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Chemistry QUESTION #7128
Question 3361
Which of the following reagent systems is specifically used to produce trans-alkenes from the reduction of alkynes?
  • $H_{2}$ with $Pd/C$ and $BaSO_{4}$
  • $NaBH_{4}$
  • $Na$ in liquid $NH_{3}$✔️
  • $Sn$ and $HCl$
Correct Answer Logic:
The reduction of non-terminal alkynes using sodium ($Na$) or lithium ($Li$) in liquid ammonia ($NH_3$) follows a free-radical mechanism that leads to the formation of the more stable trans-alkene (Birch reduction). Conversely, Lindlar's catalyst ($H_2, Pd/C, BaSO_4$) would yield a cis-alkene.
Uploaded by: Fani Warraich
Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3358
Question 3362
'Binary Fission' is the primary method of reproduction for:
  • Viruses
  • Bacteria✔️
  • Fungi
  • Humans
Correct Answer Logic:
A single cell splits into two identical daughter cells.
Uploaded by: Fani Warraich
Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3156
Question 3363
Which organ is most active in children for the 'T-cell' maturation and immune development?
  • Spleen
  • Thymus✔️
  • Tonsils
  • Appendix
Correct Answer Logic:
The thymus gland shrinks (atrophies) after puberty.
Uploaded by: Fani Warraich
Mathematics QUESTION #1321
Question 3364
The area enclosed between two curves \(y=f(x)\) and \(y=g(x)\) where \(f(x)\geq g(x)\) on \([a,b]\) is given by:
  • \(\int_a^b[f(x)+g(x)]\,dx\)
  • \(\int_a^b[f(x)-g(x)]\,dx\)✔️
  • \(\int_a^b[f(x)\cdot g(x)]\,dx\)
  • \(\dfrac{1}{2}\int_a^b[f(x)-g(x)]\,dx\)
Correct Answer Logic:
The area between two curves is the integral of the top curve minus the bottom curve: \(A=\int_a^b[f(x)-g(x)]\,dx\) where \(f(x)\geq g(x)\) on \([a,b]\). The limits \(a\) and \(b\) are the \(x\)-coordinates of the intersection points.
Uploaded by: Fani Warraich
General Knowledge QUESTION #8948
Question 3365
The world's largest number of newspapers are published in which country?
  • America
  • China
  • Russia
  • India✔️
Correct Answer Logic:
India publishes the most daily newspapers.
Uploaded by: Fani Warraich
Chemistry QUESTION #5522
Question 3366
Two water samples A and B have BOD (Biochemical Oxygen Demand) values of 10 and 20, respectively. Which statement is correct?
  • B is more polluted than A.✔️
  • A is fit for drinking, whereas B is not.
  • Both A and B are suitable for drinking.
  • A is more polluted than B.
Correct Answer Logic:
BOD (Biochemical Oxygen Demand) measures the amount of dissolved oxygen needed by microorganisms to decompose organic matter. A higher BOD means more organic pollution. Since BOD of B (20) > BOD of A (10), water B is more polluted. Note: For drinking water, BOD should be less than 5 ppm; both A and B are unsuitable for drinking.
Uploaded by: Fani Warraich
General Knowledge QUESTION #168
Question 3367
The concept of Ijma’a follows the principle of agreement by:
  • 51%
  • 66%
  • 100%
  • None of these✔️
Correct Answer Logic:
Traditionally, Ijma’a refers to the total consensus (unanimity) of Islamic scholars.
Uploaded by: Fani Warraich
General Ability and Fire Fighting QUESTION #5632
Question 3368
Which of the following describes a 'firebreak' as a firefighting technique?
  • A chemical barrier sprayed ahead of a fire
  • A physical gap created by clearing combustible material to stop fire spread✔️
  • A water curtain created by hoses
  • A foam barrier applied around a structure
Correct Answer Logic:
A firebreak is created by physically clearing or removing combustible material (trees
Uploaded by: Fani Warraich
Accounting & Finance QUESTION #6221
Question 3369
The 'Expectation Gap' often arises because the public confuses auditing with accounting. Which statement best distinguishes the two?
  • Auditing is done by directors; Accounting is done by Chartered Accountants
  • Accounting is the process of recording data; Auditing is the independent examination of that data✔️
  • Accounting provides an opinion; Auditing provides the facts
  • There is no distinction; they are the same activity
Correct Answer Logic:
Accounting is the systematic recording and reporting of financial info, while auditing is the concern with whether that info reflects a true and fair view.
Uploaded by: Fani Warraich
English QUESTION #8584
Question 3370
Which leader of Tamil Nadu died in 2016?
  • Jayalalithaa✔️
  • Binari
  • Sonubhai
  • Kaleeho
Correct Answer Logic:
Jayalalithaa died in December 2016.
Uploaded by: Fani Warraich
Physics QUESTION #7061
Question 3371
An ideal gas occupies $2 \text{ m}^3$ at a pressure of $3 \times 10^6 \text{ Pa}$. Determine the internal energy of the gas.
  • $9 \times 10^6 \text{ J}$✔️
  • $6 \times 10^4 \text{ J}$
  • $10^8 \text{ J}$
  • $3 \times 10^2 \text{ J}$
Correct Answer Logic:

