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Electrical Engineering QUESTION #2176

In a superposition problem, a $5\,\Omega$ resistor carries $1\,\text{A}$ when only $V_1$ is active, and $-0.5\,\text{A}$ when only $I_1$ is active. The actual power dissipated in the resistor when both sources act simultaneously is:

$1.25\,\text{W}$✔️
$3.125\,\text{W}$
$6.25\,\text{W}$
$1.875\,\text{W}$

Correct Answer Logic:

Superposition applies to current (not power): $I_{total} = 1 + (-0.5) = 0.5\,\text{A}$. $P = I^2 R = (0.5)^2\times5 = 1.25\,\text{W}$. Directly superimposing powers would give $1^2\times5 + 0.25\times5 = 6.25\,\text{W}$ — a common but incorrect approach.

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Reading and Writing (Module-1) QUESTION #5443

Question 2

Sona Charaipotra and Dhonielle Clayton founded CAKE Literary, a book packaging ____ specializes in diverse stories for young people.

company,
company that✔️
company
company, that

Correct Answer Logic:

The relative pronoun "that" introduces the clause "specializes in..." without a comma before it.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3572

Question 3

Which 'Sugar' is commonly used as a tablet diluent and is obtained from milk?

Sucrose
Lactose✔️
Fructose
Glucose

Correct Answer Logic:

Lactose (milk sugar) is a common pharmaceutical excipient.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3321

Question 4

'Hemolysis' on a Blood Agar plate appearing as a CLEAR zone around a colony is:

Alpha-hemolysis
Beta-hemolysis✔️
Gamma-hemolysis
No hemolysis

Correct Answer Logic:

Beta-hemolysis indicates complete destruction of red blood cells.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3668

Question 5

'Gelatin' is obtained by the partial hydrolysis of:

Starch
Collagen from animal skin and bones✔️
Cellulose
Fruit pectin

Correct Answer Logic:

Gelatin is used to make capsule shells.

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Others section QUESTION #4736

Question 6

How many players are there in each team during a basketball game?

5✔️
7
9
11

Correct Answer Logic:

A standard basketball team has 5 players on the court at any given time, as established by the rules of FIBA and NBA.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3302

Question 7

A 'Live Attenuated' vaccine contains:

Dead microorganisms
Weakened but living microorganisms✔️
Only viral DNA
Synthetic chemicals

Correct Answer Logic:

Attenuated vaccines (like MMR or BCG) trigger a strong immune response without causing full-blown disease.

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Accounting Finance and Punjab Sales Tax on Services QUESTION #2571

Question 8

Under section 52(2)(b), a notice for recovery of a refund that was not due (obtained through fraud, forgery, false documents etc.) must be served within:

Three years from the date of receipt of refund
Five years from the end of the financial year in which the refund was received✔️
Eight years of the relevant tax period
Ten years from the date of erroneous refund

Correct Answer Logic:

Section 52(2)(b) as amended by Punjab Finance Act, 2022 provides that the show-cause notice for recovery of wrongly obtained refund must be issued within FIVE YEARS FROM THE END OF THE FINANCIAL YEAR IN WHICH THE REFUND WAS RECEIVED.

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Security Measures to Maintain Law and Order QUESTION #942

Question 9

How does 'Patrolling' contribute to law and order?

It allows guards to exercise
It serves as a visible deterrent✔️
It helps in finding lost items
It replaces CCTV

Correct Answer Logic:

Visible patrols discourage criminal activity and provide a rapid response capability across the aerodrome.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3393

Question 10

Enzymes act as biological catalysts by:

Increasing the temperature of a reaction
Lowering the activation energy✔️
Changing the final product
Being consumed in the reaction

Correct Answer Logic:

Enzymes speed up reactions without being used up themselves.

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Mechanical Engineering QUESTION #2475

Question 11

The Grübler–Dobrovolski formula for the mobility (DOF) $M$ of a general spatial mechanism of family $f$ with $n$ movable links and kinematic pairs of class $j$ is:

$M = 3n - 2c_5 - c_4$
$M = 6n - \sum_{j=f+1}^{5}(j-f)c_j$
$M = (6-f)n - \sum_{j=f+1}^{5}(j-f)c_j$✔️
$M = 6n - 5c_5 - 4c_4$

Correct Answer Logic:

The Dobrovolski formula is $M=(6-f)n-\sum_{j=f+1}^{5}(j-f)c_j$, where $f$ is the family number, $n$ is the number of movable links, and $c_j$ is the number of kinematic pairs of class $j$. For planar mechanisms $f=3$, this reduces to $M=3n-2c_5-c_4$.

