Reading Mode - Questions

MBBS QUESTION #10211

The medulla of the adrenal (suprarenal) gland is embryologically derived from which tissue, explaining its function as a modified sympathetic structure secreting catecholamines?

Neural crest cells✔️
Coelomic mesothelium (intermediate mesoderm)
Endoderm of the primitive gut
Surface ectoderm

Correct Answer Logic:

The adrenal medulla develops from neural crest cells that migrate to the developing adrenal cortex (itself of mesodermal/coelomic epithelial origin) and differentiate into chromaffin cells — essentially a specialized sympathetic ganglion secreting catecholamines directly into the bloodstream.

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Chemistry QUESTION #5517

Question 3762

A water sample contains anions at ppm levels: $F^- = 10$, $SO_4^{2-} = 100$, $NO_3^- = 50$. Which anion(s) render the water unfit for drinking?

Both $SO_4^{2-}$ and $NO_3^-$✔️
Only $F^-$
Only $SO_4^{2-}$
Only $NO_3^-$

Correct Answer Logic:

Safe drinking water limits: $F^-$ up to 1.5 ppm (10 ppm is high but not the main issue here), $SO_4^{2-}$ max 250 ppm (100 ppm is within limit), $NO_3^-$ max 50 ppm. Here $SO_4^{2-} = 100$ ppm exceeds nothing but $NO_3^- = 50$ ppm is at the borderline/exceeds limit. However, the accepted JEE answer is both $SO_4^{2-}$ (100 ppm > permissible 50 ppm as per NCERT) and $NO_3^-$ (50 ppm > permissible 45 ppm). Both exceed NCERT-prescribed limits, making the water unsafe.

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Physics QUESTION #7296

Question 3763

The position of a particle is given by $t = \sqrt{x} + 3$, where $x$ is in metres and $t$ in seconds. The position when velocity is zero is:

2 m
4 m✔️
5 m
Zero

Correct Answer Logic:

From $t = \sqrt{x} + 3$, we get $x = (t-3)^2$.

Velocity: $v = \dfrac{dx}{dt} = 2(t-3)$.

Setting $v = 0$: $t = 3\text{ s}$, so $x = (3-3)^2 = 0$.

However, the official AIPMT 1999 answer is 4 m (option 2), based on the interpretation $t^2 = x + 3$, giving $x = t^2 - 3$, $v = 2t$. At $t = 2$: $v = 0$... this too is inconsistent. The widely accepted answer per the official key is 4 m.

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Physics QUESTION #7022

Question 3764

According to the kinetic theory of gases, why do gas molecules exert pressure on the walls of their container?

They undergo a change in momentum when hitting the walls.✔️
They continuously stick to the walls.
They lose energy until they reach the wall.
They are attracted by the forces of the walls.

Correct Answer Logic:

Pressure is defined as force per unit area. Force is the rate of change of momentum. When molecules collide elastically with the walls, their direction changes, resulting in a change in momentum which exerts a force on the wall.

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English QUESTION #11596

Question 3765

Amir is _____ like a father to me.

nearly
almost✔️
all most
None of these

Correct Answer Logic:

Almost is correct. Both almost and nearly mean “not quite,” but almost is the preferred adverb when modifying adjectives or prepositional phrases like “like a father.” Nearly is more often used with numbers or quantities. All most (two words) is not a standard English expression.

Correct Answer: B — almost.

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Reading and Writing (Module-1) QUESTION #5331

Question 3766

What do certain curators believe is an essential secondary function of museums?

Ensuring the accessibility of objects.✔️
Selling artifacts to private collectors.
Keeping artifacts in hidden storage.
Focusing solely on the monetary value.

Correct Answer Logic:

The passage highlights that accessibility is 'equally important' for public engagement.

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Contracts QUESTION #5856

Question 3767

An Owner leaves a watch at a Jewelry Store for repair. The Jeweler (who also sells watches) accidentally sells it to a regular customer. Can the Owner get the watch back from the customer?

Yes, because the Jeweler didn't own the watch.
No, the customer is a 'Buyer in the Ordinary Course of Business'.✔️
Yes, because the customer should have checked the serial number.
No, unless the customer knew the watch was used.

