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Maths QUESTION #2815

The average marks of 30 students is 65. If 5 more students with an average of 75 join the class, what is the new average?

66.43
66.67✔️
67.14
68

Correct Answer Logic:

Old total $= 30 \times 65 = 1950$. New total $= 1950 + 5 \times 75 = 1950 + 375 = 2325$. New average $= \dfrac{2325}{35} = 66.43 \approx 66.43$. Exact: $\dfrac{2325}{35} = 66.43$.

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English QUESTION #8494

Question 2862

Select the word SIMILAR in meaning to: NASCENT

Threat
Purpose
Quality
Emerging✔️

Correct Answer Logic:

Nascent means just coming into existence; emerging.

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Islamic Studies QUESTION #7932

Question 2863

The Zaboor was revealed on:

Hazrat Musa
Hazrat Isa
Hazrat Dawood✔️
Hazrat Muhammad (S.A.W)

Correct Answer Logic:

Zaboor (Psalms) was revealed to Hazrat Daud (David) AS. It is one of the four major revealed books in Islam (along with Torah, Gospel, and Quran). The Zaboor contained hymns and prayers praising Allah. Hazrat Daud (AS) was blessed with a beautiful voice and would recite Zaboor, causing birds and mountains to glorify Allah with him.

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English Literature QUESTION #10689

Question 2864

Normal phonological deviations that children make when producing sounds and words during language acquisition are referred to as:

Speech errors
Jargon
Phonological processes✔️
Phonotactics

Correct Answer Logic:

Phonological processes are systematic simplifications that children apply when learning to produce adult speech sounds. Common examples include: cluster reduction ('spoon' → 'poon'), final consonant deletion ('cat' → 'ca'), and assimilation. These are considered normal developmental patterns, not speech disorders. They typically disappear by age 4–5.

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Mathematics QUESTION #11157

Question 2865

$\displaystyle\int_0^1 \frac{4}{1+x^2}\,dx =$

$0$
$\pi$✔️
$\dfrac{4\pi}{3}$
$-\pi$

Correct Answer Logic:

$\displaystyle\int_0^1 \frac{4}{1+x^2}\,dx = 4\left[\arctan x\right]_0^1 = 4\left(\frac{\pi}{4} - 0\right) = \pi$.

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Security Measures to Maintain Law and Order QUESTION #889

Question 2866

Under Section 5, the "Head of the Force" (DG) can issue "Standing Orders" to:

Change the Act
Regulate the Force's discipline✔️
Increase airport taxes
Hire foreign mercenaries

Correct Answer Logic:

Section 5 and 13 allow the DG to issue orders/regulations to maintain the efficient functioning and discipline of the Force.

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Constitutional Law QUESTION #5830

Question 2867

Congress passes a law that prohibits the possession of firearms within 1,000 feet of a school. Does Congress have the power to pass this law?

Yes, under the Commerce Clause, because firearms involve interstate commerce.
Yes, under the Police Power of the federal government.
No, because the law does not involve an activity that 'substantially affects' interstate commerce.✔️
No, because the Second Amendment prohibits all gun-free zone laws.

Correct Answer Logic:

In United States v. Lopez, the Court held that the Gun-Free School Zones Act exceeded Congress's Commerce Clause power because the mere possession of a gun in a school zone is a non-economic activity that does not 'substantially affect' interstate commerce.

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Islamic Studies QUESTION #348

Question 2868

The Pagan Tribe which was allies of the Muslims was:

Banu Asad
Banu Khuza'ah✔️
Banu Khazraj
Banu Bakr

Correct Answer Logic:

Following the Treaty of Hudaybiyyah, Banu Khuza'ah entered into an alliance with the Muslims.+1

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Law QUESTION #9475

Question 2869

A decree was passed on 15 January 2010. The decree-holder made no application for execution until 15 January 2016. The judgment-debtor raises the bar of limitation. The decree-holder claims he was fraudulently prevented by the judgment-debtor from executing the decree from January 2010 to December 2015. Which legal principle resolves this dispute?

The decree-holder can still execute if he proves that the judgment-debtor, by fraud or force, prevented execution within the six years immediately before the application✔️
The decree becomes a nullity after three years of non-execution
The Court has inherent power to condone the delay regardless of the circumstances
The decree is absolutely barred; no exception exists after six years

Correct Answer Logic:

Section 48(2) CPC creates an exception: where the judgment-debtor has by fraud or force prevented the execution of the decree at some time within six years immediately before the date of the application, the Court may allow execution. The decree-holder must prove the fraudulent prevention occurred within the relevant six-year window.

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Biology Zoology Botany QUESTION #10778

Question 2870

Which of the following processes occurs in eukaryotes but NOT in prokaryotes?

Attenuation
Splicing✔️
Mitochondrial RNA
Ribosome

Correct Answer Logic:

RNA splicing occurs in eukaryotes but not prokaryotes. Eukaryotic pre-mRNA contains non-coding introns that must be removed by the spliceosome before translation. Prokaryotes lack introns in their genes (with rare exceptions) and therefore do not require splicing. Mitochondrial RNA synthesis occurs only in eukaryotes (which have mitochondria), but splicing is the more fundamental distinction as a nuclear process.

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Verbal Reasoning QUESTION #8182

Question 2871

A company employs 80 people, each with a different salary. Among these 80 salaries, Mark's salary of \$43,700 is the second-highest in the first quartile. If 8 new employees are hired at salaries below the current minimum salary, what is Mark's new position among the 88 salaries?

