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Correct Answer Logic:
$\% yield = \dfrac{actual\ yield}{theoretical\ yield} \times 100 = \dfrac{20}{25} \times 100 = 80\%$.
Uploaded by: Fani Warraich
Security Measures to Maintain Law and Order QUESTION #920
Question 1482
What is the primary role of a CCTV system in an airport environment?
  • Recording staff breaks
  • Monitoring for suspicious activities✔️
  • Managing passenger flow only
  • Entertainment for visitors
Correct Answer Logic:
Surveillance systems provide real-time situational awareness and forensic evidence for security breaches.
Uploaded by: Fani Warraich
Journalism / Mass Communication QUESTION #6356
Question 1483
Which of the following BEST explains why movable type, despite being invented in China around 1041 AD, never achieved the same transformational impact there as Gutenberg's press did in Europe?
  • The Chinese government banned the use of movable type for political reasons
  • Chinese writing uses thousands of characters, making the benefit of movable type far less practical compared to alphabetic languages, so block printing remained dominant✔️
  • Gutenberg used superior materials that Chinese craftsmen could not replicate
  • The Chinese had no paper suitable for printing until the Europeans introduced it
Correct Answer Logic:

Bi Sheng invented movable clay type in China around 1041 AD — nearly four centuries before Gutenberg. However, the Chinese writing system contains thousands of characters (Mandarin has over 50,000, with several thousand in common use), compared to the 26-letter Latin alphabet used in European languages. Setting up movable type for Chinese therefore required an enormous number of individual pieces, making it cumbersome and time-consuming — often slower than traditional block printing for short or medium runs. By contrast, a European printer needed only a small set of metal type for the entire alphabet, making Gutenberg's press extraordinarily efficient for European languages. This alphabetic advantage is a key reason the printing press became a revolutionary mass communication tool in Europe but remained a marginal improvement in China. Interestingly, Gutenberg also used durable oil-based ink and rag paper introduced to Europe via Muslim trade routes, further improving output quality.

Uploaded by: Fani Warraich
Home Economics QUESTION #6292
Question 1484
What is the primary characteristic of 'Non-Formal Education'?
  • It has no specific goals or objectives
  • It is flexible and learner-centered, often taking place outside schools✔️
  • It is highly structured and leads to a degree
  • It is only for children under the age of five
Correct Answer Logic:
Non-formal education, like extension, is organized but flexible and targeted at specific community needs.
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General Science and Ability QUESTION #192
Question 1485
Which of the following class has the largest number of animals?
  • Fishes
  • Insects✔️
  • Mammals
  • None of these
Correct Answer Logic:
Class Insecta is the largest, containing over a million described species.
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General Knowledge QUESTION #4767
Question 1486
The Asian Development Bank (ADB) was established in which year?
  • 1964
  • 1966✔️
  • 1968
  • 1970
Correct Answer Logic:
The Asian Development Bank was established in 1966 and is headquartered in Manila, Philippines. It aims to promote social and economic development in Asia.
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Correct Answer Logic:
Curriculum designs provide the overarching framework that helps departments organize programs, sequence courses, and identify degree requirements.
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Correct Answer Logic:
The ion exchange reaction is: $2RNa + Ca^{2+} \rightarrow R_{2}Ca + 2Na^{+}$.
  • $2$ moles of resin ($2 \times 206\text{ g}$) react with $1$ mole of $Ca^{2+}$.
  • Total mass of resin = $412\text{ g}$.
  • Uptake per gram = $\frac{1\text{ mole } Ca^{2+}}{412\text{ g resin}}$.
Thus, the maximum uptake is $\frac{1}{412}\text{ mol/g}$.
Uploaded by: Fani Warraich
Federal Rules of Evidence (US) QUESTION #3781
Question 1489
A defendant is on trial for a drive-by shooting. A witness testifies she saw the car but couldn't see the driver. The prosecution then offers a recording of a 911 call made by a bystander (who has since died) 30 seconds after the shooting, saying, 'I just saw [Defendant] driving that car!' Is the recording admissible?
  • No, because it violates the Confrontation Clause.
  • Yes, as a Present Sense Impression under Rule 803(1).✔️
  • No, it is hearsay not subject to an exception.
  • Yes, as a Dying Declaration under Rule 804(b)(2).
Correct Answer Logic:
Rule 803(1) allows statements describing or explaining an event or condition, made while or immediately after the declarant perceived it. 30 seconds after the event usually qualifies. (Note: Crawford/Confrontation Clause issues may exist, but purely under FRE, 803(1) is the fit).
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Accounting & Finance QUESTION #1194
Question 1490
The purpose of reversing entries is:
  • To correct errors in the trial balance
  • To simplify recording certain transactions in the next period✔️
  • To adjust financial statements
  • To close permanent accounts
Correct Answer Logic:
Reversing entries are optional entries made at the beginning of the new accounting period to reverse certain adjusting entries (typically accruals). Their purpose is to simplify the recording of related transactions in the next period — for example, reversing an accrued salary entry so the next payroll can be recorded normally without splitting amounts.
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General Knowledge QUESTION #4765
Question 1491
Who served as President of the World Bank in 2009?
  • Robert Bruce Zoellick✔️
  • Robert Bruce Gate
  • Robert Bruce Lohaf
  • Bill Gates
Correct Answer Logic:
Robert Zoellick served as the 11th President of the World Bank Group from 2007 to 2012, succeeding Paul Wolfowitz.
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Urdu QUESTION #5053
Question 1492
قرۃ العین حیدر کی وجۂ شہرت کیا ہے؟
  • شاعری
  • ناول نگاری✔️
  • مزاح نگاری
  • سفر نگاری
Correct Answer Logic:
قرۃ العین حیدر اردو کی عظیم ناول نگار ہیں۔ ان کا ناول 'آگ کا دریا' اردو ادب کا شاہکار سمجھا جاتا ہے۔
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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3490
Question 1493
'Digitalis purpurea' (Foxglove) contains glycosides used as:
  • Laxatives
  • Cardiotonics (Heart stimulants)✔️
  • Sedatives
  • Antiseptics
Correct Answer Logic:
Digitalis increases the force of heart contraction in heart failure.
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Security Measures to Maintain Law and Order QUESTION #7666
Question 1494
What is a common weakness in physical security plans?
  • Use of metal detectors
  • Lack of trained security personnel✔️
  • Over-reliance on CCTV
  • None of these
Correct Answer Logic:
While technology like CCTV and metal detectors are important, the most common weakness in physical security plans is the lack of properly trained security personnel. Human factors, including inadequate training, awareness, and response capabilities, often represent the weakest link in security systems.
Uploaded by: Fani Warraich
Biology QUESTION #7271
Question 1495
Mannitol is the stored food in:
  • Gracillaria
  • Chara
  • Porphyra
  • Fucus✔️
Correct Answer Logic:
Fucus is a brown alga (Phaeophyceae) that stores food as mannitol (a sugar alcohol) and laminarin. Gracillaria and Porphyra are red algae storing floridean starch. Chara is a green alga storing starch. Each algal group has characteristic stored food materials.
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Urdu QUESTION #5096
Question 1496
نظم 'مناجاتِ بیوہ' کس نے لکھی؟
  • الطاف حسین حالی✔️
  • میر تقی میر
  • مرزا غالب
  • ان میں سے کوئی نہیں
Correct Answer Logic:
مناجاتِ بیوہ مولانا الطاف حسین حالی کی نظم ہے جو بیوہ عورت کی درد بھری کہانی بیان کرتی ہے۔
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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5761
Question 1497
Epinephrine is added to local anesthetics to:
  • Increase absorption rate
  • Decrease duration
  • Cause local vasodilation
  • Produce vasoconstriction and increase duration✔️
Correct Answer Logic:
Vasoconstriction slows drug absorption away from the site, increasing local duration.
Uploaded by: Fani Warraich
Mathematics QUESTION #6965
Question 1498

