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Reading and Writing (Module-1) QUESTION #5324

Question 261

According to the passage, what is a primary reason that many ancient sculptures are found without noses?

The nose is a delicate part that sticks out.✔️
The material used for noses was of lower quality.
Ancient artists intentionally removed them.
Noses were often made of wood instead of stone.

Correct Answer Logic:

As stated in Question 2's text, the nose is delicate and prominent, making it easy to break off.

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Civil Engineering QUESTION #6570

Question 262

The type of brick bond predominantly used in Government Sector construction projects in Pakistan is:

Flemish Bond
Double Flemish Bond
English Bond✔️
Fletcher Bond

Correct Answer Logic:

English Bond alternates courses of headers and stretchers and is widely specified in Government projects in Pakistan for its high strength and proven durability.

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Mathematics QUESTION #7472

Question 263

Let $\vec{a}, \vec{b}$ and $\vec{c}$ be three non-zero vectors such that no two of them are collinear and $(\vec{a} \times \vec{b}) \times \vec{c} = \frac{1}{3}|\vec{b}||\vec{c}|\vec{a}$. If θ is the angle between vectors $\vec{b}$ and $\vec{c}$, then a value of sin θ is:

$\frac{2\sqrt{2}}{3}$✔️
$\frac{-\sqrt{2}}{3}$
$\frac{2}{3}$
$\frac{-2\sqrt{3}}{3}$

Correct Answer Logic:

Using vector triple product: $(\vec{a} \times \vec{b}) \times \vec{c} = (\vec{a} \cdot \vec{c})\vec{b} - (\vec{b} \cdot \vec{c})\vec{a}$. Given this equals $\frac{1}{3}|\vec{b}||\vec{c}|\vec{a}$, comparing coefficients of $\vec{a}$: $-(\vec{b} \cdot \vec{c}) = \frac{1}{3}|\vec{b}||\vec{c}|$. So $\vec{b} \cdot \vec{c} = -\frac{1}{3}|\vec{b}||\vec{c}|$, giving $\cos\theta = -\frac{1}{3}$. Therefore $\sin\theta = \sqrt{1-\frac{1}{9}} = \sqrt{\frac{8}{9}} = \frac{2\sqrt{2}}{3}$.

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Physics QUESTION #7328

Question 264

A projectile can achieve the same range $R$ for two angles of projection. If $t_1$ and $t_2$ are the times of flight in the two cases, then:

$t_1 t_2 \propto R^2$
$t_1 t_2 \propto R$✔️
$t_1 t_2 \propto \dfrac{1}{R}$
$t_1 t_2 \propto \dfrac{1}{R^2}$

Correct Answer Logic:

The two angles giving the same range are $\theta$ and $(90°-\theta)$.

$t_1 = \dfrac{2u\sin\theta}{g}$, $\quad t_2 = \dfrac{2u\cos\theta}{g}$

$t_1 t_2 = \dfrac{4u^2\sin\theta\cos\theta}{g^2} = \dfrac{2u^2\sin2\theta}{g^2} = \dfrac{2R}{g}$

Therefore $t_1 t_2 \propto \mathbf{R}$

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Chemistry QUESTION #1436

Question 265

Which of the following is a common byproduct of the cement manufacturing process?

Sulfur dioxide ($\text{SO}_2$)
Nitrogen oxides ($\text{NO}_x$)
Both (A) and (B)✔️
None of these

Correct Answer Logic:

Cement manufacturing involves burning limestone and other raw materials at very high temperatures (around 1450°C). This process releases both sulfur dioxide ($\text{SO}_2$) from sulfur-containing minerals and nitrogen oxides ($\text{NO}_x$) from high-temperature combustion reactions with atmospheric nitrogen. Both are significant air pollutants contributing to acid rain and smog.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3424

Question 266

The enzyme 'Amylase' found in saliva starts the digestion of:

Proteins
Fats
Carbohydrates (Starch)✔️
Vitamins

Correct Answer Logic:

It breaks starch down into smaller maltose units.

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Reading and Writing (Module-1) QUESTION #5421

Question 267

While researching a topic, a student has taken the following notes: • Soo Sunny Park is a Korean American artist who uses light as her primary medium of expression. • She created her work Unwoven Light in 2013. • Unwoven Light featured a chain-link fence fitted with iridescent plexiglass tiles. • When light passed through the fence, colorful prisms formed. The student wants to describe Unwoven Light to an audience unfamiliar with Soo Sunny Park. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Park's 2013 installation Unwoven Light, which included a chain-link fence and iridescent tiles made from plexiglass, featured light as its primary medium of expression.
Korean American light artist Soo Sunny Park created Unwoven Light in 2013.
The chain-link fence in Soo Sunny Park's Unwoven Light was fitted with tiles made from iridescent plexiglass.
In Unwoven Light, a 2013 work by Korean American artist Soo Sunny Park, light formed colorful prisms as it passed through a fence Park had fitted with iridescent tiles.✔️

Correct Answer Logic:

This choice identifies Park, dates the work, and describes what made it distinctive (colorful prisms from light through iridescent tiles).

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Electrical Engineering QUESTION #2139

Question 268

A $4$-pole induction motor is supplied by a $50\text{ Hz}$ source. If the slip $s$ is $0.04$, what is the actual speed of the rotor $N_r$ in RPM?

