Reading Mode - Questions

Chemistry QUESTION #1003

Density of 3 M NaCl solution is $1.25\ \text{g/mL}$. The molality of the solution is:

1.79 m
2.79 m✔️
2 m
3 m

Correct Answer Logic:

Molar mass of NaCl $= 58.5\ \text{g/mol}$. Mass of solute in 1 L: $3 \times 58.5 = 175.5\ \text{g}$. Mass of solution $= 1000 \times 1.25 = 1250\ \text{g}$. Mass of solvent $= 1250 - 175.5 = 1074.5\ \text{g} = 1.0745\ \text{kg}$. Molality $= \frac{3}{1.0745} \approx 2.79\ \text{m}$.

Uploaded by: Fani Warraich

MBBS QUESTION #10250

Question 2

At high altitude, the fall in barometric pressure causes hypoxia despite the fraction of inspired oxygen (FiO2, 21%) remaining unchanged. Using $P_iO_2 = FiO_2 \times (P_{atm} - P_{H_2O})$, which parameter is primarily responsible?

The partial pressure of inspired oxygen (PiO2) falls because atmospheric pressure (Patm) falls✔️
Hemoglobin concentration falls immediately at altitude
Alveolar ventilation rate falls directly and independently of oxygen levels
Diffusion capacity of the lung membrane itself decreases

Correct Answer Logic:

Since FiO2 (21%) and water vapor pressure are essentially constant, a fall in total atmospheric pressure at altitude directly reduces the partial pressure of inspired oxygen (PiO2), reducing the driving gradient for oxygen diffusion into blood — the fundamental cause of high-altitude hypoxia.

Uploaded by: Fani Warraich

Dairy Food Science and Technology QUESTION #5891

Question 3

The water activity $(a_w)$ of whole milk powder is maintained below which value to ensure microbiological safety and prevent caking?

$a_w = 0.95$
$a_w = 0.85$
$a_w = 0.60$✔️
$a_w = 0.30$

Correct Answer Logic:

Whole milk powder should have $a_w < 0.60$ (typically $0.1\text{–}0.3$) to prevent microbial growth (most bacteria require $a_w > 0.90$) and enzymatic reactions. Moisture content is kept below $3\text{–}4\%$.

Uploaded by: Fani Warraich

Maths QUESTION #4628

Question 4

What is $(-1)^{100}$?

$-1$
$1$✔️
$100$
$-100$

Correct Answer Logic:

Negative to even power is positive. $(-1)^{100} = 1$

Uploaded by: Fani Warraich

English QUESTION #506

Question 5

PRODIGIOUS

Productive
Enormous✔️
Prudential
Waddle

Correct Answer Logic:

Prodigious means remarkably great in size or degree

Uploaded by: Fani Warraich

Chemistry QUESTION #7526

Question 6

For the reaction $2\text{C}_{57}\text{H}_{110}\text{O}_6(s) + 163\ \text{O}_2(g) \to 114\ \text{CO}_2(g) + 110\ \text{H}_2\text{O}(l)$, find the mass of water produced from 445 g of C$_{57}$H$_{110}$O$_6$.

490 g
445 g
495 g✔️
890 g

Correct Answer Logic:

Molar mass of C$_{57}$H$_{110}$O$_6$: $57(12)+110(1)+6(16)=684+110+96=890\ \text{g mol}^{-1}$

Moles of C$_{57}$H$_{110}$O$_6 = \dfrac{445}{890} = 0.5\ \text{mol}$

From stoichiometry: 2 mol fat → 110 mol H$_2$O

So 0.5 mol fat → $\dfrac{110 \times 0.5}{2} = 27.5\ \text{mol H}_2\text{O}$

Mass of H$_2$O $= 27.5 \times 18 = \mathbf{495\ \text{g}}$

Uploaded by: Fani Warraich

Chemistry QUESTION #4366

Question 7

The value of Planck's constant is:

$6.6262 \times 10^{-30}\ J\cdot s$
$6.6262 \times 10^{-32}\ J\cdot s$
$6.6262 \times 10^{+34}\ J\cdot s$
$6.6262 \times 10^{-34}\ J\cdot s$✔️

Correct Answer Logic:

Planck's constant $h = 6.626 \times 10^{-34}\ J\cdot s$. It relates the energy of a photon to its frequency: $E = h\nu$.

