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Physics QUESTION #1186

The De Broglie wave-particle duality is said to be the foundation of the uncertainty principle because:

The velocities of the particles were very high.
The mass could not attain the velocity of light.
The mass increases at velocities comparable to the velocity of light.
The uncertainty in position of the moving mass.✔️

Correct Answer Logic:

De Broglie's wave-particle duality implies that a particle has an associated wave. A particle's position is spread over the extent of its wave packet. To localize a particle precisely in position (small \(\Delta x\)), many wavelengths must be superposed, which spreads the momentum (\(\Delta p\)). This wave nature directly leads to Heisenberg's uncertainty principle: \(\Delta x \cdot \Delta p \geq \frac{\hbar}{2}\).

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3445

Question 4322

'Messenger RNA' (mRNA) carries the genetic code from:

Ribosome to Nucleus
Nucleus to Ribosome✔️
Mitochondria to Cell Wall
Protein to DNA

Correct Answer Logic:

It acts as a template for protein synthesis.

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Math Physics Chemistry Biology QUESTION #746

Question 4323

The force F experienced by a conductor of length L carrying current when placed in a uniform magnetic field B is:

F = B/iL
F = IL/B
F = BiL✔️
F = L x B/I

Correct Answer Logic:

The force on a current-carrying conductor in a magnetic field is F = BIL sinθ. For perpendicular field F = BiL.

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Civil Procedure QUESTION #3751

Question 4324

Which Amendment to the U.S. Constitution abolished slavery?

Twelfth.
Thirteenth.✔️
Fourteenth.
Fifteenth.

Correct Answer Logic:

The 13th Amendment (1865) abolished slavery and involuntary servitude, except as punishment for a crime.

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Administration QUESTION #9574

Question 4325

The 'Government of India Act 1935' introduced two significant provisions relevant to Pakistan's current administrative structure. What were these provisions, and how did they shape the post-independence civil service?

It introduced the provincial civil service and created the post of Governor General — both were retained after independence with minor modifications
It provided security of tenure for civil servants (no dismissal without hearing/right of appeal) and gave the provinces financial autonomy — establishing the principle of civil servant protection that was later codified in Pakistan's Civil Servants Act 1973✔️
It created the Federal Public Service Commission and the first competitive examination system for entry to the Indian Civil Service — the structural predecessor of Pakistan's FPSC
It established the first merit-based promotion system and abolished seniority-based advancement — a principle reversed by subsequent Pakistani governments

Correct Answer Logic:

The Government of India Act 1935 introduced two landmark protections: security of tenure (no dismissal without due process, including right of appeal up to Secretary of State) and provincial financial autonomy. The security of tenure principle became foundational to civil service independence in Pakistan — codified in the Civil Servants Act 1973 — while provincial financial autonomy laid conceptual groundwork for federalism and NFC-type resource-sharing mechanisms.

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General Knowledge QUESTION #8613

Question 4326

Captain Karnal Sher Khan, recipient of the Nishan-e-Haider, belonged to which regiment?

Punjab Regiment
Frontier Force Regiment
Sindh Regiment
Northern Light Infantry✔️

Correct Answer Logic:

He served in the Northern Light Infantry.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3499

Question 4327

'Resins' are usually formed in plants as:

Oxidation products of volatile oils✔️
Breakdown products of starch
Liquid proteins
Mineral deposits

Correct Answer Logic:

Resins are complex, solid or semi-solid amorphous products often associated with volatile oils.

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Chemistry QUESTION #7816

Question 4328

Which sub-shell does not exist?

1p✔️
1s
5d
6f

Correct Answer Logic:

For n=1, l can be 0 only (s orbital). 1p would require l=1, not possible. 1s exists; 5d and 6f exist for higher n.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3629

Question 4329

'Ayurveda' is the traditional system of medicine originating from:

Pakistan
India✔️
China
Egypt

Correct Answer Logic:

Ayurveda means 'The Science of Life' and is an ancient Indian system.

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Urdu QUESTION #5240

Question 4330

خوش تہ گام کی ترکیب کیا ہے؟

مبارک قدم✔️
مخصوص قدم
تیز قدم
سست قدم

Correct Answer Logic:

خوش تہ گام کا مطلب ہے مبارک قدم یعنی خوش قسمت قدم جس کا آنا بابرکت ہو۔

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Education QUESTION #6912

Question 4331

A parent-teacher partnership is described as effective when it includes 'needs assessment, goal statements, prioritization of activities, strategy development, implementation plans, and evaluation tools.' What does the inclusion of evaluation tools in this framework indicate about the nature of the partnership?

