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General Ability and Fire Fighting QUESTION #5591

Which method of fire extinguishment involves removing heat from the fire?

Smothering
Starving
Cooling✔️
Inhibiting

Correct Answer Logic:

Cooling removes heat — typically using water — to bring the fuel temperature below its ignition point. This is the most common firefighting method.

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General Ability and Fire Fighting QUESTION #5590

Question 4222

What is the fourth element added in the Fire Tetrahedron that is not present in the Fire Triangle?

Water
Carbon Dioxide
Chemical Chain Reaction✔️
Pressure

Correct Answer Logic:

Modern fire science adds the Chemical Chain Reaction as a fourth element to form the Fire Tetrahedron. This self-sustaining molecular breakdown keeps the fire going even if basic elements are marginally present.

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Professional QUESTION #1918

Question 4223

Under Rule 9(7) the Secretaries' Committee must meet at least how frequently?

Once a week
Once a fortnight
Once a month unless there are no items for discussion✔️
Once a quarter

Correct Answer Logic:

Rule 9(7) states that the Secretaries' Committee shall meet at least once a month unless there are no items for discussion.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3436

Question 4224

'Competitive Inhibitors' resemble the:

Enzyme
Substrate✔️
Product
Water molecule

Correct Answer Logic:

They compete with the substrate for binding to the active site.

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Psychology QUESTION #1461

Question 4225

Which of the following is an example of intrinsic motivation?

Working hard for a promotion at work
Playing a sport for fun✔️
Studying to avoid punishment
Attending school for a scholarship

Correct Answer Logic:

Intrinsic motivation refers to engaging in an activity for its inherent satisfaction and personal enjoyment — the reward is internal. Playing a sport purely for fun is driven by the enjoyment of the activity itself. Extrinsic motivation involves external rewards or punishments: promotions, avoiding punishment, and scholarships are all external incentives. Deci and Ryan's Self-Determination Theory extensively studied intrinsic vs. extrinsic motivation.

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Commerce QUESTION #1206

Question 4226

Over-applied overhead means:

Actual overheads are less than applied overheads.✔️
Actual overheads are greater than applied overheads.
Fixed costs were not allocated properly.
Direct labor costs were overstated.

Correct Answer Logic:

Overhead is applied to production using a predetermined rate. Over-applied overhead occurs when the applied overhead (predetermined rate × actual activity) exceeds the actual overhead incurred. In other words, actual overheads < applied overheads. This means production was charged more overhead than was actually spent.

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Architecture QUESTION #2365

Question 4227

In the design of steel plate girders, the proportioning of the web panel to prevent shear buckling without tension field action requires the shear buckling coefficient $k_v$. For an unstiffened web with $a/h \to \infty$ (no transverse stiffeners), the value of $k_v$ used in calculating the critical shear stress is:

4.0
5.34✔️
6.34
2.0

Correct Answer Logic:

For a web plate with no transverse stiffeners (pure shear panel, $a/h \to \infty$), the shear buckling coefficient is $k_v = 5.34$. When transverse stiffeners are present with aspect ratio $a/h \leq 1$: $k_v = 4.0 + \dfrac{5.34}{(a/h)^2}$. The critical shear stress is $F_{cr} = \dfrac{k_v \pi^2 E}{12(1-\nu^2)(h/t_w)^2}$. AISC uses $k_v = 5.34$ as the baseline for unstiffened webs.

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Basic Mathematics QUESTION #2869

Question 4228

What is the value of $5^3 - 5^2$?

5
25
100✔️
125

Correct Answer Logic:

Calculation: $5^3 = 125$ and $5^2 = 25$. $125 - 25 = 100$.

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Ability / HR / Governance / Special Education QUESTION #5656

Question 4229

A CFAO discovers that departmental accounts have not been reconciled with CGA/AGPR figures for three consecutive months. Under his duties what is the MOST SERIOUS institutional risk this creates?

Risk of salary delays for government servants
Risk of undetected unauthorized expenditure going unreported to Parliament and the PAC because the liability register and actual figures will diverge — rendering financial control and audit ineffective✔️
Risk of loss of budget allocation for the next year
Risk that the Financial Adviser will be held personally liable

Correct Answer Logic:

The CFAO must systematize maintenance of accounts and their timely reconciliation with CGA/AGPR figures and maintenance of the Liability Register. Failure to reconcile means that unauthorized expenditure excess spending and liabilities cannot be detected compared against the actual figures — this fundamentally undermines the entire financial control architecture including audit PAC accountability and the PAO's personal answerability. This is analytically the most serious institutional risk.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3441

Question 4230

'RBCs' (Red Blood Cells) rely exclusively on which pathway for energy?

Beta-oxidation
Glycolysis✔️
Krebs Cycle
Electron Transport Chain

Correct Answer Logic:

RBCs lack mitochondria and must use anaerobic glycolysis.

