Reading Mode - Questions

Math Physics Chemistry Biology QUESTION #4318

The bacterium Treponema pallidum is responsible for which sexually transmitted disease?

Syphilis✔️
Chlamydia
Gonorrhea
Genital herpes

Correct Answer Logic:

Treponema pallidum is the bacterium that causes syphilis, a sexually transmitted infection that progresses through primary, secondary, and tertiary stages if left untreated.

Uploaded by: Fani Warraich

Mathematics QUESTION #1327

Question 102

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.

Uploaded by: Fani Warraich

Maths QUESTION #4556

Question 103

What is $15\%$ of $80$?

$12$✔️
$15$
$95$
$1200$

Correct Answer Logic:

$15\%$ of $80 = \frac{15}{100} \times 80 = 0.15 \times 80 = 12$

Uploaded by: Fani Warraich

Electronics Engineering QUESTION #11711

Question 104

A microwave amplifier has a noise figure (NF) of $3\,\text{dB}$ and gain of $20\,\text{dB}$. A second stage has NF $= 6\,\text{dB}$. The cascaded noise figure by Friis formula is approximately:

$9\,\text{dB}$
$3.02\,\text{dB}$✔️
$4.5\,\text{dB}$
$6\,\text{dB}$

Correct Answer Logic:

Friis formula: $F_{total} = F_1 + \dfrac{F_2 - 1}{G_1}$. In linear: $F_1 = 10^{3/10} = 2$, $G_1 = 10^{20/10} = 100$, $F_2 = 10^{6/10} \approx 4$. $F_{total} = 2 + \dfrac{4-1}{100} = 2 + 0.03 = 2.03$. $\text{NF}_{total} = 10\log(2.03) \approx \mathbf{3.08\,\text{dB}}$. The first-stage NF dominates; high first-stage gain minimises the contribution of subsequent stages.

Uploaded by: Fani Warraich

Chemistry QUESTION #7186

Question 105

One gram of a metal carbonate ($M_{2}CO_{3}$) reacts with an excess of $HCl$ to produce $0.01186 \text{ moles}$ of $CO_{2}$. Calculate the molar mass of $M_{2}CO_{3}$ in $\text{g mol}^{-1}$.

$84.3$✔️
$118.6$
$11.86$
$1186$

Correct Answer Logic:

The reaction is $M_{2}CO_{3} + 2HCl \rightarrow 2MCl + H_{2}O + CO_{2}$:

From stoichiometry, $1 \text{ mole}$ of $M_{2}CO_{3}$ produces $1 \text{ mole}$ of $CO_{2}$.
Moles of $M_{2}CO_{3} = \text{Moles of } CO_{2} = 0.01186$.
Molar Mass = $\text{Mass} / \text{Moles} = 1 \text{ g} / 0.01186 \approx 84.3 \text{ g/mol}$.

Uploaded by: Fani Warraich

General Knowledge QUESTION #8929

Question 106

The word 'Tsunami' originates from which language?

English
Japanese✔️
Urdu
None of these

Correct Answer Logic:

Tsunami is a Japanese word.

Uploaded by: Fani Warraich

English QUESTION #2727

Question 107

Choose the correct PRESENT CONTINUOUS TENSE form: 'He ___ a letter right now.'

writes
wrote
is writing✔️
will write

Correct Answer Logic:

The present continuous tense is used for actions happening at the moment of speaking. It follows the structure: Subject + is/am/are + Verb-ing.

Uploaded by: Fani Warraich

Geology QUESTION #10627

Question 108

Rock maturity is a measure of its _________ with respect to hydrocarbon generation.

Density
Temperature
State✔️
Pressure

Correct Answer Logic:

The maturity of a source rock refers to its state (degree of thermal alteration) in terms of hydrocarbon generation potential. Maturity is assessed using vitrinite reflectance (%Ro), Tmax (from Rock-Eval pyrolysis), or thermal alteration index (TAI). Immature rocks have not generated hydrocarbons; mature rocks are in the oil window (~0.6–1.3% Ro); overmature rocks have generated dry gas or are spent.

Uploaded by: Fani Warraich

Education QUESTION #11618

Question 109

The capacity to apply acquired knowledge effectively in practical or real-world situations is best described as:

Learning
Intelligence✔️
Flexibility
None of these

Correct Answer Logic:

Intelligence is defined in many frameworks as the ability to apply knowledge, solve problems, and adapt to new situations. While learning refers to the acquisition of knowledge, and flexibility refers to adaptability in behavior, intelligence most directly encompasses the ability to use knowledge effectively.