Assuming the gas is monoatomic (as is standard in such problems unless specified otherwise), the internal energy $U$ is given by:

$U = \frac{3}{2} nRT = \frac{3}{2} PV$

$U = \frac{3}{2} \times (3 \times 10^6 \text{ Pa}) \times (2 \text{ m}^3)$

$U = 3 \times 3 \times 10^6 = 9 \times 10^6 \text{ J}$.

Uploaded by: Fani Warraich
Urdu QUESTION #5259
Question 3372
Idiom Through Thick and Thin کا درست مطلب:
  • ہر مشکل میں
  • اچھے برے وقت میں✔️
  • ہر حال میں
  • چھوٹی بڑی باتیں
Correct Answer Logic:
Through thick and thin کا مطلب ہے ہر اچھے اور برے وقت میں ساتھ دینا۔
Uploaded by: Fani Warraich
Correct Answer Logic:
مثنوی وہ نظم ہے جس میں ہر شعر کے دونوں مصرعے ہم قافیہ ہوں اور ہر شعر میں قافیہ بدل جائے۔
Uploaded by: Fani Warraich
Education QUESTION #6733
Question 3374
The concept of 'scaffolding' in instruction means:
  • Permanent support for all learners
  • Temporary support gradually removed as student competence increases✔️
  • Physical classroom structures
  • Rigid instructional sequences
Correct Answer Logic:
Scaffolding (Vygotsky) involves providing temporary support that's gradually withdrawn as learners develop independence. Like construction scaffolding, instructional scaffolds are temporary structures that enable learners to accomplish tasks beyond current independent capability, then are removed.
Uploaded by: Fani Warraich
English QUESTION #8479
Question 3375
Select the word OPPOSITE in meaning to: Ominous
  • Threatening
  • Promising✔️
  • Docile
  • Menacing
Correct Answer Logic:
Ominous means threatening or foreshadowing evil; opposite is promising.
Uploaded by: Fani Warraich
Education QUESTION #7590
Question 3376
Which assessment focuses on measuring what students can actually do rather than simply recall facts?
  • Performance-based assessment✔️
  • Objective test
  • Oral test
  • Short-answer test
Correct Answer Logic:
Performance-based assessment requires students to demonstrate skills through actual tasks or activities, showing application rather than just factual recall.
Uploaded by: Fani Warraich
Correct Answer Logic:

Let $Q=(4t, 2t^2)$ be a point on $x^2=8y$ (using parametrization $x=4t, y=2t^2$). $O=(0,0)$.

$P$ divides $OQ$ in ratio $1:3$: $P=\left(\frac{1\cdot4t+3\cdot0}{4},\frac{1\cdot2t^2+3\cdot0}{4}\right)=\left(t,\frac{t^2}{2}\right)$

Let $P=(h,k)$: $h=t$ and $k=\frac{t^2}{2}=\frac{h^2}{2}$

So $h^2=2k$, i.e., the locus is $x^2=2y$.

Uploaded by: Fani Warraich
General Abilities QUESTION #2806
Question 3378
Simplify: \(\dfrac{-18 \times 5 + (-3) \times (-4)}{-6}\)
  • 12
  • 13✔️
  • 13.5
  • 14
Correct Answer Logic:
\(-18 \times 5 = -90\) and \((-3) \times (-4) = +12\). So numerator \(= -90 + 12 = -78\). Then \(\dfrac{-78}{-6} = 13\).
Uploaded by: Fani Warraich
Political Science QUESTION #6685
Question 3379

Which institution is responsible for interpreting the Constitution in Pakistan?

  • Parliament
  • Supreme Court✔️
  • President
  • None of these
Correct Answer Logic:

The Supreme Court of Pakistan is the final arbiter and interpreter of the Constitution.

Uploaded by: Fani Warraich
Correct Answer Logic:
COGS = 10,000 + 155,000 – 15,000 = Rs. 150,000. Margin = 25%, so COGS = 75% of Sales. Sales = 150,000 × 100/75 = Rs. 200,000. The margin formula: Sales = COGS/(1 – Margin%) = 150,000/0.75.
Uploaded by: Fani Warraich