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Chemistry QUESTION #7511

3.12 g of oxygen is adsorbed on 1.2 g of platinum metal. Find the volume of oxygen adsorbed per gram of the adsorbent at 1 atm and 300 K.
$[R = 0.0821\ \text{L atm K}^{-1}\ \text{mol}^{-1}]$

2.00 L/g✔️
4.00 L/g
1.60 L/g
2.40 L/g

Correct Answer Logic:

Molar mass of O$_2 = 32\ \text{g/mol}$. Moles of O$_2 = \dfrac{3.12}{32} = 0.0975\ \text{mol}$

Total volume at 1 atm, 300 K: $V = \dfrac{nRT}{P} = \dfrac{0.0975 \times 0.0821 \times 300}{1} \approx 2.40\ \text{L}$

Volume per gram of adsorbent (Pt) $= \dfrac{2.40}{1.2} = \mathbf{2.00}\ \text{L g}^{-1}$

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General Abilities QUESTION #2854

Question 2602

The perimeter of a square is 64 m. Find its area.

256 m²✔️
128 m²
64 m²
512 m²

Correct Answer Logic:

Perimeter of square $= 4 \times \text{side}$. So side $= \dfrac{64}{4} = 16$ m. Area $= 16^2 = 256 \text{ m}^2$.

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Accounting & Finance QUESTION #6144

Question 2603

Lee and Mia share profits 4:3. Interest on drawings was omitted: Lee $90, Mia $50. By how much will Lee's current account balance decrease when corrected?

$10✔️
$30
$150
$170

Correct Answer Logic:

Option A ($10) is correct.

Total interest on drawings = $90 + $50 = $140 added to profit available.

Lee's extra profit share = $140 × 4/7 = $80

Net change to Lee's account = −$90 (interest charged) + $80 (extra profit) = −$10

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3428

Question 2604

Which of the following is a 'Heteropolysaccharide'?

Starch
Glycogen
Hyaluronic Acid✔️
Cellulose

Correct Answer Logic:

Heteropolysaccharides are made of more than one type of monosaccharide unit.

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General Knowledge QUESTION #8616

Question 2605

How long does light take to travel from the Sun to Earth?

2 minutes
4 minutes
$6\frac{1}{2}$ minutes
$8\frac{1}{2}$ minutes✔️

Correct Answer Logic:

Light takes about 8 minutes and 20 seconds to reach Earth.

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General Knowledge QUESTION #8766

Question 2606

'Zardak' is the highest peak of which mountain range?

Karakoram range
Sulaiman range✔️
Kirthar range
Hindukush range

Correct Answer Logic:

Zardak is the highest peak in the Sulaiman Range.

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Nursing QUESTION #9234

Question 2607

A Head Nurse notes that an ICU patient's Glasgow Coma Scale (GCS) score is as follows: opens eyes to pain ($E2$), makes incomprehensible sounds ($V2$), flexion withdrawal to pain ($M4$). What is the total GCS score and what does it indicate?

$\text{GCS} = 6$ — severe brain injury, immediate intubation required
$\text{GCS} = 7$ — severe brain injury, intubation strongly indicated
$\text{GCS} = 8$ — severe brain injury, intubation indicated (threshold $\leq 8$)✔️
$\text{GCS} = 9$ — moderate brain injury, close monitoring required

Correct Answer Logic:

Correct Answer: C — GCS = 8

GCS Calculation:
\[\text{GCS} = E + V + M = 2 + 2 + 4 = 8\]

GCS Scoring:

Domain	Response	Score
Eye (E)	Spontaneous	4
	To voice	3
	To pain	2
	None	1
Verbal (V)	Oriented	5
	Confused	4
	Inappropriate words	3
	Incomprehensible sounds	2
	None	1
Motor (M)	Obeys commands	6
	Localizes pain	5
	Withdrawal	4
	Flexion (Decorticate)	3
	Extension (Decerebrate)	2
	None	1

GCS $\leq 8$ = severe brain injury = airway protection threshold — intubation is indicated.

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General Knowledge QUESTION #2595

Question 2608

A document contains 2,048 bytes of data. How many bits does this document contain?

2,048 bits
4,096 bits
16,384 bits✔️
8,192 bits

Correct Answer Logic:

Since 1 byte = 8 bits: $2{,}048 \times 8 = 16{,}384$ bits. This conversion is essential when working with file sizes, network speeds (measured in bits per second), and storage capacities.

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Civil Engineering QUESTION #6624

Question 2609

A reinforced concrete beam is subjected to a factored moment $M_u$. If the beam is designed as 'tension-controlled' according to ACI 318, what is the minimum net tensile strain $\epsilon_t$ in the extreme tension steel at the nominal strength?

0.002
0.003
0.004
0.005✔️

Correct Answer Logic:

According to ACI 318, a section is tension-controlled if the net tensile strain in the extreme tension steel is equal to or greater than 0.005 when the concrete in compression reaches its assumed strain limit of 0.003.

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Math Physics Chemistry Biology QUESTION #817

Question 2610

The reactivity order of alkyl halides for a particular alkyl group is:

$\text{F} > \text{Cl} > \text{Br} > \text{I}$
$\text{I} > \text{Br} > \text{Cl} > \text{F}$✔️
$\text{Cl} > \text{Br} > \text{F} > \text{I}$
$\text{Br} > \text{I} > \text{Cl} > \text{F}$

Correct Answer Logic:

Reactivity of alkyl halides in nucleophilic substitution follows bond strength (C–X bond): C–I is weakest so iodide is most reactive. Order: $\text{I} > \text{Br} > \text{Cl} > \text{F}$.

