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SONAR (Sound Navigation and Ranging) is used to detect objects underwater using sound waves. Its functional opposite would be a system that detects things above water or in the air.

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City and Regional Planning QUESTION #4970

Question 2225

What is the primary limitation of Euclidean Zoning in modern urban planning?

It allows mixed-use development
It separates incompatible uses too rigidly✔️
It provides too much flexibility
It ignores environmental concerns

Correct Answer Logic:

Euclidean Zoning (named after Village of Euclid v. Ambler Realty Co.) rigidly separates land uses into single-use zones, leading to sprawl, increased travel distances, and reduced walkability—contradicting contemporary mixed-use and sustainable development principles.

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Mechanical Engineering QUESTION #2511

Question 2226

According to the Gerber (parabolic) fatigue criterion, the equation relating $\sigma_a$, $\sigma_m$, $S_e$, and $S_{ut}$ is:

$\frac{\sigma_a}{S_e} + \frac{\sigma_m}{S_{ut}} = 1$
$\left(\frac{n\sigma_a}{S_e}\right) + \left(\frac{n\sigma_m}{S_{ut}}\right)^2 = 1$
$\frac{\sigma_a}{S_e} + \left(\frac{\sigma_m}{S_{ut}}\right)^2 = 1$✔️
$\frac{\sigma_a}{S_e} \cdot \frac{\sigma_m}{S_{ut}} = 1$

Correct Answer Logic:

The Gerber parabolic criterion: $\frac{\sigma_a}{S_e}+\left(\frac{\sigma_m}{S_{ut}}\right)^2=1$. Gerber's curve passes through the central region of fatigue failure data.

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English QUESTION #2717

Question 2227

Find the correctly spelled word:

Occurrence✔️
Ocurence
Occurence
Occurance

Correct Answer Logic:

'Occurrence' is spelled with double 'c' and double 'r'.

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Biology QUESTION #4247

Question 2228

The most abundant polysaccharide in plants, widely used in paper and as a source of dietary fibre for human is:

Chitin
Glycogen
Starch
Cellulose✔️

Correct Answer Logic:

Cellulose is most abundant plant polysaccharide.

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Urdu QUESTION #5162

Question 2229

'سبز قدم ہونا' محاورے کا مفہوم کیا ہے؟

مبارک ہونا
چاروں طرف سبزہ ہونا
منحوس ہونا✔️
ان میں سے کوئی نہیں

Correct Answer Logic:

سبز قدم ہونا محاورے کا مطلب ہے منحوس قدم ہونا یعنی جس کے آنے سے نقصان ہو۔

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3348

Question 2230

Which metal is known for its 'Oligodynamic' antimicrobial action?

Iron
Silver✔️
Sodium
Calcium

Correct Answer Logic:

Very small amounts of heavy metals like silver or copper can kill bacteria.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3050

Question 2231

Which type of incompatibility is 'Therapeutic Incompatibility'?

Incorrect drug dosage✔️
Precipitation of a salt
Liquefaction of solids
Color change

Correct Answer Logic:

Therapeutic incompatibility is related to the drug's action and dosage, not its physical appearance.

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General Science and Ability QUESTION #247

Question 2232

What are total combinations of 09 things taken 03 at a time?

18
27
48
84✔️

Correct Answer Logic:

Using the formula nCr=n![citestart]/(r!(n−r)!), 9C3=(9×8×7)/(3×2×1)=84.+1

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3440

Question 2233

'Ketone Bodies' (like Acetone) are produced when there is excessive metabolism of:

Glucose
Fats✔️
Proteins
Vitamins

Correct Answer Logic:

Common in untreated diabetes or very low-carb diets.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3140

Question 2234

'Epinephrine' (Adrenaline) is produced by the:

Adrenal Cortex
Adrenal Medulla✔️
Posterior Pituitary
Testes

Correct Answer Logic:

The medulla produces the 'fight or flight' hormones.

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Others section QUESTION #4794

Question 2235

The McMahon Line serves as the disputed border between which two countries?

India and China✔️
India and Nepal
India and Bangladesh
China and Bhutan

Correct Answer Logic:

The McMahon Line is the disputed boundary between the northeastern part of the Indian subcontinent and Tibet (China), established in 1914. China does not recognize it as a legal border.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3485

Question 2236

'Rauwolfia serpentina' (Asrol) is primarily used for:

Treating cough
Lowering high blood pressure (Hypertension)✔️
Increasing appetite
Treating malaria

Correct Answer Logic:

Reserpine, found in Rauwolfia, is a potent antihypertensive.

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Boilers Mechanical Engineering QUESTION #4038

Question 2237

'Blow-down' water should ideally be:

Dumped into the street
Passed through a heat recovery system if possible✔️
Reused for drinking
Frozen into ice

Correct Answer Logic:

Heat from blow-down can be used to heat feed water.

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Architecture QUESTION #2371

Question 2238

In the design of a retaining gravity wall, the factor of safety against overturning about the toe is computed as the ratio of the resisting moment $M_R$ to the overturning moment $M_O$. The minimum acceptable factor of safety against overturning per standard geotechnical practice is typically:

1.0
1.5✔️
2.0
3.0

Correct Answer Logic:

The minimum factor of safety against overturning for retaining walls is typically $FS_{OT} \geq 1.5$ per most codes and references (including Das, Bowles). The factor of safety against sliding is typically $FS_{sliding} \geq 1.5$, and against bearing capacity failure $FS_{BC} \geq 3.0$. Some codes require $FS_{OT} \geq 2.0$ for critical structures.

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Professional QUESTION #1927

Question 2239

Under Rule 20(4) Cabinet meetings are presided over by the Prime Minister. In the Prime Minister's absence who presides and what is the status of decisions taken?

The most senior Federal Minister; decisions are final
A Minister nominated by the Prime Minister; decisions are subject to the PM's approval unless the Cabinet considers a case so urgent that immediate action may be taken in anticipation of PM's approval✔️
The Cabinet Secretary; decisions are provisional
The Deputy Prime Minister automatically; all decisions are immediately binding

Correct Answer Logic:

Rule 20(4) provides that in the absence of the Prime Minister a Minister nominated by the Prime Minister shall preside and decisions are subject to the PM's approval unless the Cabinet considers a case so urgent that immediate action may be taken in anticipation of PM's approval.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3240

Question 2240

Which molecule acts as the 'Primary Driver' for the diffusion of oxygen from alveoli into the blood?

Partial pressure gradient of $O_2$✔️
Active transport proteins
Water pressure
Blood sugar levels

Correct Answer Logic:

Gases move from areas of high partial pressure to low partial pressure.

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