Reading Mode - Questions

Education QUESTION #6750

A test developer calculates item difficulty (p-value) for a four-choice MCQ and obtains p = 0.92. What is the MOST appropriate interpretation and action?

The item has excellent discrimination and should be retained as-is
The item is very easy; it should be reviewed and possibly replaced unless the purpose specifically requires mastery-level warm-up items✔️
The item has optimal difficulty for a norm-referenced test since p-value is above 0.5
The item discrimination index will necessarily be high because many students answered correctly

Correct Answer Logic:

For a four-alternative MCQ, the optimal p-value is approximately 0.62. A p-value of 0.92 means 92% answered correctly — the item is very easy. In NRT contexts this reduces discrimination power. Items above p = 0.90 need careful review. High p-value does not guarantee high discrimination; in fact, near-universal correct responses often yield near-zero or negative discrimination.

Uploaded by: Fani Warraich

Education QUESTION #11673

Question 6622

_____ validity refers to the extent to which a measurement tool superficially appears to measure what it is supposed to measure.

Construct
Face✔️
Internal
None of these

Correct Answer Logic:

Face validity is a superficial, non-statistical form of validity — it refers to whether the test “looks like” it measures what it claims to measure, as judged by experts or test-takers at face value. It is the weakest form of validity but still matters for test credibility and acceptance.

Correct Answer: B — Face validity.

Uploaded by: Fani Warraich

Physics QUESTION #7838

Question 6623

Force on a positive charge q moving with velocity v in magnetic field B is:

$q = Fv \times B$
$F = qv \times B$✔️
$F = v \times B / q$
$q = v \times B / F$

Correct Answer Logic:

Lorentz force: $\vec{F} = q(\vec{v} \times \vec{B})$.

Uploaded by: Fani Warraich

MCQs Section QUESTION #4842

Question 6624

Pick the word nearly opposite in meaning to "DELETERIOUS"

Nourishing✔️
Injurious
Vital
Fatal

Correct Answer Logic:

Deleterious means harmful or damaging to health or wellbeing. Its antonym is 'nourishing,' which means providing nourishment and promoting health and growth.

Uploaded by: Fani Warraich

Mathematics QUESTION #6015

Question 6625

If the matrix $P = \begin{pmatrix}1 & \alpha & 3\\1 & 3 & 3\\2 & 4 & 4\end{pmatrix}$ is the adjoint of a $3\times3$ matrix $A$ with $|A|=4$, find $\alpha$.

4
11✔️
5

Correct Answer Logic:

We use the property: $|adj(A)| = |A|^{n-1}$ for an $n\times n$ matrix. Here $n=3$, so $|P| = |A|^2 = 16$.

Compute $|P|$ by expanding along row 1 (with unknown $\alpha$):

$|P| = 1(3\cdot4-3\cdot4) - \alpha(1\cdot4-3\cdot2) + 3(1\cdot4-3\cdot2)$

$= 1(0) - \alpha(4-6) + 3(4-6) = 2\alpha - 6$

Setting $2\alpha - 6 = 16 \Rightarrow 2\alpha = 22 \Rightarrow \alpha = \mathbf{11}$

Uploaded by: Fani Warraich

Pakistan Affairs QUESTION #128

Question 6626

The Indus River originates in China, near:

Tianchi Lake
Lugu Lake
Mapam Lake
Mansarovar Lake✔️

Correct Answer Logic:

The Indus River originates in the Tibetan Plateau in the vicinity of Lake Mansarovar.

Uploaded by: Fani Warraich

Accounting & Finance QUESTION #6209

Question 6627

Which decision area involves determining the long-term mix of debt and equity for a firm?

Capital Budgeting
Capital Structure✔️
Working Capital Management
Asset Allocation

Correct Answer Logic:

Capital structure is the specific mixture of long-term debt and equity the firm uses to finance its operations [cite: 4].

Uploaded by: Fani Warraich

General Knowledge QUESTION #4718

Question 6628

Reuters news agency belongs to which country?