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Mathematics QUESTION #1301

Question 4231

The characteristic equation of $3y''-6y'+6y=0$ has roots:

$r=1\pm i$✔️
$r=1\pm 2i$
$r=-1\pm i$
$r=2\pm i$

Correct Answer Logic:

Dividing by 3: $y''-2y'+2y=0$. Characteristic equation: $r^2-2r+2=0\Rightarrow r=\dfrac{2\pm\sqrt{4-8}}{2}=\dfrac{2\pm 2i}{2}=1\pm i$. Complementary solution: $y_c=e^x(C_1\cos x+C_2\sin x)$.

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Agronomy QUESTION #2083

Question 4232

The minimum seed germination percentage required for certified wheat seed under Pakistan's Federal Seed Certification and Registration Department (FSCRD) standards is:

70%
75%
85%✔️
90%

Correct Answer Logic:

Under FSCRD standards in Pakistan, certified wheat seed must have minimum germination of 85%, physical purity of 98%, and moisture content not exceeding 12%. Seeds failing these standards cannot be labeled or sold as certified seed. These standards ensure adequate field establishment at recommended seeding rates.

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Chemistry QUESTION #5578

Question 4233

Aspirin is the common name for which chemical compound?

Acetyl salicylic acid✔️
Phenyl salicylate
Acetyl salicylate
Methyl salicylic acid

Correct Answer Logic:

Aspirin is the brand name for acetylsalicylic acid (2-acetoxybenzoic acid). It is synthesized by acetylation of the –OH group of salicylic acid using acetic anhydride: $C_6H_4(OH)COOH + (CH_3CO)_2O \to C_6H_4(OCOCH_3)COOH + CH_3COOH$. It is an analgesic, antipyretic, and anti-inflammatory drug.

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Boilers Mechanical Engineering QUESTION #4016

Question 4234

'Refractory' material in a boiler furnace is used to:

Generate electricity
Withstand and reflect high temperatures while protecting the metal shell✔️
Act as a lubricant
Increase the weight of the boiler

Correct Answer Logic:

Firebricks and castables are used to line the furnace area.

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English QUESTION #2693

Question 4235

Identify the correct structure: 'Hardly had he left ___ it started raining.'

than
when✔️
then
after

Correct Answer Logic:

The correlative conjunction 'Hardly' is always paired with 'when'.

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Mathematics QUESTION #6035

Question 4236

Suppose $z$ is a complex number of unit modulus with argument $\theta$. Find $\arg\!\left(\dfrac{1+z}{1+\bar{z}}\right)$.

$-\theta$
$\dfrac{\pi}{2}-\theta$
$\theta$✔️
$\pi-\theta$

Correct Answer Logic:

Let $z=e^{i\theta}=\cos\theta+i\sin\theta$. Then $\bar{z}=e^{-i\theta}$.

$\frac{1+z}{1+\bar{z}}=\frac{1+e^{i\theta}}{1+e^{-i\theta}}=\frac{e^{i\theta/2}(e^{-i\theta/2}+e^{i\theta/2})}{e^{-i\theta/2}(e^{i\theta/2}+e^{-i\theta/2})}=\frac{e^{i\theta/2}}{e^{-i\theta/2}}=e^{i\theta}$

So $\arg\!\left(\frac{1+z}{1+\bar{z}}\right)=\theta$

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Professional QUESTION #1835

Question 4237

Under Section 11(3), the service of a civil servant in temporary employment or appointed ad hoc shall be liable to termination on notice of how many days, or pay in lieu thereof?

Seven days
Ten days
Fourteen days✔️
Thirty days

Correct Answer Logic:

Section 11(3) provides that notwithstanding the provisions of sub-section (1), the service of a civil servant in temporary employment or appointed ad hoc shall be liable to termination on fourteen days' notice or pay in lieu thereof. This is the prescribed notice period and is not subject to deviation.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3442

Question 4238

'Vitamin B3' (Niacin) deficiency results in the '3 Ds': Dermatitis, Diarrhea, and Dementia. This disease is:

Beri-beri
Pellagra✔️
Scurvy
Rickets

Correct Answer Logic:

Pellagra is often associated with corn-based diets.

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Public Administration QUESTION #2930

Question 4239

What is the primary role of the "Public Service Commission" in Pakistan?

Funding projects
Ensuring merit-based recruitment✔️
Policing the districts
Drafting foreign policy

Correct Answer Logic:

Commissions like the FPSC are constitutional bodies tasked with conducting competitive exams to recruit civil servants based on merit.

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Dairy Food Science and Technology QUESTION #5990

Question 4240

Fortification of milk with Vitamins A and D is most important for which type of milk?

Whole milk
Skim and low-fat milk, because fat-soluble vitamins A and D are removed with the fat during separation✔️
Flavored milk
UHT milk

Correct Answer Logic:

Fat-soluble vitamins A and D are naturally associated with the fat phase of milk. When fat is removed during skimming, these vitamins are also substantially removed. US FDA requires reduced-fat milks to be fortified with Vitamin A at $\geq 2000\;\text{IU/quart}$ and Vitamin D at $\geq 400\;\text{IU/quart}$.

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