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'Smarter' is already a comparative adjective. Adding 'more' creates a double comparative, which is grammatically incorrect. It should be either 'smarter' or 'more smart'.

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General Science and Ability QUESTION #192

Question 3844

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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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3425

Question 3845

'Hydrogen Bonds' in DNA occur between:

Sugar and Phosphate
Nitrogenous bases✔️
Phosphate and Oxygen
Carbon atoms

Correct Answer Logic:

They hold the two strands of the double helix together.

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Professional QUESTION #1927

Question 3846

Under Rule 20(4) Cabinet meetings are presided over by the Prime Minister. In the Prime Minister's absence who presides and what is the status of decisions taken?

The most senior Federal Minister; decisions are final
A Minister nominated by the Prime Minister; decisions are subject to the PM's approval unless the Cabinet considers a case so urgent that immediate action may be taken in anticipation of PM's approval✔️
The Cabinet Secretary; decisions are provisional
The Deputy Prime Minister automatically; all decisions are immediately binding

Correct Answer Logic:

Rule 20(4) provides that in the absence of the Prime Minister a Minister nominated by the Prime Minister shall preside and decisions are subject to the PM's approval unless the Cabinet considers a case so urgent that immediate action may be taken in anticipation of PM's approval.

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Agronomy QUESTION #2024

Question 3847

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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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3532

Question 3848

A 'Carminative' is a drug that:

Relieves flatulence (gas) from the GI tract✔️
Cures cancer
Reduces fever
Causes vomiting

Correct Answer Logic:

Fennel, Cardamom, and Ginger are classic carminatives.

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Geography QUESTION #1243

Question 3849

The extent of open water over which wave-producing winds blow is called:

Fetch✔️
Wavelength
Period
None of these

Correct Answer Logic:

Fetch is the distance of open water over which wind blows in a consistent direction. The greater the fetch, the more energy is transferred from wind to water, producing larger waves. Wavelength is the distance between successive wave crests, and period is the time for successive waves to pass a fixed point.

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Statistics QUESTION #2004

Question 3850

Using the housework data where employed men spend an average $\mu = 8.2$ hours/week with $\sigma = 2.1$ hours (normal distribution), $P(X \geq 9)$ is found by computing $z$ as:

$z = 0.286$
$z = 0.381$✔️
$z = 0.476$
$z = 0.524$

Correct Answer Logic:

$z = \dfrac{9 - 8.2}{2.1} = \dfrac{0.8}{2.1} \approx 0.381$. Then $P(X \geq 9) = P(Z \geq 0.381) = 1 - \Phi(0.381) \approx 1 - 0.6484 = 0.3516$.

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Urdu QUESTION #5211

Question 3851

بین کرنا کس شاعری صنف کا جز ہے؟

مرثیہ✔️
رباعی
ان میں سے کوئی نہیں
قصیدہ

Correct Answer Logic:

بین کرنا مرثیے کی اصطلاح ہے جس میں میت پر نوحہ کناں ہونے کا بیان ہوتا ہے۔

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Mathematics QUESTION #1327

Question 3852

The exact value of $\int_1^3\dfrac{1}{x^2}\,dx$ is:

$\dfrac{1}{3}$
$\dfrac{2}{3}$✔️
$\dfrac{1}{9}$
$\dfrac{4}{3}$

Correct Answer Logic:

$\int_1^3\dfrac{1}{x^2}\,dx=\left[-\dfrac{1}{x}\right]_1^3=-\dfrac{1}{3}+1=\dfrac{2}{3}$. This is the exact value; the Trapezoidal Rule approximation approaches this as the step size decreases.

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Mechanical Engineering QUESTION #2504

Question 3853

The octahedral shear stress theory (von Mises criterion) for yielding states that yielding begins when:

$\sigma_{vm} = \sqrt{\sigma_1^2 + \sigma_2^2 + \sigma_3^2} \geq S_y$
$\sigma_{vm} = \sigma_1 - \sigma_3 \geq S_y$
$\sigma_{vm} = \frac{1}{\sqrt{2}}\sqrt{(\sigma_1-\sigma_2)^2+(\sigma_2-\sigma_3)^2+(\sigma_3-\sigma_1)^2} \geq S_y$✔️
$\sigma_{vm} = \frac{\sigma_1+\sigma_2+\sigma_3}{3} \geq S_y$

Correct Answer Logic:

The von Mises (distortion energy) criterion: $\sigma_{vm}=\frac{1}{\sqrt{2}}\sqrt{(\sigma_1-\sigma_2)^2+(\sigma_2-\sigma_3)^2+(\sigma_3-\sigma_1)^2}\geq S_y$.

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Commerce QUESTION #1207

Question 3854

A manufacturing company is considering whether to produce in-house or outsource production. Relevant costs for this decision include:

Fixed costs of the company.
Historical costs of production.
Direct variable costs and outsourcing costs.✔️
Total costs incurred in the prior year.

Correct Answer Logic:

In a make-or-buy (outsourcing) decision, only relevant (incremental/differential) costs matter. These include direct variable costs of in-house production and the cost of outsourcing. Fixed costs that remain unchanged regardless of the decision are irrelevant. Historical (sunk) costs are also irrelevant as they cannot be changed.

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Chemistry QUESTION #5527

Question 3855

The Taj Mahal is gradually losing its white colour and being disfigured. This deterioration is primarily attributed to:

Global warming
Acid rain✔️
Water pollution
Soil pollution

Correct Answer Logic:

The Taj Mahal, made of white marble (calcium carbonate, $CaCO_3$), is being corroded by acid rain. Sulphur dioxide ($SO_2$) and nitrogen oxides from nearby industries react with rainwater to form sulphuric and nitric acids. These acids react with $CaCO_3$ forming calcium sulphate ($CaSO_4$), causing yellowing and pitting — known as 'Marble Cancer'.

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