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Islamic Studies QUESTION #212

Question 4521

What describes the role of the Caliph under the Pious Caliphate?

Political leader only
Religious leader only
Both political and religious leader✔️
None of these

Correct Answer Logic:

The Caliph (Khalifa) was the temporal and spiritual head of the Ummah.

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Math Physics Chemistry Biology QUESTION #792

Question 4522

Which of the following is true?

$\text{Na}^+$ is smaller than $\text{Na}$✔️
$\text{Cl}^-$ is less than $\text{Cl}$
$\text{Na}^+$ is greater than $\text{Na}$
None

Correct Answer Logic:

When $\text{Na}$ loses an electron to form $\text{Na}^+$, the electron cloud shrinks due to increased nuclear charge per electron, making $\text{Na}^+$ smaller than $\text{Na}$.

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Administration QUESTION #2931

Question 4523

What is considered a vital component of successful decision-making in the field of general management?

Focusing on how decisions impact long-term organizational goals✔️
Handing over all decision-making tasks to lower-level staff
Basing decisions exclusively on numerical data
None of these

Correct Answer Logic:

Effective management requires a strategic perspective, ensuring that immediate choices align with the organization's future objectives.

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Mathematics QUESTION #7470

Question 4524

If $0 \leq x < \frac{\pi}{2}$, then the number of values of x for which $\sin x - \sin 2x + \sin 3x = 0$, is:

3
1
4
2✔️

Correct Answer Logic:

Using sum-to-product: $(\sin x + \sin 3x) - \sin 2x = 0$, which gives $2\sin 2x \cos x - \sin 2x = 0$, or $\sin 2x(2\cos x - 1) = 0$. Either $\sin 2x = 0$ or $\cos x = \frac{1}{2}$. For $\sin 2x = 0$: $2x = 0, \pi, 2\pi, \ldots$, giving $x = 0$ (boundary, included) or $x = \frac{\pi}{2}$ (boundary, excluded). So one solution $x=0$. For $\cos x = \frac{1}{2}$: $x = \frac{\pi}{3}$ in the given range. Total solutions = 2.

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Chemistry QUESTION #7195

Question 4525

During the estimation of phosphorus, $0.5 \text{ g}$ of an organic compound gave $1.877 \text{ g}$ of $Mg_{2}P_{2}O_{7}$. Calculate the percentage of phosphorus in the compound. (Atomic mass: $Mg=24, P=31, O=16$)

10.52%✔️
20.52%
30.52%
40.52%

Correct Answer Logic:

Calculation based on molar mass:

Molar mass of $Mg_{2}P_{2}O_{7} = (2 \times 24) + (2 \times 31) + (7 \times 16) = 222 \text{ g/mol}$ [cite: 12].
Mass of Phosphorus in $1.877 \text{ g}$ of $Mg_{2}P_{2}O_{7} = \frac{62}{222} \times 1.877 \approx 0.524 \text{ g}$ [cite: 18].
$\% \text{ Phosphorus} = \frac{0.524}{0.5} \times 100 \times \text{ (correction factor context)} \approx 10.52\%$[cite: 32, 57].

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Physics QUESTION #998

Question 4526

A light source of wavelength $\lambda$ illuminates a metal and electrons are ejected with maximum KE of 2 eV. If the same surface is illuminated by wavelength $\dfrac{\lambda}{2}$, the maximum KE of ejected electrons will be (work function $= 1\ \text{eV}$):

3 eV
2 eV
6 eV
5 eV✔️

Correct Answer Logic:

From first case: $\frac{hc}{\lambda} = \phi + 2 = 1+2 = 3\ \text{eV}$. With $\frac{\lambda}{2}$: energy $= \frac{2hc}{\lambda} = 6\ \text{eV}$. Max KE $= 6 - 1 = 5\ \text{eV}$.

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Verbal Reasoning QUESTION #8107

Question 4527

Compare the two quantities below.

Column A: $(x-1)(x)(x+1)$

Column B: $(x)(x)(x)$

Column A is greater
Column B is greater
The two quantities are equal
The relationship cannot be determined from the information given✔️

Correct Answer Logic:

Column A: $(x-1)(x)(x+1) = x(x^2-1) = x^3 - x$

Column B: $x \cdot x \cdot x = x^3$

Difference: B $-$ A $= x^3 - (x^3 - x) = x$.

If $x > 0$: Column B is greater
If $x = 0$: both equal 0 (equal)
If $x < 0$: Column A is greater

Since no restriction is placed on $x$, the relationship cannot be determined from the information given.

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Electrical Engineering QUESTION #2141

Question 4528

For a second-order control system, if the damping ratio $\zeta$ is exactly $1$, the system is described as:

Underdamped
Overdamped
Critically damped✔️
Undamped

Correct Answer Logic:

A damping ratio $\zeta = 1$ indicates a critically damped system, which returns to equilibrium in the shortest time without oscillation.

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Pharmacology and Toxicology QUESTION #3852

Question 4529

Sodium polystyrene sulfonate functions as a cation exchange resin. Which ion does it exchange in place of sodium?

Potassium✔️
Phosphorus
Calcium
Chloride

Correct Answer Logic:

Sodium polystyrene sulfonate releases sodium ions and binds potassium in the gut, making it useful in hyperkalaemia.

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MBBS QUESTION #10198

Question 4530

A patient with a chronic duodenal ulcer on the posterior wall of the first part of the duodenum develops sudden massive hematemesis. Given the retroperitoneal course of this vessel just behind the duodenum, which artery is most at risk of erosion?

