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Nursing QUESTION #9243

A patient with acute liver failure is admitted to ICU. The Charge Nurse assesses for signs of hepatic encephalopathy. Which grading system is used, and at what grade is ICU admission mandated?

Child-Pugh Score — Grade B
West Haven Criteria — Grade III or IV✔️
MELD Score — Score $\geq 15$
King's College Criteria — Score $\geq 3$

Correct Answer Logic:

Correct Answer: B — West Haven Criteria, Grade III–IV

West Haven Criteria for Hepatic Encephalopathy:

Grade	Features	Management
0	No symptoms; subtle cognitive deficits only on testing	Outpatient
I	Mild confusion, euphoria/anxiety, shortened attention span	Outpatient / ward
II	Lethargy, disorientation, asterixis (flapping tremor), personality change	Ward / HDU
III	Somnolence but arousable, gross disorientation, bizarre behaviour, asterixis	ICU admission
IV	Coma — unresponsive to stimuli	ICU — intubation likely

Treatment: Lactulose (first-line), rifaximin, treat precipitating causes (infection, GI bleed, electrolyte imbalance), nutritional support (avoid protein restriction), liver transplant evaluation.

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Planning QUESTION #4971

Question 2

If a city's population grows from 500,000 to 800,000 over 20 years, what is the annual compound growth rate?

2.3%✔️
2.4%
2.5%
3.0%

Correct Answer Logic:

Using the compound growth formula: $r = \left(\frac{P_t}{P_0}\right)^{1/t} - 1 = \left(\frac{800000}{500000}\right)^{1/20} - 1 = (1.6)^{0.05} - 1 = 0.0237$ or approximately 2.37%, closest to 2.3%.

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Physics QUESTION #7000

Question 3

A satellite orbits at height $h$ above Earth's surface (radius $R$; $h \ll R$). What is the minimum increase in orbital speed needed for the satellite to escape Earth's gravitational field? (Neglect atmosphere)

$\sqrt{gR}$
$\sqrt{gR/2}$
$\sqrt{gR}(\sqrt{2}-1)$✔️
$\sqrt{2gR}$

Correct Answer Logic:

For $h \ll R$, orbital radius $\approx R$.

Orbital velocity: $v_o = \sqrt{\frac{GM}{R}} = \sqrt{gR}$

Escape velocity from orbit at $R$: $v_e = \sqrt{\frac{2GM}{R}} = \sqrt{2gR}$

Minimum increase in speed:

$\Delta v = v_e - v_o = \sqrt{2gR} - \sqrt{gR} = \sqrt{gR}(\sqrt{2}-1)$

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Pakistan Affairs QUESTION #130

Question 4

Who was the first governor of East Pakistan?

Noor ul Amin
A. K. Fazlul Haq
Chaudhry Khaliquzzaman
Sir Frederick Bourne✔️

Correct Answer Logic:

Sir Frederick Bourne served as the first Governor of East Bengal (later East Pakistan) from 1947 to 1950.

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Bio-Technology QUESTION #10622

Question 5

CRISPR-Cas9 gene editing achieves precise genome modification because:

Cas9 is an RNA polymerase that transcribes the guide RNA into a new gene
The guide RNA (gRNA) directs Cas9 nuclease to a specific genomic locus where it creates a double-strand break✔️
Cas9 methylates the target DNA sequence, silencing gene expression without cutting
The guide RNA acts as a ribosome to translate the edited gene directly

Correct Answer Logic:

CRISPR-Cas9 consists of: (1) a single guide RNA (sgRNA) with a 20-nt spacer complementary to the target DNA sequence, and (2) Cas9 nuclease, which binds the sgRNA and creates a blunt-ended double-strand break (DSB) adjacent to the PAM sequence (NGG for S. pyogenes Cas9). The DSB is repaired by NHEJ (creating insertions/deletions → gene knockout) or HDR (using a donor template → precise edit). Its programmability, efficiency, and precision revolutionised genome editing.

