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Agriculture Economics QUESTION #11878

Question 2641

For inputs that are perfect complements, the isoquants are:

Straight downward-sloping lines
L-shaped (right-angled)✔️
Upward sloping
Circular

Correct Answer Logic:

Perfect complements must be used in fixed proportions, producing L-shaped isoquants.

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Quantitative Reasoning QUESTION #8023

Question 2642

Choose the word that is most nearly opposite in meaning to INVETERATE

casual✔️
public
satisfactory
trustworthy

Correct Answer Logic:

INVETERATE means habitual, established, deep-rooted, or long-standing. The opposite would be occasional, temporary, or not habitual. Casual is correct: an inveterate habit is deeply ingrained and constant, while something casual is occasional and not deeply established.

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The Elections Act 2017 QUESTION #9416

Question 2643

Section 20(3) of the Elections Act 2017 requires that variation in population of constituencies shall not ordinarily exceed ten percent. The 2023 amendment added a proviso clarifying that:

Strict adherence to existing district boundaries is always mandatory
It shall not be necessary to strictly adhere to existing district boundaries in exceptional cases✔️
The ten percent limit may be extended to fifteen percent by Commission order
Population variation must be measured against the latest census in all cases

Correct Answer Logic:

The proviso inserted in Section 20(3) by the 2023 amendment states it 'shall not be necessary to strictly adhere to the existing district boundaries in exceptional cases', providing flexibility in delimitation.

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Biology QUESTION #7243

Question 2644

Two microbes found to be very useful in genetic engineering are:

Diplococcus sp. and Pseudomonas sp.
Crown gall bacterium and Caenorhabditis elegans
Escherichia coli and Agrobacterium tumefaciens✔️
Vibrio cholerae and a tailed bacteriophage

Correct Answer Logic:

E. coli is the workhorse of genetic engineering — used for cloning, protein expression, and plasmid propagation. Agrobacterium tumefaciens is used to introduce foreign genes into plant cells via its Ti plasmid. Together they are the most commonly used microbes in genetic engineering.

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General Knowledge QUESTION #2603

Question 2645

Which of the following scenarios BEST illustrates the 'Digital Divide' in a workplace?

Two employees using different brands of computers
Senior management using advanced data analytics tools while junior clerical staff cannot use basic email or spreadsheets✔️
A computer running Windows instead of Linux
An office with fast internet versus a branch with slow internet

Correct Answer Logic:

The digital divide is the growing skills gap between people with and without digital literacy skills. When senior staff use advanced tools while junior staff cannot even use basic email, this represents a clear digital divide — a gap in digital literacy and access within the same organization.

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HR and Management QUESTION #6474

Question 2646

In the context of 'getting results through others,' HRM helps managers:

Avoid doing any work themselves
Direct employee performance toward organizational objectives✔️
Transfer all responsibility to subordinates
Minimize interaction with employees

Correct Answer Logic:

HRM techniques help managers direct employee performance in desirable directions to achieve organizational objectives. Managers get things done through the efforts of others, which requires effective human resource management - not avoiding work, but enabling and directing others' work.

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General Knowledge QUESTION #8812

Question 2647

Which glands in the human body secrete tears?

Pituitary glands
Adrenal glands
Lachrymal glands✔️
Salivary glands

Correct Answer Logic:

Lachrymal glands produce tears.

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Geology QUESTION #10641

Question 2648

The primary driving mechanism behind the drifting (movement) of tectonic plates and continents is:

Volcanic eruptions at the surface
Mantle convection and tectonic plate interactions✔️
Folding and faulting of surface rocks
Changes in surface landform geometry

Correct Answer Logic:

Plate tectonics — driven primarily by mantle convection currents (heat-driven flow in the viscous mantle), ridge push (elevated mid-ocean ridges push plates apart), and slab pull (dense subducting slabs drag plates toward trenches) — is the mechanism responsible for continental drift. Wegener proposed continental drift in 1912; the mechanism was later explained by seafloor spreading (Hess, 1960) and plate tectonic theory.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3373

Question 2649

'Fomites' are:

Live insects that carry disease
Inanimate objects that can transmit infection (like towels or door knobs)✔️
Types of bacteria
Small viruses

Correct Answer Logic:

Fomite transmission is a common way diseases spread in shared spaces.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3146

Question 2650

Which hormone is detected in a pregnancy test?

Estrogen
Progesterone
Human Chorionic Gonadotropin (hCG)✔️
Luteinizing Hormone (LH)

Correct Answer Logic:

hCG is produced by the developing placenta after implantation.

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Physics QUESTION #6999

Question 2651

A solid sphere of mass $M$ and radius $R$ has a spherical cavity of radius $R/2$ carved out from it. Taking gravitational potential $V = 0$ at $r = \infty$, the potential at the centre of the cavity is:

$-\dfrac{GM}{2R}$
$-\dfrac{GM}{R}$✔️
$-\dfrac{2GM}{3R}$
$-\dfrac{2GM}{R}$

Correct Answer Logic:

Using the superposition principle: Potential at cavity centre = (Potential due to full sphere at that point) $-$ (Potential due to removed small sphere at its own centre).

The cavity centre is at distance $R/2$ from the big sphere centre.

