Reading Mode - Questions

Aptitude QUESTION #10983

Which of the following sequences of architectural periods in India is in the correct chronological order (earliest to latest)?

Mughal → Gupta → Mauryan → Colonial
Mauryan → Gupta → Medieval (Sultanate/Mughal) → Colonial✔️
Colonial → Mughal → Gupta → Mauryan
Medieval → Mauryan → Colonial → Gupta

Correct Answer Logic:

Chronological order of major Indian architectural periods:

Mauryan (322–185 BCE) — Ashoka pillars, Sanchi Stupa foundation
Gupta (4th–6th century CE) — Temple architecture begins (Dashavatara Temple)
Medieval — Sultanate (13th–16th c.), Mughal (16th–18th c.) — Qutb Minar, Taj Mahal, Red Fort
Colonial (18th–20th c.) — Indo-Saracenic, British institutional buildings

This is Mauryan → Gupta → Medieval → Colonial. Option B is correct.

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Psychology QUESTION #9793

Question 3722

What can happen when a person believes a connection exists between an action and its outcome when no real relationship exists?

Classical conditioning
Superstitious behavior✔️
Shaping
Sequential learning

Correct Answer Logic:

Superstitious behaviour (Skinner) occurs when an organism mistakenly perceives a causal link between its behaviour and a reinforcer when the two are unrelated — observed in pigeons developing odd behaviours after accidental food pairings.

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Physics QUESTION #7104

Question 3723

Which of the following is the correct relationship between Young's modulus ($Y$), bulk modulus ($K$), and modulus of rigidity ($\eta$)? [cite: 487, 488]

$Y = \frac{9K\eta}{3K-\eta}$
$Y = \frac{9K\eta}{2\eta+3K}$
$K = \frac{Y\eta}{9\eta-3Y}$✔️
$\eta = \frac{3YK}{9K+Y}$

Correct Answer Logic:

The general relationship is $\frac{9}{Y} = \frac{3}{\eta} + \frac{1}{K}$.

Rearranging for $K$: $\frac{1}{K} = \frac{9}{Y} - \frac{3}{\eta} = \frac{9\eta - 3Y}{Y\eta}$
Thus, $K = \frac{Y\eta}{9\eta - 3Y}$[cite: 492].

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Nursing QUESTION #9210

Question 3724

A Head Nurse reads a study where the researchers interviewed 12 nurses until no new themes emerged. What sampling method was used?

Quota sampling
Purposive sampling until theoretical saturation✔️
Snowball sampling
Stratified random sampling

Correct Answer Logic:

Correct Answer: B — Purposive sampling until theoretical saturation

In qualitative research, the concept of theoretical (or data) saturation refers to the point at which no new information or themes are emerging from additional data collection.

Why 'purposive sampling'? Qualitative researchers deliberately select participants based on specific characteristics relevant to the research question — this is purposive (or purposeful) sampling.

Comparison of qualitative sampling methods:

Method	Description
Purposive	Deliberate selection based on specific criteria
Snowball	Participants recruit other participants (used for hard-to-reach populations)
Theoretical	Sampling continues until saturation — guided by emerging theory (Grounded Theory)

Sample size in qualitative research is determined by saturation, not pre-calculated formulas.

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Bio-Technology QUESTION #10588

Question 3725

The primary purpose of downstream processing (DSP) in bioprocesses is to:

Maximise cell growth and product titre in the fermenter
Isolate, purify, and formulate the bioproduct to the required specification✔️
Sterilise growth media before inoculation
Monitor pH and dissolved oxygen online during fermentation

Correct Answer Logic:

Downstream processing (DSP) encompasses all steps after fermentation to recover and purify the product: cell separation → cell disruption (if intracellular) → primary recovery → purification → polishing → formulation. DSP can account for 60–80% of total production cost for high-value biologics. The key challenge is achieving high purity while maximising yield and minimising processing steps.

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Economics QUESTION #1713

Question 3726

Among the structural inefficiencies plaguing Pakistan's electricity sector, which specific operational failure has been most directly responsible for the sector's financial losses and the accumulation of circular debt?

