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Civil / Architecture QUESTION #2340

According to Rankine's theory, the passive earth pressure coefficient $K_p$ for a frictionless vertical wall with horizontal cohesionless backfill (friction angle $\phi$) is:

$K_p = \dfrac{1 - \sin\phi}{1 + \sin\phi}$
$K_p = \tan^2\!\left(45° - \dfrac{\phi}{2}\right)$
$K_p = \dfrac{1 + \sin\phi}{1 - \sin\phi}$✔️
$K_p = 1 + \sin\phi$

Correct Answer Logic:

Rankine's passive pressure coefficient: $K_p = \dfrac{1 + \sin\phi}{1 - \sin\phi} = \tan^2\!\left(45° + \dfrac{\phi}{2}\right)$. Note that $K_p = 1/K_a$. Passive pressure develops when the wall moves into the retained soil, mobilizing the maximum shear resistance. Options A and B represent the active coefficient $K_a$.

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General Knowledge QUESTION #8856

Question 3142

Why did Quaid-e-Azam launch Direct Action Day on August 16, 1946?

To protest breach of pledge by Viceroy Lord Wavell✔️
To oppose Congress policies
To get mass support for party membership
To curb the upsurge of national Muslims

Correct Answer Logic:

Direct Action Day protested against the failure of the Cabinet Mission.

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Reading and Writing (Module-1) QUESTION #5393

Question 3143

Research conducted by planetary scientist Katarina Miljkovic suggests that the Moon's surface may not accurately _______ early impact events. When the Moon was still forming, its surface was softer, and asteroid or meteoroid impacts would have left less of an impression; thus, evidence of early impacts may no longer be present. Which choice completes the text with the most logical and precise word or phrase?

reflect✔️
receive
evaluate
mimic

Correct Answer Logic:

'Reflect' means show or make apparent. The context indicates the Moon's surface may not accurately show signs of early impacts due to its softer condition when forming.

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Mathematics QUESTION #1302

Question 3144

For the power series solution of $(x^2+1)y''+xy'-y=0$, we assume $y=\sum_{n=0}^\infty a_n x^n$. This ODE has an ordinary point at $x=0$ because:

The coefficients are all constants
All singular points are at $x=\pm i$, not at $x=0$✔️
The equation is linear
The ODE is homogeneous

Correct Answer Logic:

Ordinary points are where $P(x)=1+x^2\neq0$. The singular points are where $P(x)=0\Rightarrow x^2+1=0\Rightarrow x=\pm i$. Since $x=0$ is not a singular point, it is an ordinary point, and a power series solution $\sum a_n x^n$ converges in a neighbourhood of $x=0$.

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Accounting Finance and Punjab Sales Tax on Services QUESTION #2555

Question 3145

Under section 16(1) of the Punjab Sales Tax on Services Act, 2012, a registered person entitled to claim input tax adjustment must hold a valid tax invoice not older than how many tax periods?

Three tax periods
Six tax periods✔️
Eight tax periods
Twelve tax periods

Correct Answer Logic:

Section 16(1) explicitly states that the registered person must hold a true and valid tax invoice not older than six tax periods showing the amount of tax charged under the Act on the services received.

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General Knowledge QUESTION #4720

Question 3146

Under Vision 2025, WAPDA planned to construct Satpara Dam in which region?

Balochistan
NWFP
Northern Areas✔️
Sindh

Correct Answer Logic:

Satpara Dam was constructed on the Satpara stream near Skardu in the Northern Areas (now Gilgit-Baltistan) of Pakistan.

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Economics QUESTION #1698

Question 3147

The World Bank's classification of countries into four income groups (low income, lower-middle income, upper-middle income, and high income) is based primarily on:

Annual economic growth rate
Labour force participation rate
Unemployment rate
Gross National Income (GNI) per capita✔️

Correct Answer Logic:

The World Bank classifies all countries into four income categories using Gross National Income (GNI) per capita, calculated using the Atlas method (to smooth out exchange rate fluctuations). The thresholds are updated annually. For example, low-income countries have GNI per capita below approximately \$1,135. This classification determines eligibility for World Bank lending facilities (e.g., IDA for low-income countries, IBRD for middle-income countries).

