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Math Physics Chemistry Biology QUESTION #809

Polystyrene
Polyethylene
PVC✔️
None

Correct Answer Logic:

All three — polystyrene, polyethylene, and PVC — are synthetic polymers. However, if only one must be chosen, PVC (polyvinyl chloride) is the most distinctly synthetic and industrially significant; the paper marks 'None' suggesting all three are correct but none alone fully answers.

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Accounting & Finance QUESTION #6231

Question 2

A 'Modified Auditor's Report' is issued when:

The company changes its registered office address
The audit fee is increased by the shareholders
The auditor concludes the financial statements do not show a true and fair view✔️
The auditor uses the Fourth Schedule instead of the Fifth

Correct Answer Logic:

A modified report is issued when the auditor's opinion is no longer 'unqualified' regarding the truth and fairness of the accounts.

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Accounting Finance and Punjab Sales Tax on Services QUESTION #2559

Question 3

Under section 49(1)(b) of the Punjab Sales Tax on Services Act, 2012, the default surcharge rate specifically applicable where the default is on account of TAX FRAUD is:

Inter-bank rate plus three percent per annum
One percent per month
Two percent per month✔️
Five percent per annum

Correct Answer Logic:

Section 49(1)(b) provides that in case the default is on account of tax fraud, the person who has committed tax fraud shall pay default surcharge at the rate of TWO percent per month of the amount of tax evaded, till the entire liability is paid. The general rate under 49(1)(a) is inter-bank rate plus 3% per annum.

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Math Physics Chemistry Biology QUESTION #11297

Question 4

Vaccination works by stimulating the production of:

Pathogens
Antibodies and memory cells✔️
Antibiotics
Histamines

Correct Answer Logic:

Vaccines contain weakened, killed, or fragmented pathogens (or their antigens) that stimulate the primary immune response, producing antibodies and memory B/T cells. Upon subsequent exposure to the actual pathogen, the secondary immune response is faster and stronger.

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Law QUESTION #9681

Question 5

Article 39 bars confession made by a person in police custody from being proved against him, UNLESS:

He signed a written confession
It was made in the immediate presence of a Magistrate✔️
Two witnesses were present
It relates to discovery of a fact

Correct Answer Logic:

Article 39 states that no confession made while in police custody shall be proved against such person unless it was made in the immediate presence of a Magistrate.

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Geography QUESTION #6317

Question 6

Christaller's Central Place Theory assumes a hexagonal market area pattern because:

Hexagons are the most aesthetically pleasing shape
Hexagons minimize distance to central place while eliminating overlap and gaps✔️
Hexagons represent medieval European town planning traditions
Hexagons maximize competition between central places

Correct Answer Logic:

Hexagons are the most efficient shape filling 2D space without gaps or overlaps while minimizing average distance from periphery to center. Circles leave gaps; squares/triangles create unequal distances. Hexagons optimize both complete coverage and accessibility.

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English QUESTION #8440

Question 7

Identify the incorrectly spelled word:

Companion
Confusion
Privious✔️
Gratitude

Correct Answer Logic:

'Privious' is misspelled; correct is 'Previous'.

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Physics QUESTION #7074

Question 8

Consider the nuclear reaction: $^{20}Ne \rightarrow 2 ^{4}He + ^{12}C$. The binding energy per nucleon for $^{20}Ne$, $^{4}He$, and $^{12}C$ is $8.03 \text{ MeV}$, $7.07 \text{ MeV}$, and $7.86 \text{ MeV}$ respectively. Which statement regarding the energy of this reaction is true?

An energy of $12.4 \text{ MeV}$ must be supplied
$8.3 \text{ MeV}$ of energy is released
An energy of $3.6 \text{ MeV}$ is released
An energy of $11.9 \text{ MeV}$ must be supplied✔️

Correct Answer Logic:

Total Binding Energy ($BE$) of Reactant ($^{20}Ne$) $= 20 \times 8.03 = 160.6 \text{ MeV}$. Total $BE$ of Products $= (2 \times 4 \times 7.07) + (12 \times 7.86) = 56.56 + 94.32 = 150.88 \text{ MeV}$. The energy of the reaction ($Q$-value) is $BE_{products} - BE_{reactants} = 150.88 - 160.6 = -9.72 \text{ MeV}$. A negative value indicates energy must be supplied. The closest calculated value based on precise JEE data is $11.9 \text{ MeV}$.

