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Chemistry QUESTION #1417

Multilayer adsorption
Uniform surface without interactions between adsorbed molecules✔️
Gas behaves as ideal
None of these

Correct Answer Logic:

The Langmuir adsorption isotherm is based on key assumptions: (1) monolayer adsorption only, (2) the surface is uniform with equivalent adsorption sites, (3) there are no interactions between adsorbed molecules, and (4) each site can hold only one adsorbate molecule. Multilayer adsorption is described by the BET isotherm, not Langmuir.

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English QUESTION #8298

Question 882

Students are advised to write their names _______ ink.

Through
With
In✔️
By

Correct Answer Logic:

'In ink' is the standard phrase.

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Math Physics Chemistry Biology QUESTION #7735

Question 883

Which substance in semen helps facilitate sperm transport by causing uterine contractions?

Androgen
Prostaglandins✔️
Oxytocin
Testosterone

Correct Answer Logic:

Prostaglandins in seminal fluid stimulate smooth muscle contractions in the female reproductive tract, aiding sperm movement toward the egg. Oxytocin is a hormone; androgens/testosterone are male sex hormones.

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English QUESTION #8532

Question 884

The synonym of 'Infinitesimal' is:

Miniscule✔️
Enormous
Distend
Immense

Correct Answer Logic:

Infinitesimal means extremely small; minuscule.

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Verbal Reasoning QUESTION #8168

Question 885

The four coffee types in the FDA caffeine chart have different ranges of caffeine content per 5-oz cup. Arrange them from the smallest range to the largest range of caffeine.

Approximate ranges from the graph — Decaffeinated: 1–5 mg (range ~4); Instant: 40–108 mg (range ~68); Drip-brewed: 60–180 mg (range ~120); Percolated: 40–170 mg (range ~130).

Decaffeinated, Instant, Percolated, Drip-brewed
Decaffeinated, Instant, Drip-brewed, Percolated✔️
Instant, Decaffeinated, Drip-brewed, Percolated
Instant, Drip-brewed, Decaffeinated, Percolated

Correct Answer Logic:

The range is the difference between the maximum and minimum values for each coffee type (per 5-oz cup, based on the FDA graph):

Decaffeinated: approximately 1–5 mg → range ≈ 4 mg (smallest)
Instant: approximately 40–108 mg → range ≈ 68 mg
Drip-brewed: approximately 60–180 mg → range ≈ 120 mg
Percolated: approximately 40–170 mg → range ≈ 130 mg (largest)

Order from least to greatest range: Decaffeinated, Instant, Drip-brewed, Percolated.

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5798

Question 886

An 'Adulterated' drug is one which contains a color other than the one prescribed. True or False?

True✔️
False
Partially True
None of these

Correct Answer Logic:

Adulteration includes using unprescribed coloring agents[cite: 7].

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CISA QUESTION #6818

Question 887

An IS auditor discovers that while a corporate policy document exists and is published on the company website, random employee surveys reveal only 30% can locate it within reasonable time. According to the evidence rule, what is the MOST appropriate audit conclusion?

Policy exists and is compliant
Policy exists but insufficient evidence of effective implementation✔️
Policy requires updating
Policy is satisfactory but employees need training

Correct Answer Logic:

The evidence rule requires that claims be substantiated through verifiable proof. While the policy exists, the inability of 70% of employees to locate it indicates it is not actively used or effectively implemented. Existence alone does not satisfy the evidence requirement—actual use and accessibility must be demonstrated.

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Accounting & Finance QUESTION #6164

Question 888

According to the 'Percentage of Sales' forecasting method, which of the following is generally classified as 'Spontaneous Financing'?

Long Term Bonds
Retained Earnings
Accounts Payable✔️
Mortgage Loans

Correct Answer Logic:

Lesson 05 states that Current Liabilities like Accounts Payable generally grow in proportion to sales and are called Spontaneous Financing.

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English QUESTION #8284

Question 889

We are answerable _______ God.

To✔️
Before
For
Of

Correct Answer Logic:

Answerable takes the preposition 'to' — answerable to someone.

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Chemistry QUESTION #1074

Question 890

Assertion (A): Alkyl iodide (R–I) undergoes S$_N$2 reaction faster than alkyl chloride (R–Cl). Reason (R): Iodine is a better leaving group because of its large size.

