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Economics QUESTION #1689

The Human Development Index (HDI), published by the UNDP, ranks countries on a normalised scale of:

0 to 1✔️
1 to 100
$-1$ to $+1$
None of these

Correct Answer Logic:

The Human Development Index (HDI) is a composite index measuring average achievements in three key dimensions of human development: (1) long and healthy life (life expectancy), (2) knowledge (education), and (3) decent standard of living (GNI per capita). It is normalised on a scale from 0 (lowest) to 1 (highest). Countries are classified as very high, high, medium, or low human development based on their HDI score.

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General Knowledge QUESTION #2615

Question 2

A Hard Disk Drive (HDD) works by using:

Electronic flash memory chips with no moving parts
A spinning platter and a mechanical arm to read and write information✔️
A network connection to store data in the cloud
Light beams and optical lenses to read data from a disc

Correct Answer Logic:

An HDD (Hard Disk Drive) uses a spinning platter and a mechanical arm to read and write information. The platter spins at high RPM (Revolutions Per Minute) while the arm moves across it to access data.

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Chemistry QUESTION #5531

Question 3

For a reaction obeying the Arrhenius equation in the range $0°C < T < 300°C$: Plot I shows $k$ vs $E_a$ (decreasing curve), Plot II shows $k$ vs $T(°C)$ (increasing curve). Choose the correct option.

I is right but II is wrong
Both I and II are correct✔️
I is wrong but II is right
Both I and II are wrong

Correct Answer Logic:

From Arrhenius equation: $k = Ae^{-E_a/RT}$. As $E_a$ increases (at constant T), $k$ decreases — Plot I (k vs $E_a$ as a decreasing curve) is correct. As T increases (at constant $E_a$), $k$ increases exponentially — Plot II (k vs T as an increasing curve) is correct. Both plots are correct representations.

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General Science and Ability QUESTION #252

Question 4

The minimum amount of vitamin stored in the human body is of:

Vitamin D
Vitamin C✔️
Vitamin E
Vitamin A

Correct Answer Logic:

Water-soluble vitamins like Vitamin C are not stored in large amounts compared to fat-soluble ones.+2

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Accounting & Finance QUESTION #9658

Question 5

When converting Single Entry to Double Entry for a medium-scale entity, Credit Purchases are ascertained through:

The Cash Book payment side
The Debtors Account
The Creditors Account as a balancing figure✔️
The Statement of Affairs

Correct Answer Logic:

Credit Purchases are the balancing figure (missing item) in the Creditors Account. The equation is: Opening Creditors + Credit Purchases = Cash Paid + Discount Received + Returns Outward + Closing Creditors. Solving for Credit Purchases gives the missing figure.

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Reading and Writing (Module-1) QUESTION #10436

Question 6

Responding to accusations that her lectures were disorganized and -------, the professor restructured her syllabus for greater coherence and -------.

muddled . . clarity✔️
engaging . . simplicity
terse . . vagueness
rigorous . . confusion

Correct Answer Logic:

Disorganized lectures are 'muddled,' and restructuring for coherence produces 'clarity.'

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General Knowledge QUESTION #8904

Question 7

The normal body temperature of a healthy human is approximately:

$81.1^\circ \mathrm{C}$
$36.9^\circ \mathrm{C}$✔️
$98.6^\circ \mathrm{F}$ (option not correctly written)
$21.7^\circ \mathrm{C}$

Correct Answer Logic:

Normal body temperature is about 36.9°C or 98.6°F. Option B is 36.9°C.

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General Science and Ability QUESTION #198

Question 8

In fiber structures, light is guided through the core due to total internal:

Reflection✔️
Refraction
Diffraction
None of these

Correct Answer Logic:

Fiber optics work based on Total Internal Reflection (TIR).

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Math Physics Chemistry Biology QUESTION #4252

Question 9

Which structure in neuron is responsible for receiving information from other neurons?

Axon
Soma
Dendrite✔️
Axon terminal

Correct Answer Logic:

Dendrites receive information from other neurons.

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Boilers Mechanical Engineering QUESTION #3998

Question 10

'Draft' (Draught) in a boiler furnace is required to:

Wash the furnace
Provide a continuous supply of air for combustion and remove flue gases✔️
Keep the operator cool
Measure the water level

Correct Answer Logic:

Natural draft is created by the chimney; forced/induced draft uses fans.

