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Psychology QUESTION #9936

The most frequently occurring major psychological disorder is:

Phobias
Schizophrenia
Depression✔️
Bipolar disorder

Correct Answer Logic:

Depression (major depressive disorder) is the most common serious psychological disorder worldwide, with lifetime prevalence of 10–20%. The WHO identifies it as a leading cause of disability globally.

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Electrical Engineering QUESTION #2169

Question 2262

The characteristic equation $s^4 + 2s^3 + 3s^2 + 4s + 5 = 0$ describes a control system. Using the Routh-Hurwitz criterion, how many roots lie in the right-half s-plane?

$2$✔️
$0$
$4$
$1$

Correct Answer Logic:

Routh first-column elements are: $1, 2, 1, -6, 5$. There are 2 sign changes (at $-6$ and back to $5$), confirming 2 roots in the RHP and an unstable system.

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Sociology QUESTION #1665

Question 2263

Herbert Spencer adapted Darwinian evolutionary principles to the analysis of human societies, arguing that social progress results from competitive selection among individuals and groups. This perspective is most accurately identified as:

Survival of the fittest applied to social evolution and competition✔️
Class struggle as the engine of historical transformation
The development of social solidarity through collective consciousness
The progressive rationalization of social institutions

Correct Answer Logic:

Herbert Spencer's Social Darwinism applied the principle of 'survival of the fittest' (a phrase Spencer himself coined) to human society, arguing that social inequality and competition are natural and that social progress results from the elimination of the weak and the flourishing of the strong — a perspective later used to justify laissez-faire capitalism and imperialism.

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Library Sciences QUESTION #1564

Question 2264

In library automation, the MARC 21 format is used primarily for:

Designing library building layouts
Encoding bibliographic, authority, holdings, and community information in a machine-readable structure✔️
Providing digital access to rare manuscripts
Managing library staff payroll

Correct Answer Logic:

MARC 21 (Machine-Readable Cataloguing) is a standard format for encoding bibliographic and related data so that records can be created, stored, exchanged, and processed by computer systems. It is the backbone of shared cataloguing and ILS operations worldwide.

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Ability / HR / Governance / Special Education QUESTION #1929

Question 2265

Under Rule 22(3) summaries for the National Economic Council must reach the Cabinet Division at least how many clear days in advance of the meeting?

Seven clear days
Ten clear days
Fourteen clear days
Fifteen clear days✔️

Correct Answer Logic:

Rule 22(3) specifically requires that summaries for the National Economic Council shall reach the Cabinet Division at least fifteen clear days in advance of the commencement of the meeting — distinct from the seven clear days required for Cabinet cases.

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Political Science QUESTION #6687

Question 2266

The 'Shadow Cabinet' is a feature of which political system?

USA
France
UK✔️
None of these

Correct Answer Logic:

The Shadow Cabinet is a specialized group of opposition senior spokespeople in the Westminster (UK) system.

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Math Physics Chemistry Biology QUESTION #579

Question 2267

Which of the following do not have a body cavity?

Pseudocoelomata
Acoelomata✔️
Coelomata
None of these

Correct Answer Logic:

Acoelomates lack body cavity

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Physics QUESTION #7003

Question 2268

A satellite orbits Earth at constant speed $v$. A mass $m$ is ejected from it so that it just barely escapes Earth's gravitational pull. What additional kinetic energy must be given to mass $m$?

$2mv^2$
$mv^2$
$\dfrac{1}{2}mv^2$✔️
$\dfrac{3}{2}mv^2$

Correct Answer Logic:

The satellite is in circular orbit at some radius $r$: $v = \sqrt{GM/r}$, so $v^2 = GM/r$.

Escape speed from radius $r$: $v_e = \sqrt{2GM/r} = v\sqrt{2}$

Extra KE needed $= \frac{1}{2}mv_e^2 - \frac{1}{2}mv^2 = \frac{1}{2}m(2v^2) - \frac{1}{2}mv^2 = \frac{1}{2}mv^2$

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Accounting & Finance QUESTION #6185

Question 2269

Based on the Du Pont Identity, if a firm increases its Debt-Equity ratio while maintaining a constant Profit Margin and Total Asset Turnover, what occurs to the ROE?

ROE decreases due to higher interest expense.
ROE remains constant as it only depends on operating efficiency.
ROE increases because the Equity Multiplier rises.✔️
ROE becomes equal to the ROA.

Correct Answer Logic:

$ROE = \text{Profit Margin} \times \text{Total Asset Turnover} \times \text{Equity Multiplier}$. Increasing debt increases the multiplier, thus raising ROE [cite: 45, 46, 48].

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Physics QUESTION #403

Question 2270

The net magnetic field created by the electrons within an atom is due to the field created by their __________ motion.

