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Physics QUESTION #7043

Unpolarised light with intensity $I_0$ passes through polaroid A, then through polaroid B. If the transmission axis of B is at $45^\circ$ to A, find the final intensity.

$I_0$
$\frac{I_0}{2}$
$\frac{I_0}{4}$✔️
$\frac{I_0}{8}$

Correct Answer Logic:

After passing through polaroid A, the intensity becomes $I_1 = \frac{I_0}{2}$.

According to Malus's Law, after passing through polaroid B:

$I_2 = I_1 \cos^2 \theta = \frac{I_0}{2} \cos^2(45^\circ) = \frac{I_0}{2} \times \left( \frac{1}{\sqrt{2}} \right)^2 = \frac{I_0}{4}$.

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Mathematics QUESTION #1256

Question 2

Let $N$ be a normal subgroup of $G$ and $H$ a subgroup of $G$. Which of the following is a subgroup of $G$?

$N \cap H$
$N \cup H$
$NH = \{nh : n\in N, h\in H\}$
Both (A) and (C)✔️

Correct Answer Logic:

Both $N\cap H$ (intersection of subgroups) and $NH$ (product set when $N$ is normal) are subgroups of $G$. The union $N\cup H$ is generally NOT a subgroup. Since the question asks which one from the listed options forms a subgroup, and option (D) correctly identifies both valid subgroup constructions, (D) is the complete answer.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3048

Question 3

A 'Chemical Incompatibility' results from:

Improper dosing
A reaction like oxidation, reduction, or acid-base reaction✔️
A change in the container material
The drug tasting bad

Correct Answer Logic:

Chemical incompatibility occurs when a chemical reaction takes place between the ingredients.

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Verbal Reasoning QUESTION #70

Question 4

A box contains 5 red, 3 blue, and 2 green balls. Two balls are drawn at random without replacement.

1/5
7/15
17/45✔️
8/15

Correct Answer Logic:

Total balls = 10

Use complement method:

P(at least one green)

= 1 − P(no green)

Balls without green = 8

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Urdu QUESTION #5068

Question 5

تم مرے پاس ہوتے ہو گویا جب کوئی دوسرا نہیں ہوتا، یہ شعر کس کا ہے؟

غالب✔️
میر تقی میر
میر درد
ان میں سے کوئی نہیں

Correct Answer Logic:

یہ مشہور شعر مومن خان مومن کا ہے۔ تاہم بعض روایات میں اسے غالب سے بھی منسوب کیا جاتا ہے۔

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General Knowledge QUESTION #4477

Question 6

The central idea of Anatol Lieven’s book “Pakistan: A Hard Country” is:

Pakistan is undefeatable
Pakistan is hard-wired
Society is extraordinarily resilient✔️
None of these

Correct Answer Logic:

Lieven argues Pakistan’s society is resilient despite political instability.

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Math Physics Chemistry Biology QUESTION #749

Question 7

A completely filled band is called:

Forbidden band
Conduction band
Both
None✔️

Correct Answer Logic:

A completely filled energy band is called the Valence band. Since valence band is not listed the answer is None.

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Biology Zoology Botany QUESTION #1377

Question 8

Which organelle is involved in modifying, sorting, and packaging proteins for secretion?

Endoplasmic reticulum
Golgi apparatus✔️
Lysosome
Peroxisome

Correct Answer Logic:

The Golgi apparatus (Golgi complex) is the cell's main processing and distribution centre for proteins and lipids. Proteins synthesised in the rough endoplasmic reticulum are transported to the Golgi where they are modified (glycosylation, phosphorylation), sorted, and packaged into vesicles for secretion, delivery to lysosomes, or incorporation into the plasma membrane.

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Accounting & Finance QUESTION #6151

Question 9

J Limited makes furniture with a mark-up of 40%. A job 10 km away involves: Materials $400; Labour $240; Travel $2 per km each part of journey. What price will the company quote?

$916
$924
$936
$952✔️

Correct Answer Logic:

Option D ($952) is correct.

Travel = 10 km each way = 20 km × $2 = $40

Total cost = $400 + $240 + $40 = $680

Quoted price = $680 × 1.40 = $952

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Education QUESTION #6891

Question 10

Effective Behavioral Support Systems (EBS) are described as 'team-based' processes. Which of the following is the MOST important structural reason for this team-based approach?

It distributes the financial cost of behavioral interventions across departments
It ensures shared ownership and a school-wide commitment to addressing the unique behavioral needs of individual students✔️
It allows teachers to avoid individual accountability for classroom management failures
It enables the school to apply for external grants for behavioral programming

Correct Answer Logic:

EBS is explicitly designed as a team-based process because behavioral issues require coordinated, school-wide commitment — not isolated teacher interventions. Shared ownership means that all stakeholders (teachers, administrators, support staff) collectively develop, implement, and monitor a behavioral support plan, making it more coherent and sustainable.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3248

Question 11

'Cyanosis' is most easily observed in which areas?

Hair and nails
Lips, tongue, and nail beds✔️
Shoulders
Knees

Correct Answer Logic:

Thin-skinned areas with rich blood supply show the blue tint of deoxygenated blood clearly.

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General Knowledge QUESTION #4788

Question 12

RAW is an abbreviation that stands for which of the following?

Radical Army Wing
Research and Warning
Research and Analysis Wing✔️
Regional Advisory Watch

Correct Answer Logic:

RAW (Research and Analysis Wing) is India's primary foreign intelligence agency, established in 1968 by Prime Minister Indira Gandhi.

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Civil Procedure QUESTION #3703

Question 13

A plaintiff sues a defendant. After discovery, the defendant moves for summary judgment. The plaintiff files a response stating they need more time to take depositions of key witnesses who are currently out of the country. What should the court do?

Grant the summary judgment because the plaintiff failed to provide evidence.
Defer considering the motion or deny it to allow time for the discovery under Rule 56(d).✔️
Grant the motion but allow the plaintiff to re-open it later.
Dismiss the case for failure to prosecute.

Correct Answer Logic:

Rule 56(d) provides that if a nonmovant shows by affidavit or declaration that, for specified reasons, it cannot present facts essential to justify its opposition, the court may: (1) defer considering the motion or deny it; (2) allow time to obtain affidavits or declarations or to take discovery; or (3) issue any other appropriate order.

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Boilers Mechanical Engineering QUESTION #2400

Question 14

In the general Bernoulli energy equation, the term $H_A$ represents:

Head loss due to friction
Energy added to the fluid by a pump (pump head)✔️
Energy extracted from the fluid by a turbine
Velocity head at section A

Correct Answer Logic:

In the extended Bernoulli equation: $H_A$ is the head added by a pump, $H_L$ is the head loss due to friction, and $H_E$ is the head extracted by a turbine.

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