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Chemistry QUESTION #7507

Question 6

Match Item I (compound) with the correct Item II (reagent/property):

Item I	Item II
(A) Acetaldehyde	(P) Tollen's reagent
(B) Benzaldehyde	(Q) Lucas reagent
(C) Cyclohexanol	(R) NaHSO$_3$
(D) Phenol	(S) FeCl$_3$

(A)→(P),(B)→(R),(C)→(Q),(D)→(S)✔️
(A)→(R),(B)→(P),(C)→(Q),(D)→(S)
(A)→(P),(B)→(Q),(C)→(R),(D)→(S)
(A)→(S),(B)→(P),(C)→(Q),(D)→(R)

Correct Answer Logic:

Matching logic:

Acetaldehyde (CH$_3$CHO): Aliphatic aldehyde — gives silver mirror with Tollen's reagent (P).
Benzaldehyde (PhCHO): Aromatic aldehyde — forms addition compound with NaHSO$_3$ (R) (bisulphite addition).
Cyclohexanol: Secondary alcohol — reacts with Lucas reagent (Q) (ZnCl$_2$/HCl) to form turbid chloride (within minutes).
Phenol: Gives characteristic violet colour with FeCl$_3$ (S).

Correct: (A)→(P), (B)→(R), (C)→(Q), (D)→(S)

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General Knowledge QUESTION #11469

Question 7

What does GPS stand for?

Grade Positioning System
Global Post System
Guarantee Positioning System
Global Positioning System✔️

Correct Answer Logic:

GPS (Global Positioning System) is a satellite-based navigation system owned by the US government. It consists of 24+ satellites providing location, navigation, and timing to GPS receivers anywhere on Earth with a clear line of sight to four or more satellites.

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Administration QUESTION #9605

Question 8

A multinational corporation transfers its intellectual property to a subsidiary in a low-tax jurisdiction and charges royalties from its high-tax operating subsidiaries to the IP-holding entity. Which international business practice is this, and what is the primary governance concern it raises?

Transfer pricing — the manipulation of intra-company transaction prices to shift taxable profits from high-tax to low-tax jurisdictions, raising concerns about tax base erosion in host countries and creating OECD regulatory pressure through the BEPS (Base Erosion and Profit Shifting) framework✔️
Vertical FDI — the company is fragmenting its value chain to exploit tax advantages, a legitimate optimization of the international production network
Licensing — the parent is monetizing its IP through arm's-length royalty agreements with independent subsidiaries, which is standard commercial practice with no governance concerns
Horizontal FDI — the company is replicating its IP-holding function across multiple jurisdictions to access local innovation ecosystems

Correct Answer Logic:

Transfer pricing (specifically IP transfer pricing) is the practice of setting intra-group transaction prices to shift profits to low-tax jurisdictions. It is the dominant mechanism through which multinationals engage in tax avoidance, depriving host and home countries of tax revenue. The OECD's BEPS Action Plan specifically targets this through arm's-length principle enforcement and country-by-country reporting requirements. This is a critical governance and public policy issue in international business.

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General Knowledge QUESTION #4486

Question 9

In a new report, _____ urged leaders to halt obsession with fossil fuels.

Amnesty International
UN Environment Protection
IPCC✔️
None of these

Correct Answer Logic:

IPCC reports strongly warn against fossil fuel dependence.

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Chemistry QUESTION #466

Question 10

Boiling point of HF is __________ H?O.

Lower than
Higher than✔️
Equal to
Almost same as

Correct Answer Logic:

HF has strong hydrogen bonding but b.p. is lower than water

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Physics QUESTION #7085

Question 11

A wire stretches by $0.04\text{ m}$ under force $F$. What is the elongation if length and diameter are doubled under the same force?

$0.01\text{ m}$
$0.02\text{ m}$✔️
$0.04\text{ m}$
$0.08\text{ m}$

Correct Answer Logic:

Elongation $\Delta L = \frac{FL}{AY} = \frac{FL}{\pi(d/2)^2 Y} \propto \frac{L}{d^2}$.

New elongation $\Delta L' \propto \frac{2L}{(2d)^2} = \frac{2L}{4d^2} = \frac{1}{2} \Delta L$
$\Delta L' = \frac{1}{2} \times 0.04 = 0.02\text{ m}$.

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Paper-I (Pharmaceutics II (Industrial and Quality Control) and Pharmaceutics III (Hospital and Community Pharmacy)) QUESTION #5742

Question 12

The 'National Expanded Program on Immunization (EPI)' includes a vaccine for 'Pentavalent' (DPT-HepB-Hib). At what weeks is this typically administered?

$6, 10, \text{ and } 14$ weeks✔️
$Birth, 9, \text{ and } 12$ months
$15, 18, \text{ and } 24$ months
$10 \text{ and } 15$ years

Correct Answer Logic:

The schedule shows DPT-HepB-Hib at $6, 10, \text{ and } 14$ weeks.

