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Mathematics QUESTION #4113

Let $\varphi: \mathbb{Z}_6 \to \mathbb{Z}_6$ be a group homomorphism. If $\varphi$ is one-to-one (injective), what is $|\ker(\varphi)|$?

$0$
$1$✔️
$6$
$\text{Not determined}$

Correct Answer Logic:

For injective homomorphism, kernel contains only identity element. So $|\ker(\varphi)| = 1$.

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Physics QUESTION #7071

Question 5382

Two Carnot engines, A and B, operate in series. Engine A receives heat at $T_1 = 600 \text{ K}$ and rejects it to a reservoir at $T_2$. Engine B receives this rejected heat and rejects it to a sink at $T_3 = 400 \text{ K}$. If both engines produce the same amount of work, find $T_2$.

$600 \text{ K}$
$400 \text{ K}$
$300 \text{ K}$
$500 \text{ K}$✔️

Correct Answer Logic:

For two Carnot engines in series where the work output is equal ($W_A = W_B$):

$Q_1 - Q_2 = Q_2 - Q_3$

Since $Q \propto T$ for a Carnot cycle, we can write:
$T_1 - T_2 = T_2 - T_3$

Rearranging for $T_2$:
$2T_2 = T_1 + T_3 \implies T_2 = \frac{600 + 400}{2} = 500 \text{ K}$.

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MBBS QUESTION #10279

Question 5383

Bilateral destructive lesions of the ventromedial nucleus of the hypothalamus (the 'satiety center') classically result in:

Hyperphagia and progressive obesity, due to loss of the normal satiety signal✔️
Severe anorexia and weight loss
Complete abolition of the thirst sensation
Permanent hypothermia with no effect on appetite

Correct Answer Logic:

The ventromedial hypothalamic nucleus normally signals satiety and inhibits further feeding; its destruction removes this 'stop eating' signal, producing unchecked hyperphagia and obesity — the opposite effect to lesions of the lateral hypothalamic ('feeding center'), which cause aphagia.

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Security Measures to Maintain Law and Order QUESTION #881

Question 5384

The "Incident Command System" (ICS) is used by ASF to:

Track staff leave
Organize a modular emergency response✔️
Check passenger IDs
Manage the canteen

Correct Answer Logic:

ICS is a standardized hierarchy that allows for a flexible response to incidents of any size.

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Islamic Studies QUESTION #8210

Question 5385

Pick out the name of the prayer which is preceded by Azaan?

Namaz I Janaza
Eid ul Fitr
Eid ul Azha
Zuhar Prayer✔️

Correct Answer Logic:

Zuhr Prayer (and all five daily obligatory prayers) are preceded by Adhan (call to prayer). Eid prayers and Janaza (funeral) prayer are not preceded by Adhan. For Eid prayers, there is a different announcement: 'As-Salatu Jami'ah' (Prayer is about to begin). The five daily prayers (Fajr, Zuhr, Asr, Maghrib, Isha) all require Adhan to announce their times, followed by Iqamah (second call) immediately before the prayer begins.

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CISA QUESTION #1775

Question 5386

Which categories of risk are of greatest relevance to an IS auditor?

Control, detection, noncompliance, risk of strike
Inherent, noninherent, control, lack of control
Sampling, control, detection, inherent✔️
Unknown, quantifiable, cumulative

Correct Answer Logic:

The risk types most relevant to IS auditing are sampling risk, control risk, detection risk, and inherent risk. Options referencing 'risk of strike,' 'noninherent,' 'unknown,' 'quantifiable,' and 'cumulative' are not standard IS audit risk categories and serve as distractors.

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Statistics QUESTION #2013

Question 5387

The relative efficiency (RE) of a Completely Randomized Design (CRD) relative to an RCB design is used to indicate:

Whether the F-test is significant
How many times more observations CRD would need to achieve the same precision as RCB✔️
The ratio of treatment means in both designs
The difference in error degrees of freedom between designs

Correct Answer Logic:

Relative efficiency $RE = \dfrac{MS_E(\text{CRD})}{MS_E(\text{RCB})}$ estimates how many times more replications a CRD would need to attain the same precision as the RCB design. An $RE > 1$ indicates blocking was effective in reducing error variance, justifying the use of the RCB design.

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Maths QUESTION #4602

Question 5388

Solve: $5x = 35$

$x = 7$✔️
$x = 30$
$x = 40$
$x = 175$

Correct Answer Logic:

Divide both sides by $5$: $x = \frac{35}{5} = 7$

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Civil Procedure QUESTION #5671

Question 5389

Under Rule 11, a motion for sanctions is served on the opposing party. The opposing party has how many days to withdraw or correct the challenged paper before the motion can be filed with the court?

14 days.
21 days.✔️
28 days.
30 days.

Correct Answer Logic:

Rule 11(c)(2) provides a 'safe harbor' period of 21 days after service for the challenged paper to be withdrawn or appropriately corrected.

