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Electrical Engineering QUESTION #2147

Which Maxwell’s equation was modified by Maxwell himself to include the displacement current term $\frac{\partial \mathbf{D}}{\partial t}$?

Gauss's Law for Electricity
Gauss's Law for Magnetism
Faraday's Law of Induction
Ampere’s Circuital Law✔️

Correct Answer Logic:

Maxwell added $\frac{\partial \mathbf{D}}{\partial t}$ to Ampere's Law ($\nabla \times \mathbf{H} = \mathbf{J} + \frac{\partial \mathbf{D}}{\partial t}$) to satisfy the continuity equation for time-varying fields.

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Therapeutics and Patient Care QUESTION #3875

Question 1102

What is the first-line pharmacological treatment for a confirmed infestation with \textit{Sarcoptes scabiei}?

Permethrin✔️
Mebendazole
Malathion
Tinidazole

Correct Answer Logic:

Topical permethrin $5\%$ cream is the first-line treatment for scabies, applied to all body surfaces from neck down and washed off after $8$–$14$ hours.

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Education QUESTION #6779

Question 1103

A teacher includes the following stem in a test: 'Photosynthesis is the process by which: a) plants absorb water from soil; b) plants produce food using sunlight; c) plants release oxygen at night; d) plants absorb carbon dioxide for cellular respiration.' Upon analysis, option (b) contains a keyword ('food') that also appears in the course definition students memorized. Which MCQ construction flaw does this represent?

Including a distractor that is too difficult
Verbal association between the stem/correct answer and the course definition — the word 'food' provides an irrelevant linguistic clue to the answer without requiring genuine understanding✔️
The stem is stated as an incomplete sentence, which is a poor format
All options are grammatically inconsistent with the stem

Correct Answer Logic:

Suggestion 7 in MCQ construction warns against verbal associations between the stem or correct answer and memorized material. When a keyword in the answer mirrors a specific phrase from the definition, students can identify the correct option through rote linguistic matching rather than conceptual understanding. This undermines the item's validity as a measure of comprehension.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3610

Question 1104

'Agar' is a mucilaginous substance obtained from:

Land plants
Seaweeds (Red Algae)✔️
Animal bones
Fungi

Correct Answer Logic:

Agar is derived from Gelidium and Gracilaria species.

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General Abilities QUESTION #7997

Question 1105

$0.03 \times 10 = ?$

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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Electrical Engineering QUESTION #2145

Question 1106

A system is described by the transfer function $H(s) = \frac{10}{s^2 + 2s + 10}$. What is the natural frequency $\omega_n$ of this system?

$10\text{ rad/s}$
$\sqrt{10}\text{ rad/s}$✔️
$2\text{ rad/s}$
$5\text{ rad/s}$

Correct Answer Logic:

Comparing with the standard form $\frac{\omega_n^2}{s^2 + 2\zeta\omega_n s + \omega_n^2}$, we see $\omega_n^2 = 10$, so $\omega_n = \sqrt{10}\text{ rad/s}$.

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Boilers Mechanical Engineering QUESTION #2549

Question 1107

A couple acting on a rigid body is classified as which type of vector?

Bound vector — must act at a specific point
Sliding vector — must act along its line of action
Free vector — can be placed anywhere without changing its effect✔️
Fixed vector — its point of application is immovable

Correct Answer Logic:

A couple is a free vector because its effect on a rigid body (pure rotation) is the same regardless of where the couple is applied. This contrasts with a force (sliding vector) whose line of action matters.

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Physics QUESTION #398

Question 1108

The acceleration is proportional to the displacement and is directed towards mean position in __________ motion.

Gravity
Simple harmonic✔️
Uniform
Projectile

Correct Answer Logic:

This defines simple harmonic motion

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Tourism & Hospitality Management QUESTION #1609

Question 1109

The Front Office Operations course covers the 'Property Management System (PMS).' Which of the following best describes its function in hotel operations?

A physical blueprint used for hotel construction and renovation planning
An integrated computer-based system that manages guest reservations, check-in/out, room assignments, billing, night audit, and interfaces with other hotel departments✔️
A manual ledger system for recording guest payments
A marketing database for tracking customer preferences

Correct Answer Logic:

The PMS (Property Management System) is covered extensively in Module 7 of the Front Office Operations course. It is a centralized hotel management software that integrates guest registration, room management, billing, the night audit function, and interfaces with other systems (POS, reservation systems, housekeeping status) — replacing manual front office procedures.

