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Library Sciences QUESTION #1512

The Universal Decimal Classification (UDC) is an extension of which classification system, incorporating auxiliary tables for greater specificity?

Library of Congress Classification
Colon Classification
Dewey Decimal Classification✔️
Bibliographic Classification

Correct Answer Logic:

UDC was originally developed by Paul Otlet and Henri La Fontaine as an extension of the Dewey Decimal Classification. It adds common and special auxiliary tables using symbols to combine and specify subjects with greater precision.

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Physics QUESTION #1026

Question 2

The kinetic energies of cars A and B are 100 J and 225 J. Car A stops after 1000 m and car B stops after 1500 m. The ratio $F_A/F_B$ is:

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

Correct Answer Logic:

By work-energy theorem: $F \cdot d = KE$. So $F_A = \frac{100}{1000} = 0.1\ \text{N}$ and $F_B = \frac{225}{1500} = 0.15\ \text{N}$. Ratio: $\frac{F_A}{F_B} = \frac{0.1}{0.15} = \frac{2}{3}$. Wait: $\frac{0.1}{0.15}=\frac{2}{3}$. Answer is option (4) = $\frac{2}{3}$... re-checking: $\frac{100/1000}{225/1500}=\frac{0.1}{0.15}=\frac{2}{3}$. Correct option index: 3.

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Administration QUESTION #9601

Question 3

A company's current ratio is 2.5 but its quick ratio is 0.6. What does this disparity most critically reveal about the company's liquidity position, and what risk does it pose to short-term creditors?

The company is in excellent liquidity health — a current ratio above 2.0 always signals strong ability to meet short-term obligations
The company's liquidity is heavily dependent on inventory — if inventory cannot be quickly liquidated (due to obsolescence, market conditions or long conversion cycles), the company may be unable to meet current obligations despite appearing liquid on paper✔️
The company has excessive cash holdings that are suppressing the quick ratio — it should invest idle cash in short-term securities
The disparity indicates aggressive revenue recognition — the company is booking receivables before cash collection, inflating current assets artificially

Correct Answer Logic:

Current ratio includes inventory; quick ratio excludes it. A current ratio of 2.5 with a quick ratio of 0.6 means nearly all current assets are inventory. If inventory is slow-moving, seasonal or perishable, it cannot reliably convert to cash in time to meet current liabilities. This is precisely the risk creditors face — apparent liquidity that evaporates when inventory cannot be sold, a common precursor to liquidity crises in retail and manufacturing firms.

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Physics QUESTION #7039

Question 4

In SI units, a material's density is $128 \text{ kg m}^{-3}$. Calculate its numerical value in a system where the unit of length is $25 \text{ cm}$ and the unit of mass is $50 \text{ g}$.

$40$✔️
$16$
$640$
$410$

Correct Answer Logic:

Using $n_1 u_1 = n_2 u_2$:

$128 \times [\text{kg} \cdot \text{m}^{-3}] = n_2 \times [(50 \text{ g}) \cdot (25 \text{ cm})^{-3}]$

$n_2 = 128 \times \left( \frac{1000 \text{ g}}{50 \text{ g}} \right) \times \left( \frac{25 \text{ cm}}{100 \text{ cm}} \right)^3$

$n_2 = 128 \times 20 \times \left( \frac{1}{4} \right)^3 = \frac{128 \times 20}{64} = 2 \times 20 = 40$.

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The Elections Act 2017 QUESTION #9440

Question 5

Under Section 85, when a voter finds that another person has already voted in his name and he applies for a ballot paper, a 'Tendered Ballot Paper' is issued. The key distinction is how it is deposited — it is placed:

Into the regular ballot box in the same manner as ordinary votes
Into a separate packet labeled 'Tendered Ballot Papers' and not in the ballot box✔️
Held by the Presiding Officer until the voting is challenged before a tribunal
Counted immediately at the polling station by the Presiding Officer

Correct Answer Logic:

Section 85(2) states: 'The Presiding Officer shall, after the voter has marked and folded the Tendered Ballot Paper, place it in the same condition in a separate packet bearing the label 'Tendered Ballot Papers' instead of being placed in the ballot box.'

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Logical Reasoning QUESTION #4434

Question 6

How many trees are in the orchard? Which of the statements below are needed to sufficiently answer this question? I. Ibrahim is a farmer and looks after half of the trees in the orchard. II. $300$ trees in the orchard are under Ibrahim's care.

