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General Science and Ability QUESTION #256

Question 5121

Which contains a greater number of carbon atoms in one mole?

Chloroform
Methanol
Water
Ethanol✔️

Correct Answer Logic:

Ethanol (C2H5OH) has 2 carbon atoms per molecule, more than Chloroform (CHCl3) or Methanol (CH3OH).+1

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Professional QUESTION #1909

Question 5122

Under Rule 2(1)(xviii) the term 'Secretary' includes which of the following officers when there is no Secretary in charge of a Division?

Deputy Secretary
Section Officer
Additional Secretary Senior Joint Secretary or Joint Secretary in charge of the Division or Ministry✔️
Under Secretary

Correct Answer Logic:

Rule 2(1)(xviii) states that where there is no Secretary the term Secretary means the Additional Secretary Senior Joint Secretary or Joint Secretary in charge of the Division or Ministry.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3663

Question 5123

'Latex' is a milky fluid found in special cells called:

Vessels
Laticifers✔️
Tracheids
Parenchyma

Correct Answer Logic:

Opium and Rubber are obtained from latex.

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Physics QUESTION #1180

Question 5124

The ratio between the angular momentum and orbital magnetic moment vector of the first orbital electron of hydrogen atom is known as:

Total Magnetic Moment
Bohr Magneton✔️
Magnetic Moment
None of these

Correct Answer Logic:

The ratio of the orbital magnetic moment to the orbital angular momentum is the gyromagnetic ratio: $\frac{\mu_L}{L} = \frac{e}{2m_e}$. The quantum of magnetic moment defined this way is the Bohr magneton: $\mu_B = \frac{e\hbar}{2m_e} = 9.274 \times 10^{-24}\ \text{J/T}$. It is the natural unit of atomic magnetic dipole moments.

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Contracts QUESTION #5846

Question 5125

A Seller sends a letter offering to sell 500 chairs at $50 each, stating 'This offer will remain open for 60 days.' 30 days later, the Seller revokes. Can the Buyer still accept?

No, because there was no consideration for the promise to keep the offer open.
Yes, because this is a 'Firm Offer' by a merchant.✔️
No, unless the Buyer already started performance.
Yes, because all UCC offers are irrevocable for 90 days.

Correct Answer Logic:

Under UCC §2-205, a signed writing by a merchant promising to keep an offer open is irrevocable for the time stated (not to exceed 3 months) even without consideration.

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Pakistan Affairs QUESTION #605

Question 5126

When was the separate electorate demanded for the first time by the Muslims in British India?

During Shimla deputation✔️
During Shimla conference
During Shimla agreement
None of these

Correct Answer Logic:

The demand was formally presented by the Simla Deputation in 1906 .

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Pharmacology and Toxicology QUESTION #3852

Question 5127

Sodium polystyrene sulfonate functions as a cation exchange resin. Which ion does it exchange in place of sodium?

Potassium✔️
Phosphorus
Calcium
Chloride

Correct Answer Logic:

Sodium polystyrene sulfonate releases sodium ions and binds potassium in the gut, making it useful in hyperkalaemia.

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Mathematics QUESTION #6042

Question 5128

Find the circle passing through the foci of the ellipse $\dfrac{x^2}{16}+\dfrac{y^2}{9}=1$ and having its centre at $(0,3)$.

$x^2+y^2-6y-7=0$✔️
$x^2+y^2-6y+7=0$
$x^2+y^2-6y-5=0$
$x^2+y^2-6y+5=0$

Correct Answer Logic:

For the ellipse $\frac{x^2}{16}+\frac{y^2}{9}=1$: $a^2=16, b^2=9$, so $c^2=16-9=7$, giving foci at $(\pm\sqrt{7},0)$.

The circle has centre $(0,3)$. Radius $r=$ distance from $(0,3)$ to $(\sqrt{7},0)$:

$r^2=(\sqrt{7}-0)^2+(0-3)^2=7+9=16\Rightarrow r=4$

Equation: $x^2+(y-3)^2=16\Rightarrow x^2+y^2-6y+9=16\Rightarrow x^2+y^2-6y-7=0$

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Commerce QUESTION #6126

Question 5129

Budgeted data for June (no opening inventory): Units produced 5,000; Units sold 4,000; Sales $180,000; Direct materials & labour $130,000; Variable overheads $15,000; Fixed overheads $25,000. What is the budgeted profit using marginal costing?

$10,000✔️
$36,000
$39,000
$44,000

Correct Answer Logic:

Option A ($10,000) is correct.

Variable cost per unit = ($130,000 + $15,000) ÷ 5,000 = $29

Variable cost of sales (4,000 units) = $116,000

Contribution = $180,000 − $116,000 = $64,000

Profit = $64,000 − $25,000 (fixed overheads) − $29,000 (closing inventory adjustment) = $10,000

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Security Measures to Maintain Law and Order QUESTION #902

Question 5130

What is the primary law and order objective of "Curbside Management" at an airport?

Revenue collection
Preventing unattended vehicles✔️
Parking facilitation
Passenger comfort

Correct Answer Logic:

From a security perspective, curbside management prevents VBIEDs (Vehicle Borne IEDs) and ensures clear access for emergency responses.

