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Logical Reasoning QUESTION #3946

Question 3241

Select the pair with a similar relationship to PERMEATE : RUEFUL

Truculent : Merciful✔️
Sadden : Pitiful
Evaporate : Mournful
Penetrate : Sorrowful

Correct Answer Logic:

3

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Mechanical Engineering QUESTION #2443

Question 3242

The dynamic magnification factor (DMF) \(A_1\) for a damped forced vibration system is:

\(A_1 = \frac{1}{\sqrt{\left[1-\left(\frac{p}{\omega_n}\right)^2\right]^2 + \left[2\zeta\frac{p}{\omega_n}\right]^2}}\)✔️
\(A_1 = \frac{1}{1-(p/\omega_n)^2}\)
\(A_1 = \frac{2\zeta p/\omega_n}{1-(p/\omega_n)^2}\)
\(A_1 = \left(1+\frac{p}{\omega_n}\right)^{-1}\)

Correct Answer Logic:

The DMF for a damped forced vibration: \(A_1=\frac{1}{\sqrt{[1-(p/\omega_n)^2]^2+[2\zeta(p/\omega_n)]^2}}\).

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Education QUESTION #1490

Question 3243

Which sociological theory, founded by Karl Marx, argues that social order is based on dominant groups imposing their will on subordinate groups?

Functional Theory
Interactional Theory
Conflict Theory✔️
Phenomenological Theory

Correct Answer Logic:

Conflict Theory, whose intellectual founder is Karl Marx, argues that social order is based on the ability of dominant groups to impose their will on subordinate groups through force, cooptation, and manipulation.

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Biology QUESTION #4222

Question 3244

The induced fit model differs from the Lock and Key model because the enzyme in this model:

Has a rigid and fixed active site
Changes shape to fit the substrate✔️
Is non-specific in its action
Is denatured during reaction

Correct Answer Logic:

Induced fit model: enzyme changes shape upon substrate binding.

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Agronomy QUESTION #2102

Question 3245

Seed priming is an agronomic technique that improves crop establishment by:

Coating seeds with systemic fungicides to prevent seed-borne diseases during germination
Controlled hydration of seeds to a water potential that allows pre-germinative metabolic activity (DNA repair, enzyme activation, osmoprotectant synthesis) to proceed without radicle emergence, followed by re-drying — resulting in faster, more uniform germination and emergence under field stress conditions✔️
Exposing seeds to gamma radiation to induce beneficial mutations for stress tolerance
Treating seeds with growth regulators to extend their storage life and viability

Correct Answer Logic:

Seed priming (hydropriming, osmopriming with PEG, halopriming with KNO₃/KH₂PO₄, or biopriming with PGPR) allows seeds to advance through Phase I (imbibition) and Phase II (metabolic activity) of germination without entering Phase III (radicle emergence). Benefits: faster mean germination time, improved uniformity, enhanced stress tolerance, and better seedling vigor — particularly valuable for establishment in cold, saline, or drought-prone soils.

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City and Regional Planning QUESTION #4963

Question 3246

What does 'Gentrification' typically result in?

Neighborhood decline
Displacement of lower-income residents✔️
Improved affordable housing
Reduced property values

Correct Answer Logic:

Gentrification often leads to displacement of lower-income residents as neighborhood improvements and influx of higher-income residents increase property values and living costs beyond affordability.

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Agronomy QUESTION #2069

Question 3247

The competition between component crops in intercropping systems is best quantified using the Competitive Ratio (CR), where \(CR_A > 1\) indicates that:

Crop A is producing lower yield than crop B in the intercrop
Crop A is more competitive than crop B — it acquires a greater share of the growth resources (light, water, nutrients) relative to its share in sole cropping, usually at the expense of crop B✔️
The intercropping system has a LER greater than 1
Both crops are equally competitive and the system is in equilibrium

Correct Answer Logic:

Competitive Ratio \(CR_A = \dfrac{LER_A}{LER_B} \times \dfrac{Z_B}{Z_A}\), where \(Z\) is the proportion of each crop in the mixture. \(CR_A > 1\) means Crop A acquires more than its proportional share of resources. Managing CR guides choice of species combinations, row arrangements, and relative densities to reduce dominance of one component and improve overall system productivity.

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Urdu QUESTION #5055

Question 3248

امراؤ جان ادا کس کی تحریر ہے؟

سر سید
ہادی رسوا✔️
رفیق احمد
پریم چند

Correct Answer Logic:

امراؤ جان ادا مرزا ہادی رسوا کا مشہور ناول ہے جو 1899ء میں شائع ہوا۔

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Chemistry QUESTION #1106

Question 3249

Which one of the following compounds can exist as cis-trans isomers?

1,1-Dimethylcyclopropane
1,2-Dimethylcyclohexane✔️
Pent-1-ene
2-Methylhex-2-ene

Correct Answer Logic:

For cis-trans isomerism in cyclic compounds, each carbon of the ring must bear two DIFFERENT substituents. 1,1-Dimethylcyclopropane: one carbon has two identical methyls → no cis-trans. 1,2-Dimethylcyclohexane: each of C1 and C2 has one methyl and one H → different groups on each → cis-trans isomers exist ✓. Pent-1-ene (CH\(_2\)=CHCH\(_2\)CH\(_2\)CH\(_3\)): terminal alkene, one end has two H → no isomerism. 2-Methylhex-2-ene: one end has two methyls → no cis-trans.

