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Physics QUESTION #7022
Question 1
According to the kinetic theory of gases, why do gas molecules exert pressure on the walls of their container?
  • They undergo a change in momentum when hitting the walls.βœ”οΈ
  • They continuously stick to the walls.
  • They lose energy until they reach the wall.
  • They are attracted by the forces of the walls.
Correct Answer Logic:
Pressure is defined as force per unit area. Force is the rate of change of momentum. When molecules collide elastically with the walls, their direction changes, resulting in a change in momentum which exerts a force on the wall.
Uploaded by: Fani Warraich
Accounting & Finance QUESTION #6137
Question 2

At 31 December: Balance per bank statement $22,650; Uncleared deposits $3,110; Unpresented cheques $6,290; Bank credit recorded twice by bank in error $650. What is the cash book balance for the statement of financial position?
  • $18,820βœ”οΈ
  • $20,120
  • $25,180
  • $26,480
Correct Answer Logic:

Option A ($18,820) is correct.

Bank statement balance: $22,650

+ Uncleared deposits: +$3,110

− Unpresented cheques: −$6,290

− Bank error (overstated credit): −$650

Cash book balance = $18,820

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MCQs Section QUESTION #5182
Question 3
وہ فعل Ψ¬Ψ³ Ω…ΫŒΪΊ Ω…ΩˆΨ¬ΩˆΨ― Ψ²Ω…Ψ§Ω†Ϋ’ Ϊ©Ϋ’ Ω…ΨͺΨΉΩ„Ω‚ Ψ¨Ψͺایا Ψ¬Ψ§Ψ¦Ϋ’ اور ؒئندہ Ω…Ψ³ΨͺΩ‚Ψ¨Ω„ Ϊ©Ψ§ ΫΩˆΩ†Ψ§ Ω…ΨΉΩ„ΩˆΩ… ہو، کیا کہلاΨͺΨ§ ΫΫ’ΨŸ
  • فعلِ Ω…Ψ§ΨΆΫŒ
  • فعلِ Ω…ΨΆΨ§Ψ±ΨΉβœ”οΈ
  • فعلِ Ψ­Ψ§Ω„
  • فعلِ Ψ§Ω…Ψ±
Correct Answer Logic:
فعلِ Ω…ΨΆΨ§Ψ±ΨΉ وہ فعل ہے Ψ¬Ψ³ Ω…ΫŒΪΊ Ψ­Ψ§Ω„ اور Ω…Ψ³ΨͺΩ‚Ψ¨Ω„ Ψ―ΩˆΩ†ΩˆΪΊ Ϊ©Ϋ’ Ω…ΨΉΩ†ΫŒ Ω†Ϊ©Ω„ΨͺΫ’ ΫΩˆΪΊΫ”
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Security Measures to Maintain Law and Order QUESTION #833
Question 4
Under Section 6, which measure is primary for maintaining law and order regarding "unsavory elements"?
  • Summary Eviction
  • Compulsory Detention
  • Restricted Entry & Searchβœ”οΈ
  • Surveillance only
Correct Answer Logic:
Per Section 6, the Force is mandated to search and even exclude persons not meant to be in the aerodrome to maintain order.
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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3252
Question 5
'Dead Space' in the respiratory system refers to:
  • The area where gas exchange occurs
  • The air in the conducting zone (trachea/bronchi) that doesn't reach alveoliβœ”οΈ
  • The volume of a collapsed lung
  • The area behind the nose
Correct Answer Logic:
This air is breathed in but never participates in gas exchange.
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Chemistry QUESTION #7822
Question 6

Which molecule has zero dipole moment?
  • BFβ‚ƒβœ”οΈ
  • NF₃
  • NH₃
  • Hβ‚‚O
Correct Answer Logic:

BF₃ is trigonal planar with symmetric bond dipoles canceling (net ΞΌ=0). NF₃, NH₃, Hβ‚‚O are polar.

