fourth-ranked city should theoretically have:

1.25 million✔️
2.5 million
4 million
5 million

Correct Answer Logic:

Rank-Size Rule: $P_r = \frac{P_1}{r}$ where $P_r$ is population of rank $r$ city and $P_1$ is largest city. For rank 4: $P_4 = \frac{5,000,000}{4} = 1,250,000$ or 1.25 million.

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Dairy Food Science and Technology QUESTION #5995

Question 4

Which is used as a cryoprotectant in freeze-drying (lyophilization) of dairy starter cultures?

Sodium chloride
Trehalose or skim milk — they protect cell membranes and proteins during freezing and dehydration by replacing water in hydrogen bonding (water replacement hypothesis)✔️
Calcium chloride
Glycerol at high concentrations

Correct Answer Logic:

Cryoprotectants during freeze-drying of LAB starters include: disaccharides — trehalose and sucrose (most effective) — stabilize membranes via the 'water replacement hypothesis' and vitrification; skim milk (traditional) — lactose $+$ casein protect. Trehalose is preferred for commercial DVS (Direct Vat Set) cultures as it gives highest survival during freeze-drying and storage.

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Dairy Food Science and Technology QUESTION #5887

Question 5

In ice cream production, overrun is defined as:

The percentage of fat above the minimum standard
$\text{Overrun}\;(\%) = \dfrac{V_{\text{ice cream}} - V_{\text{mix}}}{V_{\text{mix}}} \times 100$✔️
The percentage of air incorporated relative to total product weight
The temperature differential during hardening

Correct Answer Logic:

Overrun is the increase in volume due to air incorporation during freezing and whipping. $\text{Overrun}\;(\%) = \dfrac{V_{\text{ice cream}} - V_{\text{mix}}}{V_{\text{mix}}} \times 100$. Commercial ice cream typically has $80\text{–}100\%$ overrun; premium brands have $<50\%$.

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Physics QUESTION #7100

Question 6

If a human grows into a giant such that all linear dimensions increase by a factor of $9$ while density remains the same, by what factor does the stress in the leg change? [cite: 457]

$\frac{1}{81}$
9✔️
$\frac{1}{9}$
81

Correct Answer Logic:

Stress is defined as $\frac{\text{Force}}{\text{Area}}$ [cite: 457].

Force (Weight) $W \propto \text{Volume} \times \text{density} \propto L^3$
Area $A \propto L^2$
$\text{Stress} \propto \frac{L^3}{L^2} \propto L$
Since $L$ increases by $9$, the stress increases by a factor of $9$[cite: 457].

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Information Technology QUESTION #1131

Question 7

Which phase of compiler is responsible for abstract syntax tree (AST) generation?

Syntax analysis✔️
Semantic analysis
Lexical analysis
None of these

Correct Answer Logic:

The Syntax Analysis phase (parsing) takes tokens from lexical analysis and generates a hierarchical structure, typically an AST.

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Pakistan Affairs QUESTION #308

Question 8

What is considered as the greatest monument of Pakistan-China collaboration?

Karakoram Highway✔️
Gawadar Port
Orange Line
None of these

Correct Answer Logic:

The Karakoram Highway (KKH), also known as the Friendship Highway, is the iconic symbol of this partnership.+2

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Physics QUESTION #403

Question 9

The net magnetic field created by the electrons within an atom is due to the field created by their __________ motion.

Orbital
Spin
Orbital & spin
Orbital x spin✔️

Correct Answer Logic:

Both orbital and spin motions contribute to magnetic field

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Paper-I (Pharmaceutics II (Industrial and Quality Control) and Pharmaceutics III (Hospital and Community Pharmacy)) QUESTION #5723

Question 10

A pharmacist is reviewing the Hospital Formulary. Which part of the formulary would contain 'Nutrition products and hospital abbreviations'?

Part-1
Part-2
Part-3✔️
The Preface

Correct Answer Logic:

Part-3 of the Hospital Formulary contains special information like nutrition products and abbreviations.

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General Knowledge QUESTION #45

Question 11

Which of the following best defines Artificial Intelligence?

A. A programming language used for automation
B. The ability of machines to perform tasks that normally require human intelligence✔️
C. A hardware component that improves computer speed
D. A database system for large-scale data storage

Correct Answer Logic:

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Islamic Studies QUESTION #225

Question 12

Which event was called Fateh Mubeen (Clear Victory) in the Holy Qur'an?

Conquest of Makkah
Peace of Hudaybiyah✔️
Battle of Badr
None of these

Correct Answer Logic:

Surah Al-Fath refers to the Treaty of Hudaybiyah as a "clear victory" due to its strategic results.

