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Statistics QUESTION #1990

For the Poisson distribution with parameter $\lambda$, which of the following statements is INCORRECT?

Mean = Variance = $\lambda$
The distribution is always positively skewed for finite $\lambda$
The mgf is $M(t) = e^{\lambda(e^t - 1)}$
As $\lambda \to \infty$, the Poisson distribution approaches the t-distribution✔️

Correct Answer Logic:

The mean, variance, and mgf statements are all correct properties of the Poisson distribution. As $\lambda \to \infty$, the Poisson distribution approaches the NORMAL distribution (not the t-distribution), by the Central Limit Theorem. This is what makes statement (D) incorrect.

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Therapeutics and Patient Care QUESTION #3875

Question 2

What is the first-line pharmacological treatment for a confirmed infestation with \textit{Sarcoptes scabiei}?

Permethrin✔️
Mebendazole
Malathion
Tinidazole

Correct Answer Logic:

Topical permethrin $5\%$ cream is the first-line treatment for scabies, applied to all body surfaces from neck down and washed off after $8$–$14$ hours.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3456

Question 3

'Antioxidants' like Vitamin E and Vitamin C protect the body by:

Increasing sugar levels
Neutralizing free radicals✔️
Building muscle
Killing bacteria

Correct Answer Logic:

They prevent oxidative damage to cells.

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Physics QUESTION #4384

Question 4

When an object attains terminal velocity, its acceleration is:

$9.8\ m/s^2$
Zero✔️
$1\ m/s^2$
$9.8\ m/s^2$ downward

Correct Answer Logic:

At terminal velocity, the net force on the object is zero — drag force equals gravitational force. By Newton's second law: $F_{net} = ma = 0$, so acceleration $a = 0$.

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Agronomy QUESTION #2093

Question 5

Osmotic adjustment in crops under drought stress is the process by which:

Plants shed their leaves to reduce total transpiring surface area
Cells actively accumulate compatible solutes (proline, glycine betaine, soluble sugars, K⁺) in the cytoplasm and vacuole, lowering osmotic potential and maintaining turgor pressure and metabolic function at lower soil water potentials — enabling continued growth and gas exchange✔️
Roots lose their selective permeability, allowing free water movement into depleted cells
Stomata permanently close to prevent any further water loss

Correct Answer Logic:

Osmotic adjustment (osmoregulation) is an active cellular response to water deficit: solutes accumulate without causing toxicity, lowering $\psi_s$ (osmotic potential) and maintaining positive turgor pressure ($\psi_p = \psi_w - \psi_s$) at lower leaf water potentials. This sustains stomatal opening, photosynthesis, root elongation into dry soil, and metabolic processes — a key drought tolerance mechanism quantified by the Pressure-Volume curve.

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Biology QUESTION #4266

Question 6

Which part of the brain controls transition between sleeping and wakefulness?

Medulla oblongata
Cerebellum
Cerebrum
Pons✔️

Correct Answer Logic:

The Pons contains sleep centers and plays a key role in regulating the transition between sleep and wakefulness, including REM sleep.

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CISA QUESTION #1785

Question 7

What is the primary objective of continuous auditing within an IS environment?

To support managers with automated reporting tools✔️
To govern and manage the broader organization
To challenge stated assurances through ongoing automated testing
To coordinate all daily audit team activities

Correct Answer Logic:

Continuous auditing employs ongoing automated testing to verify that security controls and technical modifications remain active and functioning. Tools such as the Security Controls Automation Protocol (SCAP) re-verify installed security configurations after every hotfix, patch, or software update — providing real-time assurance rather than periodic snapshots.

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Geography QUESTION #1240

Question 8

The coarse particles or solidified lava ejected from a volcano are called volcanic:

Bombs✔️
Ash
Dust
None of these

Correct Answer Logic:

Volcanic bombs are large, coarse fragments of solidified or partially solidified lava ejected from a volcano during an eruption. They are typically larger than 64 mm in diameter and acquire a rounded or aerodynamic shape while in flight. Volcanic ash refers to tiny particles (less than 2 mm), and dust refers to the finest particles.

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Islamic Studies QUESTION #642

Question 9

Allama Iqbal delivered his famous "Allahabad Address" in:

1928
1929
1930✔️
1931

Correct Answer Logic:

The address where he proposed a separate state was delivered in 1930.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3358

Question 10

'Binary Fission' is the primary method of reproduction for:

Viruses
Bacteria✔️
Fungi
Humans

Correct Answer Logic:

A single cell splits into two identical daughter cells.