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MCQs Section QUESTION #4909
Question 7
A prolific architect who worked from the turn of the century until the late 1950's, _____ perhaps most notably William Randolph Hearst's monumental estate at San Simeon.
  • Julia Morgan designed nearly 800 buildings in Californiaβœ”οΈ
  • perhaps the most notable of the nearly 800 buildings in California designed by Julia Morgan was William Randolph Hearst's monumental estate at San Simeon
  • of the nearly 800 buildings in California designed by Julia Morgan, perhaps the most notable was William Randolph Hearst's monumental estate at San Simeon
  • nearly 800 buildings in California were designed by Julia Morgan, of which William Randolph Hearst's monumental estate at San Simeon is perhaps the most notable
Correct Answer Logic:
The introductory participial phrase 'A prolific architect…' must be followed by Julia Morgan as the grammatical subject to avoid a dangling modifier. Only option A does this. Options B, C, and D all shift the subject away from Julia Morgan, creating dangling modifiers.
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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3030
Question 8
Glycero-gelatin bases are commonly used for:
  • Rectal suppositories
  • Vaginal pessaries
  • Urethral bougies
  • Both B and Cβœ”οΈ
Correct Answer Logic:
Gelatin-based suppositories are common for vaginal and urethral use.
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MCQs Section QUESTION #5276
Question 9
Ψ§ΫŒΩ† Ψ§ΫŒΩ… Ψ±Ψ§Ψ΄Ψ― Ϊ©Ψ§ Ψ§Ψ΅Ω„ Ω†Ψ§Ω… کیا Ψͺھا؟
  • Ω†ΩˆΨ± Ω…Ψ­Ω…Ψ― Ψ±Ψ§Ψ΄Ψ―
  • Ω†ΨΈΨ± Ω…Ψ­Ω…Ψ― Ψ±Ψ§Ψ΄Ψ―βœ”οΈ
  • Ω†Ψ°ΫŒΨ± Ω…Ψ³ΨΉΩˆΨ― Ψ±Ψ§Ψ΄Ψ―
  • Ω†ΩˆΨ± Ω…Ψ³ΨΉΩˆΨ― Ψ±Ψ§Ψ΄Ψ―
Correct Answer Logic:
Ψ§ΫŒΩ† Ψ§ΫŒΩ… Ψ±Ψ§Ψ΄Ψ― Ϊ©Ψ§ Ψ§Ψ΅Ω„ Ω†Ψ§Ω… Ω†ΨΈΨ± Ω…Ψ­Ω…Ψ― Ψ±Ψ§Ψ΄Ψ― ہے (Ψ’ΩΎΨ΄Ω† 1 ΩΎΨ± Ω†ΨΈΨ± Ω…Ψ­Ω…Ψ― Ψ±Ψ§Ψ΄Ψ― ہے)Ϋ”
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English QUESTION #8543
Question 10
They learned to cook _______ their mothers.
  • by
  • with
  • through
  • fromβœ”οΈ
Correct Answer Logic:
'Learned from' means acquired knowledge from.
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Library Sciences QUESTION #1520
Question 11
HEC National Digital Library (NDL) of Pakistan primarily serves which purpose in an academic context?
  • Providing free physical textbooks to students
  • Offering Pakistani university students and faculty access to international e-journals and databasesβœ”οΈ
  • Archiving rare Urdu manuscripts
  • Cataloguing government publications
Correct Answer Logic:
The HEC NDL provides Pakistani higher education institutions with subsidized access to thousands of international peer-reviewed e-journals, e-books, and research databases, enabling academic research without the cost burden on individual institutions.
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Boilers Mechanical Engineering QUESTION #2429
Question 12
The Fourier number (Fo) in transient conduction is defined as \(Fo = \alpha t / L_c^2\). It physically represents:
  • Dimensionless time of thermal diffusion: \(\frac{\alpha t}{L_c^2}\)βœ”οΈ
  • Ratio of convective to conductive heat transfer
  • Ratio of buoyancy to viscous forces
  • Ratio of momentum diffusivity to thermal diffusivity
Correct Answer Logic:
The Fourier number \(Fo=\alpha t/L_c^2\) is dimensionless time measuring how far thermal diffusion has penetrated into the body relative to its characteristic dimension \(L_c\).
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The Constitution of Pakistan QUESTION #9369
Question 13
The Federal Shariat Court under Article 203D cannot examine which categories of law for repugnancy to Injunctions of Islam?
  • Criminal laws
  • Fiscal laws and laws relating to levy and collection of taxes, banking or insurance practice and procedure (for ten years), Muslim personal law, and laws of court procedureβœ”οΈ
  • Civil laws relating to property
  • Constitutional provisions only
Correct Answer Logic:
Article 203B(c) defines 'law' for FSC purposes to exclude the Constitution, Muslim personal law, any law relating to court procedure, and β€” until expiry of ten years from commencement of the Chapter β€” any fiscal law or law relating to taxes, banking, or insurance. These exclusions carve out significant domains from the FSC's repugnancy jurisdiction.
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Physics QUESTION #7046
Question 14
Given a human pupil radius of $0.25 \text{ cm}$ and a viewing distance of $25 \text{ cm}$, what is the minimum distance between two objects that the eye can resolve at a wavelength of $500 \text{ nm}$?
  • $1 \ \mu\text{m}$
  • $30 \ \mu\text{m}$βœ”οΈ
  • $100 \ \mu\text{m}$
  • $300 \ \mu\text{m}$
Correct Answer Logic:

