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Chemistry QUESTION #1004

The correct order of the following complexes in terms of their crystal field stabilization energies (CFSE) is:

$[\text{Co(NH}_3)_4]^{2+} < [\text{Co(NH}_3)_6]^{2+} < [\text{Co(en)}_3]^{3+} < [\text{Co(NH}_3)_6]^{3+}$
$[\text{Co(NH}_3)_6]^{2+} < [\text{Co(NH}_3)_6]^{3+} < [\text{Co(NH}_3)_4]^{2+} < [\text{Co(en)}_3]^{3+}$
$[\text{Co(en)}_3]^{3+} < [\text{Co(NH}_3)_6]^{3+} < [\text{Co(NH}_3)_6]^{2+} < [\text{Co(NH}_3)_4]^{2+}$
$[\text{Co(NH}_3)_4]^{2+} < [\text{Co(NH}_3)_6]^{2+} < [\text{Co(NH}_3)_6]^{3+} < [\text{Co(en)}_3]^{3+}$✔️

Correct Answer Logic:

CFSE depends on oxidation state and ligand field strength. $\text{Co}^{2+}$ complexes have lower CFSE than $\text{Co}^{3+}$. Among $\text{Co}^{3+}$: en (bidentate) produces a stronger field than $\text{NH}_3$ due to chelate effect. Tetrahedral $[\text{Co(NH}_3)_4]^{2+}$ has the lowest CFSE $(= 0.4\Delta_t)$. Order: $[\text{Co(NH}_3)_4]^{2+} < [\text{Co(NH}_3)_6]^{2+} < [\text{Co(NH}_3)_6]^{3+} < [\text{Co(en)}_3]^{3+}$.

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Others section QUESTION #4752

Question 1222

Former US Vice-President Al Gore was awarded the Nobel Peace Prize in 2007 for his campaign against which issue?

Child Labour
Human Rights Violations
Global Warming and Climate Change✔️
Nuclear Proliferation

Correct Answer Logic:

Al Gore, along with the Intergovernmental Panel on Climate Change (IPCC), won the 2007 Nobel Peace Prize for their work to raise global awareness of climate change and global warming.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3493

Question 1223

'Glycyrrhiza glabra' (Liquorice/Mulathi) is widely used in pharmacy as a/an:

Expectorant and Demulcent✔️
Potent poison
Blood thinner
Volatile oil

Correct Answer Logic:

Liquorice is used in cough syrups and for soothing sore throats.

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General Knowledge QUESTION #2585

Question 1224

An office worker is following a step-by-step checklist to process monthly invoices. This checklist is most similar to which computing concept?

Binary System
RGB Model
Algorithm✔️
Character Encoding

Correct Answer Logic:

An algorithm is a series of steps that solves specific problems. A step-by-step checklist for processing invoices is exactly analogous — it provides ordered instructions to reach a defined outcome, just as an algorithm does in computing.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3284

Question 1225

'Sterilization' is defined as the:

Reduction of microbial population to a safe level
Complete destruction of all forms of microbial life including spores✔️
Inhibition of bacterial growth
Removal of visible dirt

Correct Answer Logic:

Sterilization is an absolute term; an object is either sterile or it is not.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3344

Question 1226

'Tuberculin' test (Mantoux test) is an example of which hypersensitivity?

Type I
Type II
Type III
Type IV (Delayed)✔️

Correct Answer Logic:

It takes $48-72$ hours for a positive skin reaction to appear.

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Computer Science QUESTION #1146

Question 1227

What does the 'A' in ACID properties of a database stand for?

Availability
Atomicity✔️
Authentication
Accuracy

Correct Answer Logic:

Atomicity ensures that a transaction is treated as a single "unit," which either succeeds completely or fails completely.

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Psychology QUESTION #1468

Question 1228

In the Milgram obedience study, what percentage of participants administered the highest shock (450 volts) despite hearing the learner's protests?

25%
35%
50%
65%✔️

Correct Answer Logic:

In Stanley Milgram's landmark obedience experiments (1961–1963) at Yale University, approximately 65% (two-thirds) of participants administered the maximum 450-volt shock when instructed to do so by an authority figure, despite the apparent distress of the 'learner' (who was actually a confederate receiving no real shocks). This demonstrated the powerful influence of authority on obedient behaviour.

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English QUESTION #2745

Question 1229

Identify the ERROR in: 'She is more smarter than her sister.'

She
is
more
smarter✔️

Correct Answer Logic:

'Smarter' is already a comparative adjective. Adding 'more' creates a double comparative, which is grammatically incorrect. It should be either 'smarter' or 'more smart'.

