Reading Mode - Questions

Reading and Writing (Module-1) QUESTION #5377

While researching a topic, a student has taken the following notes: A lever is a simple machine consisting of a rigid beam and a fulcrum. The fulcrum is the point about which the beam pivots. In first-class levers, the fulcrum is located between the effort and the load. In second-class levers, the load is located between the effort and the fulcrum. The student wants to contrast first-class levers and second-class levers. Which choice most effectively uses relevant information from the notes to accomplish this goal?

In levers, the effort is the force applied to the lever; the load, in contrast, is the force that the lever exerts on another object.
In first-class and second-class levers, the fulcrum and the load are in different locations.
First-class levers are simple machines consisting of a rigid beam and a fulcrum, but then again, the same is true of second-class levers.
In first-class levers, the fulcrum is located between the effort and the load, but in second-class levers, the load is located between the effort and the fulcrum.✔️

Correct Answer Logic:

Option D clearly states the physical difference between the two types of levers, providing a complete contrast.

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Mathematics QUESTION #4165

Question 82

Using Green's theorem, $\oint_C \vec{F} \cdot d\vec{r} = \iint_R \left(\frac{\partial Q}{\partial x} - \frac{\partial P}{\partial y}\right) dA$ where $\vec{F} = [\frac{1}{2}xy^4, \frac{1}{2}x^4y]$. For the rectangle $[0,3] \times [0,2]$, what is the value?

$6$
$12$
$18$✔️
$36$

Correct Answer Logic:

$\frac{\partial Q}{\partial x} = 2x^3y$, $\frac{\partial P}{\partial y} = 2xy^3$. So $\iint_R (2x^3y - 2xy^3) dA = \int_0^3\int_0^2 (2x^3y - 2xy^3) dy dx = 18$.

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Urdu QUESTION #5095

Question 83

علی وجودی، طور معنی، کلامِ جنوبی وغیرہ کس تاریخی ناول کے معروف کردار ہیں؟

امربیل
فردوسِ بریں✔️
راجہ گدھ
ان میں سے کوئی نہیں

Correct Answer Logic:

یہ کردار عبدالحلیم شرر کے تاریخی ناول 'فردوسِ بریں' سے ہیں۔

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Geography QUESTION #1242

Question 84

There are no glaciers in:

Australia✔️
Asia
Europe
None of these

Correct Answer Logic:

Australia is the only continent with no glaciers (excluding Antarctica). It is located predominantly in tropical and temperate latitudes and lacks the high-altitude mountain ranges necessary to sustain permanent glaciers. Asia (Himalayas, Karakoram), Europe (Alps, Scandinavia), and all other continents have glaciers.

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Chemistry QUESTION #1075

Question 85

The oxidation states of the underlined elements in $\underline{\text{K}}\text{O}_2$, $\text{H}_2\underline{\text{O}}_2$ and $\text{H}_2\underline{\text{S}}\text{O}_4$ are respectively:

$+1, -2,$ and $+4$
$+4, -4,$ and $+6$
$+1, -1,$ and $+6$✔️
$+2, -2,$ and $+6$

Correct Answer Logic:

In KO$_2$ (potassium superoxide): K is +1, O$_2^-$ so O is $-\frac{1}{2}$... but underlined is K: $+1$. In H$_2$O$_2$: underlined O has oxidation state $-1$. In H$_2$SO$_4$: underlined S has oxidation state $+6$. So the answer is $+1, -1, +6$.

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Psychology QUESTION #1472

Question 86

Which model of stress focuses on how an individual appraises a situation as stressful based on their perceived ability to cope?

The Transactional Model of Stress✔️
The General Adaptation Syndrome (GAS)
The Social Readjustment Rating Scale (SRRS)
The Cognitive-Behavioral Model

Correct Answer Logic:

The Transactional Model of Stress (Lazarus and Folkman, 1984) proposes that stress arises from the transaction between the person and the environment. Stress depends on: (1) primary appraisal — is this situation threatening or challenging? and (2) secondary appraisal — do I have the resources to cope? If demands exceed perceived coping resources, stress results. GAS (Selye) focuses on physiological response stages; SRRS ranks life events by stress level.

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Economics QUESTION #1683

Question 87

In consumer theory, the marginal utility of consuming a good is most precisely defined as the:

Total utility derived from the good before the last unit is consumed
Additional utility gained from consuming one more unit of the good✔️
Utility derived from consuming a different, substitute good
Consumer surplus generated from the consumption of an alternative good

Correct Answer Logic:

Marginal utility (MU) is the additional (incremental) utility or satisfaction a consumer derives from consuming one more unit of a good, holding all else constant. Mathematically: $MU = \dfrac{\Delta TU}{\Delta Q}$. The Law of Diminishing Marginal Utility states that MU typically declines as more units are consumed. It is the foundational concept in cardinal utility analysis and the derivation of the demand curve.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3154

Question 88

Which type of white blood cell is the most numerous and the first responder to infection?

Lymphocyte
Monocyte
Neutrophil✔️
Eosinophil

Correct Answer Logic:

Neutrophils make up $60-70\%$ of WBCs and are professional phagocytes.

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General Knowledge QUESTION #271

Question 89

The capital of Costa Rica is:

San Jose✔️
Tegucigalpa
Managua
None of these

Correct Answer Logic:

San Jose is the largest city and capital of Costa Rica.

