Reading Mode - Questions

Basic Mathematics QUESTION #4504

Question 5561

What is $0 \div 5$?

$0$✔️
$5$
Undefined
$\infty$

Correct Answer Logic:

Zero divided by any non-zero number equals zero. $\frac{0}{5} = 0$

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City and Regional Planning QUESTION #5019

Question 5562

What does 'accessibility index' measure in transportation planning?

Number of roads
Travel time or cost to reach opportunities✔️
Traffic volume
Parking availability

Correct Answer Logic:

Accessibility index quantifies ease of reaching destinations (jobs, services, amenities) from a location, typically calculated as $A_i = \sum_j O_j \cdot f(c_{ij})$ where $O_j$ is opportunities at $j$ and $f(c_{ij})$ is impedance function of cost/time, measuring location advantage.

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Constitutional Law QUESTION #5812

Question 5563

The President enters into an executive agreement with a foreign nation to allow for the mutual exchange of criminal records for counter-terrorism purposes. A federal statute, however, expressly prohibits the disclosure of such records to foreign entities without a court order. Which prevails?

The executive agreement, because the President has plenary power over foreign affairs.
The executive agreement, because it was entered into after the statute was enacted.
The federal statute, because an executive agreement cannot override an existing act of Congress.✔️
The federal statute, because criminal records are a matter of domestic privacy law.

Correct Answer Logic:

Executive agreements (unlike ratified treaties) do not prevail over prior conflicting federal statutes. Under the Youngstown framework, when the President acts in opposition to the expressed will of Congress, his power is at its 'lowest ebb.'

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3579

Question 5564

The term 'Pharmacognosy' was first coined by Seydler in 1815. It is derived from which Greek words?

'Pharmakon' (drug) and 'gnosis' (knowledge)✔️
'Physis' (nature) and 'logos' (study)
'Pharmakon' and 'logos'
'Gnosis' and 'logos'

Correct Answer Logic:

Pharmacognosy literally means 'knowledge of drugs'.

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Chemistry QUESTION #5579

Question 5565

Iodoform ($CHI_3$) can be prepared by the iodoform test from all EXCEPT:

Ethyl methyl ketone ($CH_3COC_2H_5$)
Isopropyl alcohol ($(CH_3)_2CHOH$)
3-Methyl-2-butanone ($CH_3COCH(CH_3)_2$)
Isobutyl alcohol ($(CH_3)_2CHCH_2OH$)✔️

Correct Answer Logic:

The iodoform test is positive for compounds with $CH_3CO–$ or $CH_3CH(OH)–$ groups. Ethyl methyl ketone has $CH_3CO–$ → positive. Isopropyl alcohol has $CH_3CH(OH)–$ → positive. 3-Methyl-2-butanone has $CH_3CO–$ → positive. Isobutyl alcohol ($(CH_3)_2CHCH_2OH$) is a primary alcohol without $CH_3CH(OH)–$ group → does NOT give iodoform test.

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Professional QUESTION #1866

Question 5566

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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General Knowledge QUESTION #2637

Question 5567

The EXTERNAL DATA BUS (EDB) in a computer is best described as:

A type of USB cable used to connect external drives to the computer
A row of wires that interconnect the parts of the computer internally✔️
A software interface that manages communication between the operating system and hardware
The physical slot on the motherboard where expansion cards are inserted

Correct Answer Logic:

The External Data Bus (EDB) is a row of wires that interconnect the parts of our computer. It acts as the pathway through which data travels between the CPU, RAM, and other components. Think of it as the roads or highways through which data travels inside the computer.