USA
Germany
UK✔️
France

Correct Answer Logic:

Reuters is a British multinational news agency founded in 1851 by Paul Julius Reuter, headquartered in London, United Kingdom.

Uploaded by: Fani Warraich

Accounting & Finance QUESTION #1212

Question 6629

__________ is a systematic examination of the books and records of a business.

Auditing✔️
Vouching
Verification
Checking

Correct Answer Logic:

Auditing is defined as the systematic and independent examination of books of accounts, documents, records, and financial statements of an organization. Its purpose is to enable the auditor to express an opinion on the true and fair view of the financial statements. Vouching and verification are procedures within an audit.

Uploaded by: Fani Warraich

MBBS QUESTION #10313

Question 6630

A nucleoside differs structurally from a nucleotide in that a nucleoside consists of:

A nitrogenous base plus a phosphate group, without any sugar component
A nitrogenous base linked to a pentose sugar, without an attached phosphate group✔️
Only a phosphate group and a sugar, without a nitrogenous base
Multiple nucleotides joined together in a chain

Correct Answer Logic:

A nucleoside is simply a base-sugar combination (e.g., adenosine = adenine + ribose); adding one or more phosphate groups to the sugar's 5' position converts it into a nucleotide (e.g., adenosine monophosphate).

Uploaded by: Fani Warraich

Geography QUESTION #6309

Question 6631

In diffusion of innovation theory, which adopter category represents the critical mass for widespread acceptance?

Innovators (2.5%)
Early Adopters (13.5%)
Early Majority (34%)✔️
Late Majority (34%)

Correct Answer Logic:

The Early Majority (34%) represents the critical mass or 'tipping point' in Rogers' diffusion model. Once this pragmatic group adopts an innovation, widespread acceptance becomes inevitable. They adopt just before the average member of society.

Uploaded by: Fani Warraich

Mathematics QUESTION #4166

Question 6632

Using Trapezoidal rule with 5 points (4 subintervals) for $\int_1^3 \frac{1}{x^2} dx$, what is $h$?

$0.25$
$0.5$✔️
$0.75$
$1$

Correct Answer Logic:

5 points means 4 subintervals. $h = \frac{3-1}{4} = \frac{2}{4} = 0.5$.

Uploaded by: Fani Warraich

MCQs Section QUESTION #5126

Question 6633

وہ صنفِ سخن کیا ہے جس کے ہر بند میں دونوں مصرعے ہم قافیہ ہوں اور ہر دوسرے شعر میں قافیہ بدل جائے؟

مسدس
مثنوی✔️
مخمس
ان میں سے کوئی نہیں

Correct Answer Logic:

مثنوی وہ نظم ہے جس میں ہر شعر کے دونوں مصرعے ہم قافیہ ہوں اور ہر شعر میں قافیہ بدل جائے۔

Uploaded by: Fani Warraich

Mathematics QUESTION #7458

Question 6634

The equation of the line passing through $(-4, 3, 1)$, parallel to the plane $x + 2y - z - 5 = 0$ and intersecting the line $\frac{x+1}{-3} = \frac{y-3}{2} = \frac{z-2}{-1}$ is:

$\frac{x-4}{2} = \frac{y+3}{1} = \frac{z+1}{4}$
$\frac{x+4}{1} = \frac{y-3}{1} = \frac{z-1}{3}$
$\frac{x+4}{3} = \frac{y-3}{-1} = \frac{z-1}{1}$✔️
$\frac{x+4}{-1} = \frac{y-3}{1} = \frac{z-1}{1}$

Correct Answer Logic:

Let the required line intersect the given line at parameter $t$, giving point $(-1-3t, 3+2t, 2-t)$. The direction vector of required line from $(-4,3,1)$ to this point is $(3-3t, 2t, 1-t)$. This must be perpendicular to plane normal $(1,2,-1)$: $(3-3t)(1) + (2t)(2) + (1-t)(-1) = 0$, giving $3-3t+4t-1+t = 0$, so $2+2t = 0$ and $t = -1$. The intersection point is $(2, 1, 3)$. Direction ratios: $(2-(-4), 1-3, 3-1) = (6, -2, 2)$, which simplifies to $(3, -1, 1)$. The line equation is $\frac{x+4}{3} = \frac{y-3}{-1} = \frac{z-1}{1}$.