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Physics QUESTION #758

Question 5131

A bullet is fired with an angle of 30° with velocity of 196 ms⁻¹. For how much time will the bullet remain in space?

10 s
30 s
20 s✔️
40 s

Correct Answer Logic:

Time of flight T = 2u sinθ/g = 2x196xsin30°/9.8 = 2x196x0.5/9.8 = 196/9.8 = 20 s.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3049

Question 5132

What is the correction for 'Eutectic Mixtures' in powders?

Adding an adsorbent like magnesium carbonate✔️
Adding water
Heating the mixture
Sifting

Correct Answer Logic:

Adsorbents prevent the liquefied mixture from turning the whole powder damp.

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Security Measures to Maintain Law and Order QUESTION #879

Question 5133

"Interoperability" in emergency response means:

Using the same guns
Ability of different agencies to communicate✔️
Working only on weekends
Hiring international staff

Correct Answer Logic:

Maintaining order requires ASF, Fire Services, and Police to have compatible radio frequencies and protocols.

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Physics QUESTION #1049

Question 5134

Two gases A and B in cylinders with pistons of radius $r_A$ and $r_B$. Equal heat at constant pressure. Pistons move 16 cm and 9 cm. Internal energy change same. Ratio $r_A/r_B$ is:

$\dfrac{2}{\sqrt{3}}$
$\dfrac{\sqrt{3}}{2}$
$\dfrac{4}{3}$✔️
$\dfrac{3}{4}$

Correct Answer Logic:

At constant pressure: $Q = \Delta U + W$. Same $\Delta U$ and same Q: so $W_A=W_B$. Work done $=p\cdot\pi r^2\cdot d$. So $\pi r_A^2\cdot16 = \pi r_B^2\cdot9\Rightarrow\frac{r_A^2}{r_B^2}=\frac{9}{16}\Rightarrow\frac{r_A}{r_B}=\frac{3}{4}$.

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Math (Module-1) QUESTION #5476

Question 5135

The expression $4x^2 + bx - 45$, where $b$ is a constant, can be rewritten as $(hx + k)(x + j)$, where $h, k, j$ are integers. Which of the following must be an integer?

$\frac{b}{h}$
$\frac{b}{k}$
$\frac{45}{h}$
$\frac{45}{k}$✔️

Correct Answer Logic:

Expanding $(hx+k)(x+j) = hx^2 + (hj+k)x + kj$. Thus $h=4$ and $kj=-45$. Since $k, j$ are integers, $k$ is a factor of $45$, so $\frac{45}{k}$ is an integer.

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Urdu QUESTION #5063

Question 5136

مرزا غالب کو کس نام سے پکارا جاتا تھا؟

مرزا خان
مرزا نوشہ✔️
مرزا بادشاہ
مرزا جان

Correct Answer Logic:

مرزا غالب کا عرفی نام 'مرزا نوشہ' تھا۔ ان کا اصل نام اسداللہ خان تھا اور غالب تخلص تھا۔

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Urdu QUESTION #5106

Question 5137

پیدا اٹھانا کا کیا مطلب ہے؟

مشکل کام سے بھاگنا
کسی مشکل کام کو سر انجام دینے کا ذمہ✔️
مصیبت میں کام آنا
ان میں سے کوئی نہیں

Correct Answer Logic:

پیدا اٹھانا محاورے کا مطلب ہے کسی مشکل کام کی ذمہ داری قبول کرنا۔

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Agronomy QUESTION #2024

Question 5138

DAP (Di-Ammonium Phosphate) has the chemical formula $(NH_4)_2HPO_4$ and its N:P₂O₅ analysis is:

46:0
18:46✔️
16:48
14:48

Correct Answer Logic:

DAP contains approximately 18% N and 46% $P_2O_5$, making it one of the most concentrated phosphatic fertilizers. Its high nutrient content (64% total nutrients) makes it highly cost-effective for basal application, particularly for phosphorus supply in cereal and oilseed crops.

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Chemistry QUESTION #5538

Question 5139

An exothermic reaction $X \to Y$ has an activation energy of $30\ \text{kJ mol}^{-1}$ and energy change $\Delta E = -20\ \text{kJ mol}^{-1}$. What is the activation energy (in kJ) for the reverse reaction $Y \to X$?

50✔️
10
20
30

Correct Answer Logic:

For an exothermic reaction: $E_{a(\text{forward})} = 30\ \text{kJ mol}^{-1}$, $\Delta E = -20\ \text{kJ mol}^{-1}$. Using energy profile: $E_{a(\text{reverse})} = E_{a(\text{forward})} - \Delta E = 30 - (-20) = 30 + 20 = 50\ \text{kJ mol}^{-1}$. The reverse (endothermic) reaction has a higher activation energy.

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Boilers Mechanical Engineering QUESTION #4037

Question 5140

'Air Preheater' is located:

In the water tank
In the flue gas path after the economizer✔️
Inside the furnace
In the office

Correct Answer Logic:

It heats incoming combustion air, further improving efficiency.

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