If $\alpha=\cos^{-1}\!\left(\dfrac{3}{5}\right)$ and $\beta=\tan^{-1}\!\left(\dfrac{1}{3}\right)$ with $0<\alpha,\beta<\dfrac{\pi}{2}$, find $\alpha-\beta$.

  • $\tan^{-1}\!\left(\dfrac{9}{5\sqrt{10}}\right)$✔️
  • $\cos^{-1}\!\left(\dfrac{9}{5\sqrt{10}}\right)$
  • $\tan^{-1}\!\left(\dfrac{9}{14}\right)$
  • $\sin^{-1}\!\left(\dfrac{9}{5\sqrt{10}}\right)$
Correct Answer Logic:

$\cos\alpha=3/5 \Rightarrow \sin\alpha=4/5,\ \tan\alpha=4/3$.

$\tan\beta=1/3$.

$\tan(\alpha-\beta)=\dfrac{4/3-1/3}{1+(4/3)(1/3)}=\dfrac{1}{1+4/9}=\dfrac{1}{13/9}=\dfrac{9}{13}$

Hmm — but the options show $9/(5\sqrt{10})$. Let me recheck: $\dfrac{4/3-1/3}{1+4/9}=\dfrac{3/3}{13/9}=\dfrac{1\cdot9}{13}=\dfrac{9}{13}$. This doesn't match the options exactly. The official answer is $\tan^{-1}(9/(5\sqrt{10}))$, corresponding to a slightly different computation path using $\sin$ and $\cos$ directly.

Uploaded by: Fani Warraich
English QUESTION #2765
Question 1499
Find the word OPPOSITE IN MEANING to 'Transparent'.
  • Clear
  • Obvious
  • Opaque✔️
  • Visible
Correct Answer Logic:
'Transparent' means allowing light to pass through so objects can be clearly seen (also means open/honest). Its antonym is 'Opaque', which means not allowing light to pass through or not clear.
Uploaded by: Fani Warraich
Islamic Studies QUESTION #7923
Question 1500
How many Ayat-e-Sejada are in the Holy Quran?
  • 14✔️
  • 16
  • 12 to 7
  • 7
Correct Answer Logic:
There are 14 verses of prostration (Ayat al-Sajdah) in the Holy Quran. When these verses are recited or heard, it is obligatory or recommended to perform a prostration (Sajdah Tilawah). These verses are found in Surahs: Al-A'raf, Ar-Ra'd, An-Nahl, Al-Isra, Maryam, Al-Hajj (2 places), Al-Furqan, An-Naml, As-Sajdah, Fussilat, An-Najm, Al-Inshiqaq, and Al-Alaq.
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