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Boilers Mechanical Engineering QUESTION #2513

Question 3148

The Soderberg criterion for fatigue is more conservative than the modified Goodman criterion because it uses which strength in place of $S_{ut}$?

Endurance limit $S_e$
Proof strength $S_p$
Yield strength $S_y$✔️
Fracture strength $S_f$

Correct Answer Logic:

The Soderberg criterion: $\frac{\sigma_a}{S_e}+\frac{\sigma_m}{S_y}=\frac{1}{n}$. It substitutes yield strength $S_y$ for ultimate strength $S_{ut}$. Since $S_y < S_{ut}$, the Soderberg line falls inside the Goodman line, making it more conservative.

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Civil Procedure QUESTION #3712

Question 3149

Alice offers to sell her car to Bob for $\text{\$5,000}$. She says, 'I will keep this offer open for 10 days.' Three days later, Alice sells the car to Charlie. Bob hears about the sale to Charlie from a mutual friend and immediately calls Alice to accept the offer. Is there a contract between Alice and Bob?

Yes, because Alice promised to keep the offer open for 10 days.
No, because the offer was revoked when Alice sold the car to Charlie and Bob learned of it.✔️
Yes, because Bob accepted before the 10-day period expired.
No, because the car was already gone, making the contract 'physically impossible.'

Correct Answer Logic:

Under common law, an offer can be revoked at any time before acceptance unless there is consideration to keep it open (an option contract). Revocation is effective when the offeree receives reliable information that the offeror has taken action inconsistent with the offer (indirect revocation).

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Law QUESTION #9709

Question 3150

Under Article 2(7), when the Court 'may presume' a fact, it means the Court:

Must regard the fact as proved
May either regard the fact as proved unless disproved, OR may call for proof of it✔️
Shall definitely presume the fact
Cannot call for proof of it

Correct Answer Logic:

Article 2(7) states that whenever the Court may presume a fact, it may either regard such fact as proved, unless and until it is disproved, OR may call for proof of it — giving the Court discretion.

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General Knowledge QUESTION #11554

Question 3151

Which programming language is utilised within MS Office applications to build Macros?

Visual C++
Visual Java
Visual Basic (VBA)✔️
None of the above

Correct Answer Logic:

Microsoft Office uses Visual Basic for Applications (VBA) — a subset of Visual Basic — as its macro programming language. VBA automates repetitive tasks, creates custom functions, and builds user interfaces within Office apps. The VBA editor is accessed via Alt+F11 in Word, Excel, and other Office applications.

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Statistics QUESTION #2010

Question 3152

Laspeyres' price index uses quantities of the __________ period as weights, while Paasche's index uses quantities of the __________ period.

Current; base
Base; current✔️
Base; base
Current; current

Correct Answer Logic:

Laspeyres' index $= \dfrac{\sum p_1 q_0}{\sum p_0 q_0} \times 100$ uses base period quantities $q_0$ as fixed weights. Paasche's index $= \dfrac{\sum p_1 q_1}{\sum p_0 q_1} \times 100$ uses current period quantities $q_1$. Fisher's Ideal index is the geometric mean of both.

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Islamic Studies QUESTION #211

Question 3153

What was the main reason for factionalism during the Caliphate of Ali (رضي الله عنه)?

Disputes over beliefs
Assassination of Usman (رضي الله عنه)✔️
Economic hardship
None of these

Correct Answer Logic:

The demand for 'Qisas' (retribution) for Caliph Usman led to internal conflicts.

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Journalism / Mass Communication QUESTION #6391

Question 3154

The concept of polarization as a behaviour of language in communication refers to which of the following problems?

Languages allow communicators to express all nuances and gradations of meaning perfectly
Language forces communicators to describe things in extreme binary positions (good/bad, yes/no), when the truth usually lies somewhere in between on a spectrum✔️
Polarization refers to the political bias inherent in all mass media
Languages become increasingly simplified over time, losing expressive power

Correct Answer Logic:

Polarization is one of the key ways in which language fails as a communication tool. The textbook explains that languages typically offer binary or extreme descriptors — good or bad, yes or no, right or wrong — when reality is usually a complex continuum. Examples:

A person is called “good” or “bad” — but in reality most people have both qualities
At elections, you vote yes or no to a candidate's entire platform — but you may agree with some policies and disagree with others
You call a film “good” or “bad” — but you might love the music and hate the direction

Polarized language forces communicators to take extreme positions that do not reflect their actual nuanced views. This distorts communication, causes people to make and then over-defend oversimplified judgments, and is a significant barrier to productive dialogue — especially in political and social discourse in mass media.

