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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3463

Question 4081

The 'R' group in an amino acid determines its:

Color
Weight
Chemical properties and identity✔️
Length

Correct Answer Logic:

Different R-groups make each of the 20 amino acids unique.

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Statistics QUESTION #2013

Question 4082

The relative efficiency (RE) of a Completely Randomized Design (CRD) relative to an RCB design is used to indicate:

Whether the F-test is significant
How many times more observations CRD would need to achieve the same precision as RCB✔️
The ratio of treatment means in both designs
The difference in error degrees of freedom between designs

Correct Answer Logic:

Relative efficiency $RE = \dfrac{MS_E(\text{CRD})}{MS_E(\text{RCB})}$ estimates how many times more replications a CRD would need to attain the same precision as the RCB design. An $RE > 1$ indicates blocking was effective in reducing error variance, justifying the use of the RCB design.

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City and Regional Planning QUESTION #4970

Question 4083

What is the primary limitation of Euclidean Zoning in modern urban planning?

It allows mixed-use development
It separates incompatible uses too rigidly✔️
It provides too much flexibility
It ignores environmental concerns

Correct Answer Logic:

Euclidean Zoning (named after Village of Euclid v. Ambler Realty Co.) rigidly separates land uses into single-use zones, leading to sprawl, increased travel distances, and reduced walkability—contradicting contemporary mixed-use and sustainable development principles.

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Security Measures to Maintain Law and Order QUESTION #921

Question 4084

In security terms, what does 'situational awareness' involve?

Knowing the employee handbook
Being alert to one's environment✔️
Focusing only on assigned tasks
Following the daily schedule

Correct Answer Logic:

It requires constant monitoring of the environment to detect anomalies or potential security threats early.

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Tourism & Hospitality Management QUESTION #1600

Question 4085

According to the Cultural Tourism course, the 'International Cultural Tourism Charter' primarily serves which purpose in the management of heritage tourism?

To set hotel star-rating standards for heritage destinations
To provide a guiding framework of principles for managing the relationship between tourism and cultural heritage sites responsibly✔️
To regulate the pricing of entry tickets to UNESCO World Heritage Sites
To establish immigration rules for cultural tourists

Correct Answer Logic:

The International Cultural Tourism Charter (ICOMOS) is covered in Module 1 of the Cultural Tourism course as a foundational guiding document that establishes principles for responsibly managing the interaction between tourism and cultural heritage — balancing conservation with access and interpretation.

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Physics QUESTION #1046

Question 4086

The output Y of the given logic circuit (NAND-NAND implementation) is similar to output of a ________ gate.

OR
NOR
AND✔️
NAND

Correct Answer Logic:

The circuit shows: A and B fed into a NAND gate, A also fed separately, and outputs combined into another NAND. Using Boolean algebra: NAND of two NANDs of (A,B) and (A,A) simplifies to AND. The output $Y = \overline{\bar{A}+\overline{AB}} = A\cdot B$ (AND gate).

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Mathematics QUESTION #1272

Question 4087

The Maclaurin series for $f(Z)=Z^2e^{3Z}$ starts with:

$Z^2+3Z^3+\dfrac{9}{2}Z^4+\cdots$✔️
$Z^2+3Z^3+3Z^4+\cdots$
$Z^2+Z^3+\dfrac{1}{2}Z^4+\cdots$
$1+Z^2+3Z^3+\cdots$

Correct Answer Logic:

Use $e^{3Z}=\sum_{n=0}^\infty\dfrac{(3Z)^n}{n!}=1+3Z+\dfrac{9Z^2}{2}+\dfrac{9Z^3}{2}+\cdots$. Multiply by $Z^2$: $Z^2e^{3Z}=Z^2+3Z^3+\dfrac{9Z^4}{2}+\cdots$.

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Others section QUESTION #4815

Question 4088

Which power was NOT part of the Axis alliance during World War II?

Germany
Soviet Union✔️
Italy
Japan

Correct Answer Logic:

The Axis powers in World War II comprised Germany, Italy, and Japan. The Soviet Union was part of the Allied powers after Germany invaded it in June 1941 (Operation Barbarossa).

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Chemistry QUESTION #432

Question 4089

In many of its properties __________ is quite different from the other alkali metals.

