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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3470

Question 1

The enzyme that 'Unwinds' the DNA double helix during replication is:

Polymerase
Ligase
Helicase✔️
Protease

Correct Answer Logic:

Helicase 'unzips' the genes.

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Civil Procedure QUESTION #3716

Question 2

A high-end electronics store mistakenly advertises a $\text{\$2,000}$ TV for $\text{\$200}$ on its website. A customer buys 10 of them. The store realizes the error and cancels the order. The customer sues. Is the store bound by the $\text{\$200}$ price?

Yes, an advertisement is always a binding offer.
No, because an advertisement is generally an invitation to deal, not an offer.✔️
Yes, because the customer accepted the offer by clicking 'buy.'
No, because of the doctrine of mutual mistake.

Correct Answer Logic:

Generally, advertisements are invitations for offers, not offers themselves. Even if treated as an offer, a 'unilateral mistake' where the other party knew or should have known of the error (buying 10 for 10% of the value) allows for rescission.

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Boilers Mechanical Engineering QUESTION #2459

Question 3

Gear interference occurs when:

The pressure angle exceeds 25°
The addendum circle of one gear extends beyond the tangent points (interference points) on the line of action✔️
The contact ratio exceeds 2.0
The module is less than 1 mm

Correct Answer Logic:

Interference occurs when the dedendum of one gear extends below its base circle. The maximum addendum radius without interference is $r_{a,max}=\sqrt{r_b^2+c^2\sin^2\phi}$.

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Boilers Mechanical Engineering QUESTION #2546

Question 4

The product of inertia $I_{xy}=\int xy\,dA$ is ZERO when:

The area has no curved boundaries
The area is symmetric about EITHER the x- OR y-axis✔️
The second moments $I_x$ and $I_y$ are equal
The area is a polygon

Correct Answer Logic:

The product of inertia is zero whenever the area has an axis of symmetry that coincides with either the x- or y-axis. The symmetric pairs of elemental areas contribute equal and opposite $xy\,dA$ terms that cancel.

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English Literature QUESTION #10753

Question 5

Old Norse is almost the same as which modern Scandinavian language?

Danish
Norwegian
Icelandic✔️
Swedish

Correct Answer Logic:

Icelandic is the modern Scandinavian language most closely related to Old Norse. Because Iceland has been relatively isolated geographically and culturally, its language has changed far less than Danish, Swedish, or Norwegian over the past 1,000 years. An educated Icelander can read Old Norse sagas in the original with relatively little difficulty. Old Norse was the language of the Vikings and Norse mythology.

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Nursing QUESTION #9145

Question 6

A newborn is delivered and assessed at birth. Resuscitation is initiated. After 30 seconds of effective positive pressure ventilation (PPV), heart rate is 55 bpm. What is the NEXT step according to Neonatal Resuscitation Program (NRP) guidelines?

Continue PPV alone for another 60 seconds
Begin chest compressions at ratio 3:1 (compressions: ventilation)✔️
Administer epinephrine 0.1 mg/kg IV immediately
Intubate the trachea and provide 100% oxygen via ETT only

Correct Answer Logic:

Neonatal Resuscitation Program (NRP) — Algorithm:

Initial steps (warm, dry, stimulate, position, clear airway) — 30 seconds
Assess: breathing, HR
HR $<100\,\text{bpm}$ or apnea → Start PPV with 21% O₂ (room air) for 30 seconds
After 30 sec PPV: Reassess HR
- HR $\geq 100$: Continue PPV, wean O₂
- HR $60{-}99$: Ensure effective ventilation (MRSOPA), continue PPV
- HR $<60$ after 30 sec effective PPV → Start chest compressions + PPV
Chest compressions:
- Technique: 2-thumb encircling (preferred) or 2-finger method
- Ratio: 3 compressions : 1 ventilation (90 compressions + 30 breaths = 120 events/min)
- Depth: $\frac{1}{3}$ of AP chest diameter
After 60 sec compressions + PPV: If HR still $<60$ → Epinephrine (IV preferred: $0.01{-}0.03\,\text{mg/kg}$ of 1:10,000 solution)

Note: Adult CPR ratio is 30:2, but neonatal is 3:1 because neonatal arrest is usually respiratory in origin.

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Mathematics QUESTION #11154

Question 7

$\displaystyle\lim_{x\to 1}\frac{x^2 - x}{1 - x + \ln x}$ is:

$2$
$-2$✔️
$1$
$-1$

Correct Answer Logic:

At $x=1$: numerator $= 1-1=0$, denominator $= 1-1+0=0$ (indeterminate $0/0$). Apply L'Hôpital's Rule: $\frac{2x-1}{-1+1/x}$. At $x=1$: $\frac{1}{0}$ — still indeterminate. Apply again: $\frac{2}{-1/x^2}$. At $x=1$: $\frac{2}{-1} = -2$.