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Dairy Food Science and Technology QUESTION #5897

Question 5568

In CIP (Cleaning-In-Place) of dairy equipment, the correct sequence of steps is:

Hot water rinse $\rightarrow$ caustic wash $\rightarrow$ acid wash $\rightarrow$ sanitizer $\rightarrow$ final rinse
Pre-rinse (warm water $35\text{–}40^{\circ}\text{C}$) $\rightarrow$ caustic wash (NaOH $1\text{–}2\%$, $70\text{–}80^{\circ}\text{C}$) $\rightarrow$ intermediate rinse $\rightarrow$ acid wash $\rightarrow$ final rinse $\rightarrow$ sanitizer✔️
Acid wash $\rightarrow$ caustic wash $\rightarrow$ pre-rinse $\rightarrow$ sanitizer
Sanitizer $\rightarrow$ caustic wash $\rightarrow$ acid wash $\rightarrow$ water rinse

Correct Answer Logic:

Standard CIP sequence: (1) Pre-rinse with warm water ($35\text{–}40^{\circ}\text{C}$); (2) Alkaline wash (NaOH $1\text{–}2\%$ at $70\text{–}80^{\circ}\text{C}$) to remove proteins and fats; (3) Intermediate water rinse; (4) Acid wash ($\text{HNO}_3$ or $\text{H}_3\text{PO}_4$ $0.5\text{–}1\%$) to remove milkstone; (5) Final water rinse; (6) Sanitizer before use.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3213

Question 5569

'Growth Hormone' (GH) is secreted by the:

Posterior Pituitary
Anterior Pituitary✔️
Thyroid Gland
Adrenal Medulla

Correct Answer Logic:

The anterior pituitary (adenohypophysis) produces GH, TSH, ACTH, etc.

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Pakistan Affairs QUESTION #4679

Question 5570

Who served as the Special Representative of the United States for Afghanistan and Pakistan Affairs (SRAP)?

Richard Holbrooke✔️
Joan Elizabeth
Gen. MacArthur
George Mitchell

Correct Answer Logic:

Richard Holbrooke served as the first US Special Representative for Afghanistan and Pakistan (SRAP) from January 2009 until his death in December 2010.

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Mechanical Engineering QUESTION #2519

Question 5571

In the coefficient of restitution $e$ for direct central impact of two particles, $e$ is defined as:

The ratio of relative velocity of approach to relative velocity of separation
$e = \frac{v_{B2}-v_{A2}}{v_{A1}-v_{B1}}$ — ratio of relative velocity of separation to approach✔️
$e = \frac{m_A v_{A1}+m_B v_{B1}}{m_A+m_B}$
The ratio of kinetic energies before and after impact

Correct Answer Logic:

The coefficient of restitution: $e=\frac{v_{B2}-v_{A2}}{v_{A1}-v_{B1}}$. For perfectly elastic impact $e=1$; for perfectly plastic $e=0$.

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Security Measures to Maintain Law and Order QUESTION #897

Question 5572

"Landside Security" measures primarily focus on maintaining order in:

The Runway
The Cockpit
Public areas & Car parks✔️
The Cargo hold

Correct Answer Logic:

Landside refers to areas open to the public; maintaining order here is key to preventing attacks before the security checkpoint.

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Mechanical Engineering QUESTION #2509

Question 5573

In singularity function notation for beam loading, the unit step function $\langle x - a\rangle^0$ represents:

A concentrated moment at $x=a$
A uniformly distributed load starting at $x=a$✔️
A concentrated force (unit impulse) at $x=a$
A ramp (linearly increasing) load starting at $x=a$

Correct Answer Logic:

The singularity function $\langle x-a\rangle^0 = 0$ for $x < a$ and $= 1$ for $x \geq a$ is the unit step function, representing the start of a uniformly distributed load at $x = a$.

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Accounting Finance and Punjab Sales Tax on Services QUESTION #2568

Question 5574

Under section 13 of the Act, when there is a change in the rate of tax, at what point in time is the applicable rate determined for taxable services?

At the time the tax invoice is issued
At the time the agreement for service is signed
At the time the service is PROVIDED✔️
At the time payment is received

Correct Answer Logic:

Section 13 clearly states that if there is a change in the rate of tax, the taxable services shall be charged to tax at such rate as is in force AT THE TIME THE SERVICE IS PROVIDED — not when the invoice is issued or payment received.

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