Evaluation tools ensure that teachers can formally grade parental involvement
The partnership is structured as an accountable, improvement-oriented process — not a one-time event — with built-in mechanisms to assess whether goals are being achieved✔️
Evaluation tools allow schools to report parent participation rates to regulatory bodies
Evaluation is included to assign responsibility in case of behavioral deterioration

Correct Answer Logic:

The inclusion of evaluation tools signals that parent-teacher partnerships should be treated with the same rigor as instructional programmes — as goal-directed, monitored, and reflective processes. This professionalizes the partnership beyond informal communication and creates shared accountability between home and school for student behavioral and academic outcomes.

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Boilers Mechanical Engineering QUESTION #2441

Question 4332

For forced undamped vibrations, the equation of motion \(m\ddot{x}+kx=F_0\sin pt\) has a particular solution (forced response amplitude) of:

\(X = \frac{F_0/k}{1-(p/\omega_n)^2}\) for \(p\neq\omega_n\)✔️
\(X = \frac{F_0}{k}\)
\(X = \frac{F_0}{k}\cdot\frac{p}{\omega_n}\)
\(X = \frac{F_0 k}{p^2}\)

Correct Answer Logic:

The particular solution amplitude is \(X=\frac{F_0/k}{1-(p/\omega_n)^2}=\frac{x_{st}}{1-(p/\omega_n)^2}\). As \(p\to\omega_n\), \(X\to\infty\) (resonance).

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3266

Question 4333

'Ketosis' occurs when the body primarily burns:

Sugar
Fats (producing ketone bodies)✔️
Proteins
Water

Correct Answer Logic:

Common in starvation or uncontrolled diabetes.

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HR and Management QUESTION #6437

Question 4334

The primary purpose of Human Resource Planning (HRP) is to:

Ensure the right number and types of people are available when needed✔️
Reduce overall headcount to minimize costs
Comply with equal employment opportunity laws
Develop training programs for current employees

Correct Answer Logic:

HRP ensures that organizations have the right number of people, with the right skills, in the right places, at the right times. It's a proactive process linking HR activities to organizational strategy and forecasting future needs.

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Mathematics QUESTION #1252

Question 4335

Let \(Q^+\) be the set of positive rationals with operation \(a * b = \dfrac{ab}{2}\). What is the identity element of \((Q^+, *)\)?

\(1\)
\(2\)✔️
\(\dfrac{1}{2}\)
\(0\)

Correct Answer Logic:

For identity \(e\): \(a * e = a \Rightarrow \dfrac{ae}{2} = a \Rightarrow e = 2\). Verify: \(a * 2 = \dfrac{2a}{2} = a\) ✓. So the identity element is \(2\).

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General Knowledge QUESTION #8750

Question 4336

Which city is considered the oldest continuously inhabited capital in the world?

Cairo
Damascus✔️
Athens
Tehran

Correct Answer Logic:

Damascus, Syria is often cited as the oldest continuously inhabited capital.

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Administration QUESTION #9563

Question 4337

The concept of 'span of control' and 'organizational levels' are inversely related. A government ministry decides to increase the span of control of its Joint Secretaries from 4 to 8 subordinates. What organizational consequence necessarily follows?

The organization becomes taller with more hierarchical levels to maintain effective supervision
The organization becomes flatter with fewer hierarchical levels, reducing communication layers but increasing supervisory load✔️
The organization requires more managers to maintain the same ratio of supervision across all levels
The organization shifts from functional to geographic departmentalization to manage the wider supervisory responsibility

Correct Answer Logic:

Span of control and organizational levels are inversely related: wider span = fewer levels (flatter structure); narrower span = more levels (taller structure). Increasing span from 4 to 8 means each manager supervises more people, reducing the need for additional management tiers — producing a flatter hierarchy with fewer intermediary levels.

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Accounting Finance and Punjab Sales Tax on Services QUESTION #2566

Question 4338

Under section 7(3), where the person providing the service and the recipient are ASSOCIATED PERSONS and the service is supplied for no consideration or lower consideration, the value of the service shall be:

The cost of providing the service
Open market price of the service
The price at which the service is provided to non-associated persons✔️
Zero, since no consideration is received

Correct Answer Logic:

Section 7(3) states that where parties are associated persons and the service is supplied for no consideration or lower consideration, the value shall be the price at which the service is provided to OTHER PERSONS WHO ARE NOT ASSOCIATED PERSONS.

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General Knowledge QUESTION #2626

Question 4339

DRIVERS in computing are:

Physical cables used to connect hard drives to the motherboard
Instructions that the CPU needs to understand and communicate with external devices like keyboards, webcams, and printers✔️
A type of cooling system used to regulate CPU temperature
The slots on a motherboard where RAM modules are inserted

Correct Answer Logic:

Drivers contain the instructions our CPU needs to understand external devices like keyboards, webcams, and printers. Without the correct driver installed, the computer cannot communicate properly with a connected peripheral device.

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Pakistan Affairs QUESTION #9055

Question 4340

The session of the Senate of Pakistan is presided over by:

The President
The Speaker of the National Assembly
The Chairman of the Senate✔️
None of these

Correct Answer Logic:

The Chairman of the Senate presides.

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