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Boilers Mechanical Engineering QUESTION #2459

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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Tourism & Hospitality Management QUESTION #1632

Question 2

According to the Travel & Tour Operations course, 'tour costing' involves which categories of costs that must be identified and calculated?

Only accommodation and transport costs
Fixed and variable costs, direct and indirect costs, components of tour cost, factors affecting tour cost, and the procedure for cost determination leading to the final tour price✔️
Marketing and promotional costs only
Staff salaries and overhead costs only

Correct Answer Logic:

The Travel & Tour Operations course (Module 5: Tour Costing and Pricing) comprehensively covers: the concept of cost, fixed vs. variable costs, direct vs. indirect costs, components of tour cost, factors affecting tour cost, costing a tour package, the cost sheet, procedure for cost determination, calculation of tour price, and significance of profit margin — the full financial architecture of tour packaging.

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English Literature QUESTION #700

Question 3

"Tintern Abbey" is written in:

Heroic Couplets
Free Verse
Blank Verse✔️
None of these

Correct Answer Logic:

The poem is written in unrhymed iambic pentameter, or blank verse.

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Biology Zoology Botany QUESTION #1379

Question 4

Plants that grow under direct sunlight are known as:

Heliophytes✔️
Sciophytes
Psamophytes
Dicots

Correct Answer Logic:

Heliophytes (sun plants) are plants adapted to grow in full, direct sunlight. They have structural adaptations such as smaller, thicker leaves with more palisade mesophyll layers and higher chlorophyll content to optimise photosynthesis in high-light conditions. Sciophytes are shade-tolerant plants; psamophytes grow in sandy soil environments.

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Maths QUESTION #2831

Question 5

Simplify: $\dfrac{2^5 \times 4^3}{8^2 \times 2}$

4
8✔️
16
32

Correct Answer Logic:

$2^5 = 32$, $4^3 = (2^2)^3 = 2^6 = 64$, $8^2 = (2^3)^2 = 2^6 = 64$. Numerator $= 2^5 \times 2^6 = 2^{11}$. Denominator $= 2^6 \times 2^1 = 2^7$. Result $= 2^{11-7} = 2^4 = 16$.

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Library Sciences QUESTION #1522

Question 6

According to Bopp and Smith (2001), the reference interview is essential because:

It saves the librarian's time by limiting user queries
It helps the librarian accurately understand the user's actual information need, which may differ from the initial query✔️
It is required by library policy in all institutions
It replaces the need to consult printed reference sources

Correct Answer Logic:

Bopp and Smith (2001) emphasize that the reference interview is a critical professional skill because users often cannot articulate their true information need precisely. The interview helps the librarian clarify, negotiate, and properly understand the query before selecting appropriate sources.

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Professional QUESTION #1825

Question 7

Section 6(3) of the Civil Servants Act 1973 deals with failure to pass a prescribed examination or training during probation. If a civil servant appointed by PROMOTION fails to pass the required examination before the expiry of probation, what is the prescribed consequence?

He shall be discharged from service
He shall be reverted to the post from which he was promoted and against which he holds a lien, or discharged if no such post exists✔️
He shall be given an automatic extension of probation period
He shall be referred to the Federal Public Service Commission for re-evaluation

Correct Answer Logic:

Section 6(3)(b) provides that if a civil servant appointed by promotion or transfer fails to pass the prescribed examination or training during probation, he shall be reverted to the service or post from which he was promoted or transferred and against which he holds a lien, or if no such post exists, be discharged. Discharge is only for initial appointees under clause (a).

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Accounting & Finance QUESTION #6092

Question 8

A workshop produces wedding dresses. Each machinist is paid $30/day and each supervisor $40/day. One supervisor is needed for every 10 machinists. One machinist makes one dress per day. What is the total labour cost for a day where 95 dresses are produced?

$2,850
$3,210
$3,230
$3,250✔️

Correct Answer Logic:

1. Machinists needed = 95 (since 1 dress per person). Cost = 95 $\times$ $30 = $2,850.
2. Supervisors needed = 95 / 10 = 9.5, which means 10 supervisors are required. Cost = 10 $\times$ $40 = $400.
3. Total Cost = $2,850 + $400 = $3,250.

