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Electronics Engineering QUESTION #11731

A logic analyser is more appropriate than an oscilloscope for debugging an SPI bus because:

A logic analyser has higher bandwidth
A logic analyser can decode protocol-level data (bytes, addresses, commands) simultaneously on multiple channels✔️
A logic analyser has better voltage accuracy
An oscilloscope cannot trigger on digital signals

Correct Answer Logic:

A logic analyser captures and displays many digital channels simultaneously and can decode serial protocols (SPI, I²C, UART, CAN) into human-readable data — showing byte values, addresses, and command fields with timestamps. An oscilloscope shows analogue waveforms on 2–4 channels; ideal for signal integrity but impractical for multi-channel protocol debugging.

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Therapeutics and Patient Care QUESTION #3904

Question 2

Which ophthalmic medication causes miosis (pupil constriction) and promotes focusing for near vision when instilled into the eye?

Atropine
Timolol
Pilocarpine✔️
Cyclopentolate

Correct Answer Logic:

Pilocarpine is a direct-acting muscarinic agonist that stimulates the sphincter pupillae (miosis) and ciliary muscle contraction (accommodation) when applied topically to the eye.

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Chemistry QUESTION #7147

Question 3

Among the following alkaline earth metal sulfates, which one possesses a hydration enthalpy that is greater than its lattice enthalpy?

$CaSO_{4}$
$BeSO_{4}$✔️
$BaSO_{4}$
$SrSO_{4}$

Correct Answer Logic:

Solubility of sulfates depends on the balance between lattice energy and hydration energy. As we move down the group, both decrease, but lattice energy decreases slowly due to the large size of the sulfate ion. However, $Be^{2+}$ is exceptionally small, giving it a very high hydration enthalpy that exceeds its lattice enthalpy, making $BeSO_{4}$ highly soluble.

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Law QUESTION #9482

Question 4

A files a suit for rent against B. While the suit is pending, A obtains an interim injunction restraining B from transferring the tenanted property. It is later proved that A obtained the injunction on deliberately suppressed and false facts. B claims compensation. Can B obtain compensation within the same proceedings?

No; only the High Court can award such compensation
Yes; B may apply under Section 95 CPC in the same suit for compensation for having obtained the injunction on insufficient grounds, without needing a separate suit✔️
No; B must file a separate suit for compensation
Yes; but only after the injunction is vacated

Correct Answer Logic:

Section 95 CPC provides that where an arrest, attachment, or injunction is obtained on insufficient grounds, the Court in the same suit may award reasonable compensation to the defendant on his application. A separate suit is not required.

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General Knowledge QUESTION #11571

Question 5

In Microsoft PowerPoint, what defines a 'Motion Path'?

A type of entrance animation effect
A method for advancing slide sequences
A predefined track along which an object moves across a slide✔️
All of the above

Correct Answer Logic:

A Motion Path in PowerPoint is an animation effect that moves an object along a defined path across the slide. The object travels from a starting point to an ending point following the specified path (lines, curves, shapes, or custom drawn). Motion Paths are in Custom Animation → Add Effect → Motion Paths.

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Information Technology QUESTION #1129

Question 6

Which technique works by selecting the local optimal choice at each step?

Dynamic Programming
Divide and Conquer
Greedy Algorithm✔️
None of these

Correct Answer Logic:

A Greedy Algorithm makes the choice that looks best at the current moment with the hope that these local optimal choices will lead to a global optimum.

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MCQs Section QUESTION #5116

Question 7

انتظار حسین کا کون سا افسانہ ہے جس میں تصوف کو بنیاد بنایا گیا؟

زرو کتا
کایا پلٹ✔️
اکڑی
آخری آدمی

Correct Answer Logic:

کایا پلٹ انتظار حسین کا افسانہ ہے جس میں تصوف کے تصورات کو مرکزی حیثیت دی گئی ہے۔

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Chemistry QUESTION #7405

Question 8

The correct decreasing order of ionic radii among the following isoelectronic species is:

$\text{K}^+ > \text{Ca}^{2+} > \text{Cl}^- > \text{S}^{2-}$
$\text{Ca}^{2+} > \text{K}^+ > \text{S}^{2-} > \text{Cl}^-$
$\text{Cl}^- > \text{S}^{2-} > \text{Ca}^{2+} > \text{K}^+$
$\text{S}^{2-} > \text{Cl}^- > \text{K}^+ > \text{Ca}^{2+}$✔️

Correct Answer Logic:

All are isoelectronic (18 electrons). Decreasing size = increasing nuclear charge:

$\text{S}^{2-}$: Z=16 → largest
$\text{Cl}^-$: Z=17
$\text{K}^+$: Z=19
$\text{Ca}^{2+}$: Z=20 → smallest

Decreasing order: $\text{S}^{2-} > \text{Cl}^- > \text{K}^+ > \text{Ca}^{2+}$

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Chemistry QUESTION #1441

Question 9

In IR spectroscopy, the fingerprint region is found in the range:

4000–2500 cm$^{-1}$
2500–1500 cm$^{-1}$
1500–600 cm$^{-1}$✔️
None of these

Correct Answer Logic:

The fingerprint region in IR spectroscopy is the range from approximately 1500 to 600 cm$^{-1}$. This region contains complex, overlapping absorption bands arising from C–O, C–N, C–X stretching and various bending vibrations that are unique to each molecule — like a molecular fingerprint. The region 4000–2500 cm$^{-1}$ is the functional group region (X–H stretches).

