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Biology QUESTION #4258
Question 3401
The main role of mRNA during protein synthesis is to:
  • Carry genetic information for protein synthesis✔️
  • Stabilize ribosome
  • Deliver amino acids
  • Provide platform for protein synthesis
Correct Answer Logic:
mRNA (messenger RNA) carries the genetic code from DNA to the ribosome, serving as the template for protein synthesis.
Uploaded by: Fani Warraich
Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3383
Question 3402
'Atherosclerosis' is primarily associated with high levels of which lipoprotein?
  • HDL
  • LDL✔️
  • Chylomicrons
  • VLDL
Correct Answer Logic:
LDL is often called 'bad cholesterol' because it deposits fat in arterial walls.
Uploaded by: Fani Warraich
Mechanical Engineering QUESTION #2445
Question 3403
For the SDOF damped forced vibration \(m\ddot{x}+c\dot{x}+kx=F_0\sin pt\), the steady-state response lags the excitation by phase angle \(\phi\) where:
  • \(\tan\phi = \frac{1-(p/\omega_n)^2}{2\zeta(p/\omega_n)}\)
  • \(\tan\phi = \frac{2\zeta(p/\omega_n)}{1-(p/\omega_n)^2}\)✔️
  • \(\tan\phi = \frac{p}{\omega_n}\)
  • \(\tan\phi = \frac{k}{cp}\)
Correct Answer Logic:
The phase angle: \(\phi=\arctan\frac{2\zeta(p/\omega_n)}{1-(p/\omega_n)^2}\). At resonance (\(p=\omega_n\)): \(\phi=90°\) regardless of damping.
Uploaded by: Fani Warraich
Mathematics QUESTION #4115
Question 3404
Consider vectors $\mathbf{a} = (1, 2, 3)$, $\mathbf{b} = (2, 5, 7)$, $\mathbf{c} = (1, 3, 5)$ in $\mathbb{R}^3$. Compute $\det \begin{pmatrix} 1 & 2 & 1 \ 2 & 5 & 3 \ 3 & 7 & 5 \end{pmatrix}$. What does this indicate?
  • Determinant is $0$, vectors are linearly dependent
  • Determinant is $1$, vectors are linearly independent✔️
  • Determinant is $-1$, vectors are linearly independent
  • Determinant is $2$, vectors are linearly dependent
Correct Answer Logic:
$\det = 1(25-21) - 2(10-9) + 1(14-15) = 4 - 2 - 1 = 1 \neq 0$. Since determinant is non-zero, the vectors are linearly independent.
Uploaded by: Fani Warraich
Basic Mathematics QUESTION #4591
Question 3405
Simplify: $7y - 2y + 4y$
  • $3y$
  • $9y$✔️
  • $14y$
  • $5y$
Correct Answer Logic:
Combine like terms: $7y - 2y + 4y = (7-2+4)y = 9y$
Uploaded by: Fani Warraich
Correct Answer Logic:
By the law of conservation of momentum and the coefficient of restitution for elastic collisions: relative speed of approach $=$ relative speed of separation. Since relative speed of approach $= 5 - 1 = 4\ m/s$, the relative speed of separation $= 4\ m/s$.
Uploaded by: Fani Warraich
English QUESTION #2734
Question 3407
Change to ACTIVE VOICE: 'A song is being sung by her.'
  • She sings a song.
  • She was singing a song.
  • She is singing a song.✔️
  • She sang a song.
Correct Answer Logic:
The active voice of 'is being sung' (present continuous passive) is 'is singing' (present continuous active). So 'She is singing a song' is correct.
Uploaded by: Fani Warraich
Boilers Mechanical Engineering QUESTION #4014
Question 3408
'Interlocks' in a boiler control system are designed to:
  • Lock the doors of the factory
  • Ensure that certain safety conditions are met before a sequence can proceed✔️
  • Speed up the fans
  • Increase the fuel price
Correct Answer Logic:
For example, a burner shouldn't ignite unless the fan is running and water level is safe.
Uploaded by: Fani Warraich
Tourism & Hospitality Management QUESTION #1603
Question 3409
The Hospitality Operations course covers 'forces affecting growth and change in the hospitality industry.' Which of the following forces is specifically identified in the curriculum?