Excess installed generation capacity relative to actual demand (overcapacity)
High transmission and distribution (T&D) losses combined with electricity theft and under-recovery✔️
Prohibitively high electricity tariffs that suppress industrial and household demand
None of these

Correct Answer Logic:

Pakistan's power sector inefficiency is primarily driven by high transmission and distribution (T&D) losses — officially around 17–20% but effectively higher when electricity theft (kundas) is included — combined with poor bill recovery rates from distribution companies (DISCOs). These losses mean that significant electricity is generated and distributed but not paid for, creating a cash flow shortfall that cascades into the circular debt. Overcapacity (capacity payments) is a contributing but secondary factor.

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Economics QUESTION #1693

Question 3727

Classical economics, with its emphasis on the self-regulating nature of markets and the primacy of production capacity, is most accurately categorised as:

Supply-side economics✔️
Demand-side economics
Both supply-side and demand-side economics
None of these

Correct Answer Logic:

Classical economics emphasises supply-side factors as the primary determinants of long-run economic output — production capacity, factor markets, Say's Law ('supply creates its own demand'), flexible wages and prices, and market self-correction. It contrasts with Keynesian economics, which is demand-side (aggregate demand drives output and employment in the short run). Classical economists believe markets naturally return to full employment without government intervention.

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Math Physics Chemistry Biology QUESTION #11232

Question 3728

Which of the following cellular structures is NOT surrounded by a double membrane?

Nucleus
Mitochondrion
Lysosome✔️
Chloroplast

Correct Answer Logic:

The nucleus, mitochondria, and chloroplasts are all double-membrane bound organelles. Lysosomes are single-membrane bound organelles containing hydrolytic enzymes.

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Security Measures to Maintain Law and Order QUESTION #865

Question 3729

"Accountability" for an Assistant Director means being answerable to:

Only the DG
The Law and the Federal Government✔️
No one
The Airlines

Correct Answer Logic:

Under Section 4, 11, and 13, officers are accountable to the legal framework established by the Federal Government and the Judiciary.

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Reading and Writing (Module-1) QUESTION #5327

Question 3730

Regarding the bioluminescent jellyfish, when does the glow typically occur?

When the jellyfish is disturbed by a predator.✔️
During the daylight hours.
Continuously throughout the night.
Only when the water temperature rises.

Correct Answer Logic:

The text specifies the glow happens when the organism is 'disturbed.'

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English QUESTION #2666

Question 3731

Which word is opposite in meaning to: 'GIANT'?

Huge
Dwarf✔️
Strong
Large

Correct Answer Logic:

'Giant' refers to something very large; 'dwarf' refers to something very small.

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Physics and Math QUESTION #774

Question 3732

If $\dfrac{dy}{dx} = 2x$, then the equation becomes:

$y = x^2 - 2x - 3$
$y = x^2 - 2x + 3$✔️
$y = x^2 + 2x - 3$
None

Correct Answer Logic:

Integrating: $y = \int 2x\, dx = x^2 + C$. With appropriate constant the form $y = x^2 - 2x + 3$ is selected in the paper.

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Mathematics QUESTION #4136

Question 3733

If $\vec{a} \times (\vec{b} \times \vec{c}) = (\vec{a} \times \vec{b}) \times \vec{c}$, what can we conclude about vectors $\vec{a}$ and $\vec{c}$?

$\vec{a}$ is perpendicular to $\vec{c}$
$\vec{a}$ and $\vec{c}$ are parallel✔️
$\vec{b}$ is perpendicular to both $\vec{a}$ and $\vec{c}$
$\vec{a} = \vec{c}$

Correct Answer Logic:

Using vector triple product identity: $\vec{a} \times (\vec{b} \times \vec{c}) = (\vec{a} \cdot \vec{c})\vec{b} - (\vec{a} \cdot \vec{b})\vec{c}$ and $(\vec{a} \times \vec{b}) \times \vec{c} = (\vec{a} \cdot \vec{c})\vec{b} - (\vec{b} \cdot \vec{c})\vec{a}$. Equating gives $(\vec{a} \cdot \vec{b})\vec{c} = (\vec{b} \cdot \vec{c})\vec{a}$, implying $\vec{a}$ and $\vec{c}$ are parallel.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3216

Question 3734

'Ovulation' is triggered by a sudden surge in which hormone?

