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Chemistry QUESTION #1432

Potentiometric titration involves measurement of:

Current in the reaction
Volume at equivalence
Electrode potential as a function of titrant added✔️
None of these

Correct Answer Logic:

Potentiometric titration involves monitoring the electrode potential (voltage) of the solution as a function of the volume of titrant added. The equivalence point is identified by a sharp change (inflection point) in the potential-volume curve. It uses a reference electrode and an indicator electrode immersed in the analyte solution, and is particularly useful for coloured or turbid solutions.

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Mathematics QUESTION #975

Question 6262

The perpendicular distance of the line $\dfrac{x-1}{2}=\dfrac{y+2}{-1}=\dfrac{z+3}{2}$ from the point $P(2,-10,1)$ is:

6
$5\sqrt{2}$
$4\sqrt{3}$
$3\sqrt{5}$✔️

Correct Answer Logic:

Direction vector $\vec{d}=(2,-1,2)$. Point on line $A=(1,-2,-3)$. $\vec{AP}=(1,-8,4)$. $|\vec{AP}|^2=1+64+16=81$. $\vec{AP}\cdot\vec{d}=2+8+8=18$. $|\vec{d}|^2=9$. Distance$^2=81-\frac{324}{9}=81-36=45$. Distance$=\sqrt{45}=3\sqrt{5}$.

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Tourism & Hospitality Management QUESTION #1612

Question 6263

According to the Tourism and Hospitality Laws course, the 'Travel Agencies Act 1978 and Rules' primarily governs which aspect of the tourism industry in Pakistan?

The construction and renovation of hotels near tourist sites
The licensing, registration, conduct, and operational standards of travel agencies and tour operators doing business in Pakistan✔️
The environmental regulations for tourism in national parks
The employment terms of hotel staff under labor law

Correct Answer Logic:

The Travel Agencies Act 1978 (covered in Module 4 of the Tourism & Hospitality Laws course) establishes the legal framework for the registration, licensing, and operational regulation of travel agencies in Pakistan — forming part of the cluster of Pakistan-specific tourism legislation alongside the Hotel & Restaurant Act and the Tour Guiding Act.

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General Knowledge QUESTION #270

Question 6264

The Headquarters of African Union is situated in:

Ethiopia✔️
Niger
Nigeria
None of these

Correct Answer Logic:

The AU is headquartered in Addis Ababa, Ethiopia.

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Chemistry QUESTION #7532

Question 6265

K$_2$HgI$_4$ is 40% ionized in aqueous solution. What is the van't Hoff factor ($i$)?

1.6
1.8✔️
2
2.2

Correct Answer Logic:

K$_2$HgI$_4$ dissociates as: $\text{K}_2\text{HgI}_4 \to 2\text{K}^+ + \text{HgI}_4^{2-}$ (3 particles total if fully ionized)

Degree of ionization $\alpha = 0.40$, total particles per formula unit if fully ionized = 3.

$i = 1 + (n-1)\alpha = 1 + (3-1)(0.40) = 1 + 0.80 = \mathbf{1.80}$

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General Knowledge QUESTION #8875

Question 6266

The book 'Essays on the Life of Muhammad (PBUH)' was written by:

Sir Syed Ahmed Khan✔️
Syed Amir Ali
Maulana Shibli Noumani
None of these

Correct Answer Logic:

Sir Syed Ahmed Khan wrote this work.

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Geography QUESTION #6295

Question 6267

Which of the following best explains the relationship between isostasy and mountain building in the context of plate tectonics?

Isostatic equilibrium prevents mountains from exceeding 8000m in height
Mountain roots extend deep into the mantle to maintain isostatic balance, with depth proportional to elevation✔️
Isostasy only applies to oceanic crust, not continental mountain ranges
Mountain building disrupts isostasy permanently until erosion occurs

Correct Answer Logic:

Isostasy describes the gravitational equilibrium between Earth's lithosphere and asthenosphere. Mountains have deep crustal roots (like icebergs) extending into the mantle to maintain balance - the Airy hypothesis of isostatic compensation. The greater the elevation, the deeper the root, maintaining equilibrium.

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Library Sciences QUESTION #1539

Question 6268

In library staffing, 'job analysis' is best defined as:

The process of advertising a vacant position
A systematic process of collecting information about the duties, responsibilities, skills, and context of a job✔️
A performance appraisal method
A technique for scheduling staff shifts

Correct Answer Logic:

Job analysis is a systematic process of gathering detailed information about a position — its tasks, responsibilities, required knowledge, skills, and working conditions. It forms the foundation for writing job descriptions, recruiting, training, and performance evaluation in library management.