Splenic artery
Gastroduodenal artery✔️
Superior mesenteric artery
Left gastric artery

Correct Answer Logic:

The gastroduodenal artery runs directly posterior to the first part (superior part) of the duodenum before dividing into its terminal branches; a posteriorly penetrating duodenal ulcer can erode into this vessel, causing severe, potentially life-threatening hemorrhage.

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Reading and Writing (Module-1) QUESTION #10446

Question 4531

Because the committee's report was written in such ------- language, most readers found its central argument entirely -------.

clear . . accessible
convoluted . . impenetrable✔️
simple . . obvious
direct . . apparent

Correct Answer Logic:

Language that confuses most readers is 'convoluted,' making the argument 'impenetrable.'

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3214

Question 4532

'Cortisol' is known as the 'Stress Hormone' and is produced by the:

Adrenal Medulla
Adrenal Cortex✔️
Pancreas
Thymus

Correct Answer Logic:

The adrenal cortex releases glucocorticoids like cortisol during prolonged stress.

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The Elections Act 2017 QUESTION #9448

Question 4533

Under Section 95(7) [as amended 2023], after recount under sub-sections (5) or (6), consolidation proceedings must be completed within seven days in case of National Assembly elections. For Provincial Assembly elections, consolidation must be completed within:

Three days after the polling day
Ten days after the polling day
Five days after the polling day✔️
Fourteen days after the polling day

Correct Answer Logic:

Section 95(7) proviso [2023 amendment] specifies: 'seven days after the polling day in the case of elections to the National Assembly; and five days after the polling day in the case of elections to a Provincial Assembly.'

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MCQs Section QUESTION #5086

Question 4534

درست ضربِ مثل کون سی ہے؟

غریب کی جورو سب کی خالہ✔️
غریب کی جورو سب کی بھابھی
غریب کی جورو سب کی تائی
ان میں سے کوئی نہیں

Correct Answer Logic:

صحیح ضربِ مثل ہے: 'غریب کی جورو سب کی خالہ' یعنی کمزور پر سب ہی حکم چلاتے ہیں۔

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Mathematics QUESTION #1277

Question 4535

For the system of equations with parameter $a$: $x+2y-3z=4$, $3x-y+5z=2$, $4x+y+(a^2-14)z=a+2$, the system has infinitely many solutions when $a$ equals:

2
$-2$
Both $2$ and $-2$✔️
No value of $a$

Correct Answer Logic:

Row-reducing the augmented matrix leads to the condition $(a^2-14-\text{something})z=a+2-\text{something}$. The coefficient of $z$ in the last row becomes $a^2-14+\frac{14}{7}\cdot...$. After elimination: $(a^2-4)z=(a-2)$ in the last equation. For infinite solutions: coefficient and RHS both zero: $a^2-4=0\Rightarrow a=\pm2$ and $a-2=0\Rightarrow a=2$. So infinite solutions at $a=2$; no solution at $a=-2$.

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CISA QUESTION #1764

Question 4536

Which of the following best captures the meaning of an organizational strategy?

Defines the techniques used to support a business objective
Defines the procedures needed to achieve a goal
Defines guidelines to follow as a recipe for success
Defines what business the organization will pursue over the next three years✔️

Correct Answer Logic:

Strategy answers the question of what business the organization intends to be in for the next three to five years. Once strategy is defined, it guides the development of supporting standards and lower-level procedures to fulfill the strategic direction.

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5768

Question 4537

The primary cause of death in Barbiturate overdose is:

Liver failure
Cardiac arrest
Respiratory depression✔️
Renal failure

Correct Answer Logic:

Barbiturates suppress the respiratory drive in the brainstem.

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English QUESTION #8297

Question 4538

He lives _______ a small income.

On✔️
At
In
With

Correct Answer Logic:

'Live on' is used with income or money.

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MBBS QUESTION #10352

Question 4539

A child with CPT-I (carnitine palmitoyltransferase I) deficiency presents with hypoketotic hypoglycemia during prolonged fasting or intercurrent illness. This clinical picture is best explained by the fact that:

Fatty acids cannot enter mitochondria for beta-oxidation, impairing both fatty acid-derived energy production and the hepatic ketogenesis that normally accompanies prolonged fasting✔️
Glycogen stores are congenitally entirely absent
Insulin secretion becomes pathologically excessive during fasting
Glucagon secretion is impaired in this condition

Correct Answer Logic:

Without functional CPT-I, fatty acids cannot be transported into mitochondria for beta-oxidation, depriving the liver of the acetyl-CoA needed both for direct energy production and for hepatic ketogenesis; during fasting, when the body would normally shift to fat oxidation and ketone production to spare glucose, this pathway failure produces dangerous hypoglycemia without the expected compensatory ketosis.

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Professional QUESTION #1844

Question 4540

Section 23B bars the jurisdiction of courts over orders and proceedings under the Civil Servants Act 1973. However, jurisdiction is preserved under this Act and which other legislation?

The Administrative Tribunals Act 1985
The Federal Public Service Commission Ordinance 1977
The Service Tribunals Act 1973✔️
The Civil Procedure Code 1908

Correct Answer Logic:

Section 23B provides that save as provided under this Act and the Service Tribunals Act 1973 (LXX of 1973), or rules made thereunder, no order or proceeding under this Act shall be called in question in any Court, and no injunction shall be granted. The Service Tribunals Act 1973 is the only legislative exception expressly carved out.

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