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General Knowledge QUESTION #4694

Question 5390

The headquarters of the Asian Development Bank (ADB) is located in which city?

Tokyo
Bangkok
Manila✔️
Jakarta

Correct Answer Logic:

The Asian Development Bank (ADB), established in 1966, has its headquarters in Mandaluyong, Metro Manila, Philippines.

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MCQs Section QUESTION #5064

Question 5391

'پتا پتا بوٹا بوٹا' والا شعر کس کا ہے؟

علامہ اقبال
میر تقی میر✔️
غالب
ان میں سے کوئی نہیں

Correct Answer Logic:

پتا پتا بوٹا بوٹا حال ہمارا جانے ہے، یہ مشہور شعر میر تقی میر کا ہے۔

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Reading and Writing (Module-1) QUESTION #10477

Question 5392

The factory, once bustling with activity, is now entirely -------, standing as a rusting monument to the town's ------- industry.

operational . . thriving
defunct . . vanished✔️
productive . . flourishing
active . . growing

Correct Answer Logic:

A factory no longer operating is 'defunct,' a reminder of the town's 'vanished' industry.

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Agronomy QUESTION #2043

Question 5393

The term 'luxury consumption' of nutrients by plants refers to:

Deficiency symptoms appearing despite adequate soil nutrient levels
Uptake of a nutrient above the level required for maximum growth when that nutrient is in excess supply, without proportional increase in yield✔️
The process of active transport of nutrients against concentration gradients
The preferential uptake of macronutrients over micronutrients

Correct Answer Logic:

Luxury consumption occurs when a nutrient is present in excess — the plant absorbs more than needed for maximum growth without a corresponding yield increase. Potassium is the classic example: plants absorb K above requirements when soil K is high, which can induce Mg and Ca deficiencies (antagonism) and waste fertilizer.

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Business, Public administration and Policy QUESTION #10516

Question 5394

Behaviorism as a school of thought is most closely associated with which discipline?

Economics
Politics
Psychology✔️
None of these

Correct Answer Logic:

Behaviorism is a school of thought in Psychology, associated with John B. Watson, B.F. Skinner, and Ivan Pavlov. It holds that behavior can be explained in terms of conditioning and stimulus-response mechanisms, rejecting the study of unobservable mental states. In public administration, behavioral insights have influenced nudge theory and evidence-based policy design.

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Psychology QUESTION #9752

Question 5395

For a hungry individual, food would most appropriately be classified as a:

Primary reinforcer✔️
Secondary reinforcer
None of these
Neutral stimulus

Correct Answer Logic:

A primary reinforcer directly satisfies a biological need without prior learning. Food satisfies the biological drive of hunger immediately, making it a primary — not secondary — reinforcer.

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Maths QUESTION #2811

Question 5396

A student scored 540 marks out of 750. What percentage did the student score?

68%
70%
72%✔️
75%

Correct Answer Logic:

Percentage $= \dfrac{540}{750} \times 100 = \dfrac{54000}{750} = 72\%$.

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Chemistry QUESTION #5580

Question 5397

PCC (Pyridinium chlorochromate) is the most suitable reagent for the oxidation of primary alcohols to aldehydes ($R-CH_2-OH \to R-CHO$) because:

$CrO_3$ oxidizes further to carboxylic acid
PCC selectively stops at the aldehyde stage✔️
$KMnO_4$ is too mild a reagent
$K_2Cr_2O_7$ is selective for aldehydes

Correct Answer Logic:

PCC (Pyridinium chlorochromate, $C_5H_5NH^+CrO_3Cl^-$) is a mild oxidizing agent that converts primary alcohols to aldehydes without over-oxidizing to carboxylic acids. $CrO_3$, $K_2Cr_2O_7$, and $KMnO_4$ are stronger oxidants that convert primary alcohols all the way to carboxylic acids. PCC is the most suitable reagent for $R-CH_2OH \to R-CHO$.

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Security Measures to Maintain Law and Order QUESTION #835

Question 5398

When maintaining order, an ASF officer may arrest a person without a warrant if the offense is:

Non-cognizable
Administrative
Cognizable✔️
Only if it involves a weapon

Correct Answer Logic:

Under Section 7(2), an officer may arrest without warrant any person involved in a cognizable offense within airport limits.

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General Knowledge QUESTION #8801

Question 5399

Marty Cooper is known for inventing which device?

Digital Computer
AIDS Vaccine
Mobile Phone✔️
Solar Energy

Correct Answer Logic:

Martin Cooper invented the first mobile phone.

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English QUESTION #11597

Question 5400

I enjoy being _____ for brief periods of time.

lone
lonely
alone✔️
None of these

Correct Answer Logic:

Alone means being by oneself, without necessarily implying sadness. Lonely carries an emotional connotation of feeling sad due to lack of company — the sentence implies the speaker enjoys it, so loneliness is wrong. Lone is an attributive adjective used before a noun (e.g., “a lone wolf”) and cannot be used predicatively here.

Correct Answer: C — alone.

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