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Reading and Writing (Module-1) QUESTION #5342

Question 3250

The library’s collection includes rare manuscripts, first editions, and ______. Which choice completes the text so that it conforms to the conventions of Standard English?

historical maps.✔️
maps that are historical.
mapping history.
to map history.

Correct Answer Logic:

Parallel structure requires a noun phrase like 'historical maps' to match 'rare manuscripts.'

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Biology QUESTION #555

Question 3251

__________ organs are functionally different but structurally alike.

Analogous
Unilogous
Homologous✔️
Hypologous

Correct Answer Logic:

Homologous organs are structurally similar

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English QUESTION #2693

Question 3252

Identify the correct structure: 'Hardly had he left ___ it started raining.'

than
when✔️
then
after

Correct Answer Logic:

The correlative conjunction 'Hardly' is always paired with 'when'.

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Urdu QUESTION #5066

Question 3253

زیر، زبر، پیش لگانے کو اردو میں کیا کہتے ہیں؟

رموزِ اوقاف
وائیں
اعراب✔️
ان میں سے کوئی نہیں

Correct Answer Logic:

اعراب وہ علامات ہیں جو حروف کے نیچے اوپر لگائی جاتی ہیں، جیسے زیر، زبر اور پیش۔

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Physics QUESTION #1183

Question 3254

The charging and discharging behavior of an ideal RLC circuit is:

Simple harmonic✔️
Linear
Elliptical
Unpredictable

Correct Answer Logic:

In an ideal LC (or lightly damped RLC) circuit, the charge on the capacitor and current in the inductor oscillate sinusoidally — this is simple harmonic oscillation. The differential equation for an LC circuit is \(L\frac{d^2q}{dt^2} + \frac{q}{C} = 0\), identical in form to the SHM equation \(\ddot{x} + \omega^2 x = 0\).

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Biology QUESTION #4282

Question 3255

A mature duplicated chromosome consists of:

Two identical double helical DNA molecules✔️
Two different double helical DNA molecules
A double helical DNA molecule distributed in both chromatids
Histone chains wrapped around DNA core

Correct Answer Logic:

After DNA replication, a duplicated chromosome consists of two identical sister chromatids, each containing a complete double-stranded DNA molecule, joined at the centromere.

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Tourism & Hospitality Management QUESTION #1647

Question 3256

The Religious/Sacred Tourism course identifies which classification system for sacred places in Pakistan that covers multiple religious traditions?

A classification based solely on the age and architectural style of religious buildings
A classification covering sacred places of Muslims, Christians, Buddhists, Hindus, Jains, Parsis, Sikhs, and Kalashas — including mosques, tombs, stupas, monasteries, temples, churches, and gurdwaras✔️
A classification based exclusively on UNESCO heritage status
A government-issued ranking of pilgrimage sites by annual visitor numbers

Correct Answer Logic:

Module 4 of the Religious/Sacred Tourism course provides a comprehensive multi-faith classification of religious and sacred places in Pakistan, specifically covering: Muslims, Christians, Buddhists, Hindus, Jains, Parsis, Sikhs, and Kalashas — and their respective heritage types including mosques, tombs, stupas, monasteries, temples, dharmasalas, sacred caves, churches, and gurdwaras.

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English QUESTION #2667

Question 3257

Choose the word opposite in meaning to: 'TRANSPARENT'

Clear
Opaque✔️
Bright
Fragile

Correct Answer Logic:

'Transparent' allows light to pass through; 'opaque' does not.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3597

Question 3258

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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Civil Engineering QUESTION #2132

Question 3259

In transportation engineering, the California Bearing Ratio (CBR) test is used to:

Measure the compressive strength of subgrade soil for designing airport runways only
Evaluate the bearing capacity of subgrade and sub-base materials relative to a standard crushed stone material — the CBR value is used as input to empirical pavement thickness design methods (IRC, AASHTO) to determine required pavement structure depth✔️
Measure the permeability of road base materials for drainage design
Determine the optimum moisture content of subgrade soils for compaction

Correct Answer Logic:

CBR = (load to cause 2.5mm or 5.0mm penetration in test soil / load for same penetration in standard crushed stone) × 100%. It was developed by California Division of Highways and adopted worldwide for flexible pavement design. High CBR (>80%): excellent subgrade; medium (20–50%): fair; low (<5%): poor, requiring thick pavement. It is used in IRC:37, AASHTO, and most national pavement design guides.

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Mathematics QUESTION #1293

Question 3260

If \(\vec{r} = x\hat{i} + y\hat{j} + z\hat{k}\) and \(r = |\vec{r}|\), then \(\nabla r^n\) equals:

\(nr^{n-2}\)
\(nr^{n-1}\vec{r}\)
\(nr^{n-2}\vec{r}\)✔️
\(nr^n\vec{r}\)

Correct Answer Logic:

Using the chain rule: \(\nabla r^n = n r^{n-1}\nabla r\). Since \(\nabla r = \dfrac{\vec{r}}{r}\), we get \(\nabla r^n = n r^{n-1}\cdot\dfrac{\vec{r}}{r} = nr^{n-2}\vec{r}\).

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