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Boilers Mechanical Engineering QUESTION #2504
Question 3341
The octahedral shear stress theory (von Mises criterion) for yielding states that yielding begins when:
  • \(\sigma_{vm} = \sqrt{\sigma_1^2 + \sigma_2^2 + \sigma_3^2} \geq S_y\)
  • \(\sigma_{vm} = \sigma_1 - \sigma_3 \geq S_y\)
  • \(\sigma_{vm} = \frac{1}{\sqrt{2}}\sqrt{(\sigma_1-\sigma_2)^2+(\sigma_2-\sigma_3)^2+(\sigma_3-\sigma_1)^2} \geq S_y\)โœ”๏ธ
  • \(\sigma_{vm} = \frac{\sigma_1+\sigma_2+\sigma_3}{3} \geq S_y\)
Correct Answer Logic:
The von Mises (distortion energy) criterion: \(\sigma_{vm}=\frac{1}{\sqrt{2}}\sqrt{(\sigma_1-\sigma_2)^2+(\sigma_2-\sigma_3)^2+(\sigma_3-\sigma_1)^2}\geq S_y\).
Uploaded by: Fani Warraich
Chemistry QUESTION #4346
Question 3342
Value of $R$ gas constant in $J\ mol^{-1}\ K^{-1}$ is:
  • 8.314โœ”๏ธ
  • 62.4
  • 0.821
  • 62400
Correct Answer Logic:
The universal gas constant $R = 8.314\ J\ mol^{-1}\ K^{-1}$. Other values: $R = 0.0821\ L\ atm\ mol^{-1}\ K^{-1}$ and $R = 62.4\ L\ mmHg\ mol^{-1}\ K^{-1}$.
Uploaded by: Fani Warraich
Correct Answer Logic:
Sum of all five \(= 42 \times 5 = 210\). Remaining sum \(= 210 - 60 = 150\). Average of remaining four \(= \dfrac{150}{4} = 37.5\).
Uploaded by: Fani Warraich
English QUESTION #8442
Question 3344
If you 'have a finger in the pie', you are _______ in something.
  • Involvedโœ”๏ธ
  • Disinterested
  • Puzzled
  • None of these
Correct Answer Logic:
'Have a finger in the pie' means to be involved in something.
Uploaded by: Fani Warraich
Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3637
Question 3345
A 'Carminative' is a drug that:
  • Relieves flatulence (gas) from the GI tractโœ”๏ธ
  • Cures cancer
  • Reduces fever
  • Causes vomiting
Correct Answer Logic:
Fennel, Cardamom, and Ginger are classic carminatives.
Uploaded by: Fani Warraich
General Science and Ability QUESTION #256
Question 3346
Which contains a greater number of carbon atoms in one mole?
  • Chloroform
  • Methanol
  • Water
  • Ethanolโœ”๏ธ
Correct Answer Logic:
Ethanol (C2โ€‹H5โ€‹OH) has 2 carbon atoms per molecule, more than Chloroform (CHCl3โ€‹) or Methanol (CH3โ€‹OH).+1
Uploaded by: Fani Warraich
Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3407
Question 3347
The 'Citric Acid Cycle' (Krebs Cycle) produces the majority of high-energy molecules in the:
  • Cytoplasm
  • Mitochondrial Matrixโœ”๏ธ
  • Cell membrane
  • Lysosome
Correct Answer Logic:
It generates $NADH$ and $FADH_2$ for the electron transport chain.
Uploaded by: Fani Warraich
General Knowledge QUESTION #2623
Question 3348
What is the function of a HEATSINK in a computer?
  • To store temporary data for quick access by the CPU
  • To connect the CPU to the RAM through a dedicated data channel
  • To dissipate (remove) heat from the CPU to prevent it from overheatingโœ”๏ธ
  • To manage the flow of electrical power from the power supply to all components
Correct Answer Logic:
A heatsink is used to dissipate heat from our CPU. The CPU generates significant heat during operation. The heatsink draws this heat away from the CPU and disperses it into the surrounding air, often aided by a cooling fan, to prevent damage from overheating.
Uploaded by: Fani Warraich
Academic/Professional (Social Sciences) QUESTION #6506
Question 3349
The 'Power Elite' is a concept developed by:
  • Max Weber
  • C. Wright Millsโœ”๏ธ
  • Vilfredo Pareto
  • Robert Michels
Correct Answer Logic:
Mills described a small group of military, corporate, and political leaders who dominate American policy.
Uploaded by: Fani Warraich
Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3002
Question 3350
In an 'Oil-in-Water' (O/W) emulsion, the 'Oil' is the:
  • Continuous phase
  • Dispersed phaseโœ”๏ธ
  • Emulsifying agent
  • Solvent
Correct Answer Logic:
In O/W, oil droplets are dispersed throughout the water (continuous phase).
Uploaded by: Fani Warraich
Correct Answer Logic:
The $y$-intercept is the point where the line crosses the vertical $y$-axis. Observing the graph, the line crosses at $y = 8$.
Uploaded by: Fani Warraich
Chemistry QUESTION #468
Question 3352
Which of the following is pale yellow to reddish yellow in color?
  • Pb?O
  • PbO?
  • PbOโœ”๏ธ
  • 2PbCO?.Pb(OH)?
