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Chemistry QUESTION #5579

Iodoform ($CHI_3$) can be prepared by the iodoform test from all EXCEPT:

Ethyl methyl ketone ($CH_3COC_2H_5$)
Isopropyl alcohol ($(CH_3)_2CHOH$)
3-Methyl-2-butanone ($CH_3COCH(CH_3)_2$)
Isobutyl alcohol ($(CH_3)_2CHCH_2OH$)✔️

Correct Answer Logic:

The iodoform test is positive for compounds with $CH_3CO–$ or $CH_3CH(OH)–$ groups. Ethyl methyl ketone has $CH_3CO–$ → positive. Isopropyl alcohol has $CH_3CH(OH)–$ → positive. 3-Methyl-2-butanone has $CH_3CO–$ → positive. Isobutyl alcohol ($(CH_3)_2CHCH_2OH$) is a primary alcohol without $CH_3CH(OH)–$ group → does NOT give iodoform test.

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Biology QUESTION #4320

Question 5022

Which one of the following biomolecules is a polymer (polysaccharide)?

Sucrose
Pentose
Lactose
Glycogen✔️

Correct Answer Logic:

Glycogen is a polysaccharide (polymer of glucose) that serves as the main carbohydrate storage in animals. Sucrose and lactose are disaccharides; pentose is a monosaccharide.

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Architecture QUESTION #2372

Question 5023

In prestressed concrete design, the concept of the 'load balancing method' (T.Y. Lin's method) involves selecting the tendon profile such that the transverse component of prestress forces:

Maximizes the bending moment at midspan to increase the section capacity
Exactly balances a chosen portion of the applied gravity loads, resulting in a uniformly stressed (axially loaded) cross-section under the balanced load✔️
Eliminates all tensile stresses in the section at every load level
Positions the pressure line (C-line) at the kern point of the section

Correct Answer Logic:

In the load balancing method (T.Y. Lin, 1963), the tendon is profiled (typically parabolic for UDL) so its vertical component exactly counteracts a chosen portion of the gravity load (usually dead load or total service load). Under the balanced load $w_b = \dfrac{8 P e}{L^2}$, the beam is in pure axial compression with uniform stress $f = P/A$. Remaining loads (unbalanced) are analyzed by conventional elastic methods.

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Therapeutics and Patient Care QUESTION #3909

Question 5024

Which symptom cluster is most typically associated with left-sided cardiac failure due to pulmonary congestion?

Jugular venous distension and shortness of breath
Hepatojugular reflux and abdominal distension
Paroxysmal nocturnal dyspnoea and hepatojugular reflux
Shortness of breath and paroxysmal nocturnal dyspnoea✔️

Correct Answer Logic:

Left heart failure causes pulmonary congestion with symptoms of shortness of breath, orthopnoea, and paroxysmal nocturnal dyspnoea. Jugular venous distension and hepatojugular reflux are signs of right heart failure.

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CISA QUESTION #1729

Question 5025

Which of the following correctly lists valid and recognised types of audits?

Forensic, accounting, verification, regulatory
Integrated, operational, compliance, administrative✔️
Financial, SAS-74, compliance, administrative
Information systems, SAS-70, regulatory, procedural

Correct Answer Logic:

The recognised categories of audits include: financial, operational (SAS-70), integrated (SAS-94), compliance, administrative, forensic, and information systems. Options such as 'verification', 'procedural', 'SAS-74', and 'regulatory' are not recognised standard audit types. A forensic audit is specifically used to gather evidence relating to a potential criminal act and is a legitimate, distinct audit category.

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Library Sciences QUESTION #1542

Question 5026

In library space management, the concept of 'functional zoning' refers to:

Dividing the library building into floors based on collection size
Organizing library space into distinct areas based on the activities and user behaviors they are designed to support✔️
Painting different sections of the library in different colors
Allocating space exclusively for rare book storage

Correct Answer Logic:

Functional zoning in library space management means designing distinct areas based on their intended function and the behaviors they support — such as quiet study zones, collaborative spaces, children's areas, reference zones, and stack areas — to optimize user experience and workflow.

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English QUESTION #2762

Question 5027

Find the word SIMILAR IN MEANING to 'Abundant'.

