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Quantitative Reasoning QUESTION #8017

Choose the word that is most nearly opposite in meaning to ADULTERATION

consternation
purification✔️
normalization
approximation

Correct Answer Logic:

ADULTERATION means the process of making something impure by adding inferior or inappropriate substances. The opposite is making something pure. Purification is correct: adulteration makes things impure, while purification makes things pure—they are direct opposites.

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English QUESTION #8531

Question 4982

The synonym of 'Hypothetical' is:

Speculative✔️
Variable
Real
Assembling

Correct Answer Logic:

Hypothetical means based on speculation or assumption.

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English Literature QUESTION #10720

Question 4983

What new system of printing books was developed in the 1400s?

Block Style Writing
Movable Type✔️
Calligraphy
Computer

Correct Answer Logic:

Movable Type printing was developed by Johannes Gutenberg in the 1440s–1450s in Germany, revolutionising book production. His Gutenberg Bible (~1455) was the first major book printed with this technology. Movable type allowed individual metal letters to be arranged, printed, and rearranged — making mass production of books possible for the first time. In England, William Caxton introduced printing in 1476.

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Chemistry QUESTION #7192

Question 4984

Among the following chemical species, identify the one that is incapable of undergoing a disproportionation reaction.

$BrO_{3}^{-}$
$BrO^{-}$
$BrO_{2}^{-}$
$BrO_{4}^{-}$✔️

Correct Answer Logic:

Disproportionation occurs when an element in a specific oxidation state can be both oxidized and reduced. This requires the element to be in an intermediate oxidation state.

In $BrO_{4}^{-}$, the oxidation state of Bromine is $+7$.
Since $+7$ is the maximum possible oxidation state for Bromine, it cannot be oxidized further.
Therefore, $BrO_{4}^{-}$ cannot undergo disproportionation.

[cite: 13]

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English Literature QUESTION #667

Question 4985

Who is the author of the novel "1984"?

Aldous Huxley
George Orwell✔️
Ray Bradbury
H.G. Wells

Correct Answer Logic:

George Orwell's dystopian masterpiece was published in 1949.

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HR and Management QUESTION #6450

Question 4986

In the context of HRM challenges, 'consistency' is particularly important in:

Marketing and branding decisions
Compensation and promotion decisions✔️
Technology adoption choices
Customer service protocols

Correct Answer Logic:

HR policies help maintain consistency and equity, which is particularly important in compensation and promotion decisions. Without HR department coordination, salary structures become uneven and unfair, and promotion decisions may be handled inequitably.

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Chemistry QUESTION #1105

Question 4987

Which among the following electronic configurations belong to main group elements? A. [Ne]3s$^1$ B. [Ar]3d$^3$4s$^2$ C. [Kr]4d$^{10}$5s$^2$5p$^5$ D. [Ar]3d$^{10}$4s$^1$ E. [Rn]5f$^0$6d$^2$7s$^2$

D and E only
A, C and D only
B and E only
A and C only✔️

Correct Answer Logic:

Main group elements have their valence electrons in s or p orbitals only. A: [Ne]3s$^1$ = Na (Group 1, s-block) ✓. B: [Ar]3d$^3$4s$^2$ = Vanadium (d-block, transition metal) ✗. C: [Kr]4d$^{10}$5s$^2$5p$^5$ = Iodine (Group 17, p-block) ✓. D: [Ar]3d$^{10}$4s$^1$ = Cu (d-block) ✗. E: [Rn]5f$^0$6d$^2$7s$^2$ = Th (d/f-block) ✗. Main group: A and C only.

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Aptitude QUESTION #11028

Question 4988

Which of the following 3D objects CANNOT be obtained by folding the given 2D net? [Net: A cross-shaped arrangement of 6 squares with one square attached to each side of a central square]

Cube
Open box with one face missing
Cube with one face divided into two rectangles✔️
A regular square prism

Correct Answer Logic:

A standard cube net with 6 squares can only form a complete cube or an open box (if one square is conceptually removed). It cannot create a cube with one face divided into two rectangles, as the net has no internal divisions.

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Math Physics Chemistry Biology QUESTION #4314

Question 4989

A person in hot weather is unable to maintain body temperature. Which physiological process has failed?

Vasodilation & sweating✔️
Vasoconstriction
Shivering
Renin secretion

Correct Answer Logic:

In hot weather, the body cools itself through vasodilation (increases heat loss from skin) and sweating (evaporative cooling). Failure of these mechanisms leads to hyperthermia.

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MBBS QUESTION #10343

Question 4990

Under anaerobic conditions (e.g., vigorous exercise, or red blood cells which lack mitochondria entirely), pyruvate generated by glycolysis is converted to lactate by which enzyme, regenerating the NAD+ required to sustain ongoing glycolysis?

Lactate dehydrogenase✔️
Pyruvate dehydrogenase
Pyruvate carboxylase
Pyruvate kinase

Correct Answer Logic:

Lactate dehydrogenase reduces pyruvate to lactate while oxidizing NADH back to NAD+, allowing glycolysis (which requires NAD+ at the glyceraldehyde-3-phosphate dehydrogenase step) to continue functioning even without oxygen or functioning mitochondria.

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General Knowledge QUESTION #2615

Question 4991

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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Islamic Studies QUESTION #8210

Question 4992

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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General Knowledge QUESTION #2630

Question 4993

Which component is described as a 'bridge between the CPU and the RAM' that manages communication between the two?