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Urdu QUESTION #5036

Question 11

چاہِ زناخداں کا کیا مطلب ہے؟

ٹھوڑی کا گڑھا✔️
زخم لگنا
رسوائی ہونا
ان میں سے کوئی نہیں

Correct Answer Logic:

چاہِ زناخداں کا مطلب ٹھوڑی میں پڑنے والا گڑھا ہے جسے اردو ادب میں حسن کی علامت سمجھا جاتا ہے۔

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Mechanical Engineering QUESTION #2385

Question 12

The Nyquist stability criterion states that for a closed-loop system to be stable (when open-loop system has $P$ poles in the right-half plane):

The Nyquist plot must encircle the $(-1, j0)$ point clockwise $P$ times
The Nyquist plot must encircle the $(-1, j0)$ point counterclockwise $P$ times✔️
The Nyquist plot must not cross the negative real axis
The Nyquist plot must be a circle

Correct Answer Logic:

Nyquist criterion: $N=Z-P$ where $N$ = clockwise encirclements of $(-1,0)$, $Z$ = closed-loop RHP poles, $P$ = open-loop RHP poles. For stability $Z=0$, so $N=-P$ (i.e., $P$ counterclockwise encirclements).

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Security Measures to Maintain Law and Order QUESTION #916

Question 13

Which is a vital element of a security team's communication strategy?

Using personal mobile devices
Standardized radio protocols✔️
Exclusive use of hand signals
Face-to-face verbalizing only

Correct Answer Logic:

Standardized protocols ensure reliable coordination and rapid response during security incidents.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3425

Question 14

'Hydrogen Bonds' in DNA occur between:

Sugar and Phosphate
Nitrogenous bases✔️
Phosphate and Oxygen
Carbon atoms

Correct Answer Logic:

They hold the two strands of the double helix together.

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General Knowledge QUESTION #2598

Question 15

Before modern keyboards and monitors existed, early computers used which input method to automatically perform calculations without manual data entry?

Magnetic disks
Punch cards✔️
Touchscreens
Optical scanners

Correct Answer Logic:

Punch cards were a sequence of cards with holes in them used to automatically perform calculations instead of manually entering them by hand. They were one of the earliest forms of computer input, used from the 19th century through the 1970s.

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Chemistry QUESTION #439

Question 16

London forces are very significant in __________

Sulphur
Phosphorous
Argon✔️
Sugar

Correct Answer Logic:

London forces dominate in noble gases like Argon

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CISA QUESTION #1793

Question 17

During an application review, an IS auditor encounters activity that may constitute an illegal act. What is the most appropriate course of action?

Disregard the finding as it falls outside the current review scope
Conduct an independent investigation to assist law enforcement
Immediately inform the auditee of the suspected activity
Obtain qualified legal counsel before proceeding further with the audit✔️

Correct Answer Logic:

Detecting illegal activity is outside the auditor's formal mandate; however, the auditor must not ignore the finding. The appropriate response is to seek competent legal advice to understand liability, disclosure obligations, and reporting requirements before taking any further action or communicating the finding to others.

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English QUESTION #823

Question 18

Pick the correct sentence about catching a first glimpse:

A day later he reached his first glimpse of Lahore.
A day later he took his first glimpse of Lahore.
A day later he found his first glimpse of Lahore.
A day later he caught his first glimpse of Lahore.✔️

Correct Answer Logic:

The correct collocation is 'catch a glimpse'. You catch a glimpse of something — not reach, take, or find it.

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English QUESTION #2790

Question 19

Which is the CORRECTLY SPELLED word?

Occured
Occurred✔️
Ocurred
Occurrd

Correct Answer Logic:

The correct spelling is 'Occurred' — the final consonant 'r' is doubled before adding '-ed' because the stress is on the last syllable. Rule: double the final consonant when the syllable is stressed.

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MCQs Section QUESTION #4834

Question 20

Select the word nearly opposite in meaning to "SPUNK"

Success
Timidity✔️
Growing awareness
Loss of prestige

Correct Answer Logic:

Spunk means courage, bravery, or spirit. Its antonym is 'timidity,' which means lack of courage, shyness, or fearfulness.

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