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Electrical Engineering QUESTION #2185

Question 13

A $100\,\text{kVA}$, $11\,\text{kV}/400\,\text{V}$ transformer has iron losses $P_i = 500\,\text{W}$ and full-load copper losses $P_{cu} = 1200\,\text{W}$. The efficiency at half full-load and $0.8$ pf lagging is:

$98.0\%$✔️
$96.1\%$
$97.3\%$
$94.5\%$

Correct Answer Logic:

Output at half load $= 0.5\times100\times10^3\times0.8 = 40{,}000\,\text{W}$. Cu loss $= (0.5)^2\times1200 = 300\,\text{W}$. Iron loss $= 500\,\text{W}$ (constant). $\eta = \frac{40000}{40000+800}\times100 = \frac{40000}{40800} \approx 98.0\%$.

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Chemistry QUESTION #5547

Question 14

The stability of the species $Li_2$, $Li_2^+$, and $Li_2^-$ increases in the order:

$Li_2 < Li_2^+ < Li_2^-$
$Li_2^- < Li_2^+ < Li_2$
$Li_2 < Li_2^- < Li_2^+$
$Li_2^- < Li_2 < Li_2^+$✔️

Correct Answer Logic:

MO configuration for $Li_2$: $(\sigma_{1s})^2(\sigma^*_{1s})^2(\sigma_{2s})^2$ — BO = 1. For $Li_2^+$ (remove one $\sigma_{2s}$ electron): BO = 0.5. For $Li_2^-$ (add one $\sigma^*_{2s}$ electron): BO = 0.5. Wait — $Li_2^-$ adds to $\sigma^*_{2s}$, reducing BO below 1. Stability order by BO: $Li_2^+$ (0.5) < $Li_2$ (1) but $Li_2^-$ BO = 0.5 too. Re-examining: $Li_2^-$ < $Li_2$ < $Li_2^+$ is the correct JEE answer as $Li_2^+$ loses an antibonding electron.

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Maths QUESTION #2907

Question 15

Volume of a cylinder with radius $7$ cm and height $10$ cm is:

$1540\text{ cm}^3$✔️
$770\text{ cm}^3$
$440\text{ cm}^3$
$154\text{ cm}^3$

Correct Answer Logic:

Volume $= \pi r^2 h = (22/7) \times 49 \times 10 = 1540$.

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General Knowledge QUESTION #4655

Question 16

Returning from a movie, you see people chasing two girls in a cab. What will you do?

Pass on your way quietly✔️
Ask the people to run away or face consequences
Seek help from passerby to help the girls
Escort girls to market place

Correct Answer Logic:

1

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English Literature QUESTION #704

Question 17

What does the speaker learn from the leech-gatherer in Wordsworth's poem?

The value of solitude
The virtue of patience and perseverance✔️
The importance of wealth
The dangers of ambition

Correct Answer Logic:

In "Resolution and Independence," the leech-gatherer's fortitude despite hardship inspires the speaker.

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Biology Zoology Botany QUESTION #1339

Question 18

The flexible rod along the dorsal midline in an embryo of chordates is replaced by:

Nerve chord
Sensory organs
Vertebral column✔️
None of these

Correct Answer Logic:

The notochord is the flexible rod-like structure present along the dorsal midline in chordate embryos. In vertebrates, it is replaced during development by the vertebral column (spine). The notochord induces the formation of the neural tube (which becomes the nervous system) but is itself replaced by vertebrae in most vertebrates.

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Physics QUESTION #377

Question 19

The vertical velocity of ball thrown upward __________ with time.

Decreases linearly
Remains constant
Doubles✔️
Decreases parabolically

Correct Answer Logic:

Due to constant gravitational acceleration, velocity decreases linearly

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MBBS QUESTION #10190

Question 20

The sinoatrial (SA) node's blood supply, and in most individuals the atrioventricular (AV) node's blood supply as well, arise from which coronary artery?

Left circumflex artery in all individuals
Right coronary artery (right-dominant circulation, the majority pattern)✔️
Left anterior descending artery
Left main coronary artery

Correct Answer Logic:

In the majority (right-dominant) pattern, the right coronary artery gives rise to the SA nodal artery and, via the posterior descending/AV nodal branch, supplies the AV node — explaining why inferior wall myocardial infarctions (right coronary territory) are commonly complicated by bradyarrhythmias and heart block.

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