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Verbal Reasoning QUESTION #66

Question 1230

For decades, economists believed that increased productivity would naturally lead to higher wages. However, recent studies indicate that while productivity has surged, wage growth has stagnated, suggesting that other structural factors — such as labor market policies, globalization, and technological automation — may be influencing income distribution.

Sub-Questions:

Question 1

Which of the following best expresses the main idea of the passage?

A) Productivity and wage growth are always directly proportional.
B) Wage stagnation is primarily caused by technological advancements.
C) Increased productivity no longer guarantees higher wages due to other influencing factors.✔️
D) Globalization is the sole reason for unequal income distribution.

Question 2

What does surged meaning in this paragraph?

Soar
Sudden✔️
Inclined
Unexpected

Correct Answer Logic:

The passage emphasizes that higher productivity no longer ensures wage increases because of other structural factors — exactly what option C states.

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Islamic Studies QUESTION #333

Question 1231

"Istishab" is a term used in which science?

Science of Tasawwuf
Science of Hadith
Science of Tafseer
Science of Fiqh✔️

Correct Answer Logic:

Istishab (Presumption of continuity) is a fundamental principle in Islamic Jurisprudence (Fiqh).

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General Science and Ability QUESTION #195

Question 1232

The amount of data transmitted for a given amount of time is called:

Noise
Bandwidth✔️
Frequency
None of these

Correct Answer Logic:

Bandwidth is the capacity of a wired or wireless network communications link.

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Urdu QUESTION #5180

Question 1233

'عکسِ خوشبو ہوں بکھرنے سے نہ روکے کوئی' یہ شعر کس کا ہے؟

میر تقی میر
پروین شاکر✔️
حسرت موہانی
ان میں سے کوئی نہیں

Correct Answer Logic:

یہ مشہور شعر پروین شاکر کا ہے جو اردو شاعری میں خوشبو کی علامت کے لیے مشہور ہیں۔

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Boilers Mechanical Engineering QUESTION #3984

Question 1234

'Priming' in a boiler refers to the phenomenon where:

The boiler is started for the first time
Water droplets are carried away with the steam into the pipes✔️
The fuel fails to ignite
The boiler pressure drops suddenly

Correct Answer Logic:

Priming can cause water hammer and damage to engines/turbines; it's often caused by high water levels or impurities.

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Computer Science QUESTION #1119

Question 1235

What is meant by refactoring code in SDLC?

To modify the functionality of software
To improve the code quality✔️
To find out bugs in a software
None of these

Correct Answer Logic:

Code refactoring is the process of restructuring existing computer code—changing the factoring—without changing its external behavior to improve non-functional attributes.

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Public Administration QUESTION #2916

Question 1236

In the context of administrative reform, "Devolution" specifically refers to:

Transfer of power to local levels✔️
Centralization of authority
Privatization of state assets
Reduction of the workforce

Correct Answer Logic:

Devolution is the statutory delegation of powers from the central government of a sovereign state to govern at a subnational level, such as a local government.

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Library Sciences QUESTION #1567

Question 1237

In IT-based library management, an 'OPAC' (Online Public Access Catalogue) represents an advancement over the traditional card catalogue primarily because it:

Displays books in their physical shelf order only
Allows users to search the collection by multiple access points simultaneously and view real-time availability✔️
Is maintained exclusively by the library director
Only works within the library building on dedicated terminals

Correct Answer Logic:

The OPAC replaced card catalogues by enabling multi-point simultaneous searching (by author, title, subject, keyword, ISBN, etc.) and displaying real-time item availability — functions impossible with static, single-entry card catalogues. Modern OPACs are also accessible remotely via the internet.

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Chemistry QUESTION #428

Question 1238

__________ extraction is controlled by partition law.

Iodine
Benzoic acid
Solvent✔️
Stationery

Correct Answer Logic:

Solvent extraction follows partition law

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Mechanical Engineering QUESTION #2377

Question 1239

For an integrating (I) control element with gain $K_I$, the transfer function is:

$Y(s) = K_I s$
$Y(s) = K_I / s$✔️
$Y(s) = K_I s^2$
$Y(s) = K_I$

Correct Answer Logic:

An integrating element: $\dot{x}_o(t)=K_I x_i(t)$, so $sX_o(s)=K_I X_i(s)$, giving $Y(s)=K_I/s$. Integration in time corresponds to division by $s$ in the Laplace domain.

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Security Measures to Maintain Law and Order QUESTION #925

Question 1240

What is the purpose of a perimeter security fence at an aerodrome?

To mark the property line
To prevent unauthorized incursions✔️
To block the wind
To provide aesthetic value

Correct Answer Logic:

Perimeters act as the first line of defense to keep unauthorized people and animals away from aircraft.

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