I is enough
II is enough
Both I and II are needed✔️
Neither I nor II are sufficient

Correct Answer Logic:

Statement I alone tells us Ibrahim looks after half the trees but gives no actual number. Statement II alone tells us $300$ trees are under Ibrahim's care but does not tell us what fraction that is. Together: if Ibrahim cares for half the trees and that equals $300$, then total trees $= 300 \times 2 = 600$. Both statements are needed.

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Education QUESTION #7566

Question 7

Which domain of educational objectives is NOT being properly evaluated through our present system of examination?

Psycho motor
Classroom
Affective✔️
Cognitive

Correct Answer Logic:

The affective domain, which includes attitudes, values, emotions, and feelings, is often neglected in traditional examination systems that focus primarily on cognitive outcomes.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3622

Question 8

Which drug is used as a 'Demulcent' and is obtained from 'Plantago ovata'?

Ispaghula (Psyllium)✔️
Senna
Digitalis
Cinnamon

Correct Answer Logic:

Ispaghula husk is a bulk-forming laxative and demulcent.

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General Abilities QUESTION #4623

Question 9

If $\frac{2}{x} = \frac{8}{12}$, what is $x$?

$2$
$3$✔️
$4$
$6$

Correct Answer Logic:

Cross-multiply: $8x = 24$, so $x = 3$

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General Abilities QUESTION #7997

Question 10

$0.03 \times 10 = ?$

30
3✔️
0.3
0.003

Correct Answer Logic:

$0.03 \times 10 = 0.3$... Answer key gives B (3). $0.03 \times 10 = 0.3$, which is option C. Students should verify: multiply $0.03 \times 10$: move decimal one place right $= 0.3$.

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Boilers Mechanical Engineering QUESTION #4046

Question 11

'Balanced Draft' means:

The boiler is not tilted
Both forced and induced draft fans are used to maintain near-atmospheric pressure in the furnace✔️
The water and steam are equal
The fuel is cheap

Correct Answer Logic:

This prevents flue gas leakage into the boiler room.

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Boilers Mechanical Engineering QUESTION #2386

Question 12

The steady-state error for a unit step input applied to a type-zero closed-loop system (with unity feedback) is:

$E_s = 0$
$E_s = \frac{1}{1+K_p}$ where $K_p = \lim_{s\to 0} Y_1(s)$✔️
$E_s = 1$
$E_s = \infty$

Correct Answer Logic:

For a type-zero system with unit step input: $E_s=\frac{1}{1+Y_1(0)}=\frac{1}{1+K_p}$ where $K_p$ is the position error constant. For a type-one system (pole at origin), $E_s=0$ for a step input.

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Islamic Studies QUESTION #7930

Question 13

In which night the Quran was revealed?

Shab-e-Miraj
Lailat-ul-Qadr✔️
Lail-tul-Aroos
Shab-e-Barat

Correct Answer Logic:

The Quran was revealed on Laylat al-Qadr (The Night of Power), which falls in the last ten nights of Ramadan, most likely the 27th night. This night is described in Surah Al-Qadr as 'better than a thousand months.' The entire Quran was sent down from Lauh al-Mahfuz to the lowest heaven on this night, then revealed gradually to the Prophet over 23 years.

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Boilers Mechanical Engineering QUESTION #3999

Question 14

'Complete Combustion' of fuel requires which three factors (The 3 Ts)?

Temperature, Time, and Turbulence✔️
Tools, Testing, and Training
Tanks, Tubes, and Traps
Tension, Torque, and Tolerance

Correct Answer Logic:

High temperature, sufficient residence time, and mixing (turbulence) ensure all carbon is oxidized to $CO_2$.

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Mathematics QUESTION #4154

Question 15

For a uniform lamina in the shape of a triangle with vertices $(0,0)$, $(a,0)$, $(0,b)$, what is the $y$-coordinate of the center of mass?

$\frac{b}{2}$
$\frac{b}{3}$✔️
$\frac{2b}{3}$
$\frac{b}{4}$

Correct Answer Logic:

For a triangular lamina, center of mass is at the centroid: $(\frac{a}{3}, \frac{b}{3})$. So $\bar{y} = \frac{b}{3}$.