Uploaded by: Fani Warraich

Mathematics QUESTION #4155

Question 8

Three forces of magnitudes $3N$, $4N$, $5N$ act along the sides of a triangle forming a closed loop. What is their resultant?

$12N$
$0N$✔️
$\sqrt{50}N$
$1N$

Correct Answer Logic:

If forces act along sides of a triangle forming a closed loop (in equilibrium), by triangle law of vector addition, $\vec{F_1} + \vec{F_2} + \vec{F_3} = \vec{0}$. Resultant is zero.

Uploaded by: Fani Warraich

CISA QUESTION #6862

Question 9

An organization performs annual disaster recovery tests by restoring a single non-critical test database. Management considers DR testing complete and successful. What is the PRIMARY testing deficiency?

Insufficient test duration
Test does not validate actual critical system recovery capability or recovery time objectives✔️
Incomplete documentation
Limited scope

Correct Answer Logic:

Testing only non-critical systems provides no assurance that critical systems can be recovered within required timeframes. DR testing must validate the actual systems and processes needed during a disaster. Testing a non-critical database proves only that one simple restore works, not that the organization can recover operations.

Uploaded by: Fani Warraich

Ability / HR / Governance / Special Education QUESTION #1805

Question 10

According to Rule 16A(4), what is the maximum duration permitted for an open framework agreement?

One year
Two years
Three years✔️
Five years

Correct Answer Logic:

Rule 16A(4) inserted via S.R.O. 442(I)/2020 specifies that open framework agreements shall have a maximum duration of not more than three years, while closed framework agreements shall not exceed one year in duration.

Uploaded by: Fani Warraich

Physics QUESTION #7049

Question 11

An observer travels at half the speed of light towards a $10 \text{ GHz}$ microwave source. What frequency does the observer measure? (Assume $c = 3 \times 10^8 \text{ ms}^{-1}$)

$15.3 \text{ GHz}$
$10.1 \text{ GHz}$
$12.1 \text{ GHz}$
$17.3 \text{ GHz}$✔️

Correct Answer Logic:

Using the Relativistic Doppler Effect formula for an approaching source:

$f' = f \sqrt{\frac{1 + v/c}{1 - v/c}}$

Given $v = 0.5c$:

$f' = 10 \sqrt{\frac{1 + 0.5}{1 - 0.5}} = 10 \sqrt{\frac{1.5}{0.5}} = 10 \sqrt{3} \approx 10 \times 1.732 = 17.32 \text{ GHz}$.

Uploaded by: Fani Warraich

Education QUESTION #6910

Question 12

A school adopts a policy in which 'school-wide behavioral expectations are condensed into three to five positively stated, age-appropriate statements that are prominently displayed and consistently enforced.' This approach is MOST consistent with which framework?

Transactional Analysis applied at the institutional level
Effective Behavioral Support Systems and Social Competence culture-building✔️
Reality Therapy's emphasis on clear rules and plans
Assertive Discipline's consequence hierarchy

Correct Answer Logic:

This approach is the hallmark of Effective Behavioral Support (EBS) and social competence culture-building, which emphasize: (1) positively-framed expectations (e.g., 'Be respectful' not 'Don't insult'), (2) brevity for memorability, (3) age-appropriateness, and (4) school-wide visibility and consistency — all of which are key features of creating a school-wide culture of social competence.

Uploaded by: Fani Warraich

MCQs Section QUESTION #5080

Question 13

علامہ اقبال کی مشہور نظم 'آدم کو جنت سے نکالا گیا' کس مجموعہ میں ہے؟

اسرارِ خودی
بانگِ درا
بالِ جبریل✔️
ضربِ کلیم

Correct Answer Logic:

روحِ ارض آدم کا استقبال کرتی ہے، یہ نظم علامہ اقبال کے مجموعہ 'بالِ جبریل' میں شامل ہے۔

Uploaded by: Fani Warraich

Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3559

Question 14

The 'Rhizome' is a:

Vertical root
Horizontal underground stem✔️
Flower part
Fruit

Correct Answer Logic:

Ginger and Turmeric are examples of medicinal rhizomes.