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Physics QUESTION #1049

Question 12

Two gases A and B in cylinders with pistons of radius $r_A$ and $r_B$. Equal heat at constant pressure. Pistons move 16 cm and 9 cm. Internal energy change same. Ratio $r_A/r_B$ is:

$\dfrac{2}{\sqrt{3}}$
$\dfrac{\sqrt{3}}{2}$
$\dfrac{4}{3}$✔️
$\dfrac{3}{4}$

Correct Answer Logic:

At constant pressure: $Q = \Delta U + W$. Same $\Delta U$ and same Q: so $W_A=W_B$. Work done $=p\cdot\pi r^2\cdot d$. So $\pi r_A^2\cdot16 = \pi r_B^2\cdot9\Rightarrow\frac{r_A^2}{r_B^2}=\frac{9}{16}\Rightarrow\frac{r_A}{r_B}=\frac{3}{4}$.

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English QUESTION #2675

Question 13

Choose the pair that expresses a similar relationship as: 'Gloves : Hands'

Socks : Feet
Hat : Head
Shirt : Body
All of the above✔️

Correct Answer Logic:

Gloves cover hands; socks cover feet, hats cover heads, and shirts cover the body.

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English QUESTION #75

Question 14 (Select all that apply)

Which of the following sentences has correct subject verb agreement?

The teacher give the students homework.
The teacher gives the students homework.✔️
The teachers gives the student homework.
The teachers given the student homework.

Correct Answer Logic:

Subject-verb agreement is a fundamental rule in English where the verb must match the number of the subject.

Singular Subject: Takes a singular verb (usually ends in -s or -es in the present tense).
Plural Subject: Takes a plural verb (does not end in -s).

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English QUESTION #691

Question 15

"Transcendentalism" emphasizes the importance of:

Tradition
Reason over intuition
Individual intuition✔️
None of these

Correct Answer Logic:

Figures like Emerson believed that individuals have divine intuition and should rely on themselves rather than social institutions.

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Physics QUESTION #4386

Question 16

A fluid is flowing through a tube. To undergo transition from laminar to turbulent flow, its velocity must be:

Slightly less than critical velocity
Equal to critical velocity
Greater than critical velocity✔️
Increasing gradually but less than critical velocity

Correct Answer Logic:

Flow transitions from laminar to turbulent when the Reynolds number $Re = \dfrac{\rho v d}{\eta}$ exceeds a critical value. This occurs when fluid velocity exceeds the critical velocity.

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General Knowledge QUESTION #2610

Question 17

Which of the following is NOT a characteristic of 'Open Source' software?

The source code is freely available to view and modify
Other developers can distribute the software for free
The software cannot be used by commercial organizations under any circumstances✔️
Developers can share and improve the software collaboratively

Correct Answer Logic:

Open source means developers will let other developers share, modify, and distribute software for free. However, open source software CAN be used by commercial organizations — many businesses use Linux and other open source tools commercially. The restriction on commercial use is NOT a defining feature of open source.

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Library Sciences QUESTION #1572

Question 18

In serials management, a 'check-in' record serves which primary function?

Recording the cost of each serial subscription
Systematically tracking the receipt of each issue of a periodical to identify gaps, missing issues, or irregular publication✔️
Binding completed serial volumes
Providing access to serial articles through an index

Correct Answer Logic:

The check-in record (or kardex) is a serials control tool that tracks the arrival of each issue of a periodical subscription. It enables librarians to quickly identify missing or late issues, claim them from vendors, and maintain a complete run — critical for academic and special library serials management.

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Library Sciences QUESTION #1502

Question 19

In verbal subject approaches, a pre-coordinated subject heading system combines multiple subject concepts at which stage?

At the time of searching
At the time of indexing✔️
At the time of acquisition
At the time of shelving

Correct Answer Logic:

Pre-coordination occurs at the time of indexing — the cataloguer combines multiple concepts into a single complex heading before the record is stored. Post-coordination allows users to combine terms at the time of searching.

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Architecture QUESTION #2340

Question 20

According to Rankine's theory, the passive earth pressure coefficient $K_p$ for a frictionless vertical wall with horizontal cohesionless backfill (friction angle $\phi$) is:

$K_p = \dfrac{1 - \sin\phi}{1 + \sin\phi}$
$K_p = \tan^2\!\left(45° - \dfrac{\phi}{2}\right)$
$K_p = \dfrac{1 + \sin\phi}{1 - \sin\phi}$✔️
$K_p = 1 + \sin\phi$

Correct Answer Logic:

Rankine's passive pressure coefficient: $K_p = \dfrac{1 + \sin\phi}{1 - \sin\phi} = \tan^2\!\left(45° + \dfrac{\phi}{2}\right)$. Note that $K_p = 1/K_a$. Passive pressure develops when the wall moves into the retained soil, mobilizing the maximum shear resistance. Options A and B represent the active coefficient $K_a$.

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