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Chemistry QUESTION #7507

Match Item I (compound) with the correct Item II (reagent/property):

Item I	Item II
(A) Acetaldehyde	(P) Tollen's reagent
(B) Benzaldehyde	(Q) Lucas reagent
(C) Cyclohexanol	(R) NaHSO$_3$
(D) Phenol	(S) FeCl$_3$

(A)→(P),(B)→(R),(C)→(Q),(D)→(S)✔️
(A)→(R),(B)→(P),(C)→(Q),(D)→(S)
(A)→(P),(B)→(Q),(C)→(R),(D)→(S)
(A)→(S),(B)→(P),(C)→(Q),(D)→(R)

Correct Answer Logic:

Matching logic:

Acetaldehyde (CH$_3$CHO): Aliphatic aldehyde — gives silver mirror with Tollen's reagent (P).
Benzaldehyde (PhCHO): Aromatic aldehyde — forms addition compound with NaHSO$_3$ (R) (bisulphite addition).
Cyclohexanol: Secondary alcohol — reacts with Lucas reagent (Q) (ZnCl$_2$/HCl) to form turbid chloride (within minutes).
Phenol: Gives characteristic violet colour with FeCl$_3$ (S).

Correct: (A)→(P), (B)→(R), (C)→(Q), (D)→(S)

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Physics QUESTION #7092

Question 3182

A body is projected at $10\text{ ms}^{-1}$ at $60^{\circ}$ to the horizontal. Calculate the radius of curvature at $t=1\text{ s}$ ($g=10\text{ ms}^{-2}$).

10.3 m
2.8 m✔️
2.5 m
5.1 m

Correct Answer Logic:

Radius of curvature $R = \frac{v^2}{a_{\perp}}$.

At $t=1$: $v_x = 10 \cos 60^{\circ} = 5$; $v_y = 10 \sin 60^{\circ} - 10(1) = 5\sqrt{3} - 10 \approx -1.34$.
Total $v = \sqrt{5^2 + (-1.34)^2} \approx 5.18$.
$a_{\perp} = g \cos \theta$ where $\theta$ is the angle of the velocity vector. After calculation, $R \approx 2.8\text{ m}$.

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Biology QUESTION #7271

Question 3183

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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Accounting & Finance QUESTION #6064

Question 3184

From the following data, calculate the value of purchases of raw materials:
Raw material consumed $= \text{Rs. }26{,}500$; Closing stock $= \text{Rs. }4{,}500$; Opening stock $= \text{Rs. }3{,}000$.

Rs. 26,500
Rs. 25,000
Rs. 28,000✔️
Rs. 34,000

Correct Answer Logic:

Using the raw material formula:

$\text{Purchases} = \text{Consumption} + \text{Closing Stock} - \text{Opening Stock}$

$= 26{,}500 + 4{,}500 - 3{,}000 = \mathbf{Rs.\ 28{,}000}$

Opening stock plus purchases minus closing stock equals consumption. Rearranging: Purchases $=$ Consumption $+$ Closing Stock $-$ Opening Stock.

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Ability / HR / Governance / Special Education QUESTION #1887

Question 3185

Which court's powers are conferred on an Inquiry Officer/Committee under Rule 7(1) of GS E&D Rules 1973?

Sessions Court under CrPC 1898
Civil Court trying a suit under Code of Civil Procedure 1908✔️
High Court under its original jurisdiction
Special Tribunal under NAB Ordinance

Correct Answer Logic:

Rule 7(1) specifically grants Inquiry Officers/Committees the powers of a civil court trying a suit under the Code of Civil Procedure 1908 (Act V of 1908).

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3673

Question 3186

Which drug is an 'Expectorant' (helps clear mucus)?

Senna
Vasaka (Adhatoda)✔️
Aloe
Castor oil

Correct Answer Logic:

Vasaka is a traditional remedy for bronchitis and cough.

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Islamic Studies QUESTION #207

Question 3187

Which is the year of the blessed birth of Prophet Muhammad (ﷺ)?

570 or 571 CE✔️
575 or 576 CE
590 or 591 CE
595 or 596 CE

Correct Answer Logic:

The Prophet (ﷺ) was born in the "Year of the Elephant," approx. 570/571 CE.

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General Abilities QUESTION #4606

Question 3188

Expand: $(x - 3)^2$

$x^2 - 9$
$x^2 + 9$
$x^2 - 6x + 9$✔️
$x^2 - 3x - 9$

Correct Answer Logic:

Using $(a-b)^2 = a^2 - 2ab + b^2$: $(x-3)^2 = x^2 - 6x + 9$

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Mathematics QUESTION #7438

Question 3189

The sum of first 20 terms of the sequence 0.7, 0.77, 0.777, … is:

$\frac{7}{81}(179-10^{-20})$
$\frac{7}{9}(99-10^{-20})$
$\frac{7}{81}(179+10^{-20})$✔️
$\frac{7}{9}(99+10^{-20})$

Correct Answer Logic:

Each term can be written as $0.7, 0.77, 0.777, \ldots = \frac{7}{9}(0.9, 0.99, 0.999, \ldots) = \frac{7}{9}(1-10^{-1}, 1-10^{-2}, 1-10^{-3}, \ldots)$. The sum of first 20 terms is $S = \frac{7}{9}\sum_{k=1}^{20}(1-10^{-k}) = \frac{7}{9}\left[20 - \sum_{k=1}^{20}10^{-k}\right] = \frac{7}{9}\left[20 - \frac{0.1(1-10^{-20})}{1-0.1}\right] = \frac{7}{9}\left[20 - \frac{1-10^{-20}}{9}\right] = \frac{7}{9} \cdot \frac{180 - 1 + 10^{-20}}{9} = \frac{7}{81}(179 + 10^{-20})$.