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MCQs Section QUESTION #5130

Question 11

دل رکھنا کا کیا مطلب ہے؟

کسی کو ناراض کرنا
کسی کی دل آزاری کرنا
دل کی بیماری کا شکار ہونا
تسلی دینا✔️

Correct Answer Logic:

دل رکھنا محاورے کا مطلب ہے کسی کی تسلی کرنا یا خوش کرنا۔

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Mathematics QUESTION #11179

Question 12

Let $X = \{a,b,c\}$, $\tau = \{\emptyset,\{a\},\{b\},\{a,b\},X\}$. Then $X$ is:

$T_1$-space✔️
Regular space
$T_2$-space
Normal space

Correct Answer Logic:

Check $T_1$: in $T_1$, every singleton must be closed. $\{a\}$ is open, so $\{b,c\}$ is closed. $\{b\}$ is open, so $\{a,c\}$ is closed. But $\{c\}$: its complement $\{a,b\}\in\tau$ is open, so $\{c\}$ is closed. So singletons are closed → $T_1$ holds. Check $T_2$ (Hausdorff): for $a$ and $c$, we need disjoint open sets. The open sets containing $c$ are only $X$, and any open set containing $a$ is $\{a\}$ or $\{a,b\}$ or $X$ — none disjoint from $X$. Not $T_2$. So $X$ is $T_1$.

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CISA QUESTION #6825

Question 13

Subnet Division	Starting IP	Ending IP
Original	192.168.1.1	192.168.1.254
After Split	192.168.1.1	192.168.1.126

An organization subdivides a network into two equal subnets. How many usable IP addresses are LOST in overhead per subnet?

2✔️
3
4

Correct Answer Logic:

When an IP network is subdivided, each resulting subnet requires four specific addresses: network name, starting IP, ending IP, and broadcast IP. However, the network name and broadcast IP cannot be assigned to devices. Therefore, 2 addresses per subnet are consumed in overhead and lost from the usable address space.

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Electronics Engineering QUESTION #11727

Question 14

A contactor rated 400 V AC, 50 A is used to switch a 400 V, 30 kW motor. The full-load current is approximately:

$43\,\text{A}$
$75\,\text{A}$
$43\,\text{A}$ at $\cos\phi = 1$
$54\,\text{A}$ at $\cos\phi = 0.85$, $\eta = 0.9$✔️

Correct Answer Logic:

$I_{FL} = \dfrac{P_{out}}{\sqrt{3} \times V_L \times \cos\phi \times \eta} = \dfrac{30000}{\sqrt{3} \times 400 \times 0.85 \times 0.9} = \dfrac{30000}{529} \approx \mathbf{56.7\,\text{A}}$. The contactor must be rated above this value. Approximately 54 A at typical efficiency/PF is the closest correct calculation here.

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Math Physics Chemistry Biology QUESTION #4319

Question 15

Tissue fluid in a lymphatic system is called:

Plasma
Matrix
Lymph✔️
Blood

Correct Answer Logic:

When tissue fluid (interstitial fluid) enters the lymphatic capillaries, it is called lymph. Lymph is similar in composition to plasma but lacks large plasma proteins.

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Chemistry QUESTION #1435

Question 16

In glycolysis, the enzyme hexokinase catalyzes the conversion of:

Glucose to glucose-6-phosphate✔️
Pyruvate to lactate
Fructose-6-phosphate to fructose-1,6-bisphosphate
None of these

Correct Answer Logic:

Hexokinase is the first enzyme of glycolysis. It catalyzes the phosphorylation of glucose using ATP: $\text{Glucose} + \text{ATP} \xrightarrow{\text{hexokinase}} \text{Glucose-6-phosphate} + \text{ADP}$. This irreversible step traps glucose inside the cell. Phosphofructokinase-1 catalyzes the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate.

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Biology QUESTION #7275

Question 17

Which one of the following is considered most important in the development of seed habit?

Free-living gametophyte
Dependent sporophyte
Heterospory✔️
Haplontic life cycle

Correct Answer Logic:

Heterospory (production of two types of spores — microspores and megaspores) is the most critical precondition for seed habit. The megaspore is retained within the megasporangium, the female gametophyte develops endosporically, and after fertilization it is nourished by the parent plant — essentially forming a seed. This is seen in Selaginella and Salvinia among pteridophytes.

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English QUESTION #8550

Question 18

Water is _______ for life.

Inevitable
Indispensable✔️
Required
Needed

Correct Answer Logic:

Indispensable means absolutely necessary.

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Psychology QUESTION #9723

Question 19

In classical conditioning, the weakening and eventual disappearance of a conditioned response when the conditioned stimulus is repeatedly presented without the unconditioned stimulus is known as:

Spontaneous recovery
Generalization
Discrimination
Extinction✔️

Correct Answer Logic:

Extinction in classical conditioning occurs when the conditioned stimulus (CS) is repeatedly presented without the unconditioned stimulus (UCS), causing the conditioned response (CR) to gradually weaken and disappear. Importantly, extinction does not erase the original learning; spontaneous recovery (re-emergence of the CR after rest) demonstrates the original association is retained in memory.

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Law QUESTION #9699

Question 20

Under Article 121, when an accused claims a General Exception under the Pakistan Penal Code, the burden of proving the existence of circumstances bringing the case within that exception lies:

On the prosecution
On the Court to investigate
On the accused himself✔️
On the witnesses

Correct Answer Logic:

Article 121 places the burden of proving circumstances bringing the case within any General Exception of PPC on the accused, and the Court shall presume the absence of such circumstances.

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