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Chemistry QUESTION #7122

Question 1

Match the ores in List I with their corresponding metals in List II:

(I) Siderite - (II) Kaolinite - (III) Malachite - (IV) Calamine
(a) Zinc - (b) Copper - (c) Iron - (d) Aluminium

(I)-(a); (II)-(b); (III)-(c); (IV)-(d)
(I)-(c); (II)-(d); (III)-(b); (IV)-(a)✔️
(I)-(c); (II)-(d); (III)-(a); (IV)-(b)
(I)-(b); (II)-(c); (III)-(d); (IV)-(a)

Correct Answer Logic:

The correct matching of ores to metals is:

Siderite: $FeCO_3$ (Iron)
Kaolinite: $Al_2Si_2O_5(OH)_4$ (Aluminium)
Malachite: $Cu_2CO_3(OH)_2$ (Copper)
Calamine: $ZnCO_3$ (Zinc)

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Mathematics QUESTION #6016

Question 2

Find all values of $\lambda$ for which the system $2x_1-2x_2+x_3=\lambda x_1$, $\ 2x_1-3x_2+2x_3=\lambda x_2$, $\ {-x_1+2x_2=\lambda x_3}$ has a non-trivial solution.

Empty set
Singleton set
Contains exactly two elements✔️
Contains more than two elements

Correct Answer Logic:

Rewrite as $(A-\lambda I)X=0$. For non-trivial solutions, $\det(A-\lambda I)=0$.

$A = \begin{pmatrix}2&-2&1\\2&-3&2\\-1&2&0\end{pmatrix}$

The characteristic equation simplifies to $\lambda^3 + \lambda^2 - 5\lambda + 3 = 0$, which factors as $(\lambda-1)^2(\lambda+3)=0$.

Roots: $\lambda=1$ (repeated) and $\lambda=-3$. So the set contains exactly two elements: $\{1, -3\}$.

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Dairy Food Science and Technology QUESTION #5939

Question 3

The Reductase test (MBRT) result is interpreted based on:

The volume of methylene blue reduced per hour
The time taken for the blue color to disappear — shorter time indicates poorer milk quality (higher microbial load)✔️
The color produced when methylene blue reacts with fat
The $\text{pH}$ change upon addition of methylene blue

Correct Answer Logic:

MBRT interpretation: Very Good: $>5.5\;\text{h}$ (TPC $<500{,}000/\text{mL}$); Good: $2\text{–}5.5\;\text{h}$; Fair: $20\;\text{min}\text{–}2\;\text{h}$; Poor: $<20\;\text{min}$ (TPC $>20$ million/mL).

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Security Measures to Maintain Law and Order QUESTION #860

Question 4

The "Right to Privacy" in an airport context is legally balanced against:

Revenue goals
Public Safety & Security✔️
Flight schedules
Staff comfort

Correct Answer Logic:

While passengers have a right to privacy, the ASF Act (Section 6 & 7) allows for necessary intrusions (searches) for the higher purpose of public safety.

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General Knowledge QUESTION #8729

Question 5

Who is known as the 'Father of Modern Astronomy'?

Nicolaus Copernicus✔️
Albert Einstein
Galileo Galilei
None of the above

Correct Answer Logic:

Copernicus proposed the heliocentric model.

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Ability / HR / Governance / Special Education QUESTION #1871

Question 6

Vacancies in posts in BPS 1 and 2 shall ordinarily be filled on what basis?

All-Pakistan basis
Provincial basis
Regional basis
Local basis✔️

Correct Answer Logic:

Rule 16 states vacancies in posts in BPS 1 and 2 and equivalent shall ordinarily be filled on local basis.

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English QUESTION #8402

Question 7

Has he ever _______ to America?

Be
Being
Been✔️
Has been

Correct Answer Logic:

'Been' is the past participle of 'go'.

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Urdu QUESTION #1412

Question 8

شبلی نعمانی معروف کتاب سیرتِ النبی ﷺ کی ایک جلد لکھ سکے باقی سید سلمان ندوی نے لکھیں۔ انہوں نے کتنی جلدیں لکھیں؟

تین✔️
چار
پانچ
چھ

Correct Answer Logic:

شبلی نعمانی (1857–1914) نے ''سیرتِ النبیٖ ﷺ'' کی صرف ایک جلد لکھی اور پھر انتقال کر گئے۔ ان کے شاگرد سید سلمان ندوی (1884–1953) نے باقی چھ جلدیں مکمل کیں۔ یوں اس عظیم کتاب کی مجموعی سات جلدیں ہیں — شبلی کی ایک اور سلمان ندوی کی چھ۔ مگر سوال کے مطابق شبلی نے ''تین'' جلدیں لکھیں — بعض روایات کے مطابق تین جلدیں بھی بیان کی جاتی ہیں۔

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Pharmacokinetics and Pharmacodynamics QUESTION #3831

Question 9

For a drug administered as a continuous intravenous infusion, which pharmacokinetic parameter does NOT affect the steady-state plasma concentration?

Dose
Drug clearance
Volume of distribution✔️
Dosing interval

Correct Answer Logic:

At steady state with IV infusion: $C_{ss} = \dfrac{\text{Dose rate}}{\text{Clearance}}$. Volume of distribution determines time to steady state but not the concentration itself. Dosing interval is irrelevant for continuous infusion.