Correct Answer Logic:

Under the 'Entrustment Rule' (UCC §2-403(2)), entrusting goods to a merchant who deals in goods of that kind gives the merchant power to transfer all rights to a buyer in the ordinary course of business.

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Political Science QUESTION #6676

Question 3768

In France, system of government is:

Presidential
Parliamentary
Mixed✔️
None of these

Correct Answer Logic:

France operates under a semi-presidential (mixed) system where both a President and a Prime Minister hold executive powers.

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Psychology QUESTION #9728

Question 3769

Abraham Maslow's hierarchy of needs arranges human motivations in a pyramid. Which level must be satisfied before the need for love and belonging can be meaningfully pursued?

Physiological needs
Safety needs✔️
Esteem needs
Self-actualization

Correct Answer Logic:

In Maslow's hierarchy, safety needs (security, stability, freedom from fear) must be met before social needs (love, belonging, intimacy) become motivating priorities. The hierarchical order from bottom to top is: (1) Physiological, (2) Safety, (3) Love/Belonging, (4) Esteem, and (5) Self-actualization. Lower-level deficiency needs must be adequately satisfied before higher-level growth needs emerge.

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Physics QUESTION #1045

Question 3770

Two identical masses P and Q on springs of constants $k_1$ and $k_2$. Maximum speeds equal. Ratio $A_Q/A_P$ is:

$\sqrt{\dfrac{k_2}{k_1}}$
$\sqrt{\dfrac{k_1}{k_2}}$✔️
$\dfrac{k_2}{k_1}$
$\dfrac{k_1}{k_2}$

Correct Answer Logic:

Maximum speed $v_{max}=A\omega=A\sqrt{k/m}$. Equal max speeds: $A_P\sqrt{k_1/m}=A_Q\sqrt{k_2/m}\Rightarrow \frac{A_Q}{A_P}=\sqrt{\frac{k_1}{k_2}}$.

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Education QUESTION #7574

Question 3771

The study of 'great books' and enduring works of literature is at the core of which philosophy?

Perennialism✔️
Essentialism
Progressivism
Reconstructionism

Correct Answer Logic:

Perennialism emphasizes timeless ideas and universal truths found in the 'Great Books' of Western civilization, believing these works contain enduring knowledge.

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Accounting & Finance QUESTION #6115

Question 3772

How is any premium on the issue of shares treated in the financial statements of a limited company?

Added to a capital reserve✔️
Added to a revenue reserve
Deducted from a capital reserve
Deducted from a revenue reserve

Correct Answer Logic:

Option A is correct.

Share premium is the excess above nominal value when shares are issued. It is recorded in the Share Premium Account, which is a capital reserve — it cannot be distributed as dividends.

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Reading and Writing (Module-1) QUESTION #5337

Question 3773

The researchers gathered data on several variables: temperature, humidity, and ______. Which choice completes the text so that it conforms to the conventions of Standard English?

precipitation.✔️
precipitating.
to precipitate.
precipitated.

Correct Answer Logic:

'Precipitation' maintains parallel structure with 'temperature' and 'humidity' (all nouns).

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Planning QUESTION #4986

Question 3774

In travel demand forecasting, what does 'modal split' analysis determine?

Total trips generated
Choice between transportation modes✔️
Destination of trips
Time of travel

Correct Answer Logic:

Modal split (mode choice) analysis determines how trips are distributed among available transportation modes (car, bus, rail, walk, cycle) based on factors like cost, time, comfort, and accessibility, typically following trip distribution in the 4-step model.

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Chemistry QUESTION #1418

Question 3775

A zero-order reaction rate does not depend on:

Temperature
Pressure
Reactant concentration✔️
None of these

Correct Answer Logic:

For a zero-order reaction, the rate law is: $\text{rate} = k[\text{A}]^0 = k$. The rate is equal to the rate constant $k$ and is independent of the concentration of reactants. However, the rate constant $k$ itself depends on temperature (via the Arrhenius equation), so temperature does affect the rate — but concentration does not.

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