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Math Physics Chemistry Biology QUESTION #7776

The ester formed from a fatty acid and a long-chain alcohol is called:

Acylglycerol
Glycerol
Phospholipid
Wax✔️

Correct Answer Logic:

Waxes are esters of long-chain fatty acids with long-chain alcohols. Acylglycerols (fats/oils) are esters with glycerol. Phospholipids have a phosphate group.

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Islamic Studies QUESTION #8226

Question 2

What caused Hazrat Usman's (R.A.) death?

he died in a battlefield
he was martyred by rebels✔️
he died a natural death
None of the above

Correct Answer Logic:

Hazrat Usman (RA) was martyred by rebels on 18 Dhul Hijjah 35 AH (June 656 CE) while reciting the Quran in his home in Medina. He was 82 years old and had been Caliph for 12 years. A group of rebels from Egypt, Kufa, and Basra laid siege to his house and eventually broke in and killed him. His martyrdom was a tragic event that led to the first major civil conflict (fitna) in Islamic history.

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Civil Procedure QUESTION #5683

Question 3

A plaintiff files a notice of voluntary dismissal under Rule 41(a)(1)(A)(i). When is this dismissal with prejudice?

Always, unless the notice states otherwise.
Never, voluntary dismissals are always without prejudice.
If the plaintiff has previously dismissed any federal- or state-court action based on or including the same claim.✔️
Only if the court orders it so.

Correct Answer Logic:

Rule 41(a)(1)(B) contains the 'two-dismissal rule': if the plaintiff has previously dismissed any action based on the same claim, a second notice of dismissal operates as an adjudication on the merits (with prejudice).

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Chemistry QUESTION #7198

Question 4

Identify the most stable carbocation among the following species.

$(CH_{3})_{3}C^{+}$✔️
$CH_{3}CH_{2}^{+}$
$CH_{3}^{+}$
$(CH_{3})_{2}CH^{+}$

Correct Answer Logic:

The stability of carbocations follows the order: $3^{\circ} > 2^{\circ} > 1^{\circ} > \text{methyl}$.

$(CH_{3})_{3}C^{+}$ is a tertiary ($3^{\circ}$) carbocation. It is the most stable due to the maximum inductive effect (+I) and hyperconjugation from the nine $\alpha$-hydrogens[cite: 3, 49].

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Psychology QUESTION #9861

Question 5

The overall bodily and mental growth curves for men:

Diverge at puberty age
Run parallel courses✔️
Show a drop at puberty age
Both run parallel and diverge at puberty

Correct Answer Logic:

Physical and mental growth trajectories broadly run parallel courses, both showing gradual increases through childhood and adolescence, with physical growth plateauing earlier than cognitive development.

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ETAG General Aptitude QUESTION #3766

Question 6

Four landmarks H1, H2, H3, and H4 are located in a park. 1) H2 and H3 are not the easternmost. 2) H2 and H3 are not the westernmost. 3) The easternmost and westernmost are not the southernmost. 4) Two landmarks are west of H2. 5) The southernmost has at least two landmarks to its east. Which landmark is the southernmost?

H1✔️
H2
H3
H4

Correct Answer Logic:

Based on logical deduction of positions, H1 is the only landmark satisfying the condition of being the southernmost with at least two hills to its east.

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Pakistan Affairs QUESTION #285

Question 7

Why Arab rule could not extend beyond Sindh and Multan?

Geographical barriers and rigid terrain
Strong resistance from local rulers✔️
Lack of interest in territorial expansion
Internal conflicts among the Arabs

Correct Answer Logic:

Strong resistance from local Hindu dynasties like the Gurjara-Pratiharas halted further Arab expansion.+1

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MCQs Section QUESTION #4875

Question 8

Correct antonym of "DEMOGRAPHIC" is

Relating to the study of population
Demons
Communications
Government✔️

Correct Answer Logic:

Demographic relates to the structure of a population. Among the options, 'government' represents a contrasting concept focusing on political authority rather than population data.