Uploaded by: Fani Warraich

Physics QUESTION #7339

Question 15

A projectile is fired at $45°$ to the horizontal. The elevation angle of the projectile at its highest point, as seen from the point of projection, is:

$45°$
$60°$
$\tan^{-1}\!\left(\dfrac{1}{2}\right)$✔️
$\tan^{-1}\!\left(\dfrac{\sqrt{3}}{2}\right)$

Correct Answer Logic:

At max height $H = \dfrac{u^2}{4g}$; horizontal distance $= \dfrac{R}{2} = \dfrac{u^2}{2g}$

Elevation angle: $\tan\phi = \dfrac{H}{R/2} = \dfrac{u^2/(4g)}{u^2/(2g)} = \dfrac{1}{2}$

$\phi = \mathbf{\tan^{-1}\!\left(\dfrac{1}{2}\right)}$

Uploaded by: Fani Warraich

Mathematics QUESTION #4167

Question 16

Using Trapezoidal rule with $h = 0.5$ for $\int_1^3 \frac{1}{x^2} dx$, what is the approximate value?

$\frac{1}{2}[f(1) + 2f(1.5) + 2f(2) + 2f(2.5) + f(3)] \times 0.5$
$\frac{1}{2}[f(1) + f(3)] \times 2$
$\frac{0.5}{2}[f(1) + 2f(1.5) + 2f(2) + 2f(2.5) + f(3)]$
Both (A) and (C) are equivalent✔️

Correct Answer Logic:

Trapezoidal rule: $\frac{h}{2}[y_0 + 2y_1 + 2y_2 + 2y_3 + y_4]$. Here $h = 0.5$, so formula is $\frac{0.5}{2}[...] = \frac{1}{4}[...]$, which equals $\frac{1}{2}[...] \times 0.5$.

Uploaded by: Fani Warraich

Psychology QUESTION #11348

Question 17

As per text, Psychology can most appropriately be defined as the science/study of:

of human psyche
of human and animal behaviour✔️
of mental life
of behaviour disorders

Correct Answer Logic:

Psychology is most appropriately defined as the study of human and animal behaviour.

Uploaded by: Fani Warraich

Reading and Writing (Module-1) QUESTION #10428

Question 18

The editor's ------- cuts trimmed the manuscript from eight hundred pages to a tight three hundred.

timid
ruthless✔️
gentle
sparse

Correct Answer Logic:

Cutting a manuscript by more than half requires aggressive editing, matching 'ruthless.'

Uploaded by: Fani Warraich

MCQs Section QUESTION #4829

Question 19

Select the word nearly similar in meaning to "BAKLAVA"

Stringed instrument
Dessert✔️
Whining dance
Gratuity

Correct Answer Logic:

Baklava is a rich, sweet dessert pastry made of layers of filo dough filled with chopped nuts and sweetened with honey or syrup. It is popular in Middle Eastern and Mediterranean cuisines.

Uploaded by: Fani Warraich

Biology QUESTION #7252

Question 20

Flagellated male gametes are present in all three members of which one of the following sets?

Riccia, Dryopteris and Cycas✔️
Anthoceros, Funaria and Spirogyra
Zygnema, Saprolegnia and Hydrilla
Fucus, Marsilea and Calotropis

Correct Answer Logic:

Riccia (liverwort), Dryopteris (fern), and Cycas (gymnosperm) all produce flagellated (motile) antherozoids. Cycas is notable among gymnosperms for retaining multiflagellate sperms. Calotropis is an angiosperm with non-motile pollen. Spirogyra and Zygnema reproduce by conjugation without flagellated gametes.

Uploaded by: Fani Warraich

More Options

Suggest a Question