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Physics QUESTION #414

Question 1061

Objects cannot be accelerated to the speed of light in free space is consequence of

Mass variation
Energy-mass relationship
Inertia forces
All of these✔️

Correct Answer Logic:

All these factors prevent reaching light speed

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General Knowledge QUESTION #2632

Question 1062

BYOD stands for 'Bring Your Own Device.' In an office context, this term refers to:

A policy requiring all employees to purchase identical company-issued computers
The practice of allowing people to use their own personal devices for work purposes✔️
A procedure for returning defective company equipment for replacement
A method for backing up office data onto personal storage devices

Correct Answer Logic:

BYOD (Bring Your Own Device) refers to the practice of allowing people to use their own personal devices — such as smartphones, laptops, or tablets — for work purposes. While convenient, it raises IT security and management challenges for organizations.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3399

Question 1063

Which vitamin is synthesized in the skin by 'Ultraviolet (UV) Sunlight'?

Vitamin A
Vitamin B
Vitamin D✔️
Vitamin E

Correct Answer Logic:

Vitamin D is essential for calcium absorption and bone health.

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Islamic Studies QUESTION #7904

Question 1064

During drought, which Namaaz is offered for rain?

Salaat-e-Istasqa✔️
Salaat-e-Khisoo
Salaat e Kisoof
None of these

Correct Answer Logic:

Salaat-al-Istisqa is the special prayer for rain offered during drought. It consists of 2 rakats performed in congregation, similar to Eid prayer. The Imam delivers a sermon requesting Allah for rain, and people make sincere supplications. The Prophet (PBUH) performed this prayer when Medina faced drought.

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General Abilities QUESTION #2900

Question 1065

A train moves at $72$ km/h. Its speed in m/s is:

15 m/s
20 m/s✔️
25 m/s
30 m/s

Correct Answer Logic:

Conversion: $72 \times (5/18) = 4 \times 5 = 20$ m/s.

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Planning QUESTION #4978

Question 1066

In Ebenezer Howard's Garden City concept, what was the recommended maximum population?

10,000
32,000✔️
50,000
100,000

Correct Answer Logic:

Howard's Garden City model proposed a maximum population of 32,000 (30,000 in city proper plus 2,000 in agricultural belt) to maintain human scale, self-containment, and balance between town and country living.

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Library Sciences QUESTION #1494

Question 1067

The intellectual foundation of information organization, as argued by Svenonius (2000), rests primarily on which discipline?

Computer Science
Linguistics and Logic✔️
Sociology and Anthropology
Political Science

Correct Answer Logic:

Svenonius (2000) in 'The Intellectual Foundation of Information Organization' argues that the theoretical basis of information organization rests on linguistics and logic — the principles of how meaning is structured and communicated.

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Security Measures to Maintain Law and Order QUESTION #919

Question 1068

How should security staff handle a person exhibiting aggressive behavior?

Immediate physical restraint
De-escalation and calm communication✔️
Ignoring the behavior
Forcing the person to leave

Correct Answer Logic:

Calm communication and de-escalation techniques are the first steps to preventing a physical altercation.

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General Knowledge QUESTION #9016

Question 1069

Which blood cells protect the body against disease and infection?

Blood platelets (thrombocytes)
Hemoglobin
Red blood cells
White blood cells (leukocytes)✔️

Correct Answer Logic:

White blood cells fight infection.

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Boilers Mechanical Engineering QUESTION #2379

Question 1070

The transfer function of a PID (Proportional-Integral-Derivative) controller is:

$Y(s) = K + K_I s + K_D s^2$
$Y(s) = K + \frac{K_I}{s} + K_D s$✔️
$Y(s) = \frac{K_I}{s} + K_D s$
$Y(s) = K \cdot K_I \cdot K_D \cdot s$

Correct Answer Logic:

The PID controller combines all three actions: $Y(s)=K+\frac{K_I}{s}+K_D s$. P provides immediate response, I eliminates steady-state error, D adds damping and predictive action.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #2954

Question 1071

Which mechanism describes the 'Leaching' effect in glass containers used for alkaline preparations?