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The Title 28 of the United States Code QUESTION #3749

Question 90

The 'Full Faith and Credit' Clause of the Constitution requires that:

Congress must pay all national debts.
States must respect the public acts, records, and judicial proceedings of every other state.✔️
The President must believe in the Supreme Court.
Citizens must pay their taxes to the federal government before state governments.

Correct Answer Logic:

Article IV, Section 1 ensures that a judgment or record from one state is recognized and enforceable in others.

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Therapeutics and Patient Care QUESTION #3910

Question 91

A $22$-year-old woman at $33$ weeks gestation is in premature labour. Which antenatal medication can be administered to accelerate foetal lung surfactant maturity?

Betamethasone✔️
Fludrocortisone
Salbutamol
Spironolactone

Correct Answer Logic:

Antenatal corticosteroids such as betamethasone or dexamethasone are administered to mothers at risk of preterm delivery to stimulate foetal pulmonary surfactant synthesis and reduce neonatal respiratory distress syndrome.

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English QUESTION #2714

Question 92

What does 'Break down' mean in the context of machinery?

To stop functioning✔️
To start working
To smash
To lose control

Correct Answer Logic:

A machine 'breaks down' when it stops working due to a mechanical failure.

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Biology QUESTION #549

Question 93

Which of the following has rootless sporophytes?

Psilopsida✔️
Tracheophyta
Lycopsida
Sphenopsida

Correct Answer Logic:

Psilopsida (whisk ferns) have rootless sporophytes

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Basic Mathematics QUESTION #2897

Question 94

In how many years will $\$200$ double itself at $10\%$ simple interest?

5 years
10 years✔️
20 years
8 years

Correct Answer Logic:

To double, Interest must equal Principal ($200$). $T = (200 \times 100) / (200 \times 10) = 10$ years.

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Physics QUESTION #4410

Question 95

Mechanical waves cannot travel through outer space because they:

Have low speed in vacuum
Disperse in space due to long wavelength
Lose frequency in the absence of air
Lose transmission without interacting particles✔️

Correct Answer Logic:

Mechanical waves (sound, seismic waves) require a material medium (particles) to propagate — they transfer energy through the vibration of particles. In outer space (vacuum), there are no particles to interact with, so mechanical waves cannot travel.

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General Knowledge QUESTION #2615

Question 96

A Hard Disk Drive (HDD) works by using:

Electronic flash memory chips with no moving parts
A spinning platter and a mechanical arm to read and write information✔️
A network connection to store data in the cloud
Light beams and optical lenses to read data from a disc

Correct Answer Logic:

An HDD (Hard Disk Drive) uses a spinning platter and a mechanical arm to read and write information. The platter spins at high RPM (Revolutions Per Minute) while the arm moves across it to access data.

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Professional QUESTION #1828

Question 97

Section 8(1) on seniority explicitly states that preparation of a seniority list shall NOT be construed to confer what right on a civil servant?

Right to appeal against seniority placement
Any vested right to a particular seniority in such service, cadre or post✔️
Right to seek review of promotion decisions
Right to challenge transfer orders

Correct Answer Logic:

Section 8(1) makes a critical clarification that while the appointing authority shall cause a seniority list to be prepared for proper administration, nothing therein shall be construed to confer any vested right to a particular seniority. This prevents civil servants from claiming enforceable seniority rights solely on the basis of the list.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #2955

Question 98

Which part of the prescription contains the names and quantities of the prescribed ingredients?

Superscription
Inscription✔️
Subscription
Transcription

Correct Answer Logic:

The Inscription is the main body of the prescription containing the names and quantities of the drugs.

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Mathematics QUESTION #1288

Question 99

A linear transformation $T:\mathbb{R}^3\to\mathbb{R}^2$ must satisfy, for all $\mathbf{u},\mathbf{v}\in\mathbb{R}^3$ and scalar $c$:

T($\mathbf{u}+\mathbf{v}) = T(\mathbf{u})\cdot T(\mathbf{v})$
T(c$\mathbf{u}) = c^2T(\mathbf{u})$
T($\mathbf{u}+\mathbf{v}) = T(\mathbf{u})+T(\mathbf{v})$ and $T(c\mathbf{u})=cT(\mathbf{u})$✔️
T must be onto

Correct Answer Logic:

A linear transformation satisfies two properties: (1) Additivity: $T(\mathbf{u}+\mathbf{v})=T(\mathbf{u})+T(\mathbf{v})$, and (2) Homogeneity: $T(c\mathbf{u})=cT(\mathbf{u})$. Both must hold simultaneously. Together they imply $T(c\mathbf{u}+d\mathbf{v})=cT(\mathbf{u})+dT(\mathbf{v})$.

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MCQs Section QUESTION #4907

Question 100

A peculiar feature of the embryonic mammalian circulatory system is that in the area of the heart the cells adhere to one another, _____ exclusive of one another.

beating in unison and adopting
they beat in unison while adopting
beat in unison, and adopt
beating in unison yet adopting✔️

Correct Answer Logic:

Beating in unison yet adopting' uses 'yet' to convey the meaningful contrast: the cells beat together yet adopt mutually exclusive orientations. 'And' in option A fails to express this contrast. Options B and E introduce finite verb clauses that break the participial parallel. Option C uses base-form verbs that do not fit grammatically.

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