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Accounting & Finance QUESTION #6064

From the following data, calculate the value of purchases of raw materials:
Raw material consumed $= \text{Rs. }26{,}500$; Closing stock $= \text{Rs. }4{,}500$; Opening stock $= \text{Rs. }3{,}000$.

Rs. 26,500
Rs. 25,000
Rs. 28,000✔️
Rs. 34,000

Correct Answer Logic:

Using the raw material formula:

$\text{Purchases} = \text{Consumption} + \text{Closing Stock} - \text{Opening Stock}$

$= 26{,}500 + 4{,}500 - 3{,}000 = \mathbf{Rs.\ 28{,}000}$

Opening stock plus purchases minus closing stock equals consumption. Rearranging: Purchases $=$ Consumption $+$ Closing Stock $-$ Opening Stock.

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HR and Management QUESTION #6475

Question 2

The concept of 'avoiding common personnel mistakes' includes all EXCEPT:

Hiring the wrong person for the job
Experiencing high turnover
Maximizing employee potential✔️
Committing unfair labor practices

Correct Answer Logic:

Common personnel mistakes to avoid include: hiring wrong people, high turnover, employees not doing their best, discriminatory actions, unsafe practices, inadequate training, and unfair labor practices. Maximizing employee potential is a goal, not a mistake to avoid.

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Dairy Food Science and Technology QUESTION #5909

Question 3

Detection of starch adulteration in milk involves adding iodine solution. A positive test gives:

A red/pink coloration due to casein-iodine complex
A deep blue-black coloration due to amylose-$\text{I}_2$ complex formation✔️
A yellow precipitate due to starch hydrolysis
No color change; starch is detected by microscopy only

Correct Answer Logic:

Iodine solution (Lugol's iodine or dilute $\text{I}_2/\text{KI}$) reacts with the helical structure of amylose to form an amylose-iodine inclusion complex producing an intense blue-black color. This is a qualitative test for starch adulteration in milk.

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Chemistry QUESTION #7121

Question 4

Among the chemical reactions listed below, which one does NOT represent a calcination process?

$Fe_{2}O_{3}\cdot xH_{2}O \xrightarrow{\Delta} Fe_{2}O_{3} + xH_{2}O$
$2Cu_{2}S + 3O_{2} \rightarrow 2Cu_{2}O + 2SO_{2}$✔️
$ZnCO_{3} \xrightarrow{\Delta} ZnO + CO_{2}$
$CaCO_{3}\cdot MgCO_{3} \xrightarrow{\Delta} CaO + MgO + 2CO_{2}$

Correct Answer Logic:

Calcination involves heating the ore in the absence or limited supply of air, typically to decompose carbonates or hydrated oxides. Equation B describes the heating of a sulphide ore in the presence of excess oxygen to produce an oxide and $SO_2$, which is defined as **Roasting**, not calcination.

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Chemistry QUESTION #7176

Question 5

In a $10 \text{ m}^{3}$ container at $1000 \text{ K}$, a mixture of $0.5$ moles of gas A and $x$ moles of gas B exerts a total pressure of $200 \text{ Pa}$. If $R$ is the gas constant, find the value of $x$.

$\frac{2R}{4+R}$
$\frac{2R}{4-R}$
$\frac{4+R}{2R}$
$\frac{4-R}{2R}$✔️

Correct Answer Logic:

Using the Ideal Gas Equation $PV = nRT$:

Total moles $n = 0.5 + x$
$200 \times 10 = (0.5 + x) \times R \times 1000$
$2000 = (0.5 + x)1000R$
$2 = (0.5 + x)R$
$2/R = 0.5 + x$
$x = \frac{2}{R} - \frac{1}{2} = \frac{4-R}{2R}$

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3189

Question 6

In muscle contraction, $Ca^{2+}$ ions bind to which protein to expose the binding sites on actin?

Myosin
Troponin✔️
Tropomyosin
Actin

Correct Answer Logic:

Calcium binding to troponin causes tropomyosin to move, allowing myosin to attach to actin.

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Security Measures to Maintain Law and Order QUESTION #7683

Question 7

Under what legal authority can ASF personnel arrest individuals?

Civil Aviation Regulations
Police Act 1861 & Criminal Procedure Code 1898✔️
Pakistan Penal Code (PPC)
None of these

Correct Answer Logic:

ASF personnel derive their powers from the Airport Security Force Act 1975, which gives them powers similar to police under the Police Act 1861 and Criminal Procedure Code 1898. This enables them to arrest individuals, investigate offenses, and maintain security at aviation facilities.

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Chemistry QUESTION #4357

Question 8

Which set of quantum numbers is NOT allowed for an electron?

$n=2,\ l=1,\ m=0,\ s=+\frac{1}{2}$
$n=3,\ l=0,\ m=0,\ s=-\frac{1}{2}$
$n=2,\ l=2,\ m=1,\ s=+\frac{1}{2}$✔️
$n=1,\ l=0,\ m=0,\ s=+\frac{1}{2}$

Correct Answer Logic:

For $n=2$, the allowed values of $l$ are $0$ and $1$ only (since $l$ ranges from $0$ to $n-1$). Having $l=2$ when $n=2$ is not allowed, making this set invalid.

