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Agronomy QUESTION #2052

The concept of 'crop ideotype' in modern agronomy, first proposed by Donald (1968), refers to:

A crop variety selected solely for disease resistance in a specific environment
A hypothetical plant model with a defined combination of morphological and physiological traits designed to maximize yield in a specified environment✔️
A statistical model predicting crop yield based on soil type
A classification system for categorizing crops by their water requirements

Correct Answer Logic:

Donald's ideotype concept proposes designing plant types (ideotypes) with specific trait combinations — e.g., semi-dwarf stature, erect leaves, high HI, responsive to inputs — that theoretically maximize yield in target environments. This concept underpinned Green Revolution breeding and continues to guide modern crop improvement programs.

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Biology QUESTION #553

Question 3262

This disease is characterized by the decline in brain function.

Alzheimer's disease✔️
Parkinson's disease
Epilepsy
None of these

Correct Answer Logic:

Alzheimer's causes cognitive decline

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Physics QUESTION #402

Question 3263

A wire has resistance 100 Ohm at 0?C and 200 Ohm at 100?C. What is its temperature coefficient in K???

?0.01
?1/273
0.01
1/273✔️

Correct Answer Logic:

? = (R??R?)/(R??T) = 100/(100?100) = 0.01 K??, but answer key shows D

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Others section QUESTION #4758

Question 3264

Parachinar is the administrative capital of which tribal agency?

Khyber Agency
North Waziristan
South Waziristan
Kurram Agency✔️

Correct Answer Logic:

Parachinar is the main town and administrative center of the Kurram Agency (now Kurram District) in the former FATA, located near the Afghan border.

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Islamic Studies QUESTION #340

Question 3265

Which Caliph was the first to set the punishment for drinking at eighty lashes?

Hazrat Ali
Hazrat Usman
Hazrat Umar✔️
Hazrat Abu Bakr

Correct Answer Logic:

Hazrat Umar (RA) increased the punishment from 40 to 80 lashes after consultation with the Sahaba.

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English QUESTION #4423

Question 3266

It rained all night; __________ the roads were flooded in the morning.

similarly
instead
as a result✔️
in contrast

Correct Answer Logic:

The sentence shows a cause-and-effect relationship: the rain caused the flooding. 'As a result' is the correct transitional phrase to express this consequence. 'Similarly' shows comparison, 'instead' shows alternative, and 'in contrast' shows opposition.

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Pakistan Affairs QUESTION #321

Question 3267

The boundary demarcation agreement between Pakistan and China was signed in:

1961
1962
1963✔️
1964

Correct Answer Logic:

The Sino-Pakistan Boundary Agreement was signed on March 2, 1963.+1

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Chemistry QUESTION #5527

Question 3268

The Taj Mahal is gradually losing its white colour and being disfigured. This deterioration is primarily attributed to:

Global warming
Acid rain✔️
Water pollution
Soil pollution

Correct Answer Logic:

The Taj Mahal, made of white marble (calcium carbonate, $CaCO_3$), is being corroded by acid rain. Sulphur dioxide ($SO_2$) and nitrogen oxides from nearby industries react with rainwater to form sulphuric and nitric acids. These acids react with $CaCO_3$ forming calcium sulphate ($CaSO_4$), causing yellowing and pitting — known as 'Marble Cancer'.

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Others section QUESTION #4784

Question 3269

Which province in Afghanistan is the largest opium-producing region?

Helmand✔️
Nangarhar
Badakhshan
Kandahar

Correct Answer Logic:

Helmand province in southern Afghanistan is consistently the world's largest single source of illicit opium, accounting for a significant portion of Afghanistan's total opium production.

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English QUESTION #4442

Question 3270

Bachelor's reputation as ____ novelist encouraged hopes that his political thriller would offer more ____ characterizations than are usually found in the genre.

a serious, subtle✔️
a prolific, accurate
a maturing, sweeping
None of these

Correct Answer Logic:

A 'serious' novelist's reputation would lead to expectations of 'subtle' (nuanced) character development in a genre often lacking it.

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Basic Mathematics QUESTION #4583

Question 3271

In an arithmetic sequence $2, 5, 8, 11, 14$, what is the average?

