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General Science and Ability QUESTION #247

Question 3721

What are total combinations of 09 things taken 03 at a time?

18
27
48
84✔️

Correct Answer Logic:

Using the formula nCr=n![citestart]/(r!(n−r)!), 9C3=(9×8×7)/(3×2×1)=84.+1

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Others section QUESTION #4682

Question 3722

General Augusto Pinochet is best identified as which of the following?

Leader of Contras in Nicaragua
Military Dictator of El Salvador
President of Chile✔️
Prime Minister of Argentina

Correct Answer Logic:

General Augusto Pinochet was the military dictator who ruled Chile from 1973 to 1990 following a coup against Salvador Allende.

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Paper-I (Pharmaceutics II (Industrial and Quality Control) and Pharmaceutics III (Hospital and Community Pharmacy)) QUESTION #5723

Question 3723

A pharmacist is reviewing the Hospital Formulary. Which part of the formulary would contain 'Nutrition products and hospital abbreviations'?

Part-1
Part-2
Part-3✔️
The Preface

Correct Answer Logic:

Part-3 of the Hospital Formulary contains special information like nutrition products and abbreviations.

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Physics QUESTION #5587

Question 3724

A large building has the following electrical loads all running simultaneously at 220 V mains:

Device	Quantity	Power Each
Bulbs	15	40 W
Bulbs	5	100 W
Fans	5	80 W
Heater	1	1000 W

What is the minimum capacity of the main fuse required?

12:00 AM✔️
14 A
8:00 AM
10:00 AM

Correct Answer Logic:

Total power: $P = 15 \times 40 + 5 \times 100 + 5 \times 80 + 1 \times 1000 = 600 + 500 + 400 + 1000 = 2500\,\text{W}$

Total current: $I = \frac{P}{V} = \frac{2500}{220} \approx 11.36\,\text{A}$

The fuse must safely carry this current. The smallest standard value that is greater than or equal to 11.36 A from the options is 12 A. Answer: A.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3072

Question 3725

A pharmacist prepares a topical cream for the 'Popliteal' region. Where should the patient apply this?

Behind the knee✔️
On the elbow
The armpit
The lower back

Correct Answer Logic:

The popliteal region refers to the hollow at the back of the knee.

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Basic Mathematics QUESTION #4625

Question 3726

A number is multiplied by $4$ and then divided by $2$. The result is $18$. What is the number?

$9$✔️
$4.5$
$36$
$72$

Correct Answer Logic:

Let number be $x$. $\frac{4x}{2} = 18 \Rightarrow 2x = 18 \Rightarrow x = 9$

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Biology QUESTION #4219

Question 3727

Lamarck theory of evolution was rejected experimentally by:

Earnest Hackle
Charles Darwin
August Wiseman✔️
Thomas R Malthus

Correct Answer Logic:

August Weismann rejected Lamarck's theory experimentally.

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General Knowledge QUESTION #282

Question 3728

World Tourism Day is observed every year on:

25 September
26 September
27 September✔️
None of these

Correct Answer Logic:

Since 1980, it has been observed globally on September 27.+1

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Chemistry QUESTION #1415

Question 3729

A reaction is exothermic if:

$\Delta H > 0$
$\Delta H < 0$✔️
$\Delta G > 0$
$\Delta G < 0$

Correct Answer Logic:

An exothermic reaction releases heat to the surroundings, meaning the enthalpy of the products is lower than that of the reactants. Therefore $\Delta H = H_{\text{products}} - H_{\text{reactants}} < 0$. A negative $\Delta H$ indicates an exothermic reaction. $\Delta G < 0$ indicates spontaneity, not necessarily exothermicity.

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Math (Module-1) QUESTION #5387

Question 3730

If $14x + 14 = 28$, what is the value of $7x + 7$?

$14$✔️
$21$
$42$
$56$

Correct Answer Logic:

Notice that $7x + 7$ is exactly half of $14x + 14$. If $14x + 14 = 28$, then $7x + 7 = \frac{28}{2} = 14$.

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Professional QUESTION #1797

Question 3731

Under Rule 42(a), petty purchases through a single quotation are permissible only when the value of the procurement does not exceed:

Fifty thousand Pakistani Rupees
One hundred thousand Pakistani Rupees✔️
Two hundred thousand Pakistani Rupees
Five hundred thousand Pakistani Rupees

Correct Answer Logic:

Rule 42(a) as substituted via S.R.O. 442(I)/2020 permits petty purchases through a single quotation without resorting to bidding or multiple quotations only when the procurement value is up to PKR 100,000 (one hundred thousand Pakistani Rupees).

