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Transgression is the seaward-to-landward advance of the sea over land, typically associated with rising sea level or land subsidence. It produces retrogradational stacking patterns in the stratigraphic record — fining-upward sequences as finer, deeper-water sediments overlie coarser, shallower-water ones. The opposite process — sea retreating from land — is called regression.

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Physics QUESTION #405

Question 1847

In photoelectric effect removal of photons is observed at _________ energies.

Low
High
Intermediate
Both A and C✔️

Correct Answer Logic:

Photoelectric effect occurs at various photon energies above threshold

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Boilers Mechanical Engineering QUESTION #4028

Question 1848

'Pitting' is a form of localized corrosion that looks like:

Small holes or 'pits' in the metal surface✔️
A coat of paint
Long cracks
A layer of dust

Correct Answer Logic:

Usually caused by dissolved oxygen in the boiler water.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3245

Question 1849

Which hormone is the 'Antagonist' to Parathyroid Hormone (PTH) regarding blood calcium?

Insulin
Thyroxine
Calcitonin✔️
Aldosterone

Correct Answer Logic:

PTH raises blood calcium; Calcitonin (from the thyroid) lowers it.

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General Knowledge QUESTION #2586

Question 1850

Which of the following correctly describes 'Abstraction' in everyday computing?

Converting all data into binary format before storage
Simplifying a complex system so users can interact with it easily without needing to understand its inner workings✔️
Encoding characters into numeric values for display on screen
Hiding files in a password-protected folder

Correct Answer Logic:

Abstraction means taking a relatively complex system and simplifying it for our use. When you click a button on a website without knowing the underlying server code, you are using abstraction — the complexity is hidden from you.

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Ability / HR / Governance / Special Education QUESTION #1866

Question 1851

Under Rule 13, who can approve relaxation of the citizenship requirement for appointment?

Prime Minister
Ministry concerned
Establishment Division✔️
FPSC

Correct Answer Logic:

Rule 13 proviso states the citizenship requirement may be relaxed with the approval of the Establishment Division.

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English Literature QUESTION #674

Question 1852

Who is the protagonist of "1984"?

Winston Smith✔️
Big Brother
O'Brien
Emmanuel Goldstein

Correct Answer Logic:

Winston Smith is the everyman who attempts to rebel against the totalitarian regime of Oceania.

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Planning QUESTION #4920

Question 1853

In development economics, what does GDP measure?

Total government debt of a country
Total value of goods and services produced✔️
Total population density
Total development projects

Correct Answer Logic:

GDP (Gross Domestic Product) measures the total monetary value of all goods and services produced within a country's borders during a specific time period, indicating economic performance.

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Chemistry QUESTION #7198

Question 1854

Identify the most stable carbocation among the following species.

$(CH_{3})_{3}C^{+}$✔️
$CH_{3}CH_{2}^{+}$
$CH_{3}^{+}$
$(CH_{3})_{2}CH^{+}$

Correct Answer Logic:

The stability of carbocations follows the order: $3^{\circ} > 2^{\circ} > 1^{\circ} > \text{methyl}$.

$(CH_{3})_{3}C^{+}$ is a tertiary ($3^{\circ}$) carbocation. It is the most stable due to the maximum inductive effect (+I) and hyperconjugation from the nine $\alpha$-hydrogens[cite: 3, 49].

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MBBS QUESTION #10369

Question 1855

A mutation that converts a codon normally specifying an amino acid into a premature stop codon, prematurely truncating the resulting protein, is termed a:

Missense mutation
Nonsense mutation✔️
Silent mutation
Splice site mutation exclusively

Correct Answer Logic:

A nonsense mutation introduces a premature termination (stop) codon, halting translation early and typically producing a truncated, often non-functional protein — as seen in some forms of beta-thalassemia and cystic fibrosis.

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Boilers Mechanical Engineering QUESTION #2414

Question 1856

The hoop (circumferential) stress $\sigma_h$ in a thin-walled cylinder (wall thickness $t$, internal diameter $d$, internal pressure $p$) is:

$\sigma_h = pd/(4t)$
$\sigma_h = pd/(2t)$✔️
$\sigma_h = 2pd/t$
$\sigma_h = pt/d$

Correct Answer Logic:

For a thin-walled cylinder ($t<0.1d$), hoop stress: $\sigma_h=pd/(2t)=pr/t$. The longitudinal stress is half: $\sigma_l=pd/(4t)=\sigma_h/2$.

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Reading and Writing (Module-1) QUESTION #10458

Question 1857

The seminar was so ------- that students, buried under constant -------, struggled to identify the professor's central thesis.

focused . . clarity
digressive . . tangents✔️
concise . . brevity
streamlined . . simplicity

Correct Answer Logic:

A rambling seminar ('digressive') is filled with 'tangents' that obscure the main point.

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Reading and Writing (Module-1) QUESTION #5370

Question 1858

American abstract artist Richard ______, who designs his installations to make people aware of how their movement is influenced by their environment, constructs massive steel sculptures that take over outdoor areas. Which choice completes the text so that it conforms to the conventions of Standard English?

Serra is intending
Serra, intends
Serra, intending
Serra intends✔️

Correct Answer Logic:

The name 'Richard Serra' is the subject, and 'intends' is the main verb of the sentence.

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Boilers Mechanical Engineering QUESTION #2428

Question 1859

The parameter $m$ (fin parameter) for an extended surface (fin) with perimeter $P$, cross-sectional area $A_c$, convection coefficient $h$, and conductivity $k$ is:

$m = \sqrt{hP/(kA_c)}$✔️
$m = hP \cdot kA_c$
$m = \sqrt{kA_c/(hP)}$
$m = h/(kP A_c)$

Correct Answer Logic:

The fin parameter $m=\sqrt{hP/(kA_c)}$ (m⁻¹) governs the exponential temperature decay along the fin.

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Civil Procedure QUESTION #3731

Question 1860

Police have a warrant to search a house for a stolen 60-inch television. During the search, an officer opens a small jewelry box on a nightstand and finds illegal drugs. Is the search of the jewelry box legal?

Yes, because they had a search warrant for the house.
No, because a 60-inch television could not possibly be inside a small jewelry box.✔️
Yes, under the 'Plain View' doctrine.
No, unless they had probable cause to believe drugs were there.

Correct Answer Logic:

A search warrant only allows police to search in areas where the items listed in the warrant could reasonably be found. A large TV cannot be in a small jewelry box, so searching there exceeds the scope of the warrant.

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