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Architecture QUESTION #2366

In the context of Green Building design, the Overall Thermal Transfer Value (OTTV) is a metric used to evaluate:

The amount of heat generated by building occupants and equipment per unit floor area
The total heat gain through the building envelope (walls, roofs, and fenestration) per unit area of the building facade, used to set energy performance benchmarks✔️
The coefficient of performance (COP) of the HVAC system
The total solar radiation incident on the building roof per year

Correct Answer Logic:

OTTV (Overall Thermal Transfer Value, in W/m²) is an energy code metric used in tropical and subtropical regions (including ECBC in Pakistan/India) that quantifies the total heat gain through the building envelope per unit external wall area. It accounts for conduction through opaque walls, solar radiation through windows (WWR, SHGC), and conductive heat through glazing. A lower OTTV indicates a more thermally efficient building envelope.

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Civil Engineering QUESTION #2120

Question 3762

The degree of static indeterminacy of a propped cantilever beam (fixed at one end, simply supported at other end, single span) is:

1✔️
2
3

Correct Answer Logic:

A propped cantilever has reactions: fixed end provides vertical reaction, horizontal reaction, and moment (3 unknowns); simple support provides vertical reaction (1 unknown) — total 4 unknowns. Available equilibrium equations: 3 ($\sum F_x = 0$, $\sum F_y = 0$, $\sum M = 0$). Degree of static indeterminacy $= 4 - 3 = 1$. One compatibility equation (typically zero deflection at the prop) is needed to solve it.

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Chemistry QUESTION #5545

Question 3763

In which of the following pairs of molecules/ions are BOTH species unlikely to exist?

$H_2^+,\ He_2^{2-}$
$H_2^-,\ He_2^{2-}$
$H_2^{2+},\ He_2$✔️
$H_2^-,\ He_2^{2+}$

Correct Answer Logic:

Bond order = $\frac{1}{2}(\text{bonding} - \text{antibonding electrons})$. $H_2^{2+}$: 0 electrons, BO = 0 → does not exist. $He_2$: 2 bonding + 2 antibonding, BO = 0 → does not exist. Therefore both $H_2^{2+}$ and $He_2$ cannot exist, making option C correct.

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Reading and Writing (Module-1) QUESTION #5406

Question 3764

Art collectives, like the United States- and Vietnam-based collective The Propeller Group or Cuba's Los Carpinteros, are groups of artists who agree to work together: perhaps for stylistic reasons, or to advance certain shared political ideals, or to help mitigate the costs of supplies and studio space. Regardless of the reasons, art collectives usually involve some collaboration among the artists. Based on a recent series of interviews with various art collectives, an arts journalist claims that this can be difficult for artists who are often used to having sole control over their work. Which quotation from the interviews best illustrates the journalist's claim?

The first collective I joined included many amazingly talented artists, and we enjoyed each other's company, but because we had a hard time sharing credit and responsibility for our work, the collective didn't last.✔️
We work together, but that doesn't mean that individual projects are equally the work of all of us. Many of our projects are primarily the responsibility of whoever originally proposed the work to the group.
Having worked as a member of a collective for several years, it's sometimes hard to recall what it was like to work alone without the collective's support. But that support encourages my individual expression rather than limits it.
Sometimes an artist from outside the collective will choose to collaborate with us on a project, but all of those projects fit within the larger themes of the work the collective does on its own.

Correct Answer Logic:

This quote directly illustrates the difficulty of sharing control by stating the collective didn't last because members had trouble sharing credit and responsibility.

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Electrical Engineering QUESTION #2144

Question 3765

What is the primary function of a Buchholz Relay in a transformer?

Protection against external short circuits
Protection against internal gas-producing faults✔️
Regulation of secondary voltage
Measurement of core temperature

Correct Answer Logic:

A Buchholz relay is a gas-actuated safety device installed to detect internal faults like insulation breakdown or overheating that produce gas within the oil.