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Math (Module-1) QUESTION #5461

Question 8

Hana deposited a fixed amount monthly. The function $f(t) = 100 + 25t$ gives the amount in dollars after $t$ monthly deposits. What is the best interpretation of $25$?

With each deposit, the amount increased by $\$25$.✔️
Before any deposits, the amount was $\$25$.
After $1$ deposit, the amount was $\$25$.
Hana made $25$ total deposits.

Correct Answer Logic:

The slope $25$ in the linear function $f(t) = 100 + 25t$ represents the change in amount per month (per deposit).

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Planning QUESTION #5022

Question 9

In housing density calculation, if net residential area is 10 hectares with 500 dwelling units, the density is:

25 DU/ha
50 DU/ha✔️
75 DU/ha
100 DU/ha

Correct Answer Logic:

Net density = $\frac{\text{Total Dwelling Units}}{\text{Net Residential Area}} = \frac{500}{10} = 50$ dwelling units per hectare. Net density excludes public facilities, roads, and open spaces; gross density includes entire development area.

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Maths QUESTION #7966

Question 10

Aslam ran around a $\dfrac{1}{4}$ km track 17 times. How many kilometres did he run?

$4\dfrac{1}{4}$ km✔️
4 km
$4\dfrac{1}{2}$ km
$4\dfrac{3}{4}$ km

Correct Answer Logic:

Total distance $= 17 \times \dfrac{1}{4} = \dfrac{17}{4} = 4\dfrac{1}{4}$ km

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Chemistry QUESTION #1095

Question 11

Energy and radius of first Bohr orbit of He$^+$ and Li$^{2+}$ are: [Given: $R_H = 2.18\times10^{-18}\ \text{J}$, $a_0=52.9\ \text{pm}$]

$E_n(\text{Li}^{2+})=-19.62\times10^{-16}\ \text{J}$; $r_n(\text{Li}^{2+})=17.6\ \text{pm}$; $E_n(\text{He}^+)=-8.72\times10^{-16}\ \text{J}$; $r_n(\text{He}^+)=26.4\ \text{pm}$
$E_n(\text{Li}^{2+})=-8.72\times10^{-16}\ \text{J}$; $r_n(\text{Li}^{2+})=17.6\ \text{pm}$; $E_n(\text{He}^+)=-19.62\times10^{-16}\ \text{J}$; $r_n(\text{He}^+)=17.6\ \text{pm}$
$E_n(\text{Li}^{2+})=-19.62\times10^{-18}\ \text{J}$; $r_n(\text{Li}^{2+})=17.6\ \text{pm}$; $E_n(\text{He}^+)=-8.72\times10^{-18}\ \text{J}$; $r_n(\text{He}^+)=26.4\ \text{pm}$✔️
$E_n(\text{Li}^{2+})=-8.72\times10^{-18}\ \text{J}$; $r_n(\text{Li}^{2+})=26.4\ \text{pm}$; $E_n(\text{He}^+)=-19.62\times10^{-18}\ \text{J}$; $r_n(\text{He}^+)=17.6\ \text{pm}$

Correct Answer Logic:

$E_n = -Z^2 R_H/n^2$. For Li$^{2+}$ ($Z=3, n=1$): $E=-9\times2.18\times10^{-18}=-19.62\times10^{-18}\ \text{J}$. For He$^+$ ($Z=2, n=1$): $E=-4\times2.18\times10^{-18}=-8.72\times10^{-18}\ \text{J}$. Radii: $r=a_0 n^2/Z$. Li$^{2+}$: $r=52.9/3=17.6\ \text{pm}$. He$^+$: $r=52.9/2=26.45\approx26.4\ \text{pm}$. Correct: option (3).

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Pharmacokinetics and Pharmacodynamics QUESTION #3829

Question 12

A paediatric patient weighing $30$ kg is prescribed metronidazole $250$ mg every $8$ hours. Each mL of a $500\ \text{mg}/500\ \text{mL}$ ampoule contains $0.135\ \text{mmol/mL}$ sodium. What is the total sodium intake over $24$ hours?

$33.8$ mmol
$101.3$ mmol✔️
$202.5$ mmol
$1852$ mmol

Correct Answer Logic:

Three doses of $250$ mg each $= 3 \times 250\ \text{mL}$ of the solution. Volume per dose $= 250\ \text{mL}$, total $= 750\ \text{mL}$. Sodium $= 750 \times 0.135 = 101.3\ \text{mmol}$.