A is true but R is false
A is false but R is true
Both A and R are true and R is the correct explanation of A✔️
Both A and R are true but R is not the correct explanation of A

Correct Answer Logic:

Both A and R are true. R–I reacts faster in S$_N$2 than R–Cl because I$^-$ is a much better leaving group — it is larger, more polarizable, and the C–I bond is weaker. The large size of iodine means the C–I bond is longer and weaker, making it easier to break. R correctly explains A.

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Accounting & Finance QUESTION #6125

Question 891

Sales $800,000; Variable costs $480,000; Fixed costs $280,000. What sales revenue is required for a profit of $200,000?

$520,000
$960,000
$1,000,000✔️
$1,200,000

Correct Answer Logic:

Option C ($1,000,000) is correct.

CS ratio = ($800,000 − $480,000) ÷ $800,000 = 40%

Required sales = (Fixed costs + Target profit) ÷ CS ratio = ($280,000 + $200,000) ÷ 0.40 = $1,000,000

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Physics QUESTION #7026

Question 892

When a specific rubber band is elongated by a distance $x$, it produces a restorative force of $F = ax + bx^2$, where $a$ and $b$ are constants. Find the total work done in stretching this rubber band from its equilibrium position to a length $L$.

$\frac{aL^{2}}{2}+\frac{bL^{3}}{3}$✔️
$\frac{1}{2}(\frac{aL^{2}}{2}+\frac{bL^{3}}{3})$
$aL^{2}+bL^{3}$
$\frac{1}{2}(aL)^{2}+bL^{3}$

Correct Answer Logic:

Work done $W$ is calculated by integrating the force over the distance: $W = \int_{0}^{L} (ax + bx^2) dx$. Performing the integration gives $[\frac{ax^2}{2} + \frac{bx^3}{3}]_0^L$, which simplifies to $\frac{aL^2}{2} + \frac{bL^3}{3}$.

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Chemistry QUESTION #1078

Question 893

Statement I: Ferromagnetism is considered as an extreme form of paramagnetism. Statement II: The number of unpaired electrons in Cr$^{2+}$ ion ($Z=24$) is the same as that of Nd$^{3+}$ ion ($Z=60$).

Statement I is true but Statement II is false✔️
Statement I is false but Statement II is true
Both Statement I and Statement II are true
Both Statement I and Statement II are false

Correct Answer Logic:

Statement I is true — ferromagnetism arises from cooperative alignment of magnetic dipoles in domains, and is indeed an extreme form of paramagnetism. Statement II: Cr$^{2+}$ ([Ar]3d$^4$) has 4 unpaired electrons. Nd$^{3+}$ ([Xe]4f$^3$) has 3 unpaired electrons. They are NOT the same. Statement II is false.

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Chemistry QUESTION #5543

Question 894

Which of the following diatomic molecules is expected to show diamagnetic behaviour according to Molecular Orbital Theory?

$C_2$
$N_2$✔️
$O_2$
$S_2$

Correct Answer Logic:

$N_2$ has the electronic configuration $(\sigma_{1s})^2(\sigma^*_{1s})^2(\sigma_{2s})^2(\sigma^*_{2s})^2(\pi_{2p})^4(\sigma_{2p})^2$ — all electrons are paired → diamagnetic. $O_2$ and $S_2$ have unpaired electrons in $\pi^*$ orbitals → paramagnetic. $C_2$ has all electrons paired in $\pi$ orbitals and is also diamagnetic. Both $C_2$ and $N_2$ are diamagnetic, but $N_2$ is the more standard textbook answer.

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Boilers Mechanical Engineering QUESTION #4050

Question 895

'Evaporative Capacity' of a boiler is expressed in:

$kg$ of steam produced per hour✔️
$Degrees$ Celsius
$psi$
$Liters$ of fuel

Correct Answer Logic:

It defines how much steam the boiler can generate under specific conditions.

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Chemistry QUESTION #7534

Question 896

Find the oxidation states of Cr in $[\text{Cr(H}_2\text{O)}_6]\text{Cl}_3$, $[\text{Cr(C}_6\text{H}_6)_2]$, and $\text{K}_2[\text{Cr(CN)}_2(\text{O})_2(\text{O}_2)(\text{NH}_3)]$ respectively.

