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Math Physics Chemistry Biology QUESTION #746

Question 1

The force F experienced by a conductor of length L carrying current when placed in a uniform magnetic field B is:

F = B/iL
F = IL/B
F = BiL✔️
F = L x B/I

Correct Answer Logic:

The force on a current-carrying conductor in a magnetic field is F = BIL sinθ. For perpendicular field F = BiL.

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Quantitative Reasoning QUESTION #8128

Question 2

A certain novelist devotes so much description to his characters' clothing that readers quickly sense that such _______ concerns, while not unworthy of notice, have crowded out any more purely literary goals.

didactic
syntactical
irrelevant
sartorial✔️

Correct Answer Logic:

The passage is entirely about descriptions of clothing. Sartorial means relating to tailoring or clothing — it's precisely the word that describes fashion/dress concerns. 'Didactic' means instructional. 'Syntactical' relates to grammar. 'Irrelevant' would be a judgment, not a description of the type of concern. Only 'sartorial' accurately labels the category of concern being described.

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Pakistan Affairs QUESTION #138

Question 3

What is the approximate area covered by Pakistan's forests?

9%
7%
5%
4.80%✔️

Correct Answer Logic:

According to most international and government reports, Pakistan's forest cover is approximately 4.8% to 5%.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3395

Question 4

'Co-enzymes' are often derived from:

Minerals
Vitamins✔️
Carbohydrates
Fats

Correct Answer Logic:

Many B-complex vitamins serve as precursors for essential co-enzymes (like $NAD^+$).

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Chemistry QUESTION #7379

Question 5

In Bohr's atomic model, how are orbital radius $r$ and energy $E$ related to orbit number $n$?

$r \propto n^2$ and $E \propto \dfrac{1}{n^2}$✔️
$r \propto \dfrac{1}{n^2}$ and $E \propto n^2$
$r \propto \dfrac{1}{n}$ and $E \propto n$
$E \propto n^2$ and $r \propto n^2$

Correct Answer Logic:

Bohr's model relationships:
$r_n = a_0 \cdot \dfrac{n^2}{Z}$ → $r \propto n^2$

$E_n = -13.6 \cdot \dfrac{Z^2}{n^2}$ eV → $E \propto -\dfrac{1}{n^2}$

As orbit number increases, radius increases (electrons move farther out) while energy becomes less negative (electrons become less tightly bound). For hydrogen (Z=1): $r_1 = 0.529$ Å (Bohr radius).

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English Literature QUESTION #698

Question 6

What is the main conflict in "The Scarlet Letter"?

Man vs. Nature
Man vs. Society✔️
Man vs. Technology
None of these

Correct Answer Logic:

The novel centers on Hester Prynne's struggle against the rigid, judgmental Puritan community.

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MCQs Section QUESTION #4864

Question 7

Choose the correct antonym of "TWINE"

Straighten
Continue
Unravel✔️
Detach

Correct Answer Logic:

Twine means to twist or wind together. Its antonym is 'unravel,' meaning to undo a twisted or tangled state and separate the threads.

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The Elections Act 2017 QUESTION #9422

Question 8

Section 47(2) requires the Commission to take special measures to reduce gender disparity in voter registration when the variation in registered men and women voters in a constituency exceeds:

Fifteen percent
Five percent
Ten percent✔️
Twenty percent

Correct Answer Logic:

Section 47(2) states: 'Where the variation in the disaggregated data under sub-section (1) is more than ten percent in a constituency, the Commission shall take special measures to reduce such variation.'

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Quantitative Reasoning QUESTION #8015

Question 9

Choose the word that is most nearly opposite in meaning to DIVULGE

keep secret
evaluate by oneself
refine
restore✔️

Correct Answer Logic:

DIVULGE means to reveal or disclose secret information. The direct opposite is to keep secret: if divulging is revealing what was hidden, keeping secret is concealing or not revealing information.

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Boilers Mechanical Engineering QUESTION #4068

Question 10

'Telltale Holes' are sometimes drilled into stay-bolts to:

Look inside the boiler
Leak steam/water if the bolt cracks inside, alerting the operator✔️
Let air out
Light the fire

Correct Answer Logic:

It is a simple visual warning system for structural failure.

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Contracts QUESTION #5857

Question 11

A Seller sends a shipment of 'FOB Buyer’s Warehouse.' When does the risk of loss pass to the Buyer?

When the Seller delivers the goods to the carrier.
When the goods reach the Buyer’s warehouse and are tendered to the Buyer.✔️
When the Buyer pays for the goods.
When the goods are manufactured.

Correct Answer Logic:

A 'Destination Contract' (FOB Place of Destination) shifts the risk of loss to the buyer only when the goods are duly tendered at the specified destination.

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Molecular Biology / Bioinformatics / Biochemistry QUESTION #11072

Question 12

Bird vertebrae are characterised as:

Acoelous
Heterocoelous✔️
Amphicoelous
Procoelous

Correct Answer Logic:

Heterocoelous vertebrae are unique to birds (class Aves). The articular surfaces of the centra are saddle-shaped — concave in one direction and convex in the perpendicular direction (like a horse saddle). This configuration allows flexibility in multiple planes while providing strong interlocking joints, supporting the demands of flight. Amphicoelous (concave on both ends) is found in fish; procoelous (concave anteriorly) in frogs and reptiles; acoelous (flat) in mammals.