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Therapeutics and Patient Care QUESTION #3873

Question 2611

Which laboratory measurement is the appropriate monitoring parameter to assess the anticoagulant effectiveness of enoxaparin?

Enoxaparin blood level
International Normalised Ratio (INR)
Platelet count
Antifactor Xa✔️

Correct Answer Logic:

Low-molecular-weight heparins such as enoxaparin are monitored via anti-factor Xa activity levels, as they do not reliably affect the INR or APTT.

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Planning QUESTION #4937

Question 2612

What is the main objective of Traffic Calming measures?

To increase vehicle speed
To reduce vehicle speeds and improve safety✔️
To eliminate pedestrian crossings
To maximize road capacity

Correct Answer Logic:

Traffic Calming uses physical design features (speed bumps, chicanes, raised crosswalks) to reduce vehicle speeds, enhance pedestrian safety, and improve quality of life in residential areas.

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English QUESTION #2791

Question 2613

Which is the CORRECTLY SPELLED word?

Recieve
Receive✔️
Recive
Recieeve

Correct Answer Logic:

The correct spelling is 'Receive'. Remember the rule: 'i before e, except after c'. After the letter 'c', we write 'ei' not 'ie'. So it's 'reCEIve', not 'recieve'.

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Islamic Studies QUESTION #8247

Question 2614

Which one of these is a Modni Surah?

Al-Namal
Al-Qasas
Al-Baqarah✔️
Al-Luqman

Correct Answer Logic:

Surah Al-Baqarah is a Madani Surah (revealed in Medina). Madani Surahs were revealed after the Hijrah and typically deal with legal, social, and community matters. Surah Al-Baqarah is the longest Surah with 286 verses and covers various topics including laws of marriage, divorce, inheritance, fasting, Hajj, and jihad. Al-Namal, Al-Qasas, and Al-Luqman are all Makki Surahs revealed in Makkah before the migration.

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The Elections Act 2017 QUESTION #9420

Question 2615

Section 39(1) creates a 'cut-off date' after which no electoral roll revision, correction or transfer may be made. This cut-off date is defined as:

Thirty days before the polling day
Thirty days before the day on which the term of an Assembly or local government is due to expire✔️
Sixty days before the Election Programme is announced
The date of issuance of the Election Programme

Correct Answer Logic:

Section 39(1) defines the cut-off date as 'thirty days before the day on which the term of an Assembly or a local government is due to expire'.

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Paper-I (Pharmaceutics II (Industrial and Quality Control) and Pharmaceutics III (Hospital and Community Pharmacy)) QUESTION #5701

Question 2616

In the storage of vaccines, the term 'Cold Chain' refers to maintaining a temperature between:

$-20^{\circ}C$ to $0^{\circ}C$
$2^{\circ}C$ to $8^{\circ}C$✔️
$15^{\circ}C$ to $25^{\circ}C$
$0^{\circ}C$ to $4^{\circ}C$

Correct Answer Logic:

Most vaccines require a cold chain maintenance of $2^{\circ}C$ to $8^{\circ}C$.

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Therapeutics and Patient Care QUESTION #3907

Question 2617

In which clinical condition should the dose of vancomycin be reduced to prevent drug accumulation and toxicity?

Pulmonary failure
Hepatic impairment
Heart failure
Renal impairment✔️

Correct Answer Logic:

Vancomycin is primarily renally excreted. In renal impairment, clearance is reduced, leading to drug accumulation, nephrotoxicity, and ototoxicity. Dose and/or frequency must be reduced.

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Islamic Studies QUESTION #7887

Question 2618

What is the Nisab of Zakat for gold?

5% Tola
6% Tola✔️
7½% Tola
8½% Tola

Correct Answer Logic:

The Nisab of Zakat for gold is 7½ Tola (approximately 87.48 grams or 3 ounces). When a person possesses gold equal to or more than this amount for one lunar year, Zakat becomes obligatory at the rate of 2.5%.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3285

Question 2619

Which method is considered the most reliable form of 'Moist Heat' sterilization?

Boiling water
Pasteurization
Autoclaving (Steam under pressure)✔️
Hot air oven

Correct Answer Logic:

Autoclaving at $121^\circ\text{C}$ for $15$ minutes is standard for killing resistant endospores.

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Chemistry QUESTION #7145

Question 2620

The first ionization potential of Sodium ($Na$) is $5.1\text{ eV}$. What is the estimated value for the electron gain enthalpy of the $Na^{+}$ ion?

$2.55\text{ eV}$
$5.1\text{ eV}$✔️
$10.2\text{ eV}$
$+ 2.55\text{ eV}$

Correct Answer Logic:

The process of ionization for Sodium is: $Na \rightarrow Na^{+} + e^{-}$. The energy required for this is the ionization potential ($5.1\text{ eV}$). The reverse process is: $Na^{+} + e^{-} \rightarrow Na$. The energy released in this reverse process is the electron gain enthalpy of $Na^{+}$, which is equal in magnitude but opposite in sign to the ionization potential. Therefore, the value is $5.1\text{ eV}$.

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