+3, 0, and +6✔️
+3, 0, and +4
+3, +4, and +6
+3, +2, and +4

Correct Answer Logic:

$[\text{Cr(H}_2\text{O)}_6]\text{Cl}_3$: H$_2$O is neutral, Cl$^-$ is $-1$, complex has charge 3+. So Cr = +3.

$[\text{Cr(C}_6\text{H}_6)_2]$: Benzene is a neutral ligand (0 charge). Complex is neutral. So Cr = 0.

$\text{K}_2[\text{Cr(CN)}_2(\text{O})_2(\text{O}_2)(\text{NH}_3)]$: K$^+$ gives $+2$ outside; complex ion has $-2$ charge. CN$^-$ ($-1$ each, $2\times-1=-2$); O$^{2-}$ ($-2$ each, $2\times-2=-4$); O$_2^{2-}$ (peroxo, $-2$); NH$_3$ (0). Let Cr = $x$: $x + (-2) + (-4) + (-2) + 0 = -2 \Rightarrow x - 8 = -2 \Rightarrow x = +6$.

Oxidation states: +3, 0, +6.

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Reading and Writing (Module-1) QUESTION #5421

Question 897

While researching a topic, a student has taken the following notes: • Soo Sunny Park is a Korean American artist who uses light as her primary medium of expression. • She created her work Unwoven Light in 2013. • Unwoven Light featured a chain-link fence fitted with iridescent plexiglass tiles. • When light passed through the fence, colorful prisms formed. The student wants to describe Unwoven Light to an audience unfamiliar with Soo Sunny Park. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Park's 2013 installation Unwoven Light, which included a chain-link fence and iridescent tiles made from plexiglass, featured light as its primary medium of expression.
Korean American light artist Soo Sunny Park created Unwoven Light in 2013.
The chain-link fence in Soo Sunny Park's Unwoven Light was fitted with tiles made from iridescent plexiglass.
In Unwoven Light, a 2013 work by Korean American artist Soo Sunny Park, light formed colorful prisms as it passed through a fence Park had fitted with iridescent tiles.✔️

Correct Answer Logic:

This choice identifies Park, dates the work, and describes what made it distinctive (colorful prisms from light through iridescent tiles).

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Accounting & Finance QUESTION #6138

Question 898

Purchases ledger control account balance: $8,232. Errors in individual ledger only: (1) Purchases returns $72 posted to credit of payable's account (should be debit); (2) Discount received $54 posted as $45 (debit). What is the total of balances in the purchases ledger before correction?

$8,079
$8,097
$8,367
$8,385✔️

Correct Answer Logic:

Option D ($8,385) is correct.

Error 1: Returns $72 credited instead of debited → payable's balance overstated by $144 (wrong side = double error).

Error 2: Discount posted as $45 instead of $54 → understated by $9.

Ledger total = $8,232 + $144 + $9 = $8,385

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Logical Reasoning QUESTION #4430

Question 899

The virus spreads rapidly in the town. It infected the people — First day: $8$, Second day: $16$, Third day: $32$. What will the number of infected people be on the next day?

44 people
56 people
64 people✔️
74 people

Correct Answer Logic:

The number of infected people doubles each day: $8 \rightarrow 16 \rightarrow 32 \rightarrow\ ?$. This is a geometric progression with common ratio $r = 2$. Next term $= 32 \times 2 = 64$ people.

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Nursing QUESTION #9188

Question 900

A Head Nurse is reviewing a study that reports: p = 0.03 with a significance level set at $\alpha = 0.05$. Which conclusion is correct?

Fail to reject the null hypothesis; the result is not significant
Reject the null hypothesis; the result is statistically significant✔️
Accept the null hypothesis unconditionally
The result is clinically significant but not statistically significant

Correct Answer Logic:

Correct Answer: B

Decision rule for hypothesis testing:

If $p \leq \alpha$: Reject the null hypothesis $(H_0)$
If $p > \alpha$: Fail to reject the null hypothesis

Here, $p = 0.03 \leq \alpha = 0.05$, so we reject $H_0$.

Important note: Statistical significance does not automatically mean clinical significance. A nurse must also evaluate effect size and practical relevance. Saying 'accept the null hypothesis' is incorrect terminology in research — we only ever reject or fail to reject it.

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