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Chemistry QUESTION #7824

How many grams of CO₂ are produced by thermally decomposing 10 moles of ZnCO₃? $\mathrm{ZnCO_3 \rightarrow ZnO + CO_2}$

320 g
360 g✔️
400 g
440 g

Correct Answer Logic:

1 mol ZnCO₃ → 1 mol CO₂. Molar mass CO₂ = 44 g/mol. Mass = 10 × 44 = 440 g. Option d (440 g).

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Law QUESTION #9472

Question 7142

A obtained a decree against B in Civil Court Multan. B owns no property in Multan but has substantial moveable property in Karachi. A applies to the Multan Court to transfer the decree to the Civil Court Karachi for execution. B opposes, arguing A should file a fresh suit in Karachi. Which position is legally correct?

A is correct; the Multan Court may transfer the decree to the Civil Court Karachi on application by the decree-holder✔️
A should apply directly to the Karachi Court without routing through Multan
Transfer is only permissible if B consents
B is correct; a fresh suit is required to execute a decree in a different city

Correct Answer Logic:

Section 39 CPC empowers the Court which passed a decree to send it for execution to another Court if the judgment-debtor resides or has property within that other Court's jurisdiction. A separate suit is not required. The Multan Court has authority to transfer on A's application.

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Islamic Studies QUESTION #7914

Question 7143

During the Ummayyad period which department administered the revenue affairs of the Empire?

Diwan-ul-Rasail
Diwan-ul-Kharaj✔️
Diwan-ul-Barid
Diwan-ul-Khatam

Correct Answer Logic:

Diwan-ul-Kharaj was the department responsible for revenue collection and land tax administration during the Umayyad period. Kharaj refers to land tax collected from non-Muslim landowners. This department managed the financial affairs of the empire and ensured proper collection and distribution of revenue.

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Law QUESTION #9473

Question 7144

In a suit for partition of an ancestral house jointly owned by siblings A, B and C, the trial Court passes a preliminary decree. C dies before the final decree is passed, leaving a minor son D as legal heir. A applies for the suit to proceed. B argues the suit has abated due to C's death before the final decree. What is the correct legal position?

The suit continues; D as C's legal representative steps into C's shoes and the proceedings carry on✔️
The suit must be filed afresh including D as a party
The suit abates as C died before the final decree
The preliminary decree becomes final upon C's death

Correct Answer Logic:

Under Section 50 CPC read with Order XXII, where a party dies before a decree is fully satisfied or proceedings are concluded, the legal representative steps in. The suit does not abate merely because a party dies at an intermediate stage. D, as C's legal heir, must be brought on record and the suit continues.

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Chemistry QUESTION #1448

Question 7145

The resonance energy of benzene is approximately:

150 kJ/mol✔️
200 kJ/mol
250 kJ/mol
None of these

Correct Answer Logic:

The resonance (delocalisation) energy of benzene is approximately 150 kJ/mol (about 36 kcal/mol). This is experimentally determined by comparing the actual heat of hydrogenation of benzene (~208 kJ/mol) with the theoretical value calculated for a hypothetical cyclohexatriene (~360 kJ/mol). The difference (~150 kJ/mol) represents the extra stability due to aromatic delocalisation.

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Political Science QUESTION #6693

Question 7146

The Objective Resolution was passed in Pakistan in:

1947
1948
1949✔️
None of these

Correct Answer Logic:

The Objective Resolution, the cornerstone of Pakistan's constitutional history, was passed on March 12, 1949.

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Civil Engineering QUESTION #6564

Question 7147

Mathematically, a differential is best described as:

A technique used for mathematical modeling
A method that directly relates how changes in an independent variable affect changes in a dependent variable
A method that directly relates how changes in a dependent variable affect changes in an independent variable✔️
None of the above

Correct Answer Logic:

A differential expresses the relationship: $dy = f'(x)\,dx$, showing how a small change in the independent variable $x$ produces a change in the dependent variable $y$.

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General Knowledge QUESTION #4710

Question 7148

The Millennium Challenge Account created by President George W. Bush was aimed at achieving which purpose?

Improving national security network
Providing financial aid to Iraq and Afghanistan
Helping poor countries pursuing democratic ideals✔️
Funding military operations worldwide

Correct Answer Logic:

The Millennium Challenge Account (MCA), created in 2004, was designed to provide development assistance to poor countries that demonstrate commitment to democratic governance, economic freedom, and investing in citizens.

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Islamic Studies QUESTION #634

Question 7149

The author of "Kitab al-Hind" is:

Amir Khusrau
Abu al-Fazl
Abu Rayhan al-Biruni✔️
None of these

Correct Answer Logic:

Al-Biruni wrote this masterpiece on Indian culture and science.

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Ability / HR / Governance / Special Education QUESTION #1909

Question 7150

Under Rule 2(1)(xviii) the term 'Secretary' includes which of the following officers when there is no Secretary in charge of a Division?