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Dairy Food Science and Technology QUESTION #5871

Question 9

The isoelectric point of casein, at which it precipitates from milk, is approximately:

$\text{pH}\; 4.0$
$\text{pH}\; 4.6$✔️
$\text{pH}\; 5.2$
$\text{pH}\; 6.6$

Correct Answer Logic:

Casein precipitates at its isoelectric point of $\text{pH}\; 4.6$. This principle is used in acid coagulation of milk for cheese and paneer making and explains why acidification of milk causes curd formation.

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Pharmacology and Toxicology QUESTION #3861

Question 10

By what primary mechanism does metformin exert its blood glucose-lowering effect in type 2 diabetes?

Blocks absorption of glucose in the intestine
Increases pancreatic insulin secretion
Decreases hepatic glucose production✔️
Increases metabolism of ketone precursors

Correct Answer Logic:

Metformin primarily reduces hepatic gluconeogenesis via AMPK activation, resulting in decreased hepatic glucose output and lower fasting blood glucose levels.

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English QUESTION #510

Question 11

INDOLENTLY

Lazily✔️
Indecently
Ideally
Gaily

Correct Answer Logic:

Indolently means lazily

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Math (Module-1) QUESTION #5382

Question 12

Given the system of equations $s + 7v = 34$ and $s = 6v$, what is the specific value of $v$ that satisfies both?

$\frac{34}{13}$✔️
$\frac{34}{7}$
$24$
$\frac{1}{6}$

Correct Answer Logic:

Substitute $s = 6v$ into the first equation: $6v + 7v = 34 \Rightarrow 13v = 34 \Rightarrow v = \frac{34}{13}$.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3308

Question 13

'Aerosols' are a major route of transmission for which type of diseases?

Foodborne
Waterborne
Airborne (Respiratory)✔️
Vector-borne

Correct Answer Logic:

Tiny droplets suspended in the air can carry pathogens like those causing TB or Flu.

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Law QUESTION #9500

Question 14

A Court of first instance passes an ex parte decree against B. B applies to set it aside, but his application is dismissed. B then appeals against the ex parte decree itself. Is this appeal maintainable?

No; B cannot avail both remedies simultaneously
No; B's only remedy is the application to set aside the ex parte decree
No; B waived his appeal right by first applying to set aside the decree
Yes; where the application to set aside an ex parte decree is dismissed, B retains the right to appeal against the original ex parte decree; both remedies co-exist✔️

Correct Answer Logic:

Under Order IX Rule 13 and Order XLIII CPC, there is no bar on a defendant simultaneously or sequentially pursuing an application to set aside an ex parte decree and an appeal from that decree. These are independent remedies. Dismissal of the application does not extinguish the right of appeal.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3610

Question 15

'Agar' is a mucilaginous substance obtained from:

Land plants
Seaweeds (Red Algae)✔️
Animal bones
Fungi

Correct Answer Logic:

Agar is derived from Gelidium and Gracilaria species.

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MCQs Section QUESTION #5144

Question 16

دیارِ عشق میں اپنا مقام پیدا کر، کس شاعر کا مصرع ہے؟

میر تقی میر
غالب
اقبال✔️
فیض

Correct Answer Logic:

دیارِ عشق میں اپنا مقام پیدا کر علامہ اقبال کا مشہور مصرع ہے۔

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3594

Question 17

Glycosides are compounds that, upon hydrolysis, yield a sugar part called 'Glycone' and a non-sugar part called:

Anion
Aglycone (Genin)✔️
Enzyme
Lactose

Correct Answer Logic:

The aglycone part is usually responsible for the therapeutic activity of the glycoside.

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General Ability and Fire Fighting QUESTION #5628

Question 18

The 'ignition temperature' of a fuel refers to:

The temperature at which the fuel melts
The temperature at which the fuel spontaneously combusts or can be ignited✔️
The boiling point of the fuel
The temperature of a fully developed fire

Correct Answer Logic:

Ignition temperature is the minimum temperature at which a fuel can be ignited and sustain combustion. Cooling a fuel below this point is the goal of the 'Cooling' extinguishment method.

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Maths QUESTION #4571

Question 19

If average of $5$ numbers is $20$, what is their sum?

$25$
$100$✔️
$15$
$4$

Correct Answer Logic:

Sum = Average $\times$ Count = $20 \times 5 = 100$

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Math Physics Chemistry Biology QUESTION #7765

Question 20

Which organism is used in the production of Humulin (human insulin)?

Bacteria✔️
Fungi
Protozoa
Virus

Correct Answer Logic:

Recombinant E. coli (bacteria) or yeast are engineered to produce human insulin (Humulin). Bacteria are most common for large-scale production.

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