Li✔️
Be
Na
K

Correct Answer Logic:

Lithium shows anomalous behavior among alkali metals

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English QUESTION #2681

Question 4090

Choose the correct preposition: 'The plane flew ___ the mountains.'

over✔️
on
in
at

Correct Answer Logic:

'Over' is used to indicate movement at a higher level than something else.

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Basic Mathematics QUESTION #2884

Question 4091

What is the duplicate ratio of $3:4$?

9:16✔️
6:8
$\sqrt{3}:2$
27:64

Correct Answer Logic:

The duplicate ratio is the ratio of their squares: $3^2 : 4^2 = 9:16$.

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City and Regional Planning QUESTION #4952

Question 4092

In housing design, what is the recommended minimum room height for habitable spaces?

2.1 meters
2.4 meters
2.7 meters✔️
3.0 meters

Correct Answer Logic:

Building codes typically require minimum 2.7 meters (approximately 9 feet) ceiling height for habitable rooms to ensure adequate ventilation, light distribution, and comfortable living conditions.

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General Science and Ability QUESTION #187

Question 4093

Which source of energy is caused by uneven heating of earth’s surface?

Wind✔️
Solar
Biomass
None of these

Correct Answer Logic:

Wind is generated by atmospheric pressure differences caused by uneven solar heating.

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Urdu QUESTION #5085

Question 4094

'بے نیل مرام' سے کیا مراد ہے؟

بغیر کسی طلب کے
بے وفا
بے ادب
ناکام و نامراد✔️

Correct Answer Logic:

بے نیل مرام کا مطلب ہے ناکام و نامراد یعنی بغیر مقصد حاصل کیے۔

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Urdu QUESTION #5251

Question 4095

کسی دوسرے شاعر کے شعر کو اپنی نظم میں داخل کرنا کیا کہلاتا ہے؟

تخریب
تحنید
تحریر
تضمین✔️

Correct Answer Logic:

تضمین وہ ادبی صنعت ہے جس میں کسی دوسرے شاعر کے شعر یا مصرعے کو اپنی نظم میں شامل کیا جائے۔

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English QUESTION #2646

Question 4096

Which sentence is in the Present Perfect Continuous tense?

He has written a letter.
He had been writing a letter.
He is writing a letter.
He has been writing a letter.✔️

Correct Answer Logic:

The formula for Present Perfect Continuous is Subject + has/have + been + Verb(ing).

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3217

Question 4097

The 'Corpus Luteum' primarily secretes which hormone to maintain the uterine lining?

LH
Estrogen
Progesterone✔️
hCG

Correct Answer Logic:

Progesterone prepares the endometrium for potential implantation.

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Library Sciences QUESTION #1564

Question 4098

In library automation, the MARC 21 format is used primarily for:

Designing library building layouts
Encoding bibliographic, authority, holdings, and community information in a machine-readable structure✔️
Providing digital access to rare manuscripts
Managing library staff payroll

Correct Answer Logic:

MARC 21 (Machine-Readable Cataloguing) is a standard format for encoding bibliographic and related data so that records can be created, stored, exchanged, and processed by computer systems. It is the backbone of shared cataloguing and ILS operations worldwide.

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Basic Mathematics QUESTION #4494

Question 4099

What is the GCD of $24$ and $36$?

$6$
$12$✔️
$8$
$4$

Correct Answer Logic:

Factors of $24$: $1, 2, 3, 4, 6, 8, 12, 24$. Factors of $36$: $1, 2, 3, 4, 6, 9, 12, 18, 36$. Greatest common = $12$

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Physics QUESTION #4390

Question 4100

If a body having mass $m_1 = 2\ kg$ moving with $5\ m/s$ approaches another mass $m_2 = 3\ kg$ with $1\ m/s$ in the same direction, relative speed of approach is $4\ m/s$. Relative speed of separation after collision will be:

$4\ m/s$✔️
$2\ m/s$
$6\ m/s$
Depends on masses

Correct Answer Logic:

By the law of conservation of momentum and the coefficient of restitution for elastic collisions: relative speed of approach $=$ relative speed of separation. Since relative speed of approach $= 5 - 1 = 4\ m/s$, the relative speed of separation $= 4\ m/s$.

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