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Bio-Technology QUESTION #10566

Question 3155

A culture doubles every 2 hours. Starting from $x_0 = 0.1$ g/L, the biomass after 8 hours is:

$0.4$ g/L
$0.8$ g/L
$1.6$ g/L✔️
$3.2$ g/L

Correct Answer Logic:

During exponential growth: $x = x_0 \cdot 2^{n}$ where $n$ is the number of doublings. In 8 hours with a doubling time $t_d = 2$ h: $n = 8/2 = 4$ doublings. Therefore: $x = 0.1 \times 2^4 = 0.1 \times 16 = \mathbf{1.6}$ g/L. Equivalently, using $\mu = \ln2/t_d = 0.347$ h⁻¹: $x = 0.1 \cdot e^{0.347 \times 8} = 1.6$ g/L.

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Dairy Food Science and Technology QUESTION #5922

Question 3156

Which statement about UHT milk is TRUE?

UHT milk must be stored refrigerated immediately after production
UHT milk can be stored at room temperature for $6\text{–}9$ months due to commercial sterility achieved by aseptic processing ($135\text{–}150^{\circ}\text{C}$ for $2\text{–}5$ s) and packaging✔️
UHT milk has a higher nutritional value than HTST-pasteurized milk due to higher temperature use
UHT processing completely destroys all vitamins in milk

Correct Answer Logic:

UHT milk achieves commercial sterility and is packaged aseptically, allowing ambient storage for $6\text{–}9$ months. However UHT treatment causes more heat damage than HTST: lysine loss ($\approx 5\text{–}10\%$), thiamine loss ($\approx 5\text{–}20\%$), and slight cooked flavor from $\text{H}_2\text{S}$ release and Maillard reactions.

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Civil Procedure QUESTION #5685

Question 3157

A party fails to obey a discovery order. The court, under Rule 37(b)(2)(A), may issue an order that:

Directs that the matters embraced in the order or other designated facts be taken as established for purposes of the action.
Prohibits the disobedient party from supporting or opposing designated claims or defenses.
Strikes pleadings in whole or in part.
All of the above.✔️

Correct Answer Logic:

Rule 37(b)(2)(A) provides a broad range of sanctions, including establishing facts, prohibiting claims/defenses, and striking pleadings.

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Accounting & Finance QUESTION #1218

Question 3158

Which of the following statements is generally correct about the reliability of audit evidence?

To be reliable, evidence should be conclusive rather than persuasive
Effective internal control system provides reliable audit evidence✔️
Evidence obtained from outside sources routed through the client
All of these

Correct Answer Logic:

An effective internal control system reduces the risk of material misstatement, making the audit evidence obtained in a well-controlled environment more reliable. Option (A) is incorrect — audit evidence is generally persuasive, not conclusive. Option (C) is incorrect — evidence from outside sources routed through the client is less reliable than direct external confirmation.

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Geology QUESTION #10634

Question 3159

In a Representative Fraction (R.F.) such as 1:50,000, the denominator represents the:

Map distance
Ground distance✔️
Map scale factor
A dimensionless number only

Correct Answer Logic:

In a Representative Fraction (R.F.), the fraction $\dfrac{1}{n}$ means 1 unit on the map corresponds to $n$ units on the ground (Earth's surface). The denominator therefore represents the ground distance in the same units as the numerator (map distance). For example, R.F. = 1:50,000 means 1 cm on the map = 50,000 cm (500 m) on the ground. A larger denominator means a smaller (less detailed) scale.

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Pakistan Affairs QUESTION #313

Question 3160

Sardar Abdur Rabb Nishtar was the first _________ of Pakistan.

Interior Minister
Defense Minister
Communication Minister✔️
None of these

Correct Answer Logic:

He was a key leader of the Pakistan Movement and served as the first Communication Minister.+1

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