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Contracts QUESTION #5841

Question 3766

A Merchant Buyer sends a purchase order for $1,000$ widgets. The Merchant Seller sends an acknowledgment including a new clause requiring binding arbitration. Does the clause become part of the contract?

Yes, between merchants all terms are automatically added.
No, because it is a material alteration.✔️
Yes, unless the Buyer objects within 48 hours.
No, because the 'Mirror Image Rule' prevents contract formation.

Correct Answer Logic:

Under UCC §2-207(2), additional terms that materially alter the agreement do not become part of the contract without express assent.

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Mechanical Engineering QUESTION #2460

Question 3767

For a simple gear train with gears 1, 2, and 3 in series (gear 2 is an idler), the overall velocity ratio $i_{13}$ between gear 1 (input) and gear 3 (output) is:

$i_{13} = -\frac{N_3}{N_1}$ (idler gear 2 only affects sign, not magnitude)✔️
$i_{13} = -\frac{N_2 N_3}{N_1^2}$
$i_{13} = \frac{N_1}{N_3}$
$i_{13} = \frac{N_1 N_2}{N_2 N_3}$

Correct Answer Logic:

For a simple gear train: $i_{13}=\left(-\frac{N_2}{N_1}\right)\left(-\frac{N_3}{N_2}\right)=-\frac{N_3}{N_1}$. The idler gear 2 cancels out in magnitude but reverses the direction sign once.

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Psychology QUESTION #1470

Question 3768

Which of the following is NOT a commonly used method for psychological assessment?

Medical imaging techniques✔️
Self-report questionnaires
Structured interviews
Projective tests

Correct Answer Logic:

Medical imaging techniques (such as CT scans, MRI, fMRI, PET scans) are primarily neurological and medical tools used to examine brain structure and function; they are NOT standard psychological assessment methods. Psychological assessment commonly uses self-report questionnaires (e.g., MMPI, BDI), structured/unstructured interviews, standardized cognitive tests, behavioural observations, and projective tests.

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5778

Question 3769

Which drug class is used for the 'eradication of worms'?

Antiviral
Antiprotozoal
Anthelmintic✔️
Antitubercular

Correct Answer Logic:

Anthelmintics are specifically used to treat helminth (worm) infections.

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English QUESTION #4425

Question 3770

The writer has unearthed serious irregularities in the entire project. The word 'unearthed' in this sentence means:

written
mentioned
exposed✔️
stated

Correct Answer Logic:

'Unearthed' literally means dug up from the ground. Figuratively, it means to discover or bring to light something hidden or unknown. 'Exposed' best captures this meaning — revealing hidden irregularities.

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Chemistry QUESTION #1073

Question 3771

Which of the following aqueous solutions will exhibit the highest boiling point?

$0.01\text{M}\ \text{Na}_2\text{SO}_4$✔️
$0.015\text{M}\ \text{C}_6\text{H}_{12}\text{O}_6$
$0.01\text{M}\ \text{Urea}$
$0.01\text{M}\ \text{KNO}_3$

Correct Answer Logic:

Boiling point elevation $\propto i \times m$ (van't Hoff factor $\times$ molality). Na$_2$SO$_4$: $i=3$, effective molality $=0.03$. Glucose: $i=1$, $=0.015$. Urea: $i=1$, $=0.01$. KNO$_3$: $i=2$, $=0.02$. Highest: $0.01\text{M}\ \text{Na}_2\text{SO}_4$ with effective particles $=0.03$.

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Accounting Finance and Punjab Sales Tax on Services QUESTION #2582

Question 3772

Under section 5(2) of the Act, a notification issued by the Government amending the Second Schedule (adding, modifying or deleting any entry regarding taxable services or rates) shall be effective from what date?

Three months before the date of notification
The date of approval by the Provincial Assembly
Such date as may be specified in the notification, but not prior to the date on which the notification is PUBLISHED in the Official Gazette✔️
The first day of the next financial year

Correct Answer Logic:

Section 5(2) provides a strict rule: the notification shall be effective from such date as may be specified therein, but SUCH DATE SHALL NOT BE PRIOR TO THE DATE ON WHICH THE NOTIFICATION IS PUBLISHED in the official Gazette — preventing retrospective taxation through subordinate legislation.

