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Chemistry QUESTION #5563

The thiol (–SH) functional group is present in which amino acid?

Cystine
Cysteine✔️
Methionine
Cytosine

Correct Answer Logic:

Cysteine is an amino acid with the structure $HSCH_2CH(NH_2)COOH$ — it contains a free thiol (–SH) group. Cystine is formed by oxidative coupling of two cysteine molecules (disulphide bond, –S–S–). Methionine contains a thioether (–S–) group, not a free –SH. Cytosine is a nucleobase, not an amino acid.

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Pakistan Affairs QUESTION #616

Question 2982

How many seats are reserved for women in the National Assembly of Pakistan?

40
50
60✔️
None of these

Correct Answer Logic:

There are 60 seats reserved for women in the National Assembly .

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Physics and Math QUESTION #781

Question 2983

$\sinh^2 x + \cosh^2 x = ?$

$\cosh 2x$✔️
$\cosh x$
$\sinh 2x$
None

Correct Answer Logic:

Using hyperbolic identities: $\cosh^2 x + \sinh^2 x = \cosh 2x$.

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City and Regional Planning QUESTION #4957

Question 2984

What is the primary purpose of Building Codes?

To standardize architectural styles
To ensure safety and health standards✔️
To control property prices
To promote specific construction methods

Correct Answer Logic:

Building Codes establish minimum standards for construction, structural integrity, fire safety, sanitation, and accessibility to protect public health, safety, and welfare.

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English QUESTION #2795

Question 2985

Choose the word that BEST COMPLETES the sentence: 'He spoke so ___ that nobody could hear him.'

loud
loudly✔️
louder
loudest

Correct Answer Logic:

An adverb is needed to modify the verb 'spoke'. 'Loudly' is the adverb form of 'loud' and correctly describes how he spoke.

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Pharmacology and Toxicology QUESTION #3854

Question 2986

Which co-administered drug poses the greatest risk of serotonin syndrome when combined with the reversible MAO-A inhibitor moclobemide?

Ranitidine
Nitrazepam
Sumatriptan✔️
Furosemide

Correct Answer Logic:

Sumatriptan is a serotonin agonist ($5\text{-HT}_{1\text{B}/1\text{D}}$). Combined with moclobemide, it can cause serotonin syndrome due to excessive serotonergic activity.

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General Knowledge QUESTION #4650

Question 2987

In your hostel mess, the vegetable curry has had stones for ten days. What will you do?

Buy your own vegetables and cook✔️
Leave consuming vegetables altogether
Speak with cook to change the vegetable
Bring the matter to notice of mess in-charge, then hostel administration

Correct Answer Logic:

3

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Security Measures to Maintain Law and Order QUESTION #861

Question 2988

If an officer witnesses a colleague using excessive force, their "Professional Duty" is to:

Help the colleague
Report the incident✔️
Stay silent
Resign

Correct Answer Logic:

Professional conduct and the Pakistan Army Act (applicable via 7-A) require reporting of illegal acts or misconduct.

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English QUESTION #672

Question 2989

Who is the author of "The Conquest of Happiness"?

Bertrand Russell✔️
Will Durant
Jean-Paul Sartre
Albert Camus

Correct Answer Logic:

In this 1930 book, Russell attempts to diagnose the causes of unhappiness and suggest a cure.

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Professional QUESTION #1863

Question 2990

Initial appointments to posts in BPS 1 to 15 shall be made on the recommendations of which body?

Federal Public Service Commission
Selection Board
Departmental Selection Committee after advertising vacancies✔️
Departmental Promotion Committee

Correct Answer Logic:

Rule 11 states initial appointments to posts in BPS 1 to 15 shall be made on the recommendations of the Departmental Selection Committee after the vacancies have been advertised in newspapers.

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Chemistry QUESTION #4348

Question 2991

In propene, the $\pi$-bond is formed by sideway overlap of:

s-orbitals
p-orbitals✔️
$sp^3$ hybrid orbitals
$sp^2$ hybrid orbitals

Correct Answer Logic:

In propene ($CH_3CH=CH_2$), the double bond carbons are $sp^2$ hybridized. The $\pi$-bond is formed by the lateral (sideway) overlap of unhybridized $p$-orbitals perpendicular to the molecular plane.

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Statistics QUESTION #1970

Question 2992

Which of the following actions is most effective in reducing sampling error?

Adopting non-probability sampling
Expanding the population size
Decreasing the sample size
Increasing the sample size✔️

Correct Answer Logic:

Sampling error decreases as sample size increases, because larger samples yield better parameter estimates. The standard error $SE = \dfrac{\sigma}{\sqrt{n}}$ decreases as $n$ increases.

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Library Sciences QUESTION #1527

Question 2993

The Internet Public Library (IPL) is best classified as which type of reference resource?

A subscription-based full-text database
A freely accessible, librarian-selected and organized web reference portal✔️
A government document repository
A union catalogue of academic libraries

Correct Answer Logic:

The Internet Public Library (IPL) is a freely accessible online reference resource where library professionals select, organize, and annotate quality web resources — functioning as a curated reference portal rather than a commercial database or government repository.

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Biology QUESTION #4329

Question 2994

Which of the following best describes 'acquired characteristics' according to Lamarckism?

Traits caused by mutation
Traits inherited from parents
Traits developed by use or disuse✔️
Traits selected by nature

Correct Answer Logic:

According to Lamarck, acquired characteristics are traits developed during an organism's lifetime through use or disuse of organs, and these are then passed to offspring.

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General Knowledge QUESTION #4486

Question 2995

In a new report, _____ urged leaders to halt obsession with fossil fuels.

Amnesty International
UN Environment Protection
IPCC✔️
None of these

Correct Answer Logic:

IPCC reports strongly warn against fossil fuel dependence.

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Urdu QUESTION #5041

Question 2996

ارسطو سے ایلیٹ تک کس کی کتاب ہے؟

ڈاکٹر جمیل جالبی
غفور شاہ
وحید قاضی✔️
ان میں سے کوئی نہیں

Correct Answer Logic:

'ارسطو سے ایلیٹ تک' وحید قاضی کی تنقیدی تصنیف ہے جو مغربی تنقید کا احاطہ کرتی ہے۔

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3193

Question 2997

'Peripheral Resistance' to blood flow is primarily determined by the diameter of:

Aorta
Veins
Arterioles✔️
Capillaries

Correct Answer Logic:

Arterioles are known as the 'resistance vessels' because they can significantly constrict or dilate.

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MCQs Section QUESTION #4890

Question 2998

Which word is opposite to "CONSCIENTIOUS"

Uncorrupt
Honourable
Principled
Profligate✔️

Correct Answer Logic:

Conscientious means wishing to do one's work thoroughly and carefully. Its antonym is Profligate, meaning recklessly wasteful and utterly lacking in moral principles.

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