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CISA QUESTION #1776

Question 6269

Fill in the blanks: The two primary audit test types are __________ and __________, using __________ sampling methods respectively.

Substantive tests; compliance tests; variable and attribute✔️
Compliance tests; substantive tests; variable and discovery
Predictive tests; compliance tests; stop-and-go and difference estimation
Integrity tests; compliance tests; stratified mean and unstratified mean

Correct Answer Logic:

The two main audit test types are substantive tests and compliance tests. Substantive testing uses variable sampling to verify the accuracy and integrity of transactions. Compliance testing uses attribute sampling to confirm the presence and consistent application of controls.

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Professional QUESTION #1829

Question 6270

According to Section 8(4), civil servants who are selected for promotion to a higher post in one batch shall, on promotion, retain their inter se seniority as in which post?

The post to which they are being promoted
The higher post effective from the date of notification
The lower post from which they were promoted✔️
The post determined by the Selection Board

Correct Answer Logic:

Section 8(4) provides that seniority in a post to which a civil servant is promoted takes effect from the date of regular appointment to that post. However, the proviso adds that civil servants selected for promotion in one batch shall retain their inter se seniority as in the lower post — meaning relative order among them is preserved from before promotion.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3219

Question 6271

Which hormone is responsible for the development of male secondary sex characteristics?

Progesterone
Aldosterone
Testosterone✔️
Prolactin

Correct Answer Logic:

Testosterone promotes muscle growth, voice deepening, and hair growth.

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Boilers Mechanical Engineering QUESTION #3996

Question 6272

Under the Ordinance, who is responsible for reporting an 'Accident' involving a boiler?

The local police
The owner or person in charge of the boiler✔️
The insurance company
The neighboring factory

Correct Answer Logic:

The owner must report accidents within 24 hours to the Chief Inspector.

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Accounting & Finance QUESTION #9641

Question 6273

From the Creditors Account: Opening Creditors Rs. 7,600; Cash Paid to Creditors Rs. 20,000; Discount Received Rs. 500; Returns Outward Rs. 2,400; Closing Creditors Rs. 9,500. What is the amount of Credit Purchases?

Rs. 24,800✔️
Rs. 24,300
Rs. 22,000
Rs. 26,400

Correct Answer Logic:

Credit Purchases = Closing Creditors + Cash Paid + Discount Received + Returns Outward – Opening Creditors = 9,500 + 20,000 + 500 + 2,400 – 7,600 = Rs. 24,800.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3478

Question 6274

Which of the following is considered an 'Organized' crude drug?

Castor oil
Opium latex
Cinchona bark✔️
Acacia mucilage

Correct Answer Logic:

Organized drugs possess a defined cellular structure (leaves, barks, roots), whereas unorganized drugs are secretions or extracts.

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Dairy Food Science and Technology QUESTION #5973

Question 6275

In spray drying, 'lecithin treatment' of the powder after drying is performed to produce:

Instantly soluble (instantized) powder with improved dispersibility in cold water✔️
A powder with higher fat content
A powder with reduced microbial count
A powder with lower $T_g$ for better flow

Correct Answer Logic:

Lecithin (phosphatidylcholine) is applied to agglomerated whole milk powder to make it 'instant' — rapidly dispersible and wettable in cold water. Lecithin's amphiphilic nature reduces the hydrophobic fat-rich surface tension, allowing water to penetrate powder granules quickly.

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Chemistry QUESTION #5525

Question 6276

Match the drugs with their correct pharmacological classification: (A) Norethindrone → ?, (B) Ofloxacin → ?, (C) Equanil → ?; Options: (P) Antibiotic, (Q) Anti-fertility, (R) Hypertension, (S) Analgesic

$(A)\to(Q);\ (B)\to(R);\ (C)\to(S)$
$(A)\to(Q);\ (B)\to(P);\ (C)\to(R)$✔️
$(A)\to(R);\ (B)\to(P);\ (C)\to(S)$
$(A)\to(R);\ (B)\to(P);\ (C)\to(R)$

Correct Answer Logic:

Norethindrone is a synthetic progesterone used as an anti-fertility (contraceptive) drug → (Q). Ofloxacin is a fluoroquinolone antibiotic → (P). Equanil (meprobamate) is a tranquilizer used to control anxiety and hypertension → (R). Correct match: $A \to Q,\ B \to P,\ C \to R$.

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