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Chemistry QUESTION #1443

It has at least one plane of symmetry.
It has a chiral center and is non-superimposable on its mirror image.✔️
It rotates polarized light to the left.
None of these

Correct Answer Logic:

A molecule is chiral if it is non-superimposable on its mirror image — this is the fundamental definition of chirality. The presence of a chiral center (a carbon bearing four different substituents) is the most common cause, but not the only one. Option (A) is wrong: a plane of symmetry makes a molecule achiral. Option (C) is wrong: rotating light to the left makes it levorotatory (–), but chirality doesn't require any specific direction of rotation.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3201

Question 2

'Glomerular Filtration Rate' (GFR) in a healthy adult is approximately:

$10\text{ ml/min}$
$125\text{ ml/min}$✔️
$500\text{ ml/min}$
$1\text{ Liter/min}$

Correct Answer Logic:

GFR is the volume of filtrate formed by both kidneys per minute.

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English QUESTION #8367

Question 3

Choose the correct sentence from the given:

He brushed on my argument.
He brushed aside my argument.✔️
He brushed to my argument.
He brushed over my argument.

Correct Answer Logic:

'Brushed aside' means dismissed or ignored.

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Biology QUESTION #7285

Question 4

The chief water-conducting elements of xylem in gymnosperms are:

Tracheids✔️
Vessels
Fibres
Transfusion tissue

Correct Answer Logic:

Tracheids are the primary water-conducting elements in gymnosperm xylem. Unlike angiosperms, most gymnosperms lack vessels (except Gnetum and Ephedra). Tracheids are elongated, dead cells with pitted walls that conduct water through pits. Transfusion tissue aids conduction in gymnosperm leaves; fibres provide support.

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Chemistry QUESTION #7107

Question 5

Which of the following metals cannot be produced through the electrolysis of an aqueous solution containing its salts?

$Cu$
$Cr$
$Ag$
$Ca$✔️

Correct Answer Logic:

Metals with very high negative reduction potentials like $Ca$ (Calcium) react vigorously with water. In an aqueous solution, water itself is reduced to hydrogen gas at the cathode instead of the metal ions. Therefore, $Ca$ must be obtained by electrolysis of its molten salts rather than aqueous ones.

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Tourism & Hospitality Management QUESTION #1591

Question 6

Under the Pakistan Tourist Destinations course, which of the following is correctly classified as a 'cultural heritage resource' rather than a natural resource?

The Karakoram mountain range
Mangrove ecosystems
Buddhist stupas, Sikh shrines, and Muslim tombs✔️
The Indus River and its tributaries

Correct Answer Logic:

The Pakistan Tourist Destinations course classifies Buddhist, Sikh, Hindu, and Muslim sites (stupas, shrines, tombs, mosques) as cultural heritage resources — specifically listed under 'Muslim, Buddhist, Sikh, Hindu, Socio-cultural resources.' Natural landforms and water bodies are classified separately as natural resources.

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Accounting & Finance QUESTION #6147

Question 7

A trader calculates trade receivables turnover as: (Trade Receivables ÷ Denominator) × 365. What is the denominator?

Credit purchases
Credit sales✔️
Trade payables
Trade receivables

Correct Answer Logic:

Option B (Credit sales) is correct.

Trade receivables arise from credit sales. The formula is:

Trade Receivables Days = (Trade Receivables ÷ Credit Sales) × 365

Credit purchases relate to trade payables, not receivables.

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Economics QUESTION #1704

Question 8

Pakistan's chronically low tax-to-GDP ratio — among the lowest in South Asia — is attributable to which combination of structural and institutional factors?

Disproportionate reliance on regressive indirect taxes
Agricultural sector exemptions and exclusion of large informal income from the tax net
Weak documentation of the tax base and inadequate enforcement capacity
All of these✔️

Correct Answer Logic:

Pakistan's tax-to-GDP ratio (historically around 9–11%) is explained by a confluence of factors: (1) heavy reliance on indirect taxes (sales tax, customs duties) rather than broad-based direct taxes; (2) constitutional and political exemptions for agriculture, despite its large economic size; (3) a large undocumented informal economy estimated at 35–40% of GDP; and (4) weak FBR enforcement, narrow withholding tax net, and rampant tax evasion by powerful sectors.

