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Physics QUESTION #7845
Question 1

Reverse-biased PN junction reverse current is of order:

  • Gigaamperes
  • Kiloamperes
  • Megaamperes
  • Microamperesβœ”οΈ
Correct Answer Logic:

Reverse saturation current is very small (ΞΌA range for Si).

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Correct Answer Logic:
Using continuity equation: A?v? = A?v?
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MCQs Section QUESTION #4837
Question 3
Pick the word nearly similar in meaning to "ANATHEMA"
  • Curseβœ”οΈ
  • Cure
  • Anemia
  • Asthma
Correct Answer Logic:
Anathema means a formal curse or something or someone greatly detested or loathed. Example: Corruption is anathema to good governance.
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Mathematics QUESTION #11226
Question 4
The period of $3\cos\dfrac{x}{5}$ is:
  • $2\pi$
  • $\dfrac{2\pi}{5}$
  • $6\pi$
  • $10\pi$βœ”οΈ
Correct Answer Logic:
The period of $\cos(bx)$ is $\dfrac{2\pi}{|b|}$. Here $b = \dfrac{1}{5}$, so the period of $3\cos\dfrac{x}{5}$ is $\dfrac{2\pi}{1/5} = 10\pi$.
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Correct Answer Logic:

Option C is correct.

Current asset: Annual rent = 12 × $500 = $6,000; Received $5,500; Accrued = $500.

Current liability: The $500 deposit must be returned to the tenant β€” it is not income, it is a liability owed to the tenant = $500.

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General Knowledge QUESTION #8682
Question 6
What does 'bonanza' mean?
  • A situation where large profits are madeβœ”οΈ
  • Poor performance
  • Boneless meat
  • None of above
Correct Answer Logic:
Bonanza means a sudden wealth or good fortune.
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Correct Answer Logic:
In Selye's General Adaptation Syndrome (GAS), the Exhaustion stage is the third and final stage, occurring when prolonged stress has depleted the body's adaptive resources. The immune system weakens, and the individual becomes highly susceptible to disease, physical breakdown, and even death. The three stages are: (1) Alarm (initial 'fight or flight'), (2) Resistance (coping and adaptation), and (3) Exhaustion (resource depletion).
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Dairy Food Science and Technology QUESTION #5967
Question 8
What is the primary milk compositional factor that MOST significantly reduces heat stability?
  • High fat content
  • Elevated ionic calcium (\(\text{Ca}^{2+}\)) concentration and low \(\text{pH}\)βœ”οΈ
  • High lactose content
  • High casein micelle size
Correct Answer Logic:
Ionic calcium concentration is the most critical factor affecting milk heat stability. Excess \(\text{Ca}^{2+}\) destabilizes casein micelles under heat by reducing surface charge and promoting cross-linking. Maximum heat stability occurs at \(\text{pH}\;6.7\text{–}6.9\) for UHT.
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Chemistry QUESTION #7162
Question 9
Which of the following chemical equations is correctly balanced and shows the right products?
  • $[Mg(H_{2}O)_{6}]^{2+} + (EDTA)^{4-} \rightarrow [Mg(EDTA)]^{2-} + 6H_{2}O$βœ”οΈ
  • $CuSO_{4} + 4KCN \rightarrow K_{2}[Cu(CN)_{4}] + K_{2}SO_{4}$
  • $Li_{2}O + 2KCl \rightarrow 2LiCl + K_{2}O$
  • $CO + 2H_{2} \xrightarrow{catalyst} CH_{3}OH$
Correct Answer Logic:
Option 1 is the correct representation of a complexometric reaction where the polydentate ligand EDTA replaces the water molecules coordinated to Magnesium. Note that the charge on the resulting complex is correctly balanced as $2 + (-4) = -2$.
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Accounting Finance and Punjab Sales Tax on Services QUESTION #2577
Question 10
Under the Offences and Penalties Schedule Entry No. 24, where a person refuses to RECEIVE any notice or order issued by an officer of the Authority, the penalty is:
  • Twenty thousand rupees fixed
  • Fifty thousand rupees or one hundred percent of the tax payable for the tax period to which the offence relates, whichever is higherβœ”οΈ
  • One hundred thousand rupees fixed
  • Ten percent of the tax payable
Correct Answer Logic:
Entry No. 24 provides that where any person refuses to receive any notice or order, such person shall be liable to pay a penalty of FIFTY THOUSAND RUPEES OR ONE HUNDRED PERCENT of the tax payable for the tax period to which the offence relates, whichever is HIGHER.
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Chemistry QUESTION #1429
Question 11
Lattice enthalpy is always:
  • Positive and represents energy absorptionβœ”οΈ
  • Positive and represents energy release
  • Negative and represents energy absorption
  • Negative and represents energy release
Correct Answer Logic:
Lattice enthalpy (lattice dissociation energy) is defined as the energy required to completely separate one mole of a solid ionic compound into its gaseous ions. Since energy must be absorbed to overcome the strong electrostatic attractions, lattice enthalpy is always positive (endothermic). Lattice formation enthalpy (reverse process) is always negative.
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English QUESTION #2674
Question 12
What does the idiom 'Under the weather' mean?
  • To be in the rain
  • To feel sickβœ”οΈ
  • To be cold
  • To feel happy
Correct Answer Logic:
To feel 'under the weather' means to feel unwell or slightly ill.
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CISA QUESTION #6863
Question 13
In reviewing a software development life cycle, an auditor finds that security requirements are addressed only during final testing phase before production deployment. What is the MOST significant consequence?
  • Delayed security implementation
  • Security issues discovered late are expensive to fix and may require fundamental redesignβœ”οΈ
  • Incomplete security coverage
  • Rushed implementation
Correct Answer Logic:
Security must be integrated throughout SDLC from requirements through design, development, and testing. Addressing security only at final testing means security flaws in architecture or design require expensive changes or workarounds. This 'bolted-on' security is less effective and more costly than security designed in from the start.
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FIA Act QUESTION #9968
Question 14
For purposes of exercising powers of an officer-in-charge, 'Police Station' includes:
  • Only regular police stations
  • Places declared by the Federal Government to be a Police Stationβœ”οΈ
  • Any FIA office regardless of notification
  • Only provincial headquarters
Correct Answer Logic:
Section 5(4) extends 'Police Station' to places so declared by the Federal Government.
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Correct Answer Logic:
'Unearthed' literally means dug up from the ground. Figuratively, it means to discover or bring to light something hidden or unknown. 'Exposed' best captures this meaning β€” revealing hidden irregularities.
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Nursing QUESTION #9251
Question 16
Which tool is used by ICU nurses to assess delirium in mechanically ventilated patients?
  • Mini-Mental State Examination (MMSE)
  • Confusion Assessment Method for ICU (CAM-ICU)βœ”οΈ
  • Abbreviated Mental Test Score (AMTS)
  • Richmond Agitation-Sedation Scale (RASS)
Correct Answer Logic:
Correct Answer: B β€” CAM-ICU