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Pakistan Affairs QUESTION #4673

Question 1110

The Iran-Pakistan-India gas pipeline project is also commonly referred to as which of the following?

Friendly Pipeline
Peace Pipeline✔️
Great Pipeline
Asian Pipeline

Correct Answer Logic:

The Iran-Pakistan-India gas pipeline is known as the 'Peace Pipeline' as it was conceived as a project that would promote peace and economic cooperation among the three nations.

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Physics QUESTION #7071

Question 1111

Two Carnot engines, A and B, operate in series. Engine A receives heat at $T_1 = 600 \text{ K}$ and rejects it to a reservoir at $T_2$. Engine B receives this rejected heat and rejects it to a sink at $T_3 = 400 \text{ K}$. If both engines produce the same amount of work, find $T_2$.

$600 \text{ K}$
$400 \text{ K}$
$300 \text{ K}$
$500 \text{ K}$✔️

Correct Answer Logic:

For two Carnot engines in series where the work output is equal ($W_A = W_B$):

$Q_1 - Q_2 = Q_2 - Q_3$

Since $Q \propto T$ for a Carnot cycle, we can write:
$T_1 - T_2 = T_2 - T_3$

Rearranging for $T_2$:
$2T_2 = T_1 + T_3 \implies T_2 = \frac{600 + 400}{2} = 500 \text{ K}$.

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Islamic Studies QUESTION #364

Question 1112

"Reconstruction of Religious Thought in Islam" was written by:

T.W. Arnold
Ameer Ali
Dr. Muhammad Iqbal✔️
None of these

Correct Answer Logic:

This book is a compilation of lectures delivered by Allama Muhammad Iqbal.

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English QUESTION #2769

Question 1113

What does the idiom 'SPILL THE BEANS' mean? (Note: An idiom is a phrase with a figurative meaning different from its literal meaning)

To cook a meal
To make a mess
To reveal a secret✔️
To waste food

Correct Answer Logic:

'Spill the beans' is an idiom meaning to reveal secret or confidential information, usually by accident. Example: 'Don't spill the beans about the surprise party!'

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Biology QUESTION #7236

Question 1114

Which of the following features distinguishes conifers from grasses?

Absence of pollen tubes
Formation of endosperm before fertilization✔️
Production of seeds from ovules
Lack of xylem tracheids

Correct Answer Logic:

Conifers (gymnosperms) form endosperm before fertilization — this pre-fertilization endosperm (the female gametophyte tissue) is a key gymnosperm feature. In angiosperms (grasses), endosperm forms after fertilization (triple fusion). Both groups have pollen tubes, xylem tracheids, and seeds from ovules.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3022

Question 1115

Suppositories are intended for insertion into:

Rectum
Vagina
Urethra
All of these✔️

Correct Answer Logic:

Suppositories (and pessaries/bougies) are inserted into various body orifices.

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General Abilities QUESTION #4497

Question 1116

What is $(-3)^4$?

$-81$
$81$✔️
$-12$
$12$

Correct Answer Logic:

$(-3)^4 = (-3) \times (-3) \times (-3) \times (-3) = 81$. Negative to even power is positive.

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Civil Engineering QUESTION #6573

Question 1117

Minor losses in pipe flow are those that are:

Small in absolute magnitude
Caused by local disturbances due to fittings such as valves, bends, and contractions✔️
Caused purely by pipe wall friction
Dependent only on the length of the pipeline

Correct Answer Logic:

Minor losses arise from local flow disturbances at fittings, bends, valves, and expansions. They are expressed as $h_L = K\frac{V^2}{2g}$, where $K$ is a loss coefficient specific to each fitting.

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Physics QUESTION #377

Question 1118

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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Biology QUESTION #4231

Question 1119

CFTR gene that encode a protein which regulate:

Protein and salt
Salt and Water✔️
Sugar and Water
Liquid and Protein

Correct Answer Logic:

CFTR regulates salt and water transport.

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Ability / HR / Governance / Special Education QUESTION #1795

Question 1120

According to Rule 19(1)(c), a bidder who fails to abide by a bid securing declaration — but without involvement in corrupt or fraudulent practices — shall be blacklisted and cross debarred for a maximum period of:

Six months✔️
One year
Two years
Three years

Correct Answer Logic:

Rule 19(1)(c) prescribes that a bidder who fails to honor a bid securing declaration, but is not found guilty of corrupt or fraudulent practices, shall be blacklisted and cross debarred for a period not exceeding six months.

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