Correct Answer Logic:
PbO (litharge) is pale yellow to reddish yellow
Uploaded by: Fani Warraich
Chemistry QUESTION #5582
Question 3353
In a reaction sequence, sodium phenoxide reacts with $CO_2$ under pressure at 125ยฐC (Kolbeโ€“Schmitt reaction) to give B, which on acetylation with $Ac_2O$ gives C. What is the major product C?
  • Methyl salicylate (OH and $COOCH_3$ on ring)
  • Ortho-acetoxybenzoic acid ($OCOCH_3$ and $COOH$ ortho)โœ”๏ธ
  • Para-acetoxybenzoic acid ($OCOCH_3$ and $COOH$ para)
  • A compound with keto groups
Correct Answer Logic:
Kolbeโ€“Schmitt reaction: Sodium phenoxide + $CO_2$ (125ยฐC, 5 atm) โ†’ Sodium salicylate (2-hydroxybenzoate), acidified to give salicylic acid (B = 2-hydroxybenzoic acid). Acetylation of salicylic acid with $Ac_2O$ preferentially acetylates the โ€“OH group โ†’ product C = 2-(acetyloxy)benzoic acid = aspirin (ortho-acetoxybenzoic acid).
Uploaded by: Fani Warraich
General Knowledge QUESTION #8855
Question 3354
One of the main objectives of the All-India Muslim League at its founding in 1906 was:
  • To be loyal to the British governmentโœ”๏ธ
  • To take active part in Indian politics
  • To be close to the Hindu community
  • Not to take sides with any Indian community
Correct Answer Logic:
The League initially sought British loyalty.
Uploaded by: Fani Warraich
Nursing QUESTION #9249
Question 3355
A Head Nurse assesses a mechanically ventilated patient for ventilator-associated pneumonia (VAP). Which COMBINATION of nursing interventions constitutes the evidence-based VAP Prevention Bundle?
  • Frequent suctioning, prone positioning, daily chest X-ray, prophylactic antibiotics
  • Head of bed elevation 30โ€“45ยฐ, daily sedation vacation, oral decontamination with chlorhexidine, subglottic secretion suctioning, and DVT prophylaxisโœ”๏ธ
  • Hourly oral suctioning, continuous lateral rotation, nebulized antibiotics, gastric pH monitoring
  • Supine positioning, continuous ETT cuff pressure monitoring, prophylactic antifungals, daily bronchoalveolar lavage
Correct Answer Logic:
Correct Answer: B โ€” VAP Prevention Bundle

Evidence-Based VAP Prevention Bundle (IHI):
InterventionRationale
Head of bed elevation \(30 - 45ยฐ\)Reduces aspiration of gastric contents
Daily Sedation Vacation (SAT)Reduces duration of mechanical ventilation
Oral care with Chlorhexidine 0.12%Reduces oropharyngeal colonization
Subglottic secretion drainageRemoves pooled secretions above ETT cuff
DVT prophylaxisComponent of IHI ventilator bundle
PUD prophylaxisH2 blockers or PPIs (component of bundle)
Additional measures: maintain ETT cuff pressure at \(20 - 30 \text{ cmH}_2\text{O}\), avoid unnecessary ventilator circuit changes, hand hygiene.
Uploaded by: Fani Warraich
Correct Answer Logic:
SI \(= \dfrac{10000 \times 5 \times 2}{100} = 1000\). CI: Amount \(= 10000 \times (1.05)^2 = 10000 \times 1.1025 = 11025\). CI \(= 1025\). Difference \(= 1025 - 1000 = Rs.\ 25\).
Uploaded by: Fani Warraich
General Knowledge QUESTION #9005
Question 3357
The largest island in the world (excluding Australia) is:
  • Australia
  • Japan
  • Greenlandโœ”๏ธ
  • Indonesia
Correct Answer Logic:
Greenland is the largest island.
Uploaded by: Fani Warraich
MCQs Section QUESTION #4854
Question 3358
Choose the word nearly opposite in meaning to "PUTATIVE"
  • Powerful
  • Colonial
  • Undisputedโœ”๏ธ
  • Unremarkable
Correct Answer Logic:
Putative means generally considered or reputed to be something, though not necessarily proven. Its antonym is 'undisputed,' meaning accepted as true without question or doubt.
Uploaded by: Fani Warraich
Islamic Studies QUESTION #8201
Question 3359
How many Pillars does Islam have?
  • 4
  • 5โœ”๏ธ
  • 6
  • 7
Correct Answer Logic:
Islam has Five Pillars (Arkan al-Islam), which are the foundation of Muslim life: (1) Shahadah - Declaration of faith, (2) Salah - Five daily prayers, (3) Zakat - Obligatory charity, (4) Sawm - Fasting during Ramadan, and (5) Hajj - Pilgrimage to Makkah for those who are able. These pillars unite Muslims worldwide in belief and practice.
Uploaded by: Fani Warraich
General Knowledge QUESTION #4681
Question 3360
Dan Quayle held which of the following positions?
  • Mexican footballer
  • American Politicianโœ”๏ธ
  • Prime Minister of Brazil
  • Secretary General of NATO
Correct Answer Logic:
Dan Quayle served as the 44th Vice President of the United States under President George H.W. Bush (1989โ€“1993).
Uploaded by: Fani Warraich