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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3545

Question 1121

The 'Adrenal' hormone used to treat severe allergic reactions is:

Insulin
Thyroxine
Epinephrine (Adrenaline)✔️
Estrogen

Correct Answer Logic:

Epinephrine is the drug of choice for anaphylaxis.

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Quantitative Reasoning QUESTION #70

Question 1122

A box contains 5 red, 3 blue, and 2 green balls. Two balls are drawn at random without replacement.

1/5
7/15
17/45✔️
8/15

Correct Answer Logic:

Total balls = 10

Use complement method:

P(at least one green)

= 1 − P(no green)

Balls without green = 8

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Biology QUESTION #4179

Question 1123

In chromosome, positively charged histone proteins are organized with negatively charged DNA. The positive charges of histone are due to an abundance of basic amino acids:

arginine and alanine
arginine and lysine✔️
lysine and alanine
phenylalanine and arginine

Correct Answer Logic:

Arginine and lysine are basic amino acids with positive charges that bind to negatively charged DNA.

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Security Measures to Maintain Law and Order QUESTION #858

Question 1124

In maintaining order, "Discriminatory Profiling" is unethical. This refers to targeting individuals based solely on:

Suspicious behavior
Race, religion, or ethnicity✔️
Lack of ID
Travel history

Correct Answer Logic:

Professional security profiling must be based on behavior (non-verbal cues) rather than protected identity characteristics.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3421

Question 1125

'Scurvy' is caused by the failure of the body to hydroxylate which amino acids in collagen?

Glycine and Alanine
Proline and Lysine✔️
Valine and Leucine
Serine and Threonine

Correct Answer Logic:

Vitamin C is a required cofactor for prolyl hydroxylase.

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English QUESTION #4440

Question 1126

To become a write think of a plot-make points on how the story will progress and pen it down. The phrase ‘pen it down’ here means:

To writ
To write✔️
To throw the pen
To throw it down

Correct Answer Logic:

The phrase "pen it down" means **to write** because in this context, "pen" is used as a verb meaning "to write or compose," and "down" suggests putting thoughts onto paper. The passage ends with the instruction: *"Think of a plot—make points on how the story will progress and pen it down,"* which clearly encourages the reader to write the plot points on paper. The other options—"to writ" (an archaic or incorrect form), "to throw the pen," or "to throw it down"—do not fit the logical or grammatical meaning of the sentence.

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General Knowledge QUESTION #2585

Question 1127

An office worker is following a step-by-step checklist to process monthly invoices. This checklist is most similar to which computing concept?

Binary System
RGB Model
Algorithm✔️
Character Encoding

Correct Answer Logic:

An algorithm is a series of steps that solves specific problems. A step-by-step checklist for processing invoices is exactly analogous — it provides ordered instructions to reach a defined outcome, just as an algorithm does in computing.

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Physics QUESTION #1165

Question 1128

At constant pressure and volume, the exact relation between $C_p$ and $C_v$ is:

C_p > C_v
$C_p / C_v > 1$
$C_p - C_v = R$
All of these✔️

Correct Answer Logic:

All three relations are simultaneously true for an ideal gas: (A) $C_p > C_v$ because at constant pressure extra heat is needed to do work against expansion. (B) $C_p/C_v = \gamma > 1$. (C) The Mayer relation: $C_p - C_v = R$ (per mole). So all of these are correct.

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Islamic Studies QUESTION #230

Question 1129

At what time is the Kusoof prayer performed?

Wind
Solar eclipse✔️
Lunar eclipse
None of these

Correct Answer Logic:

Salat al-Kusoof is offered during a solar eclipse; Salat al-Khusoof is for a lunar eclipse.