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General Knowledge QUESTION #8635

Question 13

Which language is spoken by the largest number of people in the world as a first language?

Chinese✔️
English
Arabic
French

Correct Answer Logic:

Mandarin Chinese has the most native speakers.

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English Literature QUESTION #10722

Question 14

Holy Sonnets was written by:

Marlowe
Donne✔️
Spenser
Johnson

Correct Answer Logic:

John Donne wrote the Holy Sonnets (also called Divine Meditations), a collection of 19 sonnets on themes of mortality, sin, divine love, and salvation. Famous lines include 'Death, be not proud' (Sonnet 10) and 'Batter my heart, three-person'd God' (Sonnet 14). Donne is the foremost Metaphysical poet, and the Holy Sonnets are his greatest devotional achievement.

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Mathematics QUESTION #1269

Question 15

The Cauchy-Riemann equations in polar form are:

$\dfrac{\partial u}{\partial r}=\dfrac{\partial v}{\partial\theta},\quad \dfrac{\partial u}{\partial\theta}=-\dfrac{\partial v}{\partial r}$
$\dfrac{\partial u}{\partial r}=\dfrac{1}{r}\dfrac{\partial v}{\partial\theta},\quad \dfrac{\partial u}{\partial\theta}=-r\dfrac{\partial v}{\partial r}$✔️
$r\dfrac{\partial u}{\partial r}=\dfrac{\partial v}{\partial\theta},\quad \dfrac{\partial u}{\partial\theta}=-r\dfrac{\partial v}{\partial r}$
$\dfrac{\partial u}{\partial r}=\dfrac{\partial v}{\partial\theta},\quad r\dfrac{\partial u}{\partial\theta}=\dfrac{\partial v}{\partial r}$

Correct Answer Logic:

In polar coordinates $z=re^{i\theta}$, the Cauchy-Riemann equations become: $\dfrac{\partial u}{\partial r}=\dfrac{1}{r}\dfrac{\partial v}{\partial\theta}$ and $\dfrac{1}{r}\dfrac{\partial u}{\partial\theta}=-\dfrac{\partial v}{\partial r}$. These are the standard polar C-R equations.

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General Knowledge QUESTION #4749

Question 16

Transparency International's global headquarters is located in which city?

New York
London
Berlin✔️
Geneva

Correct Answer Logic:

Transparency International (TI), the global anti-corruption NGO founded in 1993, has its secretariat headquarters in Berlin, Germany.

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Verbal Reasoning QUESTION #8103

Question 17

Compare the two quantities below.

Column A: $(0.82)^2 \cdot (0.82)^3$

Column B: $(0.82)^6$

Column A is greater✔️
Column B is greater
The two quantities are equal
The relationship cannot be determined from the information given

Correct Answer Logic:

Using the rule of exponents: $(0.82)^2 \cdot (0.82)^3 = (0.82)^{2+3} = (0.82)^5$.

Now compare $(0.82)^5$ vs $(0.82)^6$.

Since $0 < 0.82 < 1$, multiplying by $0.82$ makes the number smaller. Therefore $(0.82)^5 > (0.82)^6$.

Column A is greater.

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Accounting & Finance QUESTION #6052

Question 18

Which one of the following qualifies as a capital expenditure?

Paying for renovations that upgrade and improve a building✔️
Paying carriage-outward charges related to delivering sold goods
Paying legal fees to recover outstanding amounts from customers
Paying performance bonuses to production workers

Correct Answer Logic:

Capital expenditure is spending that improves, extends the life of, or adds value to a long-term asset. Renovating and upgrading a building increases its value and useful life — this is capital expenditure. The other options are all revenue expenditures: carriage outwards, legal recovery fees, and wage bonuses are period costs that appear on the income statement and do not create lasting assets.

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5762

Question 19

Which adrenergic agonist is known for its 'Mixed Action'?

Epinephrine
Amphetamine
Ephedrine✔️
Dopamine

Correct Answer Logic:

Ephedrine acts directly on receptors and indirectly by releasing stored norepinephrine.

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Math Physics Chemistry Biology QUESTION #11264

Question 20

The functional unit of the kidney responsible for filtration is the:

Nephron✔️
Glomerulus
Bowman's capsule
Collecting duct

Correct Answer Logic:

The nephron is the functional unit of the kidney. Each kidney contains about 1-1.5 million nephrons. A nephron consists of the renal corpuscle (glomerulus + Bowman's capsule) for filtration and the renal tubule for reabsorption and secretion.

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