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Chemistry QUESTION #460

Question 3773

__________ is colorless volatile liquid at room temperature.

HCl
HF✔️
HI
HBr

Correct Answer Logic:

HF is colorless volatile liquid at room temperature

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Mechanical Engineering QUESTION #2510

Question 3774

For a state of plane stress $(\sigma_x, \sigma_y, \tau_{xy})$, the maximum in-plane shear stress is:

$\tau_{max} = \sqrt{\left(\frac{\sigma_x - \sigma_y}{2}\right)^2 + \tau_{xy}^2}$✔️
$\tau_{max} = \frac{\sigma_x + \sigma_y}{2}$
$\tau_{max} = \sigma_x - \sigma_y$
$\tau_{max} = \tau_{xy}$

Correct Answer Logic:

The maximum in-plane shear stress equals the radius of Mohr's circle: $\tau_{max}=\sqrt{\left(\frac{\sigma_x-\sigma_y}{2}\right)^2+\tau_{xy}^2}$.

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Chemistry QUESTION #1109

Question 3775

Higher yield of NO in $\text{N}_2(\text{g})+\text{O}_2(\text{g})\rightleftharpoons 2\text{NO}(\text{g})$, $\Delta H=+180.7\ \text{kJ mol}^{-1}$:

B, C, D only
A, C, D only✔️
A, D only
B, C only

Correct Answer Logic:

Reaction is endothermic ($\Delta H>0$). By Le Chatelier's principle: (A) Higher temperature shifts equilibrium forward (endothermic) → higher NO yield ✓. (B) Lower temperature shifts backward → less NO ✗. (C) Higher [N$_2$] shifts equilibrium forward → more NO ✓. (D) Higher [O$_2$] shifts equilibrium forward → more NO ✓. Correct: A, C, D = option (2).

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3100

Question 3776

Which blood vessel carries deoxygenated blood from the heart to the lungs?

Superior Vena Cava
Aorta
Pulmonary Artery✔️
Pulmonary Vein

Correct Answer Logic:

The pulmonary artery is the only artery that carries deoxygenated blood.

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Others section QUESTION #4702

Question 3777

Jabir ibn Hayyan was most renowned as which of the following?

Mathematician
Astronomer
Chemist✔️
Philosopher

Correct Answer Logic:

Jabir ibn Hayyan (c. 721–815 AD), also known as Geber, is widely regarded as the father of chemistry. While he was also an astronomer and philosopher, chemistry was his primary field of renown.

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Physics QUESTION #392

Question 3778

Practically __________ current flows in a reverse biased p-n junction.

No
Very large
Few milliamperes
Both A and C✔️

Correct Answer Logic:

Reverse bias allows only small leakage current

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Security Measures to Maintain Law and Order QUESTION #910

Question 3779

The "Permit System" for airport employees is a measure to maintain:

Financial records
Internal Law & Order✔️
Speed of work
Staff attendance

Correct Answer Logic:

By controlling who goes where (Access Control), the permit system prevents unauthorized internal interference.

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Agronomy QUESTION #2031

Question 3780

The most significant agronomic advantage of including a legume crop in a rotation sequence is:

It produces allelopathic compounds that suppress all subsequent weeds
It fixes atmospheric nitrogen through symbiosis with Rhizobium bacteria, reducing nitrogen fertilizer requirement for the subsequent crop✔️
It always produces higher economic yield than cereal crops
It prevents all fungal diseases in the subsequent cereal crop

Correct Answer Logic:

Legumes host Rhizobium or Bradyrhizobium bacteria in root nodules that fix atmospheric $N_2$ into plant-available $NH_4^+$. The residual nitrogen from legume roots and residues (typically 50–200 kg N/ha depending on species) benefits the following crop, reducing synthetic N fertilizer needs.

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