Reading Mode - Questions

Mathematics QUESTION #4093

Using the $\varepsilon$-$\delta$ definition of limit, $\displaystyle\lim_{x\to2}\frac{x^3-4}{x^2+1}$ equals (by direct substitution since denominator is nonzero at $x=2$):

Indeterminate form $0/0$
$\dfrac{4}{5}$✔️
$\dfrac{8}{5}$
$\dfrac{4}{3}$

Correct Answer Logic:

Since the denominator $x^2+1\neq0$ at $x=2$, direct substitution applies: numerator $=2^3-4=8-4=4$, denominator $=2^2+1=5$. The limit equals $\dfrac{4}{5}$. The $\varepsilon\text{-}\delta$ proof formally verifies this value.

Uploaded by: Fani Warraich

Reading and Writing (Module-1) QUESTION #5348

Question 722

Researchers in neuroeconomics at the University of Zurich suggest that the speed of decision-making might be tied to the link between the prefrontal and parietal cortices. People tend to be more resolute when the transmission of information between these areas is boosted, but they hesitate more when that flow is ______. Which choice completes the text with the most logical and precise word or phrase?

reduced✔️
evaluated
determined
acquired

Correct Answer Logic:

The text contrasts 'intensified' flow (decisive) with a state that causes slow choices; 'reduced' provides the necessary logical opposite.

Uploaded by: Fani Warraich

Mechanical Engineering QUESTION #2388

Question 723

The standard second-order closed-loop transfer function is written as:

$Y(s) = \frac{2\zeta\omega_n}{s^2+2\zeta\omega_n s+\omega_n^2}$
$Y(s) = \frac{\omega_n^2}{s^2+2\zeta\omega_n s+\omega_n^2}$✔️
$Y(s) = \frac{\omega_n^2}{s^2+\omega_n^2}$
$Y(s) = \frac{1}{s^2+2\zeta s+1}$

Correct Answer Logic:

The standard second-order system: $Y(s)=\frac{\omega_n^2}{s^2+2\zeta\omega_n s+\omega_n^2}$ where $\omega_n$ is the undamped natural frequency and $\zeta$ is the damping ratio. Poles: $s=-\zeta\omega_n\pm\omega_n\sqrt{\zeta^2-1}$.

Uploaded by: Fani Warraich

General Knowledge QUESTION #4650

Question 724

In your hostel mess, the vegetable curry has had stones for ten days. What will you do?

Buy your own vegetables and cook✔️
Leave consuming vegetables altogether
Speak with cook to change the vegetable
Bring the matter to notice of mess in-charge, then hostel administration

Correct Answer Logic:

3

Uploaded by: Fani Warraich

Electrical Engineering QUESTION #2168

Question 725

In the two-wattmeter method for a balanced three-phase load, $W_1 = 1500\,\text{W}$ and $W_2 = 500\,\text{W}$. The load power factor is:

$0.866$✔️
$0.707$
$0.5$
$0.75$

Correct Answer Logic:

$\tan\phi = \frac{\sqrt{3}(W_1-W_2)}{W_1+W_2} = \frac{\sqrt{3}(1000)}{2000} = \frac{\sqrt{3}}{2}$, so $\phi = 30°$ and $\text{pf} = \cos 30° \approx 0.866$.

Uploaded by: Fani Warraich

Biology QUESTION #4267

Question 726

Which part of the brain contains central chemoreceptors that monitor $CO_2$ levels in blood?

Pons
Midbrain
Hypothalamus
Medulla oblongata✔️

Correct Answer Logic:

The medulla oblongata contains central chemoreceptors that detect changes in $CO_2$ and pH of cerebrospinal fluid, regulating the breathing rate.

Uploaded by: Fani Warraich

MCQs Section QUESTION #4832

Question 727

Select the word nearly opposite in meaning to "DESICCATE"

Lengthen
Hallow
Exonerate
Saturate✔️

Correct Answer Logic:

Desiccate means to dry out completely or remove all moisture. Its antonym is 'saturate,' which means to soak thoroughly or fill completely with liquid.

Uploaded by: Fani Warraich

Chemistry QUESTION #1020

Question 728

Arrange $\text{HBr}$, $\text{H}_2\text{S}$, $\text{NF}_3$ and $\text{CHCl}_3$ in increasing order of their dipole moment:

$\text{H}_2\text{S} < \text{HBr} < \text{NF}_3 < \text{CHCl}_3$
$\text{NF}_3 < \text{HBr} < \text{H}_2\text{S} < \text{CHCl}_3$✔️
$\text{HBr} < \text{H}_2\text{S} < \text{NF}_3 < \text{CHCl}_3$
$\text{CHCl}_3 < \text{NF}_3 < \text{HBr} < \text{H}_2\text{S}$

Correct Answer Logic:

Dipole moments (approx): $\text{NF}_3\approx0.24\ \text{D}$ (F pulls away from N lone pair, net dipole is small); $\text{HBr}\approx0.82\ \text{D}$; $\text{H}_2\text{S}\approx0.97\ \text{D}$; $\text{CHCl}_3\approx1.87\ \text{D}$. Increasing order: $\text{NF}_3 < \text{HBr} < \text{H}_2\text{S} < \text{CHCl}_3$.