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Accounting Finance and Punjab Sales Tax on Services QUESTION #2557

Question 13

Under section 16A(1), the threshold aggregate amount of transactions made to the same person in one tax period that mandates payment through banking channel (excluding utility payments) is:

Twenty-five thousand rupees
Thirty thousand rupees
Fifty thousand rupees✔️
One hundred thousand rupees

Correct Answer Logic:

Section 16A(1) as amended by the Punjab Finance Act, 2022 provides that payment of amounts of one or more transactions made to the same person in one tax period where the aggregate exceeds fifty thousand rupees (including sales tax but excluding utility payments) must be made through a crossed banking instrument.

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Chemistry QUESTION #4354

Question 14

Consider the balanced chemical equation: $2H_2 + O_2 \rightarrow 2H_2O$. If $4\ g$ of $H_2$ reacts with $32\ g$ of $O_2$ to produce $28\ g$ of $H_2O$, what is the percentage yield of the reaction? (Molar mass of $H_2 = 2\ g/mol$, $O_2 = 32\ g/mol$, $H_2O = 18\ g/mol$)

63.6%
77.8%✔️
87.5%
92.5%

Correct Answer Logic:

Moles of $H_2 = \frac{4}{2} = 2\ mol$. Theoretical yield of $H_2O = 2 \times 18 = 36\ g$. $\% yield = \frac{28}{36} \times 100 = 77.8\%$.

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Quantitative Reasoning QUESTION #7205

Question 15

This filmmaker avoids making public statements on political issues: her movies are celebrated for their aesthetic qualities rather than for their _____ ones.

polemical✔️
cinematic
narrative
commercial

Correct Answer Logic:

The sentence sets up a contrast: the filmmaker is known for aesthetic (artistic/visual) qualities, not for some other quality described in the blank. Since she does not speak out on political matters, the missing quality must be related to politics or controversy.

Polemical — means controversial, argumentative, or politically charged. This directly fits the contrast: aesthetic vs. polemical qualities.
Cinematic — essentially synonymous with aesthetic in the context of film; not a contrast.
Narrative — refers to storytelling style; not linked to the political theme.
Commercial — relates to box-office value; does not address the political angle.

Correct Answer: A — Polemical. The sentence contrasts aesthetic with polemical (politically contentious) qualities.

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Chemistry QUESTION #471

Question 16

Acetic acid is called __________ acid.

Methanoic
Propanoic
Ethanoic✔️
Butanoic

Correct Answer Logic:

Acetic acid is ethanoic acid

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3337

Question 17

'Incubation' period is the time between:

Infection and the appearance of signs/symptoms✔️
Starting and finishing a meal
Being born and growing up
Taking an antibiotic and feeling better

Correct Answer Logic:

During this time, the microbe is multiplying but hasn't reached levels to cause symptoms.

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Electrical Engineering QUESTION #2176

Question 18

In a superposition problem, a $5\,\Omega$ resistor carries $1\,\text{A}$ when only $V_1$ is active, and $-0.5\,\text{A}$ when only $I_1$ is active. The actual power dissipated in the resistor when both sources act simultaneously is:

$1.25\,\text{W}$✔️
$3.125\,\text{W}$
$6.25\,\text{W}$
$1.875\,\text{W}$

Correct Answer Logic:

Superposition applies to current (not power): $I_{total} = 1 + (-0.5) = 0.5\,\text{A}$. $P = I^2 R = (0.5)^2\times5 = 1.25\,\text{W}$. Directly superimposing powers would give $1^2\times5 + 0.25\times5 = 6.25\,\text{W}$ — a common but incorrect approach.

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Civil Procedure QUESTION #5670

Question 19

A plaintiff seeks to join two defendants in a single action. One defendant's claim arises from a car accident in January, and the other's from a separate contract dispute in June. There are no common questions of law or fact. Is joinder proper under Rule 20(a)(2)?

Yes, because a plaintiff can join as many defendants as they want.
No, because the claims do not arise out of the 'same transaction, occurrence, or series of transactions or occurrences' and there is no common question of law or fact.✔️
Yes, if the total amount in controversy exceeds $75,000.
No, unless both defendants are citizens of the same state.

Correct Answer Logic:

Rule 20(a)(2) requires that the right to relief arise out of the same transaction or occurrence AND there must be a common question of law or fact.

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Electrical Engineering QUESTION #2191

Question 20

Using Gauss's law, an infinite line charge with $\rho_L = 20\,\text{nC/m}$ in free space produces an electric field at $r = 5\,\text{cm}$ of:

$7{,}193\,\text{V/m}$✔️
$3{,}597\,\text{V/m}$
$14{,}386\,\text{V/m}$
$1{,}798\,\text{V/m}$

Correct Answer Logic:

$E = \frac{\rho_L}{2\pi\epsilon_0 r} = \frac{20\times10^{-9}}{2\pi\times8.854\times10^{-12}\times0.05} = \frac{20\times10^{-9}}{2.781\times10^{-12}} \approx 7{,}193\,\text{V/m}$.

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