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Physics QUESTION #1153

The zeroth law of thermodynamics helps to define the term:

Temperature✔️
Pressure
Volume
Density

Correct Answer Logic:

The zeroth law of thermodynamics states that if two systems are each in thermal equilibrium with a third system, they are in thermal equilibrium with each other. This law provides the basis for defining and measuring temperature.

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Agronomy QUESTION #2017

Question 2

Primary tillage differs from secondary tillage in that primary tillage:

Is performed closer to sowing time with lighter implements
Breaks the soil to greater depths and is performed soon after harvest of the previous crop✔️
Is exclusively used for inter-row cultivation during crop growth
Involves only the surface 2–3 cm of soil

Correct Answer Logic:

Primary tillage refers to deep initial tillage (e.g., moldboard or disc plowing) performed after harvest to break up compacted soil. Secondary tillage involves shallower, finer operations (harrowing, leveling) performed closer to sowing to refine the seedbed.

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Accounting & Finance QUESTION #1196

Question 3

The predictive value of accounting information refers to its ability to:

Validate past decisions.
Highlight errors in accounting practices
Influence future investment decisions.✔️
Support regulatory compliance.

Correct Answer Logic:

Predictive value is a component of relevance. Accounting information has predictive value if it can be used as an input to processes employed by users to predict future outcomes — such as influencing future investment, lending, and other economic decisions. It helps users forecast future cash flows and financial performance.

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Pakistan Affairs QUESTION #622

Question 4

What is the name of the economist who developed the current Human Development Index (HDI)?

Dr. Qaisar Bengali
Dr. Mahbub ul Haq✔️
Dr. Hafeez Pasha
None of these

Correct Answer Logic:

Dr. Mahbub ul Haq, a Pakistani economist, created the HDI in 1990 .

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General Abilities QUESTION #4569

Question 5

Three oranges cost Rs.$5$. How much do $12$ oranges cost?

Rs.$15$
Rs.$17$
Rs.$20$✔️
Rs.$60$

Correct Answer Logic:

Set up proportion: $\frac{3}{5} = \frac{12}{x}$. Cross-multiply: $3x = 60$, so $x = 20$

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HR and Management QUESTION #6439

Question 6

In the context of managing diversity, organizations strive for workplace balance primarily as a matter of:

Legal compliance and avoiding lawsuits
Economic self-interest and improved performance✔️
Social justice and moral obligation
Government mandate enforcement

Correct Answer Logic:

While legal and moral factors exist, the text emphasizes that managers are striving for racial, ethnic, and sexual workplace balance as a matter of economic self-interest. Studies show cultural diversity contributes to improved productivity, return on equity, and market performance.

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Biology QUESTION #7256

Question 7

ICBN stands for:

Indian Code of Botanical Nomenclature
Indian Congress of Biological Names
International Code of Botanical Nomenclature✔️
International Congress of Biological Names

Correct Answer Logic:

ICBN stands for International Code of Botanical Nomenclature. It is the set of rules governing the naming of plants, algae, and fungi. It ensures each plant has one accepted scientific name, following binomial nomenclature as proposed by Linnaeus. (Now updated to ICN — International Code of Nomenclature for algae, fungi, and plants.)

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Boilers Mechanical Engineering QUESTION #2480

Question 8

The inertia force $\mathbf{F}_{in}$ introduced in D'Alembert's principle for a rigid body with center of mass acceleration $\mathbf{a}_C$ and mass $m$ is:

$\mathbf{F}_{in} = m\mathbf{a}_C$
$\mathbf{F}_{in} = -I_C\boldsymbol{\alpha}$
$\mathbf{F}_{in} = -m\mathbf{a}_C$✔️
$\mathbf{F}_{in} = m\mathbf{g}$

Correct Answer Logic:

D'Alembert's principle introduces the inertia force $\mathbf{F}_{in}=-m\mathbf{a}_C$ and inertia moment $M_{in}=-I_C\alpha$. Adding these fictitious terms to real external forces converts the dynamic problem into an equivalent static equilibrium.

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Ability / HR / Governance / Special Education QUESTION #1934

Question 9

Under Schedule VI which body/authority submits cases to the President for orders in his discretion?

All Federal Divisions for their respective subjects
Only the Cabinet Division (for appointment of caretaker PM) and the Parliamentary Affairs Division (for dissolution of National Assembly under Article 58(2))✔️
Only the Parliamentary Affairs Division
The Prime Minister on advice of the Cabinet

Correct Answer Logic:

Schedule VI (Rule 15-A(2)) lists only two categories of cases for the President's orders in his own discretion: (1) Appointment of Care-taker Prime Minister under Article 224(1A) — Cabinet Division; and (2) Dissolution of National Assembly under Article 58(2) — Parliamentary Affairs Division.