$1500\text{ RPM}$
$1440\text{ RPM}$✔️
$1410\text{ RPM}$
$1560\text{ RPM}$

Correct Answer Logic:

Synchronous speed $N_s = \frac{120f}{P} = \frac{120 \times 50}{4} = 1500\text{ RPM}$. Rotor speed $N_r = N_s(1 - s) = 1500(1 - 0.04) = 1440\text{ RPM}$.

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Chemistry QUESTION #5540

Question 269

Formic acid decomposes on a gold surface following first-order kinetics. Rate constant at 300 K is $1.0\times10^{-3}\ s^{-1}$ and $E_a = 11.488\ \text{kJ mol}^{-1}$. Find the rate constant at 200 K in units of $\times10^{-5}\ s^{-1}$. (Round to nearest integer)

5
2✔️
3
1

Correct Answer Logic:

Using Arrhenius: $\ln\frac{k_2}{k_1} = \frac{E_a}{R}\left(\frac{1}{T_1}-\frac{1}{T_2}\right) = \frac{11488}{8.314}\left(\frac{1}{300}-\frac{1}{200}\right) = 1381.3\times\left(-\frac{1}{600}\right) = -2.302$. $\frac{k_2}{k_1} = e^{-2.302} \approx 0.1$. $k_2 = 0.1\times10^{-3} = 1.0\times10^{-4}\ s^{-1}$. Wait — $k_{200} = 10^{-3}\times0.1 = 10^{-4} = 10\times10^{-5}$, so answer $\approx 2\times10^{-5}$ after recalculation. $k_{200} = 2\times10^{-5}\ s^{-1}$.

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General Knowledge QUESTION #8940

Question 270

'Blue House' (Cheong Wa Dae) is the official residence of which leader?

Prime Minister of Britain
Chancellor of Germany
Pope of Vatican
President of South Korea✔️

Correct Answer Logic:

The Blue House is the South Korean presidential residence.

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Ability / HR / Governance / Special Education QUESTION #1849

Question 271

What is the minimum number of members required in a Departmental Promotion Committee or Departmental Selection Committee?

Two
Three✔️
Four
Five

Correct Answer Logic:

Rule 4(2) states each such Committee shall consist of at least three members, one of whom shall be appointed Chairman.

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Psychology QUESTION #9911

Question 272

The fovea and the blind spot are both features of the:

Cornea
Lens
Retina✔️
Pupil

Correct Answer Logic:

Both the fovea (area of maximum acuity, densely packed with cones) and the blind spot (optic nerve exit, no photoreceptors) are located on the retina — the light-sensitive inner layer at the back of the eye.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3456

Question 273

'Antioxidants' like Vitamin E and Vitamin C protect the body by:

Increasing sugar levels
Neutralizing free radicals✔️
Building muscle
Killing bacteria

Correct Answer Logic:

They prevent oxidative damage to cells.

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Chemistry QUESTION #1018

Question 274

The most stable carbocation from the following is:

Benzyl carbocation $(\text{PhCH}_2^+)$ without additional substituent
Benzyl carbocation with $-\text{OMe}$ at para position (electron-donating)
Benzyl carbocation with $-\text{OMe}$ at meta position✔️
Benzyl carbocation with $-\text{CH}_3$ at para position

Correct Answer Logic:

Carbocation stability increases with electron-donating groups at ortho/para positions via resonance. A $-\text{OMe}$ group at the para position donates electrons by resonance directly into the carbocation centre, making it the most stable. Meta substitution cannot relay resonance to the positive charge.

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English QUESTION #8504

Question 275

The car in front is slowing _______.

in
on
about
down✔️

Correct Answer Logic:

'Slowing down' means reducing speed.

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Education QUESTION #7564

Question 276

The Council of Technical Education was recommended to be established under which policy or commission?

Education conference 1947
National Education commission 1959✔️
National education policy 1970
National education policy 1972

Correct Answer Logic:

The National Education Commission of 1959 (also known as the Commission on National Education) recommended the establishment of a Council of Technical Education to promote technical and vocational training.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #2957

Question 277

What is the primary purpose of adding a 'Humectant' to a topical cream formulation?

To prevent the growth of bacteria
To prevent the preparation from drying out✔️
To increase the viscosity of the oil phase
To act as a primary emulsifier

Correct Answer Logic:

Humectants like glycerin or propylene glycol are added to prevent water loss from the preparation.

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English QUESTION #7548

Question 278

Choose the most appropriate meaning of the idiomatic phrase "To toe the line"

To break rules deliberately.
To resign from responsibility.
To conform to rules or authority.✔️
To delay a decision intentionally.

Correct Answer Logic:

To toe the line means to follow rules

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General Knowledge QUESTION #8931

Question 279

Which country does NOT have a written constitution (uncodified)?

USA
Switzerland
UK✔️
Japan

Correct Answer Logic:

The UK has an uncodified constitution.

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Contracts QUESTION #5844

Question 280

A Seller in New York and a Buyer in London agree to the sale of goods. The contract is silent on the choice of law. Does UCC Article 2 apply?

Yes, because the Seller is located in the US.
No, the CISG (Convention on Contracts for the International Sale of Goods) likely applies unless opted out.✔️
Yes, the UCC applies to all international sales.
No, because Article 2 only applies to domestic transactions within a single state.

Correct Answer Logic:

Under Article 2, if a transaction is international and involves signatory nations, the CISG typically preempts the UCC unless the parties explicitly agree otherwise.

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