Uploaded by: Fani Warraich

Math Physics Chemistry Biology QUESTION #7730

Question 6635

Which enzyme is secreted in its active form without needing activation?

Amylase✔️
Lipase
Peptidase
Protease

Correct Answer Logic:

Amylase (salivary and pancreatic) is secreted in active form. Many proteases (e.g., pepsin, trypsin) are secreted as zymogens (inactive precursors) to prevent auto-digestion.

Uploaded by: Fani Warraich

Physics QUESTION #7862

Question 6636

Escape velocity from Earth depends on:

Angle of projection
Mass and angle
Mass of Earth✔️
Mass of body

Correct Answer Logic:

v_esc = √(2GM/R), independent of mass of body and angle.

Uploaded by: Fani Warraich

Tourism & Hospitality Management QUESTION #1646

Question 6637

According to the Sports and Adventure Tourism course, which of the following is listed as a major adventure activity requiring specific skills and safety training?

Cricket and field hockey
Mountaineering, Trekking, Mountain Biking, Skiing, Diving, White Water Rafting, Surfing, Ballooning, Parachuting, and Paragliding✔️
Golf, Tennis, and Swimming only
Cycling, Jogging, and Swimming as low-risk activities

Correct Answer Logic:

Module 7 of the Sports and Adventure Tourism course specifically lists the major adventure activities and their required skills: Mountaineering, Trekking, Mountain Biking, Skiing, Diving, White Water Rafting, Surfing, Swimming, Ballooning, Parachuting, and Paragliding — each requiring specialized skills, equipment, and safety knowledge beyond standard recreational activity.

Uploaded by: Fani Warraich

General Knowledge QUESTION #4807

Question 6638

The United Nations uses the Human Development Index (HDI) primarily to measure what?

Predict which countries may engage in ethnic cleansing
Demonstrate how effectively a country provides for citizens' welfare and security✔️
Predict the percentage of displaced people from failed states
Prove the Global South is not as impoverished as claimed

Correct Answer Logic:

The Human Development Index (HDI), developed by Mahbub ul Haq and UNDP, measures a country's achievement in three key dimensions: long and healthy life, access to education, and a decent standard of living.

Uploaded by: Fani Warraich

General Knowledge QUESTION #2624

Question 6639

THERMAL PASTE is used in a computer to:

Lubricate the moving parts inside a hard disk drive
Better connect the CPU and heat sink so heat transfers more efficiently between them✔️
Protect the motherboard from electrical surges and short circuits
Improve the connection speed between RAM and the CPU

Correct Answer Logic:

Thermal paste is a substance used to better connect our CPU and heat sink so that heat transfers from one to the other more efficiently. It fills microscopic gaps between the CPU surface and the heatsink base, improving thermal conductivity and cooling effectiveness.

Uploaded by: Fani Warraich

Reading and Writing (Module-1) QUESTION #5351

Question 6640

The following passage is adapted from Jerome K. Jerome’s novel Three Men in a Boat (To Say Nothing of the Dog). The narrator is on a boat trip with his friends. '[Harris] told us anecdotes of how he had gone across the [English] Channel when it was so rough that the passengers had to be tied into their [beds], and he and the captain were the only two living souls on board who were not ill. Sometimes it was he and the second mate who were not ill; but it was generally he and one other man. If not he and another man, then it was he by himself.' Which choice best describes the function of the underlined sentence in the text as a whole?

It indicates the reason for Harris's eagerness to resume traveling.
It hints at Harris's feeling that during an earlier boat trip, others didn't include him in activities.
It emphasizes that Harris always boasts about his own constitution when speaking of a previous boat trip.✔️
It reveals that although Harris claims to prefer solitary activities when traveling, he actually enjoys having company.

Correct Answer Logic:

The sentence lists variations of Harris being the only one not sick, highlighting his habit of bragging about his physical resilience.

Uploaded by: Fani Warraich

More Options

Suggest a Question