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Chemistry QUESTION #7355

Question 9

The total number of atomic orbitals present in the fourth principal energy level ($n = 4$) of an atom is:

8
16✔️
32
4

Correct Answer Logic:

Formula: Total orbitals in shell $n$ = $n^2$

For $n = 4$: $4^2 = 16$ orbitals

Breakdown:

4s: 1 orbital
4p: 3 orbitals
4d: 5 orbitals
4f: 7 orbitals
Total = 1+3+5+7 = 16

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Pakistan Affairs QUESTION #9054

Question 10

The Governor of a province in Pakistan is appointed by:

The Prime Minister
The Chief Minister
The President✔️
The National Assembly

Correct Answer Logic:

The President appoints Governors on the advice of the Prime Minister.

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Physics QUESTION #1048

Question 11

In a certain camera, four identical thin convex lenses are arranged axially in contact. Power and magnification compared to individual lens (power $p$, magnification $m$):

4p and $m^4$✔️
p^4 and $m^4$
4p and 4m
p^4 and 4m

Correct Answer Logic:

Power of lenses in contact adds: $P_{total}=4p$. For magnification: lenses in contact act as one system, but if we consider each lens magnifying, total magnification $= m\times m\times m\times m = m^4$. Answer: 4p and $m^4$.

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Math Physics Chemistry Biology QUESTION #4216

Question 12

Which organelle serves as a packaging and a distribution center for molecules within the cells?

Golgi apparatus✔️
Mitochondria
Ribosome
Vacuole

Correct Answer Logic:

Golgi apparatus packages and distributes molecules.

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English QUESTION #4459

Question 13

Which of the following sentences is INCORRECT?

Although it rained a lot, they enjoyed themselves.
It rained a lot, but they enjoyed themselves.
Despite of the rain, they enjoyed themselves.✔️
None of these

Correct Answer Logic:

The word 'Despite' is a preposition that should never be followed by 'of'. The correct phrase is either 'Despite the rain' or 'In spite of the rain'.

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Child Health QUESTION #3925

Question 14

A term infant is delivered via ventouse assistance with light meconium-stained fluid. The baby is slow to initiate breathing, with Apgar scores of $3$ at $1$ minute, $5$ at $5$ minutes, and $9$ at $10$ minutes. Which step is most crucial for successful neonatal resuscitation?

Suctioning of the mouth and nose✔️
Insertion of a Guedel airway
Establishing adequate ventilation
Administration of supplemental oxygen

Correct Answer Logic:

2

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Library Sciences QUESTION #1518

Question 15

A 'trade bibliography' such as Books in Print serves which primary function?

Listing all manuscripts held in national archives
Identifying and verifying books that are currently available for purchase✔️
Providing biographical data about authors
Indexing journal articles in a subject field

Correct Answer Logic:

Trade bibliographies like Books in Print list books currently available for purchase from publishers and booksellers. They are essential tools for acquisitions librarians, booksellers, and anyone verifying the commercial availability of a title.

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Accounting & Finance QUESTION #1230

Question 16

When the market's required rate of return for a bond is much less than its coupon rate, the bond is selling at:

A premium✔️
A discount
Cannot be determined without more information
Face value

Correct Answer Logic:

When the market's required rate of return (yield) is less than the bond's coupon rate, investors are willing to pay more than face value for the bond because it offers above-market interest payments. The bond therefore sells at a premium (price > face value). Conversely, when yield > coupon rate, the bond sells at a discount.

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Ability / HR / Governance / Special Education QUESTION #1813

Question 17

According to Rule 46(1), procuring agencies are required to maintain records of their procurement proceedings along with all associated documentation for a minimum period of:

Two years
Three years
Five years✔️
Seven years

Correct Answer Logic:

Rule 46(1) mandates that all procuring agencies shall maintain a record of their respective procurement proceedings along with all associated documentation for a minimum period of five years, subject to any additional regulations framed in this regard.

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Electrical Engineering QUESTION #2139

Question 18

A $4$-pole induction motor is supplied by a $50\text{ Hz}$ source. If the slip $s$ is $0.04$, what is the actual speed of the rotor $N_r$ in RPM?

$1500\text{ RPM}$
$1440\text{ RPM}$✔️
$1410\text{ RPM}$
$1560\text{ RPM}$

Correct Answer Logic:

Synchronous speed $N_s = \frac{120f}{P} = \frac{120 \times 50}{4} = 1500\text{ RPM}$. Rotor speed $N_r = N_s(1 - s) = 1500(1 - 0.04) = 1440\text{ RPM}$.

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