The fourth-highest salary in the first quartile
The highest salary in the first quartile
The second-lowest salary in the second quartile
The fifth-lowest salary in the second quartile✔️

Correct Answer Logic:

With 80 employees, the first quartile (Q1) covers the bottom 25%, which is the bottom 20 salaries (positions 1–20). Mark is the 2nd-highest in Q1, meaning he is at position 19 out of 80.

After hiring 8 new employees at the lowest salaries, there are 88 employees. The new employees occupy positions 1–8. Everyone else shifts up by 8 positions.

Mark's new position: $19 + 8 = 27$ out of 88.

New Q1 covers positions 1–22 (bottom 25% of 88). Mark at position 27 is above Q1, now in Q2.

Mark is the 5th from the bottom of Q2 (positions 23, 24, 25, 26, 27 → 5th lowest in Q2).

Answer: The fifth-lowest salary in the second quartile.

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Chemistry QUESTION #1020

Question 2872

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

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Chemistry QUESTION #7384

Question 2873

Which of the following is a WRONG statement about nitrogen's atomic properties?

The electronic configuration of N has incorrect spin assignment in 2p orbitals as shown✔️
An orbital is designated by three quantum numbers; an electron by four
Total orbital angular momentum of an electron in s orbital equals zero
The value of $m$ for $d_{z^2}$ orbital is zero

Correct Answer Logic:

Hund's Rule: In the nitrogen atom, 2p subshell has 3 electrons — each goes into a separate orbital with parallel spins (↑↑↑), NOT with one paired. If the diagram shows pairing in 2p before all orbitals are singly occupied, it violates Hund's rule and is wrong.

Options (2), (3), and (4) are all correct statements. Angular momentum of s-electron = $\sqrt{\ell(\ell+1)}\cdot\dfrac{h}{2\pi} = 0$ since $\ell=0$.

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Geography QUESTION #6313

Question 2874

Von Thünen's agricultural land use model assumes all of the following EXCEPT:

A single central market (isolated state)
Uniform transportation costs per unit distance in all directions✔️
Homogeneous land quality and topography
Farmers maximizing profit by minimizing transportation costs

Correct Answer Logic:

Von Thünen's model assumes transportation costs are proportional to distance AND weight/bulk of products, not uniform per distance. Perishable/bulky items locate closer to market; less perishable/lighter goods locate farther out.

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General Knowledge QUESTION #175

Question 2875

SIFC was created for promoting ________ in Pakistan.

Business
Economy
Investment✔️
None of these

Correct Answer Logic:

The Special Investment Facilitation Council (SIFC) focuses on attracting foreign investment.

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Ability / HR / Governance / Special Education QUESTION #1869

Question 2876

If no suitable domicile-holder is found after advertising a vacancy twice, how can it be filled under Rule 14 proviso?

Permanently on open merit
On open merit on contract initially for one year✔️
Left vacant indefinitely
Filled by deputation

Correct Answer Logic:

Rule 14 proviso states the appointing authority may fill the vacancy on open merit on contract, initially for a period of one year.

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Mathematics QUESTION #7481

Question 2877

The function $f: \mathbb{R} \to [-\frac{1}{2}, \frac{1}{2}]$ defined as $f(x) = \frac{x}{1+x^2}$ is:

Invertible✔️
injective but not surjective
surjective but not injective
neither injective nor surjective

Correct Answer Logic:

For injectivity, suppose $f(x_1) = f(x_2)$. Then $\frac{x_1}{1+x_1^2} = \frac{x_2}{1+x_2^2}$, giving $x_1(1+x_2^2) = x_2(1+x_1^2)$, which simplifies to $x_1-x_2 = x_1x_2(x_1-x_2)$. If $x_1 \neq x_2$, then $1 = x_1x_2$. But checking the derivative: $f'(x) = \frac{1-x^2}{(1+x^2)^2}$. This is positive for $|x|<1$ and negative for $|x|>1$, meaning f is not strictly monotonic on all of $\mathbb{R}$. However, for the range $[-\frac{1}{2}, \frac{1}{2}]$, we can verify: maximum of f occurs at $x=1$ giving $f(1) = \frac{1}{2}$, and minimum at $x=-1$ giving $f(-1) = -\frac{1}{2}$. The function achieves all values in this range, so it's surjective. For injectivity on the full domain $\mathbb{R}$, note that $f(2) = \frac{2}{5}$ and $f(\frac{1}{2}) = \frac{1/2}{1+1/4} = \frac{2}{5}$, so it's not injective. Thus, the answer should be C or D. Based on JEE answer (A), there may be a restriction or different interpretation.

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General Knowledge QUESTION #8713

Question 2878

Which international institution was created through the Rome Statute on July 1, 2002?

Freedom House
International Criminal Court (ICC)✔️
Amnesty International
None of the above

Correct Answer Logic:

The Rome Statute established the International Criminal Court.

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Biology Zoology Botany QUESTION #10806

Question 2879

Immunological destruction of body tissue by antibodies reacting with it as if it were foreign antigen is called:

Anaphylaxis
Autoimmune diseases✔️
Prophylaxis
Immunodeficiency disease

Correct Answer Logic:

Autoimmune diseases occur when the immune system fails to distinguish self from non-self, producing antibodies (autoantibodies) or T-cells that attack the body's own tissues. Examples include rheumatoid arthritis, lupus (SLE), Type 1 diabetes, and multiple sclerosis. Anaphylaxis is a severe hypersensitivity reaction to an external antigen; prophylaxis is disease prevention; immunodeficiency involves reduced immune function.

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English QUESTION #8586

Question 2880

Who had been knocking _______ the door?

At✔️
On
In
Out

Correct Answer Logic:

'Knocking at the door' is standard.

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