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MCQs Section QUESTION #4873

Question 10

Correct antonym of "COVENANT" is

Prayer
Debate✔️
Garden
Agreement

Correct Answer Logic:

A covenant is a formal, solemn agreement or contract. Its antonym here is 'debate,' implying disagreement or dispute rather than a settled agreement.

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Disaster Management QUESTION #6528

Question 11

What is the fundamental flaw in disaster recovery that only focuses on 'building back'?

It takes too long
It fails to address underlying vulnerabilities and may recreate pre-disaster risks✔️
It costs more than resilient reconstruction
It requires international assistance

Correct Answer Logic:

Section 10 emphasizes the 'Build Back Better' principle, which integrates risk reduction into reconstruction. Simply rebuilding to previous standards recreates vulnerabilities, whereas resilient reconstruction addresses root causes, incorporates hazard-resistant designs, and reduces future risks.

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Education QUESTION #7596

Question 12

In which teaching method are learners encouraged to reflect on their experiences to evaluate understanding and build deeper conceptual knowledge?

Perennialism
Constructivism✔️
Realism
None of these

Correct Answer Logic:

Constructivist teaching methods emphasize reflective practice, where students examine their experiences to build deeper understanding and construct new knowledge.

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Maths QUESTION #2909

Question 13

Total surface area of a cube with side $3$ cm is:

$18\text{ cm}^2$
$27\text{ cm}^2$
$54\text{ cm}^2$✔️
$36\text{ cm}^2$

Correct Answer Logic:

Surface Area $= 6s^2 = 6 \times 3^2 = 6 \times 9 = 54$.

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Accounting & Finance QUESTION #1195

Question 14

Accounting information is said to be relevant when it:

Is free from material error.
Influences the decision-making of users.✔️
Can be compared across entities.
Is supported by evidence from independent sources.

Correct Answer Logic:

Relevance is a fundamental qualitative characteristic of useful financial information (per IASB Conceptual Framework). Information is relevant if it is capable of making a difference in the decisions made by users — it has predictive value, confirmatory value, or both. Being free from error refers to faithful representation, not relevance.

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Math Physics Chemistry Biology QUESTION #7763

Question 15

Which statement about plasmids in streptococci is NOT true?

Carry fewer genes than chromosome
Replicate autonomously
They are genetic elements
The bacterial chromosome depends on plasmids for replication✔️

Correct Answer Logic:

Plasmids are extrachromosomal DNA elements that replicate independently; the chromosome does not depend on them. They carry non-essential genes (e.g., antibiotic resistance).

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Physics QUESTION #415

Question 16

A certain radioactive mass decays from 64 gm to 2 gm in 20 days. What is its half-life?

5 days
4 days✔️
10 days
6 days

Correct Answer Logic:

64?32?16?8?4?2 is 5 half-lives in 20 days, so t?/? = 4 days

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Boilers Mechanical Engineering QUESTION #2392

Question 17

The final value theorem, used to find the steady-state output $x_o(\infty)$ from the Laplace transform $X_o(s)$, states:

$x_o(\infty) = \lim_{s\to\infty} s X_o(s)$
$x_o(\infty) = \lim_{s\to 0} s X_o(s)$✔️
$x_o(\infty) = \lim_{s\to 0} X_o(s)$
$x_o(\infty) = \lim_{s\to\infty} X_o(s)$

Correct Answer Logic:

Final value theorem: $x_o(\infty)=\lim_{t\to\infty}x_o(t)=\lim_{s\to0}sX_o(s)$. Valid when all poles of $sX_o(s)$ are in the left-half s-plane. Used to find steady-state error without inverting the Laplace transform.

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Nursing QUESTION #9278

Question 18

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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Dairy Food Science and Technology QUESTION #5891

Question 19

The water activity $(a_w)$ of whole milk powder is maintained below which value to ensure microbiological safety and prevent caking?

$a_w = 0.95$
$a_w = 0.85$
$a_w = 0.60$✔️
$a_w = 0.30$

Correct Answer Logic:

Whole milk powder should have $a_w < 0.60$ (typically $0.1\text{–}0.3$) to prevent microbial growth (most bacteria require $a_w > 0.90$) and enzymatic reactions. Moisture content is kept below $3\text{–}4\%$.

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Education QUESTION #6892

Question 20

A teacher instructs students that when they finish work early, they should refer to a classroom chart of extension activities. According to classroom management principles, what specific management problem does this strategy MOST directly prevent?

Students finishing early from copying peers' work
Unstructured 'free time' that creates behavioral disruption during natural lesson gaps✔️
Students becoming overloaded with work beyond their cognitive level
Inequity in the distribution of academic tasks across ability levels

Correct Answer Logic:

When students finish early and have nothing structured to do, they fill that 'free time' with self-chosen — often disruptive — behavior. Providing extension activity charts ensures that every student has a purposeful, curriculum-connected task at all times, preventing the behavioral vacuum that unstructured time creates.

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