Correct Answer: B — Intelligence.

Uploaded by: Fani Warraich

Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3441

Question 110

'RBCs' (Red Blood Cells) rely exclusively on which pathway for energy?

Beta-oxidation
Glycolysis✔️
Krebs Cycle
Electron Transport Chain

Correct Answer Logic:

RBCs lack mitochondria and must use anaerobic glycolysis.

Uploaded by: Fani Warraich

Social Studies QUESTION #10015

Question 111

Globally, approximately how many women experience gender-based violence in their lifetime?

5 out of 10
5 out of 100
1 out of 3✔️
None of these

Correct Answer Logic:

UN data indicates roughly 1 in 3 women worldwide experience gender-based violence.

Uploaded by: Fani Warraich

General Knowledge QUESTION #8820

Question 112

Union Jack is the national flag of which country?

America
England (United Kingdom)✔️
Canada
France

Correct Answer Logic:

The Union Jack is the flag of the United Kingdom.

Uploaded by: Fani Warraich

Civil Engineering QUESTION #6586

Question 113

An airport site selection criterion requires that the site should:

Be in close proximity to residential areas and schools
Have frequent smoke and haze conditions
Have several airports in the same metropolitan area
None of the above (avoid all the listed conditions)✔️

Correct Answer Logic:

Correct airport siting criteria include:

Away from residential areas and schools (noise)
Clear atmosphere, free from smoke/haze (visibility)
Adequate spacing from other airports
Good drainage and level terrain

Uploaded by: Fani Warraich

Social Studies QUESTION #10078

Question 114

What is the main critique leveled against essentialism in anthropology?

It overemphasizes the importance of biology in shaping human behavior
It ignores the fluidity and diversity of human experiences✔️
It focuses too heavily on individual agency and choice
None of these

Correct Answer Logic:

Essentialism is criticized for treating identities/traits as fixed, thereby overlooking the fluid and diverse nature of human experience.

Uploaded by: Fani Warraich

Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3434

Question 115

The 'Isoelectric Point' ($pI$) of a protein is the $pH$ at which it:

Has a maximum positive charge
Has a maximum negative charge
Has a net charge of zero✔️
Is most soluble

Correct Answer Logic:

At this $pH$, the protein does not move in an electric field.

Uploaded by: Fani Warraich

Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3622

Question 116

Which drug is used as a 'Demulcent' and is obtained from 'Plantago ovata'?

Ispaghula (Psyllium)✔️
Senna
Digitalis
Cinnamon

Correct Answer Logic:

Ispaghula husk is a bulk-forming laxative and demulcent.

Uploaded by: Fani Warraich

Logical Reasoning QUESTION #3955

Question 117

Despite their microscopic size, there are very few biological materials that these _____ cannot _____.

undermine✔️
disseminate
aerate
exterminate

Correct Answer Logic:

1

Uploaded by: Fani Warraich

English Literature QUESTION #10760

Question 118

__________ is the writer of The Spy and is regarded as "the first of the great American novelists."

Washington Irving
James Fenimore Cooper✔️
Nathaniel Hawthorne
Edgar Allan Poe

Correct Answer Logic:

James Fenimore Cooper (1789–1851) wrote The Spy (1821) — a historical novel of the American Revolution — and is often called the 'first great American novelist.' He is best known for his Leatherstocking Tales, including The Last of the Mohicans. Washington Irving was a predecessor but primarily wrote essays and sketches; Hawthorne and Poe came later.

Uploaded by: Fani Warraich

Islamic Studies QUESTION #8251

Question 119

Which Surah is called "Ummul Kitab"?

Al-Baqra
Al-Yasin
Al-Fateha✔️
Al-Rehman

Correct Answer Logic:

Surah Al-Fatiha is called 'Ummul Kitab' (Mother of the Book) and also 'Ummul Quran' (Mother of the Quran). It is the opening Surah of the Quran with 7 verses, also known as 'As-Sab'ul Mathani' (The Seven Oft-Repeated Verses). It is recited in every unit of prayer (Salah) and encompasses the essence of the entire Quran: praising Allah, seeking guidance, and asking for the straight path. The Prophet (PBUH) called it the greatest Surah in the Quran.

Uploaded by: Fani Warraich

Reading and Writing (Module-1) QUESTION #10433

Question 120

The refugees, ------- from their homeland by war, struggled to rebuild their lives in an unfamiliar country.

welcomed
uprooted✔️
invited
settled

Correct Answer Logic:

Being forced to leave one's homeland by war is being 'uprooted.'

Uploaded by: Fani Warraich

More Options

Suggest a Question