  • Political instability and military coups
  • Managing change, demand diversity, culture change, supply and land produce, workforce diversity, and the impact of labor scarcity✔️
  • Advances in space tourism and virtual reality hotels
  • Changes in international accounting standards
Correct Answer Logic:
Module 2 of the Hospitality Operations course specifically identifies the following forces: Managing change, demand diversity and culture change, supply — land and its produce, workforce diversity, and the impact of labor scarcity — as the key drivers shaping growth and transformation in the global hospitality industry.
Uploaded by: Fani Warraich
Correct Answer Logic:
Socialization is the lifelong process by which individuals learn and internalize the cultural norms, values, roles, and behaviors expected of them in their society. It is distinct from assimilation (merging into a dominant culture) and institutionalization (embedding practices into formal structures).
Uploaded by: Fani Warraich
General Knowledge QUESTION #4650
Question 3411
In your hostel mess, the vegetable curry has had stones for ten days. What will you do?
  • Buy your own vegetables and cook✔️
  • Leave consuming vegetables altogether
  • Speak with cook to change the vegetable
  • Bring the matter to notice of mess in-charge, then hostel administration
Correct Answer Logic:
3
Uploaded by: Fani Warraich
Therapeutics and Patient Care QUESTION #3891
Question 3412
On which days of the menstrual cycle should clomifene be taken to stimulate ovulation induction?
  • Days 0–5 of the menstrual cycle
  • Days 5–9 of the menstrual cycle✔️
  • Days 10–14 of the menstrual cycle
  • Days 20–24 of the menstrual cycle
Correct Answer Logic:
Clomifene citrate is typically prescribed from day 2–6 or day 5–9 of the menstrual cycle to induce follicular development and ovulation.
Uploaded by: Fani Warraich
Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3395
Question 3413
'Co-enzymes' are often derived from:
  • Minerals
  • Vitamins✔️
  • Carbohydrates
  • Fats
Correct Answer Logic:
Many B-complex vitamins serve as precursors for essential co-enzymes (like $NAD^+$).
Uploaded by: Fani Warraich
Security Measures to Maintain Law and Order QUESTION #889
Question 3414
Under Section 5, the "Head of the Force" (DG) can issue "Standing Orders" to:
  • Change the Act
  • Regulate the Force's discipline✔️
  • Increase airport taxes
  • Hire foreign mercenaries
Correct Answer Logic:
Section 5 and 13 allow the DG to issue orders/regulations to maintain the efficient functioning and discipline of the Force.
Uploaded by: Fani Warraich
Physics QUESTION #4401
Question 3415
The reciprocal of the resistivity of a material is called its:
  • Impedance
  • Conductivity✔️
  • Admittance
  • Reactance
Correct Answer Logic:
Electrical conductivity $\sigma = \dfrac{1}{\rho}$ where $\rho$ is resistivity. Conductivity measures how easily a material allows electric current to flow. Its SI unit is $S\ m^{-1}$ (Siemens per metre).
Uploaded by: Fani Warraich
Correct Answer Logic:

From the table, each value of y is exactly twice x, so the relationship is $y = 2x$.

Uploaded by: Fani Warraich
Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3518
Question 3417
'Cardamom' (Elaichi) is used as a:
  • Carminative and Flavoring agent✔️
  • Strong poison
  • Antibiotic
  • Sedative
Correct Answer Logic:
Cardamom is widely used to relieve gas and improve taste.
Uploaded by: Fani Warraich
Basic Mathematics QUESTION #4595
Question 3418
Solve: $2x + 5 = 13$
  • $x = 4$✔️
  • $x = 9$
  • $x = 8$
  • $x = 6.5$
Correct Answer Logic:
$2x + 5 = 13 \Rightarrow 2x = 8 \Rightarrow x = 4$
Uploaded by: Fani Warraich
English QUESTION #2760
Question 3419
Which sentence uses QUOTATION MARKS correctly?
  • 'She said✔️
  • I am tired'.
  • She said
  • 'I am tired'.
Correct Answer Logic:
'I am tired.
Uploaded by: Fani Warraich
Chemistry QUESTION #433
Question 3420
Which element forms long chains alternating with oxygen?
  • Carbon
  • Silicon
  • Nitrogen
  • All of these✔️
Correct Answer Logic:
Silicon, carbon and other elements can form chains with oxygen
Uploaded by: Fani Warraich