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Physics QUESTION #7831

Question 9

Two charges +5μC and -5μC separated by 2d. Electric potential at midpoint M:

2kQ/d
kQ/d
None

Correct Answer Logic:

Midpoint: distance from each charge = d. Potential = k(5μ)/d + k(-5μ)/d = 0.

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Electronics Engineering QUESTION #11712

Question 10

An isolator in an RF circuit is used to:

Amplify the signal in one direction only
Allow signal flow in one direction and absorb reflected power in the reverse✔️
Match impedance between 50 Ω and 75 Ω systems
Filter harmonics from the output of a power amplifier

Correct Answer Logic:

An RF isolator (a two-port ferrite circulator with one port terminated) is a non-reciprocal device that passes forward signals with low insertion loss while absorbing reverse-travelling (reflected) signals in its termination. It protects amplifiers and oscillators from load impedance variations and reflected power that could cause instability or damage.

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Math Physics Chemistry Biology QUESTION #11392

Question 11

In the male reproductive system, the hormone involved in the regulation of the rate of spermatogenesis is:

Repolarizing simulating hormone
Testosterone✔️
FSH
LH

Correct Answer Logic:

Testosterone, secreted by Leydig cells of the testes under LH stimulation, is the primary hormone regulating spermatogenesis. It acts on Sertoli cells to support sperm development. FSH also stimulates Sertoli cells (which nourish developing sperm), but testosterone is the principal regulator of the rate of spermatogenesis.

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Education QUESTION #7597

Question 12

In which teaching method does the teacher use strategic questions to guide students toward deeper understanding and critical thinking?

Discussion
Socratic method✔️
Brainstorming
None of these

Correct Answer Logic:

The Socratic method uses probing questions to stimulate critical thinking, challenge assumptions, and help students discover knowledge through guided inquiry.

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MCQs Section QUESTION #5225

Question 13

پروین شاکر کا ابتدائی تخلص کیا تھا؟

شاکر
بینا✔️
شبانہ
ان میں سے کوئی نہیں

Correct Answer Logic:

پروین شاکر کا ابتدائی تخلص 'بینا' تھا بعد میں انہوں نے 'شاکر' تخلص اختیار کیا۔

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Accounting & Finance QUESTION #1226

Question 14

Which of the following enjoys limited liability?

A general partnership.
A corporation.✔️
A sole proprietorship.
None of these

Correct Answer Logic:

A corporation (company) is a separate legal entity from its owners (shareholders). Shareholders enjoy limited liability — their personal assets are protected, and they can only lose the amount they invested. In a general partnership, all partners have unlimited personal liability. In a sole proprietorship, the owner has unlimited liability.

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Math Physics Chemistry Biology QUESTION #570

Question 15

Name the nutrition resulted by feeding on dead and decaying matter.

Saprophytic✔️
Parasitic
Symbiotic
Both B and C

Correct Answer Logic:

Saprophytic nutrition involves decomposing matter

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Maths QUESTION #2909

Question 16

Total surface area of a cube with side $3$ cm is:

$18\text{ cm}^2$
$27\text{ cm}^2$
$54\text{ cm}^2$✔️
$36\text{ cm}^2$

Correct Answer Logic:

Surface Area $= 6s^2 = 6 \times 3^2 = 6 \times 9 = 54$.

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Math Physics Chemistry Biology QUESTION #4274

Question 17

All are the functions of lysosome EXCEPT:

Intracellular digestion
Removal of the waste
Autophagy
Lipid synthesis✔️

Correct Answer Logic:

Lysosomes are involved in intracellular digestion, waste removal, and autophagy. Lipid synthesis occurs in the smooth endoplasmic reticulum, not in lysosomes.

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Maths QUESTION #2872

Question 18

Find $20\%$ of $30\%$ of $500$.

30✔️
150
20
60

Correct Answer Logic:

Calculation: $30\%$ of $500 = 150$. Then $20\%$ of $150 = 30$.

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General Knowledge QUESTION #11575

Question 19

Portrait and Landscape represent two different types of page:

Orientation✔️
Size
Layout
All of above

Correct Answer Logic:

Portrait and Landscape are the two standard page orientation options. Portrait is taller than wide (vertical); Landscape is wider than tall (horizontal). Page orientation is set via Layout tab → Orientation in Word. Portrait is the default; Landscape is used for wide tables, charts, and presentations.

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English QUESTION #8288

Question 20

Select the correct idiom meaning 'to work late into the night':

Burn the night oil
I Burn the late night oil
Burn the midnight oil✔️
Burn the oil

Correct Answer Logic:

The idiom is 'burn the midnight oil'.

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