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Urdu QUESTION #1407

Question 9

اردو کی وہ کون سی کتاب ہے جس میں عربی فارسی کا ایک بھی لفظ شامل نہ ہو؟

مہر نیم روز
فسانۂ عجائب
پدماوت
رانی کیتکی کی کہانی✔️

Correct Answer Logic:

''رانی کیتکی کی کہانی'' منشی انشاء اللہ خاں انشا کی وہ مشہور تحریر ہے جس میں انہوں نے جان بوجھ کر صرف خالص ہندی (کھڑی بولی) کے الفاظ استعمال کیے اور عربی فارسی کا کوئی لفظ نہیں آنے دیا۔ یہ اردو نثر کا ایک منفرد تجربہ ہے۔

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Ability / HR / Governance / Special Education QUESTION #1866

Question 10

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 Ability and Fire Fighting QUESTION #5609

Question 11

A fire blanket is an example of which extinguishment method?

Cooling
Smothering✔️
Starving
Inhibiting

Correct Answer Logic:

A fire blanket works by smothering the fire — cutting off its oxygen supply by placing a physical barrier between the fuel and the air.

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Boilers Mechanical Engineering QUESTION #2523

Question 12

The instantaneous center (IC) of zero velocity for a rigid body in planar motion is the point at which:

Velocity is maximum
Acceleration is zero
The body has zero instantaneous velocity — every other point's velocity is perpendicular to the line joining it to the IC✔️
Angular velocity is zero

Correct Answer Logic:

The instantaneous center of zero velocity is a point where the velocity is zero at that instant. Every point on the body moves perpendicular to its line connecting to the IC, with speed proportional to its distance: $v_P=\omega\cdot r_{P/IC}$.

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Information Technology QUESTION #1129

Question 13

Which technique works by selecting the local optimal choice at each step?

Dynamic Programming
Divide and Conquer
Greedy Algorithm✔️
None of these

Correct Answer Logic:

A Greedy Algorithm makes the choice that looks best at the current moment with the hope that these local optimal choices will lead to a global optimum.

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Boilers Mechanical Engineering QUESTION #2466

Question 14

The addendum of a standard full-depth involute gear tooth in SI units (module $m$) equals:

$a = 1.25m$
$a = m$✔️
$a = 0.8m$
$a = 1.157m$

Correct Answer Logic:

For standard full-depth involute teeth (SI, 20° pressure angle): addendum $a=m$ (one module), minimum dedendum $b=1.25m$.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3362

Question 15

'Exotoxins' are usually released by:

Dead bacteria only
Living, growing bacteria✔️
Viruses
The host's own cells

Correct Answer Logic:

Exotoxins are secreted proteins that can cause damage even at low concentrations.

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Security Measures to Maintain Law and Order QUESTION #870

Question 16

The "Emergency Operations Center" (EOC) is activated during a crisis to:

Sell tickets
Centralize command and communication✔️
Evacuate the city
Interview witnesses

Correct Answer Logic:

The EOC is the nerve center where ASF, Civil Aviation, and other agencies coordinate their response to an ongoing crisis.

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Physics QUESTION #1033

Question 17

A model states flux through electron orbit in magnetic field $B$ is $n(h/e)$. The magnetic moment in the lowest energy state ($n=1$) is:

$\dfrac{heB}{\pi m}$
$\dfrac{heB}{2\pi m}$✔️
$\dfrac{he}{\pi m}$
$\dfrac{he}{2\pi m}$

Correct Answer Logic:

Flux: $B\pi r^2 = \frac{nh}{e}\Rightarrow r^2 = \frac{nh}{\pi eB}$. For $n=1$: $r=\sqrt{\frac{h}{\pi eB}}$. $mv^2/r = evB\Rightarrow v = \frac{eBr}{m}$. Magnetic moment $\mu = iA = \frac{ev}{2\pi r}\cdot\pi r^2 = \frac{evr}{2} = \frac{e}{2}\cdot\frac{eBr^2}{m} = \frac{e^2Bh}{2\pi em} = \frac{heB}{2\pi m}$.

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Civil Procedure QUESTION #3750

Question 18

A city passes an ordinance that prohibits the use of 'amplified sound' in residential neighborhoods between $\text{10 PM}$ and $\text{7 AM}$. This is an example of:

A content-based restriction.
A valid Time, Place, and Manner restriction.✔️
Prior restraint.
An unconstitutional infringement on free speech.

Correct Answer Logic:

Time, Place, and Manner (TPM) restrictions are constitutional if they are content-neutral, narrowly tailored to serve a significant government interest, and leave open alternative channels of communication.

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Egnlish QUESTION #703

Question 19

George Bernard Shaw was awarded the Nobel Prize in Literature in:

1912
1925✔️
1930
1942

Correct Answer Logic:

Shaw was awarded the 1925 Nobel Prize for his work which is marked by both idealism and humanity.

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Administration QUESTION #9545

Question 20

The Systems School borrowed the concept of 'system' from biological sciences. A government ministry receives a report that its policy outputs are producing unintended social consequences. According to Systems Theory, what mechanism allows the organization to detect and correct this?

Synergy — the combined output of the ministry exceeds what individual departments produce alone
Feedback — information about outputs is returned to the organization to adjust inputs and processes✔️
Subsystem interdependence — related departments automatically realign when external conditions change
Open system boundary — the ministry absorbs environmental change without requiring structural adjustment

Correct Answer Logic:

Feedback is the core corrective mechanism in Systems Theory — information about actual outputs (outcomes) is returned to the system to allow adjustment of inputs and transformation processes. Without feedback loops, organizations cannot detect or respond to unintended consequences.

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