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ETAG General Aptitude QUESTION #3763

In a classroom survey, 10 pupils prefer Mathematics, 12 prefer English, 4 like both subjects, and 6 like neither. What is the total number of pupils in the class?

18
20
24✔️
32

Correct Answer Logic:

Total = (Math + English - Both) + Neither = (10 + 12 - 4) + 6 = 18 + 6 = 24.

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Chemistry QUESTION #4371

Question 482

What happens when $H^+$ is added to ammonium hydroxide and ammonium chloride buffer?

More ammonium hydroxide is formed
Reaction will move reverse
Reaction will move forward✔️
No effect on equilibrium

Correct Answer Logic:

In $NH_4OH/NH_4Cl$ buffer, adding $H^+$ shifts the equilibrium: $NH_4OH + H^+ \rightarrow NH_4^+ + H_2O$. The reaction moves forward (Le Chatelier's principle), consuming the added $H^+$ and maintaining the pH.

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Verbal Reasoning QUESTION #8072

Question 483

Given that $p$ and $q$ are different prime numbers, $r$ is the least prime number greater than $p$, and $s$ is the least prime number greater than $q$.

Compare:

Column A: $r - p$

Column B: $s - q$

Column A is greater
Column B is greater
The two quantities are equal
The relationship cannot be determined✔️

Correct Answer Logic:

The difference between a prime and the next prime varies. For example:

$3 - 2 = 1$ (gap of 1)
$5 - 3 = 2$ (gap of 2)
$7 - 5 = 2$ (gap of 2)
$11 - 7 = 4$ (gap of 4)
$23 - 19 = 4$ (gap of 4)

Since $p$ and $q$ are different primes and we don't know which specific primes they are, the gaps $r - p$ and $s - q$ could be equal or different.

For instance:

If $p = 2$ and $q = 3$: then $r = 3, s = 5$, so $r - p = 1$ and $s - q = 2$, making Column B greater
If $p = 3$ and $q = 2$: then $r = 5, s = 3$, so $r - p = 2$ and $s - q = 1$, making Column A greater

Since the relationship depends on which primes are chosen, it cannot be determined from the given information.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3018

Question 484

'Lanolin' is an absorption base also known as:

Soft Paraffin
Wool Fat✔️
Beeswax
Hard Paraffin

Correct Answer Logic:

Lanolin is the purified fat-like substance obtained from sheep's wool.

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Planning QUESTION #4946

Question 485

Which planning legislation was a landmark in UK planning history?

Town Planning Act 1909✔️
Building Act 1850
Highway Act 1900
Housing Act 1920

Correct Answer Logic:

The Town Planning Act 1909 was the first UK legislation enabling local authorities to prepare town planning schemes, establishing the foundation for modern statutory planning.

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Islamic Studies QUESTION #649

Question 486

The capital of the Umayyad dynasty was:

Baghdad
Kufa
Damascus✔️
None of these

Correct Answer Logic:

Muawiyah I established Damascus as the central capital of the Umayyad Empire.

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Dairy Food Science and Technology QUESTION #5893

Question 487

The term 'syneresis' in the context of yoghurt and cheese refers to:

Microbial spoilage causing off-flavors
Contraction of the protein gel network expelling whey✔️
Excessive lactose crystallization causing sandiness
Lipid oxidation causing rancidity

Correct Answer Logic:

Syneresis is the spontaneous contraction of the casein gel/curd matrix expelling entrapped whey. In yoghurt, excessive syneresis causes a watery layer. It is influenced by protein concentration, $\text{pH}$ at gelation, heat treatment of milk, and rate of acidification.

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General Knowledge QUESTION #4642

Question 488

There are 26 steps in a Church. In the time Sandy comes down two steps, Plato goes one step. If they start simultaneously and keep their speed uniform, then at which step from bottom will they meet.

$9^{th}$✔️
$12^{th}$
$13^{th}$
$8^{th}$

Correct Answer Logic:

No explanation provided for this question.

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Paper-I (Pharmaceutics II (Industrial and Quality Control) and Pharmaceutics III (Hospital and Community Pharmacy)) QUESTION #5747

Question 489

What is a 'Medication Profile' which is maintained by hospital pharmacists?

A list of hospital employees
A patient's drug history and current therapy record✔️
A brochure for surgical instruments
A map of the pharmacy layout

Correct Answer Logic:

A medication profile is a record of the patient's drug therapy.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3037

Question 490

'Autoclaving' uses which type of heat for sterilization?

