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Math Physics Chemistry Biology QUESTION #11421

Question 1941

Blood group which is known as a universal donor:

A
AB $^{ve}$
O $^{-ve}$✔️
B

Correct Answer Logic:

Blood group O negative (O$^{-ve}$) is the universal donor for red blood cells because: (1) type O red cells lack A and B surface antigens (no immune reaction from ABO mismatch), and (2) Rh negative cells lack the Rh(D) antigen (no Rh reaction). O$^{-ve}$ blood can be transfused to any recipient in emergencies.

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English Literature QUESTION #10744

Question 1942

Choose the grammatically correct sentence:

He was shocked when she told him who called her last night.✔️
He was shocked when she told him whom called her last night.
He was shocked when she told him what called her last night.
He was shocked when that she told him who called her last night.

Correct Answer Logic:

Option A is correct: 'He was shocked when she told him who called her last night.' Here 'who' is the subject of the embedded clause 'who called her last night' — the subject of 'called,' so the subject pronoun 'who' (not the object pronoun 'whom') is correct. Option B is wrong because 'whom' is an object pronoun but here it functions as subject. Option D incorrectly inserts 'that' before 'she.'

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3102

Question 1943

The average lifespan of a Red Blood Cell (Erythrocyte) is approximately:

10 days
30 days
120 days✔️
1 year

Correct Answer Logic:

RBCs circulate for about 120 days before being destroyed by the spleen and liver.

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Physics QUESTION #7051

Question 1944

A solid with a constant heat capacity of $1 \text{ J/}^\circ\text{C}$ is heated from $100^\circ\text{C}$ to $200^\circ\text{C}$ by placing it in contact with reservoirs. Case (i) uses 2 reservoirs and Case (ii) uses 8 reservoirs, each supplying equal amounts of heat. Determine the entropy change of the body in these two cases.

$\ln 2, 4\ln 2$
$\ln 2, \ln 2$✔️
$\ln 2, 2\ln 2$
$2\ln 2, 8\ln 2$

Correct Answer Logic:

Entropy is a state function, meaning its change depends only on the initial and final states of the system, not the path taken. Since the body starts at $100^\circ\text{C}$ and ends at $200^\circ\text{C}$ in both scenarios, the entropy change of the body is the same.

$\Delta S = \int \frac{dQ}{T} = \int_{T_i}^{T_f} \frac{C dT}{T} = C \ln\left(\frac{T_f}{T_i}\right)$

Assuming the options simplified the temperature ratio to $2$, the answer is $\ln 2, \ln 2$.

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Nursing QUESTION #9186

Question 1945

The concept of Health for All by 2000 was adopted at which international conference?

International Conference on Nursing Education, Geneva 1973
Alma-Ata Conference on Primary Health Care, USSR 1978✔️
Ottawa Charter for Health Promotion, Canada 1986
World Health Assembly, New York 1990

Correct Answer Logic:

The slogan Health for All by the Year 2000 was adopted at the International Conference on Primary Health Care, Alma-Ata, USSR (now Kazakhstan) in 1978. The Alma-Ata Declaration:

Declared health as a fundamental human right
Established Primary Health Care (PHC) as the key strategy
Called for community participation and intersectoral action
Set the goal of Health for All by 2000

Although the goal was not fully achieved by 2000, it led to the Millennium Development Goals (MDGs) and later the Sustainable Development Goals (SDGs 2015–2030). This is foundational knowledge for Charge/Head Nurse examinations in Pakistan.

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Law QUESTION #9707

Question 1946

Under Article 164 (as substituted by Act XXXVII of 2023), the Court may allow evidence recorded through modern devices including video conferencing:

Only in civil cases
Depending on the nature of case and circumstances, if the Court deems it appropriate✔️
Only for foreign witnesses
Only with consent of both parties

Correct Answer Logic:

Article 164 states the Court may, depending on the nature of case and circumstances, if deem appropriate, allow evidence recorded through modern devices or techniques including video call, skype, WhatsApp, video conference, etc.

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Administration QUESTION #2934

Question 1947

What does "Total Quality Management" (TQM) primarily emphasize in an organizational context?

Detecting and fixing errors only after production is finished
Fostering a culture of continuous improvement across all levels✔️
Minimizing costs by reducing the quality of raw materials
None of these

Correct Answer Logic:

TQM is a holistic approach that seeks to improve quality through the ongoing involvement of all employees and departments.

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Physics QUESTION #7225

Question 1948

What are the dimensions of the magnetic field $B$ in terms of $C$ (coulomb), $M$, $L$, and $T$?

$M^1L^1T^{-2}C$
$M^1L^0T^{-1}C^{-1}$✔️
$M^1L^0T^{-2}C$
$M^1L^1T^{-1}C$

Correct Answer Logic:

From the Lorentz force: $F = qvB$

$[B] = \dfrac{[F]}{[q][v]} = \dfrac{MLT^{-2}}{C \cdot LT^{-1}} = MT^{-1}C^{-1} = M^1L^0T^{-1}C^{-1}$

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Psychology QUESTION #9935

Question 1949

Faulty learning
Early childhood experiences
Unconscious unresolved conflicts
Faulty thinking✔️

Correct Answer Logic:

The cognitive model (Beck, Ellis) proposes abnormal behaviour results from faulty, distorted thinking patterns — cognitive errors such as overgeneralization and catastrophizing — that create emotional distress and dysfunction.