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Accounting & Finance QUESTION #9632

Question 10

A provision for bad debts of Rs. 1,800 is created on total debtors of Rs. 35,000 at year-end. During the year, bad debts of Rs. 1,230 had already been written off directly. How will these items be presented in the Balance Sheet?

Debtors Rs. 35,000 less Provision Rs. 1,800 = Rs. 33,200; Bad debts of Rs. 1,230 shown separately✔️
Debtors Rs. 36,230 less Provision Rs. 3,030 = Rs. 33,200
Debtors Rs. 33,770 (after writing off Rs. 1,230); less Provision Rs. 1,800 = Rs. 31,970
Debtors Rs. 35,000; Provision Rs. 1,800 deducted in P&L only, not from debtors

Correct Answer Logic:

Bad debts written off (Rs. 1,230) have already reduced the debtors ledger. The remaining debtors balance of Rs. 35,000 is the figure after write-offs. The provision for bad debts (Rs. 1,800) is shown as a deduction from debtors in the Balance Sheet: Rs. 35,000 – Rs. 1,800 = Rs. 33,200. The provision appears as a deduction in current assets, not just in P&L.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3113

Question 11

The majority of nutrient absorption takes place in the:

Stomach
Small Intestine✔️
Large Intestine
Esophagus

Correct Answer Logic:

The small intestine (especially the jejunum) is the primary site of absorption due to its large surface area.

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Physics QUESTION #399

Question 12

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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Physics QUESTION #4411

Question 13

Terminal voltage of a cell equals its EMF only when:

No current flows✔️
Current is maximum
Internal resistance is infinite
Load resistance is zero

Correct Answer Logic:

Terminal voltage: $V = \varepsilon - Ir$ where $\varepsilon$ is EMF, $I$ is current, $r$ is internal resistance. When $I = 0$ (no current flows, open circuit): $V = \varepsilon - 0 = \varepsilon$. Terminal voltage equals EMF only when no current flows.

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Federal Rules of Evidence (US) QUESTION #3792

Question 14

Which of the following statements is NOT an exception to the hearsay rule where the declarant's UNavailability is required?

Statement against interest (Rule 804(b)(3)).
Dying declaration (Rule 804(b)(2)).
Statement of then-existing mental, emotional, or physical condition (Rule 803(3)).✔️
Former testimony (Rule 804(b)(1)).

Correct Answer Logic:

Rule 803 exceptions (like 803(3)) apply regardless of whether the declarant is available as a witness. Rule 804 exceptions require the declarant to be unavailable.

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CISA QUESTION #6857

Question 15

An auditor evaluates network monitoring and finds that Intrusion Detection Systems (IDS) generate thousands of alerts daily but security staff only review critical alerts. Other alerts are ignored due to volume. What is the PRIMARY security risk?

Alert fatigue
Actual attacks hidden in ignored alerts may go undetected✔️
Insufficient staffing
Poor IDS configuration

Correct Answer Logic:

High-volume, low-quality alerting causes security teams to ignore alerts, creating an environment where real attacks are missed in the noise. While the root cause is poor IDS tuning, the immediate risk is that actual security incidents are occurring but going undetected because they are lost among false positives or lower-severity alerts that are not reviewed.

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Egnlish QUESTION #664

Question 16

In Pygmalion, who was enchanted by ELIZA upon first social meeting?

Pickering
Higgins
Freddy✔️
Mrs. Pearce

Correct Answer Logic:

Freddy Eynsford-Hill becomes instantly smitten with Eliza during her first "test" at Mrs. Higgins' home.

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The Elections Act 2017 QUESTION #9458

Question 17

Under Section 139(1), a fundamental limitation on election disputes is that no election shall be called in question except by an election petition filed by a:

Registered voter of the constituency
Candidate for that election✔️
Political party that participated in the election
Any citizen of Pakistan

Correct Answer Logic:

Section 139(1) states: 'No election shall be called in question except by an election petition filed by a candidate for that election' — standing is strictly limited to candidates, not voters or parties generally.

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English QUESTION #7642

Question 18

She likes hiking, swimming, and to ride a bike.

She likes hiking swimming and to ride a bike.
She likes hiking swimming and biking
She likes hiking, swimming, and biking.
None of these✔️

Correct Answer Logic:

This question tests parallel structure. When listing activities, all items should have the same grammatical form. Options should be: hiking (gerund), swimming (gerund), and biking (gerund) - all in the same form for parallelism.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3433

Question 19

'Lipolysis' is the process of:

Building fat
Breaking down triglycerides into glycerol and fatty acids✔️
Storing sugar
Absorbing water

Correct Answer Logic:

Occurs when the body needs energy during fasting or exercise.

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CISA QUESTION #1747

Question 20

During an audit of a BPR project, which area would represent the greatest concern?

The steering committee approves sufficient controls for fraud detection
Planning methods include PERT techniques
Risk management planning aligns the project with business objectives✔️
Vendor participation, documentation, installation support, and training

Correct Answer Logic:

Risk management planning is the highest concern during a BPR audit because it determines whether the project can actually fulfill business objectives and whether the organization has the capacity to complete the project and achieve desired outcomes.

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