Dry heat
Moist heat (Steam under pressure)✔️
Radiant heat
Chemical heat

Correct Answer Logic:

Autoclaving is the most effective method of moist heat sterilization.

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English QUESTION #7549

Question 491

Choose the most appropriate meaning of the idiomatic phrase "To run the gamut"

To repeat a mistake.
To conceal important facts.
To end a discussion abruptly.
To cover a wide range of things.✔️

Correct Answer Logic:

To run the gamut means to experience or cover the entire range or scale of something.

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Chemistry QUESTION #5559

Question 492

Among the given vitamins, which one is water-soluble?

Vitamin C✔️
Vitamin D
Vitamin E
Vitamin K

Correct Answer Logic:

Vitamins are classified as water-soluble (B-complex and C) or fat-soluble (A, D, E, K). Vitamin C (ascorbic acid) is water-soluble — it dissolves in water and is not stored in the body, so regular dietary intake is required. Vitamins D, E, and K are fat-soluble.

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Chemistry QUESTION #437

Question 493

The extent of un-saturation in a fat is expressed as its

Acid number
Iodine number✔️
Saponification number
None of these

Correct Answer Logic:

Iodine number measures unsaturation

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English QUESTION #2765

Question 494

Find the word OPPOSITE IN MEANING to 'Transparent'.

Clear
Obvious
Opaque✔️
Visible

Correct Answer Logic:

'Transparent' means allowing light to pass through so objects can be clearly seen (also means open/honest). Its antonym is 'Opaque', which means not allowing light to pass through or not clear.

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Islamic Studies QUESTION #659

Question 495

Who introduced the postal system (Barid) in the Islamic state?

Hazrat Umar
Hazrat Muawiyah✔️
Abdul Malik bin Marwan
None of these

Correct Answer Logic:

Hazrat Muawiyah I is credited with establishing the organized postal service.

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Islamic Studies QUESTION #340

Question 496

Which Caliph was the first to set the punishment for drinking at eighty lashes?

Hazrat Ali
Hazrat Usman
Hazrat Umar✔️
Hazrat Abu Bakr

Correct Answer Logic:

Hazrat Umar (RA) increased the punishment from 40 to 80 lashes after consultation with the Sahaba.

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Civil Engineering QUESTION #6596

Question 497

According to ACI 318-95 load combination recommendations, the load factor applied to wind load $W$ is:

1.4
1.7
1.3✔️
0.9

Correct Answer Logic:

Per ACI 318-95, the load combination including wind is $U = 0.75(1.4D + 1.7L + 1.7W)$, giving an effective wind load factor of $0.75 \times 1.7 = 1.275 \approx 1.3$. Also used as $1.3W$ directly in some combinations.

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Accounting & Finance QUESTION #1195

Question 498

Accounting information is said to be relevant when it:

Is free from material error.
Influences the decision-making of users.✔️
Can be compared across entities.
Is supported by evidence from independent sources.

Correct Answer Logic:

Relevance is a fundamental qualitative characteristic of useful financial information (per IASB Conceptual Framework). Information is relevant if it is capable of making a difference in the decisions made by users — it has predictive value, confirmatory value, or both. Being free from error refers to faithful representation, not relevance.

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Boilers Mechanical Engineering QUESTION #2414

Question 499

The hoop (circumferential) stress $\sigma_h$ in a thin-walled cylinder (wall thickness $t$, internal diameter $d$, internal pressure $p$) is:

$\sigma_h = pd/(4t)$
$\sigma_h = pd/(2t)$✔️
$\sigma_h = 2pd/t$
$\sigma_h = pt/d$

Correct Answer Logic:

For a thin-walled cylinder ($t<0.1d$), hoop stress: $\sigma_h=pd/(2t)=pr/t$. The longitudinal stress is half: $\sigma_l=pd/(4t)=\sigma_h/2$.

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Library Sciences QUESTION #1507

Question 500

Which of the following is a major challenge in the organization of information specific to Pakistan?

Overabundance of trained cataloguers
Lack of standardized cataloguing practices and insufficient trained personnel✔️
Excessive adoption of RDA
Surplus of authority files in Urdu

Correct Answer Logic:

A major challenge in Pakistan's information organization environment includes the lack of standardized cataloguing practices, inadequate training of library personnel, limited automation, and the absence of comprehensive authority files for local names and Urdu-language resources.

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