Scarce
Plentiful✔️
Rare
Deficient

Correct Answer Logic:

'Abundant' means existing in large quantities. 'Plentiful' also means existing in great quantities or more than enough. So 'Plentiful' is the correct synonym. The others (Scarce, Rare, Deficient) are antonyms.

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Quantitative Reasoning QUESTION #3964

Question 5028

A train traveling between two locations is $10$ minutes behind schedule when moving at $40 \text{ mph}$ and $16$ minutes late at $30 \text{ mph}$. What is the total distance separating the two towns?

$720$ miles✔️
$12$ miles
$8\frac{6}{7}$ miles
$12\frac{7}{7}$ miles

Correct Answer Logic:

1

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MCQs Section QUESTION #4859

Question 5029

Choose the correct synonym of "GROTTO"

Statue
Cavern✔️
Neighbourhood
Type of moth

Correct Answer Logic:

A grotto is a small picturesque cave or an artificial ornamental cave. Cavern is its closest synonym, both referring to a cave-like structure.

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Commerce QUESTION #6152

Question 5030

Cutting department data — Budget: Overheads $40,000; Machine hours 2,800; Labour hours 2,600. Actual: Overheads $44,000; Machine hours 2,700; Labour hours 2,900. What OAR would have been used?

$14.29 per machine hour
$15.17 per labour hour
$15.38 per labour hour✔️
$16.30 per machine hour

Correct Answer Logic:

Option C ($15.38 per labour hour) is correct.

OAR uses budgeted figures: $40,000 ÷ 2,600 budgeted labour hours = $15.38 per labour hour.

Labour hours are the more appropriate basis as actual labour hours (2,900) exceed actual machine hours (2,700), indicating a labour-intensive department.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3303

Question 5031

The 'BCG' vaccine is used to provide protection against:

Hepatitis B
Tuberculosis✔️
Polio
Tetanus

Correct Answer Logic:

Bacillus Calmette-Guérin (BCG) is an attenuated strain of *Mycobacterium bovis*.

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Reading and Writing (Module-1) QUESTION #5314

Question 5032

Numerous ancient head sculptures are found without noses. This occurs because the nose is the most ______ part of the sculpture's head. It is delicate and sticks out, making it especially easy to break. Which choice completes the text with the most logical and precise word?

vulnerable✔️
prominent
expensive
intricate

Correct Answer Logic:

Because the nose is delicate and easily broken, 'vulnerable' is the most logical fit.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3033

Question 5033

Which of the following is an 'Efflorescent' substance?

Citric Acid
Sodium Carbonate decahydrate
Caffeine
All of these✔️

Correct Answer Logic:

Efflorescent substances lose water of crystallization when exposed to dry air.

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General Knowledge QUESTION #2610

Question 5034

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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Mechanical Engineering QUESTION #2388

Question 5035

The standard second-order closed-loop transfer function is written as:

$Y(s) = \frac{2\zeta\omega_n}{s^2+2\zeta\omega_n s+\omega_n^2}$
$Y(s) = \frac{\omega_n^2}{s^2+2\zeta\omega_n s+\omega_n^2}$✔️
$Y(s) = \frac{\omega_n^2}{s^2+\omega_n^2}$
$Y(s) = \frac{1}{s^2+2\zeta s+1}$

Correct Answer Logic:

The standard second-order system: $Y(s)=\frac{\omega_n^2}{s^2+2\zeta\omega_n s+\omega_n^2}$ where $\omega_n$ is the undamped natural frequency and $\zeta$ is the damping ratio. Poles: $s=-\zeta\omega_n\pm\omega_n\sqrt{\zeta^2-1}$.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3058

Question 5036

The 'Pharmacy Council of Pakistan' (PCP) is responsible for:

Setting medicine prices
Regulating pharmacy education and registration✔️
Manufacturing drugs
Treating patients

Correct Answer Logic:

PCP regulates the education and professional standards of pharmacists and technicians.

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CISA QUESTION #1789

Question 5037

Which document is best suited to formally define the relationship between an independent auditor and the engaging organization, and to record the mutually agreed-upon terms?

Audit charter
Annual audit plan
Engagement letter✔️
Auditor's report

Correct Answer Logic:

The engagement letter is used specifically with independent auditors to document the agreed-upon terms of the audit relationship. It records the mutual understanding between the audit committee and the independent auditor, and formally establishes the auditor's responsibility, accountability, and authority to conduct the engagement.

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