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Electrical Engineering QUESTION #2156

Question 1950

A three-phase 50 Hz star-connected synchronous generator has $X_s = 5\,\Omega$/phase (resistance negligible). It delivers rated current at 0.8 pf lagging with terminal voltage $V_t = 11\,\text{kV}$ (line). The excitation EMF $E_f$ per phase is approximately:

$7{,}351\,\text{V}$✔️
$6{,}350\,\text{V}$
$8{,}660\,\text{V}$
$9{,}100\,\text{V}$

Correct Answer Logic:

$V_{ph} = \frac{11000}{\sqrt{3}} \approx 6350\,\text{V}$. Using $E_f = \sqrt{(V\cos\phi)^2 + (V\sin\phi + IX_s)^2}$ with rated current and 0.8 lag pf gives $E_f \approx 7351\,\text{V}$.

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Planning QUESTION #4997

Question 1951

What does 'primate city' phenomenon indicate in urban systems?

Equal distribution of city sizes
Dominance of one disproportionately large city✔️
Multiple cities of similar size
Declining urban population

Correct Answer Logic:

A primate city is disproportionately larger (typically 2+ times) than the second-largest city, dominating the urban system economically and politically. Common in developing countries, it often indicates centralized development and regional imbalances.

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Journalism / Mass Communication QUESTION #6417

Question 1952

The first wide-coverage telex network was implemented in which country and for what primary purpose?

United States, for commercial business communication in 1945
Germany, in the 1930s, used primarily for government communication — allowing up to 25 telex channels to share a single long-distance telephone line at 45.5 bits per second✔️
Britain, in the 1920s, for military communication during World War I
Japan, in the 1950s, for international business communication

Correct Answer Logic:

The telex system represented an important intermediate stage between the telegraph and modern digital data communication. According to the textbook:

Telex machines first appeared as an evolution of telegraph technology, using telephone-like rotary dialing to connect teleprinters (teletypes)
By 1935, message routing was the last barrier to full automation of the system
The first wide-coverage telex network was implemented in Germany in the 1930s, used primarily for government communication
Technical specifications: 45.5 bits per second; up to 25 telex channels could share a single long-distance telephone channel
This made telex the least expensive method of reliable long-distance communication at the time

Telex eventually became a global business standard for transmitting documents internationally, particularly important for news agencies (like Reuters) and international trade, before being superseded by fax and then email in the late 20th century.

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Chemistry QUESTION #7353

Question 1953

Which of the following sets of quantum numbers represents an arrangement that is NOT allowed for an electron in an atom?

$n=3,\ \ell=2,\ m=-2,\ s=-\frac{1}{2}$
$n=4,\ \ell=0,\ m=0,\ s=-\frac{1}{2}$
$n=5,\ \ell=3,\ m=0,\ s=+\frac{1}{2}$
$n=3,\ \ell=2,\ m=-3,\ s=-\frac{1}{2}$✔️

Correct Answer Logic:

Rules for valid quantum numbers:

$n \geq 1$
$0 \leq \ell \leq n-1$
$-\ell \leq m \leq +\ell$

In option (4): $n=3, \ell=2$, so $m$ can range from $-2$ to $+2$. But $m = -3$ is outside this range, making it an invalid set. All other options satisfy the rules.

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English QUESTION #8570

Question 1954

What does the idiom 'to fish in troubled waters' mean?

catch fish in flood waters
to dive in deep waters
to go for a daunting task
to make personal profit from a disturbance✔️

Correct Answer Logic:

'Fish in troubled waters' means to exploit a disturbed situation for personal gain.

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Physics QUESTION #7860

Question 1955

Nurse pushing wheelchair: work done by patient's weight:

Half
Max
Min
Zero✔️

Correct Answer Logic:

Weight acts vertically, displacement horizontal → θ=90°, cos90=0 → W=0.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #2977

Question 1956

Which book is considered the 'Official Gazette' of pharmacy standards in the United States?

USP-NF✔️
BP
International Pharmacopoeia
Merck Index

Correct Answer Logic:

The United States Pharmacopeia and the National Formulary (USP-NF) are the official compendia of drug standards in the USA.

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Math Physics Chemistry Biology QUESTION #11298

Question 1957

Which cells are primarily targeted and destroyed by the HIV virus?

B lymphocytes
Helper T cells (CD4$^+$ T cells)✔️
Cytotoxic T cells
Natural killer cells

Correct Answer Logic:

HIV (Human Immunodeficiency Virus) specifically targets and destroys helper T cells (CD4$^+$ T lymphocytes) by binding to the CD4 receptor. This cripples the immune system, leading to AIDS (Acquired Immunodeficiency Syndrome).

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