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Chemistry QUESTION #5559

Question 10

Among the given vitamins, which one is water-soluble?

Vitamin C✔️
Vitamin D
Vitamin E
Vitamin K

Correct Answer Logic:

Vitamins are classified as water-soluble (B-complex and C) or fat-soluble (A, D, E, K). Vitamin C (ascorbic acid) is water-soluble — it dissolves in water and is not stored in the body, so regular dietary intake is required. Vitamins D, E, and K are fat-soluble.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3458

Question 11

'Bicarbonate' is the most important buffer in:

The stomach
The blood (extracellular fluid)✔️
The cell nucleus
The skin

Correct Answer Logic:

The $CO_2$ / $HCO_3^-$ system maintains blood $pH$.

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General Abilities QUESTION #4525

Question 12

If $2 < x < 5$, what are possible values of $x$?

$x = 2$ or $x = 5$
$2 < x$ and $x < 5$✔️
$x \leq 2$ or $x \geq 5$
$x = 3.5$ only

Correct Answer Logic:

$2 < x < 5$ means $x$ is greater than $2$ AND less than $5$, so any value between $2$ and $5$ (exclusive)

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Physics QUESTION #1042

Question 13

To an AC supply of 220 V at 50 Hz: $R=20\ \Omega$, capacitive reactance $X_C=25\ \Omega$, inductive reactance $X_L=45\ \Omega$. Current and phase angle are:

15.6 A and 30°
15.6 A and 45°
7.8 A and 30°
7.8 A and 45°✔️

Correct Answer Logic:

Impedance: $Z=\sqrt{R^2+(X_L-X_C)^2}=\sqrt{400+(45-25)^2}=\sqrt{400+400}=\sqrt{800}=20\sqrt{2}\ \Omega$. Current $=\frac{220}{20\sqrt{2}}=\frac{220}{28.28}\approx7.78\ \text{A}\approx7.8\ \text{A}$. Phase angle: $\tan\phi=\frac{X_L-X_C}{R}=\frac{20}{20}=1\Rightarrow\phi=45°$.

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Political Science QUESTION #6695

Question 14

The 'Filibuster' is a procedural tactic used in the:

UK House of Commons
US Senate✔️
French National Assembly
None of these

Correct Answer Logic:

A filibuster is a tactic used in the US Senate to delay or block a vote on a piece of legislation.

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Agronomy QUESTION #2029

Question 15

The Penman-Monteith equation is used in irrigation management to estimate:

Soil water holding capacity
Reference evapotranspiration ($ET_0$) as the standard for computing crop water requirements✔️
The hydraulic conductivity of soil
The critical period of water requirement for a crop

Correct Answer Logic:

The FAO Penman-Monteith equation is the globally accepted standard for computing reference evapotranspiration ($ET_0$) using climatic variables (temperature, humidity, wind speed, solar radiation). Actual crop ET is then computed as $ET_c = K_c \times ET_0$, where $K_c$ is the crop coefficient.

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Boilers Mechanical Engineering QUESTION #4028

Question 16

'Pitting' is a form of localized corrosion that looks like:

Small holes or 'pits' in the metal surface✔️
A coat of paint
Long cracks
A layer of dust

Correct Answer Logic:

Usually caused by dissolved oxygen in the boiler water.

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Islamic Studies QUESTION #335

Question 17

Sahifa-e-Hammam bin Munabbih is contained in its entirety in which book?

Sahih Bukhari
Sahih Muslim
Musnad Ahmad✔️
Sunan Tirmidhi

Correct Answer Logic:

This early Hadith collection is preserved within the Musnad of Imam Ahmad bin Hanbal.

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Physics QUESTION #7863

Question 18

Wheel makes 3 revolutions. Radians rotated:

2π
3π
6π✔️
9π

Correct Answer Logic:

1 rev = 2π rad, so 3 rev = 6π rad.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3386

Question 19

'Zwitterion' is a state where an amino acid has:

Only a positive charge
Only a negative charge
Both positive and negative charges (neutral net charge)✔️
No charges at all

Correct Answer Logic:

This occurs at the isoelectric point ($pI$).

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Biology QUESTION #7240

Question 20

Curing of tea leaves is brought about by the activity of:

Viruses
Fungi
Bacteria✔️
Mycorrhiza

Correct Answer Logic:

Tea curing (fermentation/withering) is carried out by bacteria. Enzymes from bacteria (and endogenous plant enzymes) oxidize the leaf compounds, producing the characteristic colour and flavour of black tea. Fungi are not the primary agents in standard tea curing.

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