Potential due to full sphere at $r = R/2$ (inside):

$V_{full} = -\frac{GM}{2R^3}\left(3R^2 - \frac{R^2}{4}\right) = -\frac{11GM}{8R}$

Potential due to removed sphere (mass $M/8$, radius $R/2$) at its own centre:

$V_{small} = -\frac{3G(M/8)}{2(R/2)} = -\frac{3GM}{8R}$

$V_{cavity} = V_{full} - V_{small} = -\frac{11GM}{8R} + \frac{3GM}{8R} = -\frac{GM}{R}$

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Boilers Mechanical Engineering QUESTION #3981

Question 2652

The 'Economizer' in a boiler system is used to heat:

The fuel before combustion
Feed water using flue gases✔️
The steam to make it superheated
The air entering the furnace

Correct Answer Logic:

Economizers improve efficiency by recovering waste heat from exhaust gases to pre-heat feed water.

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Mathematics QUESTION #7483

Question 2653

Let $A = \{x \in \mathbb{R} : x$ is not a positive integer$\}$. Define a function $f: A \to \mathbb{R}$ as $f(x) = \frac{2x}{x-1}$, then f is:

not injective
neither injective nor surjective
surjective but not injective
injective but not surjective✔️

Correct Answer Logic:

For injectivity: if $f(x_1) = f(x_2)$, then $\frac{2x_1}{x_1-1} = \frac{2x_2}{x_2-1}$, giving $2x_1(x_2-1) = 2x_2(x_1-1)$, so $x_1x_2 - x_1 = x_2x_1 - x_2$, thus $x_1 = x_2$. So f is injective. For surjectivity to $\mathbb{R}$: given $y \in \mathbb{R}$, solve $\frac{2x}{x-1} = y$, getting $2x = yx - y$, so $x(y-2) = -y$, giving $x = \frac{y}{2-y}$ (provided $y \neq 2$). We need to check if this x is in domain A (not a positive integer). For most y, this x won't be a positive integer, but there are some values of y that map to positive integers, which should be excluded from the range. So f is not surjective to all of $\mathbb{R}$. The answer is D.

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MCQs Section QUESTION #5034

Question 2654

حیاتِ سعدی کی صنف کیا ہے؟

نظم
ناول
افسانہ
سوانح عمری✔️

Correct Answer Logic:

حیاتِ سعدی مولانا الطاف حسین حالی کی تصنیف ہے اور یہ سوانح عمری کی صنف سے تعلق رکھتی ہے۔

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Civil / Architecture QUESTION #2359

Question 2655

In LEED (Leadership in Energy and Environmental Design) v4 rating system, which credit category directly addresses the reduction of volatile organic compound (VOC) emissions from interior finishes to improve Indoor Environmental Quality?

Materials and Resources (MR)
Indoor Environmental Quality (EQ)✔️
Sustainable Sites (SS)
Energy and Atmosphere (EA)

Correct Answer Logic:

Indoor Environmental Quality (EQ) credits in LEED v4 directly address VOC content limits for paints, coatings, adhesives, sealants, flooring, composite wood, and ceiling/wall assemblies. High VOC emissions from interior finishes cause poor indoor air quality and are linked to sick building syndrome. The Materials and Resources category focuses on material sourcing, recycled content, and waste reduction.

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Biology Zoology Botany QUESTION #10818

Question 2656

The inner surface of the ectoderm has a positive affinity for which cells during embryonic development?

Endodermal cells
Mesodermal cells✔️
Archenteron
Stomodium

Correct Answer Logic:

During embryonic development, the inner surface of the ectoderm shows positive affinity for mesodermal cells. This differential cell affinity — described by Holtfreter — drives cell sorting and tissue organisation during gastrulation and early organogenesis. Mesodermal cells migrate and position themselves between the ectoderm and endoderm, guided by adhesion molecules (cadherins) and affinity gradients.

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Ability / HR / Governance / Special Education QUESTION #1861

Question 2657

Appointment by transfer shall be made from amongst persons holding appointment on a regular basis in posts in which pay scales?

One scale lower
One scale higher
The same basic pay scale or equivalent/identical posts✔️
Any scale at discretion of authority

Correct Answer Logic:

Rule 9 states appointments by transfer shall be made from persons holding appointment on a regular basis in posts in the same basic pay scale or equivalent to or identical with the posts to be filled.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3150

Question 2658

Which structure in the ear is responsible for maintaining 'Balance' and equilibrium?

Cochlea
Semicircular canals✔️
Incus
Stapes

Correct Answer Logic:

The cochlea is for hearing; the semicircular canals are for balance.

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Mathematics QUESTION #11154

Question 2659

$\displaystyle\lim_{x\to 1}\frac{x^2 - x}{1 - x + \ln x}$ is:

$2$
$-2$✔️
$1$
$-1$

Correct Answer Logic:

At $x=1$: numerator $= 1-1=0$, denominator $= 1-1+0=0$ (indeterminate $0/0$). Apply L'Hôpital's Rule: $\frac{2x-1}{-1+1/x}$. At $x=1$: $\frac{1}{0}$ — still indeterminate. Apply again: $\frac{2}{-1/x^2}$. At $x=1$: $\frac{2}{-1} = -2$.

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Reading and Writing (Module-1) QUESTION #5438

Question 2660

Many of Shakespeare's tragedies appeal to today's audiences.?Romeo and Juliet?tackles universal themes. But understanding his history plays requires knowledge of English history. Consequently, ____

many theatergoers today find history plays less engaging than tragedies.✔️
some tragedies are more relevant than 20th-century plays.
Romeo and Juliet?is the most thematically accessible tragedy.
experts in English history prefer history plays to other works.

Correct Answer Logic:

The contrast implies history plays are less accessible/engaging for modern audiences.

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