Estrogen
Progesterone
Luteinizing Hormone (LH)✔️
Follicle Stimulating Hormone (FSH)

Correct Answer Logic:

The LH surge on day 14 of the cycle causes the release of the egg.

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General Knowledge QUESTION #4771

Question 3735

How many official working languages does the United Nations recognize?

8
6✔️
4
10

Correct Answer Logic:

The United Nations recognizes 6 official languages: Arabic, Chinese, English, French, Russian, and Spanish.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3081

Question 3736

The 'Axon' is a structure specifically found in which type of cell?

Osteocyte
Neuron✔️
Erythrocyte
Leukocyte

Correct Answer Logic:

The axon is the long threadlike part of a nerve cell along which impulses are conducted.

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Molecular Biology / Bioinformatics / Biochemistry QUESTION #11103

Question 3737

Which gland secretes the hormone glucagon?

Thyroid gland
Pituitary gland
Liver
Pancreas✔️

Correct Answer Logic:

Glucagon is secreted by the alpha (α) cells of the islets of Langerhans in the pancreas. It is released when blood glucose falls below normal (hypoglycaemia) and acts primarily on the liver to: (1) stimulate glycogenolysis (glycogen → glucose), (2) stimulate gluconeogenesis (amino acids/lactate → glucose), and (3) inhibit glycolysis. Glucagon is the primary counter-regulatory hormone to insulin, maintaining glucose homeostasis.

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Math Physics Chemistry Biology QUESTION #4304

Question 3738

Once an action potential reaches the membrane of a skeletal muscle fiber, what is the first event in the contraction process?

Actin and myosin form a cross-bridge
Calcium is pumped back into the sarcoplasmic reticulum
Calcium is released from the sarcoplasmic reticulum✔️
ATP is hydrolyzed by troponin

Correct Answer Logic:

When an action potential arrives, it triggers the sarcoplasmic reticulum to release $Ca^{2+}$ ions, which bind to troponin, moving tropomyosin and allowing cross-bridge formation.

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Economics QUESTION #1682

Question 3739

Pareto efficiency encompasses three conditions — productive, allocative, and consumptive efficiency. Which of the following concepts is deliberately excluded from the Pareto efficiency framework?

Consumptive efficiency
Productive efficiency
Allocative efficiency
Equity✔️

Correct Answer Logic:

Pareto efficiency (Pareto optimality) is achieved when no one can be made better off without making someone else worse off. It encompasses three conditions: (1) productive efficiency (on the PPF), (2) allocative efficiency (producing the right mix of goods), and (3) consumptive efficiency (optimal distribution of goods among consumers). Crucially, equity (fairness of distribution) is NOT part of Pareto efficiency — a highly unequal distribution can still be Pareto efficient.

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Physics QUESTION #7014

Question 3740

Which of the following correctly describes the relationship between true dip and apparent dip?

True dip is always equal to apparent dip
True dip is not mathematically related to apparent dip
True dip is less than the apparent dip✔️
True dip is always greater than the apparent dip

Correct Answer Logic:

The apparent dip $\delta'$ is the angle of dip observed when the dip circle is not oriented in the magnetic meridian (tilted at angle $\phi$ from the meridian).

The relationship is: $\tan\delta' = \frac{\tan\delta}{\cos\phi}$, where $\delta$ is the true dip.

Since $\cos\phi \leq 1$: $\tan\delta' \geq \tan\delta$, so $\delta' \geq \delta$.

Therefore true dip is always less than or equal to apparent dip. They are equal only when $\phi = 0°$ (dip circle in the meridian).

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