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English QUESTION #2694

Question 13

Select the correct sentence:

I prefer tea than coffee.
I prefer tea to coffee.✔️
I prefer tea over coffee.
I prefer tea for coffee.

Correct Answer Logic:

The verb 'prefer' is followed by the preposition 'to' when comparing two things.

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Islamic Studies QUESTION #643

Question 14

In the battle of Tabuk the Holy Prophet (ﷺ) led an army containing ________ men.

40,000
30,000✔️
50,000
None of these

Correct Answer Logic:

The Muslim army for the expedition to Tabuk consisted of 30,000 soldiers.

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Information Technology QUESTION #1127

Question 15

The process of deleting an element from an empty stack is called:

Overflow
Deletion
Underflow✔️
None of these

Correct Answer Logic:

Stack Underflow occurs when an attempt is made to pop (delete) an item from a stack that contains no elements.

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Mathematics QUESTION #7434

Question 16

If the angles of elevation of the top of a tower from three collinear points A, B and C, on a line leading to the foot of the tower, are 30°, 45° and 60° respectively, then the ratio AB : BC is:

$\sqrt{3}:1$✔️
$\sqrt{3}:\sqrt{2}$
$1:\sqrt{3}$
2:03

Correct Answer Logic:

Let the height of tower be $h$ and distances from tower foot be $x_A, x_B, x_C$. From the angles: $\tan(30°) = \frac{h}{x_A}$ gives $x_A = h\sqrt{3}$; $\tan(45°) = \frac{h}{x_B}$ gives $x_B = h$; $\tan(60°) = \frac{h}{x_C}$ gives $x_C = \frac{h}{\sqrt{3}}$. Since points are collinear with C closest to tower: $AB = x_A - x_B = h\sqrt{3} - h = h(\sqrt{3}-1)$ and $BC = x_B - x_C = h - \frac{h}{\sqrt{3}} = h\frac{\sqrt{3}-1}{\sqrt{3}}$. Therefore, $\frac{AB}{BC} = \frac{h(\sqrt{3}-1)}{h\frac{\sqrt{3}-1}{\sqrt{3}}} = \sqrt{3}$. The ratio is $\sqrt{3}:1$.

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Education QUESTION #11675

Question 17

Which research technique involves direct, face-to-face conversation between the researcher and the respondent?

Questionnaire
Interview✔️
Observation
None of these

Correct Answer Logic:

An interview is a data collection technique involving direct, face-to-face dialogue. The researcher asks questions verbally and records responses, allowing for clarification and probing. A questionnaire is self-administered (in writing), and observation involves watching and recording behavior without direct questioning.

Correct Answer: B — Interview.

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Law QUESTION #9518

Question 18

A interpleader suit is filed by a stakeholder who holds money to which both B and C lay claims. B argues that only B and the stakeholder have a dispute, not B and C. Is B's argument a ground to reject the interpleader suit?

No; but only the High Court can entertain interpleader suits
Yes; an interpleader suit requires a direct dispute between B and C
No; Section 88 CPC requires only that the stakeholder holds money or property and two or more persons make adverse claims to it; the stakeholder's own interest is in having the Court determine the competing claims so as to be protected from multiple liabilities; a dispute between B and C inter se is not required✔️
Yes; interpleader suits are only for moveable property

Correct Answer Logic:

Section 88 CPC provides that where two or more persons claim adversely to one another the same debt, sum of money, or other property from a person who has no interest in the matter other than the charges, an interpleader suit may be filed. The essence is adverse claims against the stakeholder, not necessarily a direct dispute between the claimants inter se.

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MBBS QUESTION #10232

Question 19

Lambert-Eaton myasthenic syndrome, often paraneoplastic (associated with small cell lung cancer), differs from myasthenia gravis in that its autoantibodies target:

Postsynaptic acetylcholine receptors
Presynaptic voltage-gated calcium channels, impairing calcium-dependent acetylcholine vesicle release✔️
Muscle-specific kinase (MuSK) exclusively
The motor end-plate acetylcholinesterase enzyme

Correct Answer Logic:

In Lambert-Eaton syndrome, antibodies against presynaptic voltage-gated calcium channels impair ACh release; unlike myasthenia gravis, strength characteristically improves with repeated muscle use (as residual calcium accumulates presynaptically), a key clinical distinguishing feature.

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Math Physics Chemistry Biology QUESTION #4272

Question 20

Nissl's granule is a specialized structure in a neuron formed by modification of:

Golgi bodies & Smooth ER
Peroxisome & Mitochondria
Lysosome & Vacuole
Ribosome & Rough ER✔️

Correct Answer Logic:

Nissl granules are found in neurons and are formed from rough endoplasmic reticulum (RER) and ribosomes. They are involved in active protein synthesis.

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