Adsorption of drug to glass
Release of alkali from glass into the preparation✔️
Evaporation of solvent
Oxidation of the active ingredient

Correct Answer Logic:

Type II and III glass can release surface alkalis when in contact with water or alkaline solutions, affecting the stability of the drug.

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Therapeutics and Patient Care QUESTION #3869

Question 1072

Which penicillin retains its antibacterial activity in the presence of the beta-lactamase enzyme penicillinase?

Amoxicillin
Flucloxacillin✔️
Phenoxymethylpenicillin
Ticarcillin

Correct Answer Logic:

Flucloxacillin is a penicillinase-resistant penicillin due to its bulky side chain that prevents the beta-lactamase enzyme from accessing the beta-lactam ring.

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Dairy Food Science and Technology QUESTION #5898

Question 1073

The minimum fat content of butter as per Codex Alimentarius standard specifications is:

$75\%$
$80\%$✔️
$85\%$
$90\%$

Correct Answer Logic:

According to Codex Alimentarius and most national standards, butter must contain a minimum of $80\%$ milk fat. It also contains $\leq 16\%$ water and $\leq 2\%$ milk solids-not-fat (MSNF).

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Boilers Mechanical Engineering QUESTION #2434

Question 1074

The net radiation heat exchange rate between a gray surface (emissivity $\varepsilon$, area $A$, temperature $T_s$) and a large enclosure (temperature $T_{cav}$) is:

$q_{rad} = \sigma A(T_s^4 - T_{cav}^4)$ (blackbody only)
$q_{rad} = \varepsilon\sigma A(T_s^4 - T_{cav}^4)$✔️
$q_{rad} = h_r A(T_s^2 - T_{cav}^2)$
$q_{rad} = \varepsilon\sigma A(T_s - T_{cav})^4$

Correct Answer Logic:

Net radiation from a gray surface in a large enclosure: $q_{rad}=\varepsilon\sigma A(T_s^4-T_{cav}^4)$. This can be linearized as $q_{rad}=h_r A(T_s-T_{cav})$.

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Pakistan Affairs QUESTION #622

Question 1075

What is the name of the economist who developed the current Human Development Index (HDI)?

Dr. Qaisar Bengali
Dr. Mahbub ul Haq✔️
Dr. Hafeez Pasha
None of these

Correct Answer Logic:

Dr. Mahbub ul Haq, a Pakistani economist, created the HDI in 1990 .

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Physics QUESTION #1157

Question 1076

The angle of incidence for which polarization is maximum is called:

Scattering angle
Angle of reflection
Polarization angle✔️
None of these

Correct Answer Logic:

The angle of incidence at which reflected light is completely polarized is called the polarization angle or Brewster's angle ($\theta_B$), given by $\tan\theta_B = n$, where $n$ is the refractive index of the denser medium.

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Education QUESTION #6777

Question 1077

A teacher asks students to sort unseen essay papers by quality (best to worst), then assigns grades based on relative rank. According to holistic rubric theory, which grading philosophy does this approach embody, and what is its key limitation?

Criterion-referenced philosophy; it lacks discriminating power
Norm-referenced philosophy; papers are ranked relative to each other rather than against absolute quality criteria, which makes it unsuitable for large numbers of papers✔️
Absolute standard philosophy; it can be applied consistently to any number of papers
Analytic philosophy; sub-criteria are implicitly weighted differently

Correct Answer Logic:

This is the fourth approach to holistic scoring — ranking papers relative to each other — which aligns with norm-referenced or relative standard grading. Its critical limitation: it cannot be applied to large sets of papers because it requires reading and comparing all papers simultaneously, and scores depend on the composition of the specific group rather than absolute quality.

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