The limit of resolution (angular) is $\Delta \theta = \frac{1.22 \lambda}{D}$, where $D$ is the diameter ($2 \times 0.25 = 0.5 \text{ cm} = 0.005 \text{ m}$).

Minimum separation $y = d \cdot \Delta \theta = \frac{1.22 \lambda d}{D}$

$y = \frac{1.22 \times 500 \times 10^{-9} \times 0.25}{0.005} \approx 30.5 \times 10^{-6} \text{ m} = 30.5 \ \mu\text{m}$.

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Mathematics QUESTION #11176
Question 15
The boundary of a subset $B = \left\{\dfrac{1}{n}: n\in\mathbb{N}\right\}$ of $(\mathbb{R},d)$ is:
  • $B$
  • $\{0\}$
  • $B\cup\{0\}$βœ”οΈ
  • $\emptyset$
Correct Answer Logic:
The boundary $\partial B = \overline{B}\cap\overline{B^c}$. The closure of $B$ is $\overline{B} = B\cup\{0\}$ (since $0$ is the only limit point of $B$). The interior of $B$ is empty (no open interval is contained in $B$). Therefore $\partial B = \overline{B}\setminus B^0 = B\cup\{0\}$.
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Pakistan Affairs QUESTION #7685
Question 16
Pakistan signed a long-term agreement with which country for discounted oil in 2023?
  • Iran
  • UAE
  • Saudi Arabia
  • None of theseβœ”οΈ
Correct Answer Logic:
In 2023, Pakistan signed agreements for discounted oil with multiple countries, but the question seems to seek a specific answer. Russia provided discounted crude oil to Pakistan. However, since Russia is not in the options, the answer is 'None of these'.
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Psychology QUESTION #9742
Question 17
In organizational psychology, Kurt Lewin identified three classical leadership styles. Which style involves the leader making all decisions independently, giving clear directives, and expecting strict compliance from subordinates?
  • Laissez-faire
  • Democratic (Participative)
  • Autocratic (Authoritarian)βœ”οΈ
  • Transformational
Correct Answer Logic:
The Autocratic (Authoritarian) leadership style is characterized by the leader making all decisions unilaterally, maintaining strict control over subordinates, and expecting obedience without much input from the group. While this style can be efficient in crises or with inexperienced teams, it can reduce morale and creativity. Kurt Lewin's three styles are Autocratic, Democratic (Participative), and Laissez-faire (hands-off).
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Security Measures to Maintain Law and Order QUESTION #862
Question 18
Under Section 8, being "Always on Duty" means an officer must maintain professional conduct:
  • Only in uniform
  • At all times, even off-siteβœ”οΈ
  • Only during their shift
  • Only at the airport
Correct Answer Logic:
Being "always on duty" implies that an officer's conduct must reflect the Force's values 24/7, as they are subject to service law at all times.
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Maths QUESTION #4584
Question 19
Money is divided among A, B, C in ratio $2:3:5$. If C gets Rs.$100$, what does A get?
  • Rs.$20$
  • Rs.$40$βœ”οΈ
  • Rs.$60$
  • Rs.$200$
Correct Answer Logic:
If C gets $\frac{5}{10}$ of total = Rs.$100$, total = Rs.$200$. A gets $\frac{2}{10} \times 200 = 40$
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Tourism & Hospitality Management QUESTION #1584
Question 20
According to the Sustainable Tourism course, which of the following correctly identifies the THREE dimensions of sustainable tourism that must be managed simultaneously?
  • Economic, Political, and Technological dimensions
  • Socio-cultural, Environmental, and Economic dimensionsβœ”οΈ
  • Marketing, Operations, and Financial dimensions
  • Community, Government, and Private Sector dimensions
Correct Answer Logic:
The Sustainable Tourism course explicitly defines the three pillars of sustainable tourism management as: the Socio-cultural Dimension, the Environmental Dimension, and the Economic Dimension β€” each requiring distinct indicators, strategies, and management approaches.
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