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English QUESTION #2781

Question 9

What does the PHRASAL VERB 'BREAK DOWN' mean?

To demolish a building forcefully
To stop functioning / to lose emotional control✔️
To reduce the price of something
To separate from a group

Correct Answer Logic:

'Break down' is a phrasal verb with two main meanings: (1) a machine stops working, or (2) a person loses emotional control and cries. Example: 'The car broke down on the highway.'

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Journalism / Mass Communication QUESTION #6366

Question 10

The first Indian sound film, Alam Ara (1931), directed by Ardeshir Irani, was significant for multiple reasons. Which of the following is the MOST historically accurate statement about this film?

It was the first film shot in colour in the Indian subcontinent
It was the first Indian film with a soundtrack, released on March 14, 1931, and contained seven songs✔️
It was the first film produced in Pakistan after independence
It was the first silent film produced in the subcontinent

Correct Answer Logic:

Alam Ara (1931), directed by Ardeshir Irani for Imperial Film Company, holds the distinction of being India's first talkie film (a film with a recorded sound track). It was released on 14 March 1931 at Bombay's Majestic Cinema. The film was 10,500 feet long, ran for seven weeks, contained seven songs, and was a romantic costume drama. Its success proved that there was a huge market for “talkies and musicals,” and the entire film industry quickly switched to sound production. Note: Ardeshir Irani also directed Kisan Kanya (1937), which was the first colour film (Option A is therefore incorrect). The first silent feature film of the subcontinent was Raja Harishchandra (1913) by Dadasaheb Phalke. The first Pakistani film after independence was Teri Yaad (1948).

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General Knowledge QUESTION #9021

Question 11

The famous Khyber Pass links Peshawar with which Afghan city?

Quetta
Kandahar
Kabul✔️
Chaman

Correct Answer Logic:

The Khyber Pass connects Peshawar to Kabul.

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Physics QUESTION #7005

Question 12

A satellite orbits at height $h$ from Earth's surface where $h \ll R$ ($R$ = Earth's radius). The minimum increase in speed for the satellite to escape Earth's gravitational field is:

$\sqrt{2gR}$
$\sqrt{gR}$
$\sqrt{\dfrac{gR}{2}}$
$\sqrt{gR}\,(\sqrt{2}-1)$✔️

Correct Answer Logic:

For $h \ll R$, orbital radius $\approx R$:

Orbital speed: $v_o = \sqrt{gR}$

Escape speed from surface (approximately same radius): $v_e = \sqrt{2gR}$

Minimum increase: $\Delta v = v_e - v_o = \sqrt{2gR} - \sqrt{gR} = \sqrt{gR}(\sqrt{2}-1)$

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CISA QUESTION #1757

Question 13

Which category of BPR risks is most likely to emerge during the design phase?

Transition risk, skill risk, financial risk
Management risk, technical risk, HR risk
Technical risk, detection risk, audit risk
Scope risk, skill risk, political risk✔️

Correct Answer Logic:

The primary risks during the BPR design phase are improper scope definition, lack of required skills, political resistance from stakeholders, and insufficient management support — collectively categorized as scope risk, skill risk, and political risk.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3204

Question 14

Where does the majority of glucose and amino acid reabsorption occur in the nephron?

Proximal Convoluted Tubule (PCT)✔️
Loop of Henle
Distal Convoluted Tubule
Collecting Duct

Correct Answer Logic:

Under normal conditions, $100\%$ of glucose is reabsorbed in the PCT.

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Dairy Food Science and Technology QUESTION #5936

Question 15

The purpose of 'aging' (tempering) cream at $8\text{–}13^{\circ}\text{C}$ before churning in butter production is to:

Increase the cream's water content
Promote partial crystallization of fat into stable polymorphic crystal forms ($\beta'$) to facilitate efficient churning and improve butter texture✔️
Lower the cream's viscosity for better separation
Allow lactose to ferment producing diacetyl

Correct Answer Logic:

Cream tempering involves temperature cycling to promote formation of stable $\beta'$ and $\beta$ polymorphic crystal forms of triglycerides. Properly crystallized fat churns efficiently and produces butter with good texture, spreadability, and body.

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