The CAM-ICU (Confusion Assessment Method for the ICU) is the gold-standard bedside tool for delirium assessment in ICU patients, including those on mechanical ventilation who cannot speak.

CAM-ICU has FOUR features:
  1. Acute onset or fluctuating course of mental status
  2. Inattention β€” patient cannot follow commands or complete attention tests
  3. Altered level of consciousness β€” RASS other than zero
  4. Disorganized thinking β€” cannot answer logic questions or follow commands
CAM-ICU positive (delirium present): Features 1 AND 2 PLUS either Feature 3 OR Feature 4

Types of ICU Delirium:
  • Hyperactive: Agitation, pulling lines β€” most recognized
  • Hypoactive: Quiet, withdrawn β€” most common, often missed
  • Mixed: Fluctuates between both
Non-pharmacological management: Reorientation, early mobilization, sleep protocols, family presence.
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General Knowledge QUESTION #8787
Question 17
Which of the following is a necessary result of inflation?
  • A rise in the exchange rate
  • An increase in the value of money
  • A reduction in the value of money (purchasing power)βœ”οΈ
  • Less money is printed
Correct Answer Logic:
Inflation reduces the purchasing power of currency.
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Math Physics Chemistry Biology QUESTION #577
Question 18
Which of the following damages wooden ships?
  • Sepia
  • Limax
  • Teredoβœ”οΈ
  • Ostrea
Correct Answer Logic:
Teredo (shipworm) damages wooden ships
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Boilers Mechanical Engineering QUESTION #2518
Question 19
The principle of work and energy for a particle states that the net work done by all forces equals:
  • The change in potential energy only
  • The change in kinetic energy: \(U_{1\to2}=\frac{1}{2}mv_2^2 - \frac{1}{2}mv_1^2\)βœ”οΈ
  • The impulse of the net force
  • The product of average force and displacement
Correct Answer Logic:
Work-energy theorem: \(U_{1\to2}=T_2-T_1\), where \(T=\frac{1}{2}mv^2\) is kinetic energy. This is derived by integrating Newton's second law along the path.
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General Knowledge QUESTION #8957
Question 20
'Order of the Cloud and Banner' is the most prestigious military award of which country?
  • Japan
  • Chinaβœ”οΈ
  • India
  • South Korea
Correct Answer Logic:
China's Order of the Cloud and Banner is a military award.
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