Orbital
Spin
Orbital & spin
Orbital x spin✔️

Correct Answer Logic:

Both orbital and spin motions contribute to magnetic field

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Ability / HR / Governance / Special Education QUESTION #1896

Question 2271

Under Rule 3(c)(ii) which lifestyle indicator can make a government servant liable to be considered corrupt?

Owning a vehicle
Residing in a government house
Assuming a style of living beyond his ostensible means✔️
Travelling abroad on official duty

Correct Answer Logic:

Rule 3(c)(ii) specifically mentions assuming a style of living beyond ostensible means as a corruption indicator.

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Egnlish QUESTION #710

Question 2272

In "The Lotus Eater" by Somerset Maugham, the setting of the island represents:

Adventure
Hard work
Apathy and oblivion✔️
Success

Correct Answer Logic:

Like the Odyssey, the island lure represents a life of ease that leads to the loss of ambition and eventual decay.

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General Abilities QUESTION #7964

Question 2273

5448 rounded off to the nearest 1000 is:

6000
5400
5000✔️
4500

Correct Answer Logic:

$5448$ is between 5000 and 6000. Since $448 < 500$, it rounds down to $5000$.

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Boilers Mechanical Engineering QUESTION #4062

Question 2274

'Handholes' are smaller openings used for:

Inspection of headers and smaller areas where a man cannot enter✔️
Waving at people
Pouring fuel
Letting in birds

Correct Answer Logic:

Essential for cleaning out sludge from the bottom of headers.

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General Abilities QUESTION #2891

Question 2275

Find the missing number: $2, 5, 10, 17, \dots, 37$

24
25
26✔️
28

Correct Answer Logic:

The series adds consecutive odd numbers: $+3, +5, +7$. Next is $+9$, so $17+9=26$.

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Law QUESTION #9713

Question 2276

Article 128(2) on legitimacy — the rule of birth during marriage as conclusive proof of legitimacy does NOT apply to:

Muslims
A non-Muslim if it is inconsistent with his faith✔️
Foreigners
Minors

Correct Answer Logic:

Article 128(2) expressly states that nothing in clause (1) shall apply to a non-Muslim if it is inconsistent with his faith.

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Urdu QUESTION #5266

Question 2277

کون سی ضربِ مثل درست ہے؟

چیل کے گھر میں کہاں
چیل کے گھونسلے میں گوشت کہاں✔️
چیل کے گھونسلے میں ماس کہاں
چیل کے گھونسلے میں بلی کہاں

Correct Answer Logic:

صحیح ضربِ مثل ہے: 'چیل کے گھونسلے میں گوشت کہاں'۔

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Urdu QUESTION #5214

Question 2278

'چہارشنبہ' ہفتے کا کون سا دن ہے؟

اتوار
پیر
منگل
بدھ✔️

Correct Answer Logic:

چہارشنبہ فارسی میں چوتھا دن یعنی بدھ ہے۔

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Mathematics QUESTION #6979

Question 2279

For three events $A$, $B$, $C$:
$P(\text{exactly one of }A\text{ or }B) = P(\text{exactly one of }B\text{ or }C) = P(\text{exactly one of }C\text{ or }A) = \dfrac{1}{4}$
$P(A\cap B\cap C) = \dfrac{1}{16}$.
Find $P(\text{at least one of }A, B, C\text{ occurs})$.

$\dfrac{7}{32}$
$\dfrac{7}{16}$✔️
$\dfrac{7}{64}$
$\dfrac{3}{16}$

Correct Answer Logic:

Use: $P(\text{exactly one of }X\text{ or }Y) = P(X)+P(Y)-2P(X\cap Y)$.

Adding all three equations:

$2[P(A)+P(B)+P(C)] - 2[P(A\cap B)+P(B\cap C)+P(C\cap A)] = \dfrac{3}{4}$

$\Rightarrow P(A)+P(B)+P(C) - [P(A\cap B)+P(B\cap C)+P(C\cap A)] = \dfrac{3}{8}$ ...(i)

Using inclusion-exclusion:

$P(A\cup B\cup C) = P(A)+P(B)+P(C)-P(A\cap B)-P(B\cap C)-P(C\cap A)+P(A\cap B\cap C)$

$= \dfrac{3}{8} + \dfrac{1}{16} = \dfrac{6}{16}+\dfrac{1}{16} = \dfrac{7}{16}$

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Security Measures to Maintain Law and Order QUESTION #936

Question 2280

Which of the following is an example of a 'Prohibited Item' in the cabin?

A book
A sharp metallic object
A bottle of water (over 100ml)
Both B and C✔️

Correct Answer Logic:

Items that can be used as weapons or liquid explosives are restricted to maintain the order and safety of the flight.

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