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Biomedical Sciences QUESTION #3797

Question 3732

Which of the following is the primary physiological determinant of the heart's oxygen requirement?

Systolic blood pressure✔️
Diastolic blood pressure
Cardiac output
Blood volume

Correct Answer Logic:

Myocardial oxygen demand is most strongly influenced by systolic wall tension, which correlates with systolic blood pressure, heart rate, and contractility.

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Physics and Math QUESTION #744

Question 3733

If a magnet is in a non-uniform magnetic field it will experience:

Attraction
Repulsion
Neutral
None✔️

Correct Answer Logic:

A magnet placed in a non-uniform magnetic field experiences a net force (translational) as well as a torque. The exact effect depends on orientation; the paper marks 'None' as correct.

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Mathematics QUESTION #4124

Question 3734

The polar curve $r = 2\cos(\theta)$ represents which conic section?

Circle with center at origin, radius $2$
Circle with center at $(1, 0)$, radius $1$✔️
Circle with center at $(0, 1)$, radius $1$
Ellipse with semi-major axis $2$

Correct Answer Logic:

$r = 2\cos(\theta) \Rightarrow r^2 = 2r\cos(\theta) \Rightarrow x^2 + y^2 = 2x \Rightarrow (x-1)^2 + y^2 = 1$. Circle center $(1,0)$, radius $1$.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3463

Question 3735

The 'R' group in an amino acid determines its:

Color
Weight
Chemical properties and identity✔️
Length

Correct Answer Logic:

Different R-groups make each of the 20 amino acids unique.

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Urdu QUESTION #5257

Question 3736

بانگِ درا کتنے ادوار پر مشتمل ہے؟

ایک
دو
تین✔️
ان میں سے کوئی نہیں

Correct Answer Logic:

بانگِ درا تین ادوار پر مشتمل ہے: پہلا دور (بچپن)، دوسرا دور (جوانی) اور تیسرا دور (پختگی) (آپشن 2 پر تین ہے)۔

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3194

Question 3737

The 'Baroreceptor Reflex' is a mechanism for the rapid regulation of:

Blood Glucose
Blood Pressure✔️
Body Temperature
Respiratory Rate

Correct Answer Logic:

Stretch receptors in the carotid sinus and aortic arch detect pressure changes and adjust heart rate/vessel tone.

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Mechanical Engineering QUESTION #2544

Question 3738

The magnitude of the cross product $\mathbf{A}\times\mathbf{B}$ equals:

The area of the triangle formed by $\mathbf{A}$ and $\mathbf{B}$
The area of the parallelogram formed by $\mathbf{A}$ and $\mathbf{B}$✔️
The volume of the parallelepiped formed by $\mathbf{A}$ and $\mathbf{B}$
The scalar projection of $\mathbf{A}$ onto $\mathbf{B}$

Correct Answer Logic:

By definition, $|\mathbf{A}\times\mathbf{B}|=|A||B|\sin\theta$, which equals the area of the parallelogram spanned by the two vectors. The area of the triangle is half this value.

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Biomedical Sciences QUESTION #3808

Question 3739

In hepatic bilirubin processing, where does the conjugation of bilirubin primarily take place?

Erythrocyte
Intestine
Liver✔️
Kidney

Correct Answer Logic:

Bilirubin conjugation (primarily with glucuronic acid via UGT enzymes) occurs in hepatocytes of the liver, converting water-insoluble unconjugated bilirubin to water-soluble conjugated bilirubin.

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Mechanical Engineering QUESTION #2456

Question 3740

The torque $T_r$ required to raise a load $F$ with a square-threaded power screw (pitch diameter $d_m$, lead $l$, friction $\mu$) is:

$T_r = \frac{Fd_m}{2}\left(\frac{l - \pi\mu d_m}{\pi d_m + \mu l}\right)$
$T_r = \frac{Fd_m}{2}\left(\frac{l + \pi\mu d_m}{\pi d_m - \mu l}\right)$✔️
$T_r = \frac{F l}{2\pi}$
$T_r = \mu F d_m$

Correct Answer Logic:

From force equilibrium on the unrolled thread diagram for raising: $T_r = \frac{Fd_m}{2}\cdot\frac{l+\pi\mu d_m}{\pi d_m - \mu l}$. The ideal torque (no friction, $\mu=0$) is $T_0=Fl/(2\pi)$, and screw efficiency $e=T_0/T_r=Fl/(2\pi T_r)$.

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