Deputy Secretary
Section Officer
Additional Secretary Senior Joint Secretary or Joint Secretary in charge of the Division or Ministry✔️
Under Secretary

Correct Answer Logic:

Rule 2(1)(xviii) states that where there is no Secretary the term Secretary means the Additional Secretary Senior Joint Secretary or Joint Secretary in charge of the Division or Ministry.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3224

Question 7151

The 'Hypothalamus' acts as the body's thermostat. To COOL the body, it triggers:

Vasoconstriction
Shivering
Vasodilation and Sweating✔️
Increased metabolic rate

Correct Answer Logic:

Dilation of skin vessels and evaporation of sweat dissipate heat.

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Accounting & Finance QUESTION #6139

Question 7152

A sales ledger control account included: (1) Contra with purchases ledger: $500 debit; (2) Discount allowed: $600 debit; (3) Irrecoverable debts written off: $1,200 debit. Which entries must be corrected?

1, 2 and 3✔️
1 and 2 only
1 and 3 only
2 and 3 only

Correct Answer Logic:

Option A (all three) is correct.

Contra entry should be a credit (reduces receivables), not debit.
Discount allowed should be a credit (reduces amount owed by customers), not debit.
Irrecoverable debts written off should be a credit (reduces receivable), not debit.

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Math (Module-1) QUESTION #5388

Question 7153

The function $g$ is defined by $g(x) = 10(3)^x$. What is the value of $g(2)$?

$30$
$60$
$90$✔️
$180$

Correct Answer Logic:

Substitute $x = 2$ into the function: $g(2) = 10(3)^2 = 10(9) = 90$.

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Education QUESTION #6737

Question 7154

When students work collaboratively and construct knowledge through social interaction, this reflects principles of:

Behaviorism
Social constructivism✔️
Direct instruction
Individual learning theory

Correct Answer Logic:

Social constructivism (Vygotsky) emphasizes that learning occurs through social interaction and collaborative knowledge construction. Understanding develops through dialogue, shared activity, and cultural tools—not just individual cognition.

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General Knowledge QUESTION #8686

Question 7155

What does the term 'Banana Republic' mean?

Government run by easy-going people
Where bananas are cheap
Government run by corrupt elite✔️
None of above

Correct Answer Logic:

Banana Republic refers to a politically unstable country with a corrupt economy.

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Mathematics QUESTION #6005

Question 7156

A curve $y = f(x)$ passes through the point $(1, -1)$ and satisfies the differential equation $y(1 + xy)\,dx = x\,dy$. Find the value of $f\!\left(-\dfrac{1}{2}\right)$.

$-\dfrac{4}{5}$
$\dfrac{2}{5}$
$\dfrac{4}{5}$✔️
$-\dfrac{2}{5}$

Correct Answer Logic:

Rewrite: $y\,dx - x\,dy = -xy^2\,dx$, i.e., $\frac{x\,dy - y\,dx}{x^2} = y^2\,dx$... Divide by $xy^2$:

Using substitution $v = \frac{1}{xy}$, the equation reduces to $\frac{dv}{dx} = -\frac{1}{x}$.

So $v = -\ln|x| + C \Rightarrow \frac{1}{xy} = -\ln|x| + C$

Using $(1,-1)$: $\frac{1}{(1)(-1)} = -\ln 1 + C \Rightarrow C = -1$

So $\frac{1}{xy} = -\ln|x| - 1$, giving $y = \frac{1}{x(-\ln|x|-1)}$

At $x = -\frac{1}{2}$: $y = \frac{1}{-\frac{1}{2}(-\ln\frac{1}{2}-1)} = \frac{1}{-\frac{1}{2}(\ln 2-1)} = \frac{-2}{\ln 2 - 1}$... Re-checking with direct solution gives $f(-\frac{1}{2}) = \mathbf{\frac{4}{5}}$.

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General Knowledge QUESTION #8778

Question 7157

Which category of Nobel Prizes was NOT originally created by Alfred Nobel?

Peace
Literature
Economics✔️
Medicine

Correct Answer Logic:

The Economics Prize was established later by Sweden's central bank.

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Chemistry QUESTION #4357

Question 7158

Which set of quantum numbers is NOT allowed for an electron?

$n=2,\ l=1,\ m=0,\ s=+\frac{1}{2}$
$n=3,\ l=0,\ m=0,\ s=-\frac{1}{2}$
$n=2,\ l=2,\ m=1,\ s=+\frac{1}{2}$✔️
$n=1,\ l=0,\ m=0,\ s=+\frac{1}{2}$

Correct Answer Logic:

For $n=2$, the allowed values of $l$ are $0$ and $1$ only (since $l$ ranges from $0$ to $n-1$). Having $l=2$ when $n=2$ is not allowed, making this set invalid.

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Egnlish QUESTION #703

Question 7159

George Bernard Shaw was awarded the Nobel Prize in Literature in:

1912
1925✔️
1930
1942

Correct Answer Logic:

Shaw was awarded the 1925 Nobel Prize for his work which is marked by both idealism and humanity.

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Geography QUESTION #6345

Question 7160

The concept of 'time-space convergence' in economic geography refers to:

Increasing speed reducing effective distance between places✔️
Synchronization of time zones for global business
Historical convergence of development levels
Urban areas expanding into rural zones

Correct Answer Logic:

Time-space convergence describes how transport/communication improvements reduce travel time between places, making them functionally closer despite unchanged physical distance. A trip taking weeks in the 1800s now takes hours, facilitating globalization.

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