Northbridge
Southbridge
Memory Controller Chip (MCC)✔️
External Data Bus (EDB)

Correct Answer Logic:

The Memory Controller Chip (MCC) is a bridge between the CPU and the RAM. It manages the flow of data between these two critical components. The address bus then sends the LOCATION of the data from the CPU to the MCC, without sending the data itself.

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MBBS QUESTION #10359

Question 4994

In liver injury, serum ALT and AST (aminotransferases) are commonly measured together, with ALT considered more liver-specific than AST. This is primarily because:

ALT is concentrated mainly in hepatocyte cytosol with relatively low activity elsewhere, while AST is also abundant in cardiac muscle, skeletal muscle, kidney, and red blood cells✔️
AST is found exclusively within the liver, with no activity in any other tissue
ALT has no measurable activity in any organ besides the liver under any circumstance, making it perfectly specific
Both enzymes are equally distributed and equally liver-specific

Correct Answer Logic:

Because AST is present in significant amounts in multiple tissues besides liver (heart, skeletal muscle, kidney, red cells), its elevation is less specific for hepatocellular injury; ALT, being relatively concentrated in the liver, is considered the more liver-specific marker, though both are used together with their ratio to help characterize the pattern of liver disease (e.g., alcoholic hepatitis classically shows AST > ALT).

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General Knowledge QUESTION #8688

Question 4995

An anarchist is a person who:

Loves peace
Does not like any system of government or order✔️
Loves peace
Hates peace

Correct Answer Logic:

An anarchist rejects all forms of compulsory government.

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Mathematics QUESTION #11186

Question 4996

The solution of $y' = \dfrac{x+y}{x}$ is:

$y = x\ln|kx|$✔️
$y = x\ln|x|$
$y = x\ln|kx|$
$y = \ln|x| + k$

Correct Answer Logic:

Rewrite: $y' = 1 + y/x$. This is homogeneous. Let $v = y/x$, so $y = vx$, $y' = v + xv'$. Then $v + xv' = 1+v \Rightarrow xv' = 1 \Rightarrow v' = 1/x \Rightarrow v = \ln|x| + C$. Therefore $y = vx = x(\ln|x|+C) = x\ln|x| + Cx = x\ln|kx|$ where $k = e^C$.

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Chemistry QUESTION #7496

Question 4997

Which of the bromine oxoanion species does NOT undergo disproportionation?

$\text{BrO}_3^-$
$\text{BrO}^-$
$\text{BrO}_2^-$
$\text{BrO}_4^-$✔️

Correct Answer Logic:

Disproportionation occurs when an element in an intermediate oxidation state simultaneously undergoes oxidation and reduction.

$\text{BrO}^-$ (Br = +1): can disproportionate to Br$^-$ ($-1$) and BrO$_3^-$ ($+5$) ✓
$\text{BrO}_2^-$ (Br = +3): can disproportionate to $\text{BrO}^-$ and $\text{BrO}_3^-$ ✓
$\text{BrO}_3^-$ (Br = +5): can disproportionate under certain conditions ✓
$\text{BrO}_4^-$ (Br = +7): Br is in its highest oxidation state for bromine — it cannot be further oxidised, so disproportionation is not possible.

$\text{BrO}_4^-$ does not undergo disproportionation.

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Nursing QUESTION #9190

Question 4998

A Charge Nurse is conducting a study using systematic random sampling from a population of 400 patients. She selects every $k^{th}$ patient after a random start. If the desired sample size is 50, what is the value of $k$?

4
6
8✔️
10

Correct Answer Logic:

Correct Answer: C — $k = 8$

The formula for the sampling interval in systematic random sampling is:

\[k = \frac{N}{n}\]
Where:

$N$ = population size = 400
$n$ = desired sample size = 50

\[k = \frac{400}{50} = 8\]
The nurse randomly selects a starting point between 1 and 8, then selects every 8th patient thereafter (e.g., patient 5, 13, 21, 29...). This method ensures equal probability of selection and is more practical than simple random sampling for large populations.

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Mathematics QUESTION #7434

Question 4999

If the angles of elevation of the top of a tower from three collinear points A, B and C, on a line leading to the foot of the tower, are 30°, 45° and 60° respectively, then the ratio AB : BC is:

$\sqrt{3}:1$✔️
$\sqrt{3}:\sqrt{2}$
$1:\sqrt{3}$
2:03

Correct Answer Logic:

Let the height of tower be $h$ and distances from tower foot be $x_A, x_B, x_C$. From the angles: $\tan(30°) = \frac{h}{x_A}$ gives $x_A = h\sqrt{3}$; $\tan(45°) = \frac{h}{x_B}$ gives $x_B = h$; $\tan(60°) = \frac{h}{x_C}$ gives $x_C = \frac{h}{\sqrt{3}}$. Since points are collinear with C closest to tower: $AB = x_A - x_B = h\sqrt{3} - h = h(\sqrt{3}-1)$ and $BC = x_B - x_C = h - \frac{h}{\sqrt{3}} = h\frac{\sqrt{3}-1}{\sqrt{3}}$. Therefore, $\frac{AB}{BC} = \frac{h(\sqrt{3}-1)}{h\frac{\sqrt{3}-1}{\sqrt{3}}} = \sqrt{3}$. The ratio is $\sqrt{3}:1$.

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Logical Reasoning QUESTION #3933

Question 5000

Select the word that is most nearly the same in meaning to 'MENDACIOUS':

Truthful✔️
Deceptive
Courteous
Intelligent

Correct Answer Logic:

1

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