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Nursing QUESTION #9278

Question 16

A 7-year-old child is screened for worm infestation. He complains of perianal itching at night. Microscopy of adhesive tape pressed against the perianal region at night reveals eggs. The MOST likely organism and treatment is:

Ascaris lumbricoides; albendazole 400 mg single dose
Enterobius vermicularis (pinworm); mebendazole 100 mg single dose, repeat after 2 weeks✔️
Trichuris trichiura; mebendazole 200 mg twice daily for 3 days
Strongyloides stercoralis; ivermectin single dose

Correct Answer Logic:

Enterobiasis (Pinworm/Threadworm) caused by Enterobius vermicularis — most common helminth infection in school-age children worldwide.

Key features:

Perianal/perineal pruritus at night (female migrates to perianal region at night to deposit eggs)
Restless sleep, irritability
Vaginal pruritus in girls (retrograde migration)
Diagnosis: Scotch tape/adhesive tape test — applied perianally early morning before bathing or defecation → microscopy reveals ova

Treatment:

Mebendazole 100 mg single dose OR Albendazole 400 mg single dose
Repeat dose after 2 weeks (kills hatched worms from eggs not affected by first dose)
Treat ALL household members simultaneously (highly contagious — fecal-oral + auto-inoculation)

Hygiene measures:

Short fingernails, frequent handwashing
Wash underwear/bedlinen in hot water
Avoid nail-biting

Albendazole dosing in helminths: $400\,\text{mg}$ single dose (Ascaris, hookworm, Enterobius); $400\,\text{mg}$ daily × 3 days (Trichuris)

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Mathematics QUESTION #4163

Question 17

For the system $3x_1 + 4x_2 - x_3 = 8$, $5x_1 + 3x_2 + 2x_3 = 17$, $-x_1 + x_2 - 3x_3 = -8$, what is the first iteration value of $x_1$ in Gauss-Seidel method starting with $(0,0,0)$?

$\frac{8}{3}$✔️
$\frac{17}{5}$
$\frac{8}{5}$
$8$

Correct Answer Logic:

From first equation: $x_1 = \frac{8 - 4x_2 + x_3}{3}$. With $x_2 = x_3 = 0$: $x_1 = \frac{8}{3} \approx 2.667$.

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MCQs Section QUESTION #4843

Question 18

Pick the word nearly opposite in meaning to "VALEDICTORY"

Farewell
Final
Hopeful✔️
Parting

Correct Answer Logic:

Valedictory means serving as a farewell or relating to departure. Its antonym is 'hopeful,' which conveys anticipation and expectation rather than departure or ending.

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Mathematics QUESTION #6928

Question 19

If $\displaystyle\int_0^{\pi/3}\dfrac{\tan\theta}{\sqrt{2k\sec\theta}}\,d\theta = 1-\dfrac{1}{\sqrt{2}}$ for $k>0$, find $k$.

4
$\dfrac{1}{2}$
1
2✔️

Correct Answer Logic:

$\displaystyle\int_0^{\pi/3}\dfrac{\tan\theta}{\sqrt{2k}\cdot\sqrt{\sec\theta}}\,d\theta = \dfrac{1}{\sqrt{2k}}\int_0^{\pi/3}\dfrac{\sin\theta}{\cos\theta}\cdot\sqrt{\cos\theta}\,d\theta=\dfrac{1}{\sqrt{2k}}\int_0^{\pi/3}\sin\theta\cdot(\cos\theta)^{-1/2}d\theta$

Let $u=\cos\theta$, $du=-\sin\theta\,d\theta$; limits: $1$ to $1/2$:

$=\dfrac{1}{\sqrt{2k}}\int_1^{1/2}(-u^{-1/2})du=\dfrac{1}{\sqrt{2k}}\left[2\sqrt{u}\right]_1^{1/2}... $ Wait: $\int_1^{1/2}(-u^{-1/2})du=\int_{1/2}^1 u^{-1/2}du=[2\sqrt{u}]_{1/2}^1=2-\sqrt{2}=2(1-1/\sqrt{2})$

$\dfrac{2(1-1/\sqrt{2})}{\sqrt{2k}}=1-\dfrac{1}{\sqrt{2}} \Rightarrow \dfrac{2}{\sqrt{2k}}=1 \Rightarrow \sqrt{2k}=2 \Rightarrow 2k=4 \Rightarrow k=\mathbf{2}$

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Boilers Mechanical Engineering QUESTION #4028

Question 20

'Pitting' is a form of localized corrosion that looks like:

Small holes or 'pits' in the metal surface✔️
A coat of paint
Long cracks
A layer of dust

Correct Answer Logic:

Usually caused by dissolved oxygen in the boiler water.

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