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Accounting & Finance QUESTION #6119

Question 3190

Data: Average inventory $15,000; Rate of inventory turnover 8 times; Mark-up 25%. What is the business's revenue (sales)?

$144,000
$150,000✔️
$160,000
$210,000

Correct Answer Logic:

Option B ($150,000) is correct.

COGS = 8 × $15,000 = $120,000

Mark-up 25%: Revenue = $120,000 × 1.25 = $150,000

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Law QUESTION #9510

Question 3191

A judgment is pronounced by the trial Court on 1 March 2023. The formal decree is drawn up and signed on 15 April 2023. An appeal is filed on 25 March 2023, i.e., after judgment but before the formal decree. The respondent contends the appeal is premature and incompetent. Is this objection valid?

No; the appellate Court should wait until the formal decree is ready before hearing the appeal
No; under Section 96 CPC, an appeal lies from a decree, and the date of the decree is the date of the judgment; the formal decree, once drawn, relates back to the date of the judgment. An appeal filed after judgment but before formal drawing of the decree is valid✔️
Yes; an appeal can only be filed after the decree is formally drawn up and signed
Yes; limitation for appeal runs from the date the decree is signed

Correct Answer Logic:

Section 2(2) CPC defines a decree as a formal expression of adjudication. A decree relates to the judgment which precedes it. Under Order XX CPC, the decree follows from the judgment. Limitation for appeal runs from the date of decree (i.e., the date of judgment). An appeal filed after judgment is not premature even if the formal decree has not been drawn.

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Math Physics Chemistry Biology QUESTION #792

Question 3192

Which of the following is true?

$\text{Na}^+$ is smaller than $\text{Na}$✔️
$\text{Cl}^-$ is less than $\text{Cl}$
$\text{Na}^+$ is greater than $\text{Na}$
None

Correct Answer Logic:

When $\text{Na}$ loses an electron to form $\text{Na}^+$, the electron cloud shrinks due to increased nuclear charge per electron, making $\text{Na}^+$ smaller than $\text{Na}$.

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General Knowledge QUESTION #8955

Question 3193

The world-famous Madame Tussauds wax museum is situated in which city?

Paris
London✔️
Rome
New York

Correct Answer Logic:

The original Madame Tussauds is in London.

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Paper-I (Pharmaceutics II (Industrial and Quality Control) and Pharmaceutics III (Hospital and Community Pharmacy)) QUESTION #5738

Question 3194

A 'Consultant Pharmacy' practice differs from a 'Community Pharmacy' because it focuses more on:

Actual dispensing of drugs
Medication procedure review✔️
Surgical supplies
Retail sales of cosmetics

Correct Answer Logic:

Consultant pharmacy focuses on procedure review rather than dispensing.

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ETAG General Aptitude QUESTION #3768

Question 3195 (Select all that apply)

In the context of English grammar and logical reasoning, which of the following statements about 'Syllogisms' are correct?

A syllogism consists of two premises and a conclusion.✔️
The conclusion is derived from the premises.✔️
All premises must be objectively true for a syllogism to be valid.
If the premises are true and the logic is valid, the conclusion must be true.✔️

Correct Answer Logic:

Syllogisms depend on logical structure (validity) rather than objective truth of premises (truth). Option 3 is false.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3473

Question 3196

'Essential Amino Acids' are those that:

The body can make itself
Must be supplied by the diet✔️
Are not needed
Are only in meat

Correct Answer Logic:

There are 9 essential amino acids for humans.

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Physics QUESTION #384

Question 3197

For photons of energy greater than 1.02 MeV the probability of pair production occurrence __________ as the energy increases.

Increase✔️
Completely diminishes
Reduces to half
Remains unchanged

Correct Answer Logic:

Pair production probability increases with photon energy above threshold

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Pakistan Affairs QUESTION #609

Question 3198

In which war did Ahmad Khan Kharal fight against the British in Punjab?

1839
1885
1897
None of these✔️

Correct Answer Logic:

Ahmad Khan Kharal led the resistance during the War of Independence in 1857 .

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General Knowledge QUESTION #8764

Question 3199

What is the medical condition 'insomnia'?

Inability to sleep✔️
Colour blindness
Depression
None of the above

Correct Answer Logic:

Insomnia is difficulty sleeping.

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Therapeutics and Patient Care QUESTION #3883

Question 3200

For which drug class is laxative use most likely to be required as a routine preventative measure against a predictable adverse effect?

Piroxicam
Oxycodone✔️
Cefalexin
Dexamethasone

Correct Answer Logic:

Opioids including oxycodone cause constipation in virtually all patients by reducing GI motility and increasing sphincter tone. Prophylactic laxative therapy is standard practice.

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