Uploaded by: Fani Warraich

Logical Reasoning QUESTION #3957

Question 729

In the hierarchy of land animals, the size of the _____ is surpassed _____.

whale is only the✔️
only the whale is
is the whale only
only whale is the

Correct Answer Logic:

1

Uploaded by: Fani Warraich

Mechanical Engineering QUESTION #2438

Question 730

For an underdamped system ($\zeta < 1$), the damped natural frequency $\omega_d$ (quasi-circular frequency $b$) is:

$\omega_d = \omega_n / \sqrt{1-\zeta^2}$
$\omega_d = \omega_n\sqrt{1-\zeta^2}$✔️
$\omega_d = \omega_n(1-\zeta)$
$\omega_d = \omega_n + \zeta$

Correct Answer Logic:

For the underdamped case, the damped natural frequency is $\omega_d=\omega_n\sqrt{1-\zeta^2}$. Since $\zeta<1$, $\omega_d<\omega_n$.

Uploaded by: Fani Warraich

Therapeutics and Patient Care QUESTION #3912

Question 731

Which of the following can elevate plasma lithium levels and increase the risk of lithium toxicity?

Moderate exercise
Salt-intake reduction✔️
Smoking cessation
Hypothyroidism

Correct Answer Logic:

Sodium depletion (from low-salt diet, diuretics, vomiting, or excessive sweating) causes the kidney to reabsorb more lithium along with sodium, increasing plasma lithium levels and toxicity risk.

Uploaded by: Fani Warraich

Public Administration QUESTION #2920

Question 732

Which budgeting technique focuses on the specific items or inputs purchased by a department?

Performance Budgeting
Zero-based Budgeting
Line-item Budgeting✔️
Program Budgeting

Correct Answer Logic:

Line-item budgeting lists specific expenditures (salaries, equipment) and is primarily used for financial control and accountability.

Uploaded by: Fani Warraich

Basic Mathematics QUESTION #4523

Question 733

If $x < 5$, then $x + 3$:

$< 8$✔️
$> 8$
$= 8$
$\geq 8$

Correct Answer Logic:

Adding same value to both sides preserves inequality. $x < 5 \Rightarrow x + 3 < 5 + 3 \Rightarrow x + 3 < 8$

Uploaded by: Fani Warraich

Islamic Studies QUESTION #652

Question 734

The first mosque built by the Holy Prophet (ﷺ) was:

Masjid-e-Nabwi
Masjid-e-Quba✔️
Masjid-e-Haram
None of these

Correct Answer Logic:

Masjid-e-Quba was the first mosque established by the Prophet (ﷺ) upon his migration.

Uploaded by: Fani Warraich

Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3462

Question 735

'Transcription' produces which molecule?

DNA
RNA✔️
Protein
Lipid

Correct Answer Logic:

A single strand of mRNA is synthesized from the DNA template.

Uploaded by: Fani Warraich

Biology Zoology Botany QUESTION #1365

Question 736

A cross between an individual with an unknown genotype and a homozygous recessive individual is called a:

Back cross
Test cross✔️
Monohybrid cross
Dihybrid cross

Correct Answer Logic:

A test cross involves crossing an organism with an unknown genotype (possibly homozygous dominant or heterozygous) with a homozygous recessive individual (e.g., aa). The phenotypic ratio of offspring reveals the unknown genotype. If all offspring show the dominant phenotype, the unknown parent is homozygous dominant; if a 1:1 ratio appears, it is heterozygous.

Uploaded by: Fani Warraich

Biology QUESTION #4310

Question 737

Effect of increased substrate concentration on enzyme activity:

Decrease the rate of reaction
Increase the reaction rate until all active sites are saturated✔️
Have no effect on the reaction rate
Increase the rate of reaction in a straight diagonal line

Correct Answer Logic:

As substrate concentration increases, more enzyme active sites are occupied and reaction rate increases. However, once all active sites are saturated ($V_{max}$), the rate plateaus.

Uploaded by: Fani Warraich

Tourism & Hospitality Management QUESTION #1639

Question 738

The Restaurant Management course covers 'SERVQUAL' as an assessment tool. In the restaurant context, SERVQUAL measures service quality across which five dimensions?

Speed, Efficiency, Reliability, Value, and Quality
Tangibles, Reliability, Responsiveness, Assurance, and Empathy✔️
Menu variety, Pricing, Ambiance, Staff appearance, and Cleanliness
Hygiene, Taste, Presentation, Portioning, and Temperature

Correct Answer Logic:

SERVQUAL — covered in Module 3 of the Restaurant Management course under 'Services technicalities' — is the standard service quality measurement instrument assessing five dimensions: Tangibles (physical facilities and staff appearance), Reliability (consistent service delivery), Responsiveness (willingness to help), Assurance (knowledge and courtesy), and Empathy (individualized customer care).

Uploaded by: Fani Warraich

City and Regional Planning QUESTION #5002

Question 739

In housing affordability analysis, if median household income is $40,000 and median house price is $200,000, what is the price-to-income ratio?

2.0
3.0
5.0✔️
8.0

Correct Answer Logic:

Price-to-Income Ratio = $\frac{\text{Median House Price}}{\text{Median Annual Household Income}} = \frac{200,000}{40,000} = 5.0$. Ratios above 3-4 indicate affordability problems; ratios above 5 suggest severe affordability crisis requiring policy intervention.

Uploaded by: Fani Warraich

Urdu QUESTION #5151

Question 740

مولانا حالی کی طویل نظم مسدسِ حالی کا اصل عنوان کیا ہے؟

مدّ و جزرِ اسلام✔️
مسلمانوں کا تابناک ماضی
حیاتِ طیبہ
مسلمانوں کے عروج و زوال کی داستان

Correct Answer Logic:

مسدسِ حالی کا مکمل عنوان 'مدّ و جزرِ اسلام' ہے جو اسلام کی ترقی اور زوال کی تاریخ پر مبنی ہے۔

Uploaded by: Fani Warraich

More Options

Suggest a Question