$8$✔️
$7$
$40$
$6$

Correct Answer Logic:

For arithmetic sequence with odd number of terms, average = middle term = $8$

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Electrical Engineering QUESTION #2149

Question 3272

In a DC machine, the purpose of Interpoles is primarily to:

Increase the main field flux
Reduce the speed of the motor
Improve commutation by neutralizing armature reaction✔️
Decrease the starting torque

Correct Answer Logic:

Interpoles are small poles placed to neutralize the cross-magnetizing effect of armature reaction and reduce sparking at the brushes during commutation.

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Urdu QUESTION #5290

Question 3273

بحرِ ظلمات کہتے ہیں؟

بحرِ منجمد شمالی کو
بحرِ منجمد جنوبی کو
بحرالکاہل کو
بحرِ اوقیانوس کو✔️

Correct Answer Logic:

بحرِ ظلمات بحرِ اوقیانوس کا پرانا نام ہے۔

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Security Measures to Maintain Law and Order QUESTION #926

Question 3274

How can security personnel best identify a concealed weapon?

By asking everyone
Using metal detectors and X-rays✔️
Randomly selecting baggage
Guessing based on appearance

Correct Answer Logic:

Technical screening is the most reliable way to detect metallic or non-metallic weapons hidden on a person or in bags.

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Library Sciences QUESTION #1564

Question 3275

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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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3254

Question 3276

'Total Peripheral Resistance' ($TPR$) increases when:

Blood vessels dilate
Blood viscosity increases✔️
Blood pressure drops
Exercise starts

Correct Answer Logic:

Thicker blood (higher viscosity) or constricted vessels increase resistance.

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MCQs Section QUESTION #4893

Question 3277

A common disability in test pilots is hearing impairment, _____.

a consequence of sitting too close to large jet engines for long periods of time✔️
a consequence from sitting for long periods of time too near to large jet engines
a consequence which resulted from sitting too close to large jet engines for long periods of time
damaged from sitting too near to large jet engines for long periods of time

Correct Answer Logic:

It uses the concise and idiomatic appositive 'a consequence of + gerund phrase' to modify 'hearing impairment.' Option B uses the wrong preposition 'from.' Option C is redundant ('consequence which resulted'). Options D and E introduce 'damaged,' which cannot logically modify the noun 'hearing impairment.'

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Pakistan Affairs QUESTION #4663

Question 3278

How many medals did Pakistan win at the 18th Commonwealth Games in Melbourne 2006?

3
5✔️
7
9

Correct Answer Logic:

Pakistan won 5 medals at the 2006 Commonwealth Games held in Melbourne, Australia.

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Therapeutics and Patient Care QUESTION #3885

Question 3279

Which topical clotrimazole treatment regimen is considered the most clinically appropriate for vaginal candidiasis?

$500$ mg as a single dose at bedtime✔️
$100$ mg daily at bedtime for $10$ days
$500$ mg daily at bedtime for $3$ days
$100$ mg daily at bedtime for $14$ days

Correct Answer Logic:

A single intravaginal application of clotrimazole $500$ mg pessary is an evidence-based first-line regimen for uncomplicated vaginal candidiasis.

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Reading and Writing (Module-1) QUESTION #5359

Question 3280

Inés Ibáñez and her team studied sugar maples, some of which were fertilized with nitrogen to simulate soil pollution. They modeled tree growth across current, moderate change, and extreme change climate scenarios. They concluded that nitrogen could help offset the negative effects of climate change, but only if the climate shifts are moderate. Which choice best describes data from the graph that support Ibáñez and colleagues' conclusion?

Growth with nitrogen under the current climate exceeded growth with nitrogen under moderate change, but the latter exceeded growth without nitrogen under extreme change.
Growth without nitrogen under the current climate exceeded growth without nitrogen under moderate change, but the latter exceeded growth with nitrogen under extreme change.
Growth with nitrogen under moderate change exceeded growth without nitrogen under moderate change, but the latter exceeded growth without nitrogen under extreme change.
Growth with nitrogen under moderate change exceeded growth without nitrogen under the current climate, but the latter exceeded growth with nitrogen under extreme change.✔️

Correct Answer Logic:

The conclusion is that nitrogen fertilization in moderate change can 'more than offset' the effect of climate change. Option D supports this by showing nitrogen-aided growth in 'moderate change' is higher than natural growth in the 'current' climate.

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