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Architecture QUESTION #2361

Question 1130

In the Finite Element Method (FEM) applied to structural analysis, the stiffness matrix $[K]$ of a structure is assembled from element stiffness matrices $[k_e]$. For a 2-node bar element of length $L$, cross-sectional area $A$, and modulus $E$, the element stiffness matrix is:

$[k_e] = \dfrac{EA}{L} \begin{bmatrix} 1 & -1 \\ -1 & 1 \end{bmatrix}$✔️
$[k_e] = \dfrac{EA}{L} \begin{bmatrix} 1 & 1 \\ 1 & 1 \end{bmatrix}$
$[k_e] = \dfrac{EI}{L^3} \begin{bmatrix} 12 & -6L \\ -6L & 4L^2 \end{bmatrix}$
$[k_e] = \dfrac{EA}{L^2} \begin{bmatrix} 1 & -1 \\ -1 & 1 \end{bmatrix}$

Correct Answer Logic:

For a 2-node axial (bar) element with DOFs $\{u_1, u_2\}$, the element stiffness matrix derived from the principle of virtual work is $[k_e] = \dfrac{EA}{L}\begin{bmatrix}1 & -1 \\ -1 & 1\end{bmatrix}$. This is symmetric and singular (as expected for an unrestrained element). Option C is part of the Euler-Bernoulli beam element stiffness matrix (for bending DOFs).

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Urdu QUESTION #5252

Question 1131

سفر وسیلۂ ظفر کس کا سفر نامہ ہے؟

شوکت علی
مسرت پرچہ
ڈاکٹر وزیر آغا✔️
ریحانہ عبداللہ

Correct Answer Logic:

سفر وسیلۂ ظفر ڈاکٹر وزیر آغا کا سفر نامہ ہے۔

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Security Measures to Maintain Law and Order QUESTION #944

Question 1132

What is the purpose of 'Explosive Trace Detection' (ETD)?

To find stolen money
To detect vapors or particles of explosives✔️
To weigh heavy bags
To check for narcotics

Correct Answer Logic:

ETD technology can find microscopic traces of explosives that are invisible to the naked eye.

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Physics QUESTION #422

Question 1133

The heat produced by a current I in the wire of resistance R during time interval t is

I?/Rt
I?Rt✔️
I?/R/t
IR?t

Correct Answer Logic:

Heat = I?Rt (Joule heating formula)

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Biology QUESTION #4237

Question 1134

The part of male reproductive system that maintains the temperature for sperm production is:

Testes
Scrotum✔️
Vas deferens
Epididymis

Correct Answer Logic:

Scrotum maintains temperature for sperm production.

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Boilers Mechanical Engineering QUESTION #4008

Question 1135

In an 'Oil-Fired' boiler, 'Atomization' of the fuel is necessary to:

Make the fuel smell better
Increase the surface area of the fuel for rapid and complete combustion✔️
Cool the fuel down
Change the color of the flame

Correct Answer Logic:

Turning liquid oil into a fine mist allows it to mix thoroughly with air.

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MCQs Section QUESTION #4843

Question 1136

Pick the word nearly opposite in meaning to "VALEDICTORY"

Farewell
Final
Hopeful✔️
Parting

Correct Answer Logic:

Valedictory means serving as a farewell or relating to departure. Its antonym is 'hopeful,' which conveys anticipation and expectation rather than departure or ending.

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Physics QUESTION #399

Question 1137

In gases

the speed of sound is inversely proportional to __________ of the density when other factors are same.✔️
Square root
Square
Third power

Correct Answer Logic:

No explanation provided for this question.

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Mechanical Engineering QUESTION #2544

Question 1138

The magnitude of the cross product $\mathbf{A}\times\mathbf{B}$ equals:

The area of the triangle formed by $\mathbf{A}$ and $\mathbf{B}$
The area of the parallelogram formed by $\mathbf{A}$ and $\mathbf{B}$✔️
The volume of the parallelepiped formed by $\mathbf{A}$ and $\mathbf{B}$
The scalar projection of $\mathbf{A}$ onto $\mathbf{B}$

Correct Answer Logic:

By definition, $|\mathbf{A}\times\mathbf{B}|=|A||B|\sin\theta$, which equals the area of the parallelogram spanned by the two vectors. The area of the triangle is half this value.

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