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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3641

Question 1

'Belladonna' literally means:

Deadly nightshade
Beautiful lady✔️
Sweet flower
Black root

Correct Answer Logic:

In the past, women used it to dilate their pupils to look more attractive.

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Electrical Engineering QUESTION #2185

Question 2

A $100\,\text{kVA}$, $11\,\text{kV}/400\,\text{V}$ transformer has iron losses $P_i = 500\,\text{W}$ and full-load copper losses $P_{cu} = 1200\,\text{W}$. The efficiency at half full-load and $0.8$ pf lagging is:

$98.0\%$✔️
$96.1\%$
$97.3\%$
$94.5\%$

Correct Answer Logic:

Output at half load $= 0.5\times100\times10^3\times0.8 = 40{,}000\,\text{W}$. Cu loss $= (0.5)^2\times1200 = 300\,\text{W}$. Iron loss $= 500\,\text{W}$ (constant). $\eta = \frac{40000}{40000+800}\times100 = \frac{40000}{40800} \approx 98.0\%$.

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Electrical Engineering QUESTION #2172

Question 3

For a silicon PN junction at $T=300\,\text{K}$ with $N_A = 10^{17}\,\text{cm}^{-3}$, $N_D = 10^{15}\,\text{cm}^{-3}$, $n_i = 1.5\times10^{10}\,\text{cm}^{-3}$, the built-in potential $V_{bi} = \frac{kT}{q}\ln\!\left(\frac{N_AN_D}{n_i^2}\right)$ is approximately:

$0.694\,\text{V}$✔️
$0.026\,\text{V}$
$1.12\,\text{V}$
$0.3\,\text{V}$

Correct Answer Logic:

$V_{bi} = 0.026\ln\!\left(\frac{10^{32}}{(1.5\times10^{10})^2}\right) = 0.026\ln(4.44\times10^{11}) = 0.026 \times 26.7 \approx 0.694\,\text{V}$.

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Agronomy QUESTION #2100

Question 4

Biological nitrogen fixation (BNF) by soybean-Bradyrhizobium japonicum symbiosis requires which essential micronutrient as a component of the nitrogenase enzyme complex?

Zinc (Zn) — as a cofactor for auxin-mediated nodule initiation
Molybdenum (Mo) — as a component of the iron-molybdenum cofactor (FeMo-co) at the active site of nitrogenase that reduces $N_2$ to $NH_3$✔️
Boron (B) — for nodule cell wall synthesis and longevity
Copper (Cu) — for leghemoglobin synthesis in nodule cortex

Correct Answer Logic:

Nitrogenase consists of two proteins: dinitrogenase (MoFe protein) containing the FeMo-co active site where $N_2$ is reduced ($N_2 + 8H^+ + 8e^- + 16ATP \rightarrow 2NH_3 + H_2 + 16ADP + 16P_i$), and dinitrogenase reductase (Fe protein). Mo is irreplaceable at the active site — Mo deficiency severely impairs BNF. Fe is also essential (leghemoglobin, Fe-S clusters). Both Mo and Fe are required for full BNF activity.

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Islamic Studies QUESTION #206

Question 5

What was the main source of cultural influence in pre-Islamic Arabian society?

Persian culture
Egyptian civilization
Christian and Jewish beliefs✔️
None of these

Correct Answer Logic:

Proximity to Byzantine and Sassanid borders brought Christian/Jewish influences.

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Urdu QUESTION #5297

Question 6

پاؤں تلے زمین نکلنا کا مفہوم کیا ہے؟

گرفتار ہو جانا
غلط فہمی کا شکار ہونا
گر جانا
گھبرا جانا✔️

Correct Answer Logic:

پاؤں تلے زمین نکلنا محاورے کا مطلب ہے اچانک گھبرا جانا یا حواس باختہ ہونا۔

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Urdu QUESTION #5239

Question 7

میں نے یہ بال دھوپ میں سفید نہیں کیے۔ علمِ بیان کی رو سے یہ کیا ہے؟

تعریض
مجازِ مرسل
کنایہ✔️
استعارہ

Correct Answer Logic:

یہ کنایہ ہے کیونکہ بال دھوپ میں سفید نہیں کیے، اس سے مراد ہے کہ تجربہ اور عمر کا ثبوت ہے۔

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Professional QUESTION #1909

Question 8

Under Rule 2(1)(xviii) the term 'Secretary' includes which of the following officers when there is no Secretary in charge of a Division?

Deputy Secretary
Section Officer
Additional Secretary Senior Joint Secretary or Joint Secretary in charge of the Division or Ministry✔️
Under Secretary

Correct Answer Logic:

Rule 2(1)(xviii) states that where there is no Secretary the term Secretary means the Additional Secretary Senior Joint Secretary or Joint Secretary in charge of the Division or Ministry.

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MCQs Section QUESTION #4841

Question 9

Pick the word nearly similar in meaning to "DENOUEMENT"

Denunciation
Dormancy
Termination✔️
Explanation

Correct Answer Logic:

Denouement refers to the final resolution or conclusion of a plot or sequence of events, especially in a literary work. Termination (ending/conclusion) is closest in meaning.

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Mechanical Engineering QUESTION #2458

Question 10

The module $m$ of a gear in SI units is defined as:

Number of teeth per millimeter of pitch diameter
Pitch diameter in millimeters divided by number of teeth: $m = d/N$✔️
Circular pitch divided by $\pi$
Diametral pitch in inverse millimeters

Correct Answer Logic:

Module $m = d/N$ (pitch diameter in mm per tooth). The relationships are: $m = 25.4/P_d$ and $p \cdot P_d = \pi$ (English); $p/m = \pi$ (SI).

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Architecture QUESTION #2363

Question 11

In the analysis of indeterminate structures using the Flexibility (Force) Method, the compatibility equation for a structure with $n$ redundants is expressed in matrix form as:

$[F]\{X\} = \{D_0\}$
$[K]\{D\} = \{P\}$
$[F]\{X\} + \{D_0\} = \{0\}$✔️
$[K]\{X\} = -\{D_0\}$

Correct Answer Logic:

The compatibility equation in the Force Method is $[F]\{X\} + \{D_0\} = \{0\}$ (or equivalently $[F]\{X\} = -\{D_0\}$), where $[F]$ is the flexibility matrix (flexibility coefficients $f_{ij}$ = displacement at $i$ due to unit force at $j$), $\{X\}$ is the vector of redundants, and $\{D_0\}$ is the displacement vector of the released structure (primary structure) under applied loads. Option B is the stiffness method equation.

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Urdu QUESTION #5130

Question 12

دل رکھنا کا کیا مطلب ہے؟

کسی کو ناراض کرنا
کسی کی دل آزاری کرنا
دل کی بیماری کا شکار ہونا
تسلی دینا✔️

Correct Answer Logic:

دل رکھنا محاورے کا مطلب ہے کسی کی تسلی کرنا یا خوش کرنا۔

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3184

Question 13

'Erythropoietin' (EPO), which regulates RBC production, is primarily secreted by the:

Bone Marrow
Spleen
Kidney✔️
Liver

Correct Answer Logic:

Hypoxia (low oxygen) stimulates the kidneys to release EPO.

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English QUESTION #2789

Question 14

Which is the CORRECTLY SPELLED word?

Definately
Definitly
Definitely✔️
Defenitely

Correct Answer Logic:

The correct spelling is 'Definitely' — from 'definite' + 'ly'. A common error is writing 'definately'. Remember the root word 'definite' and add '-ly'.

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Security Measures to Maintain Law and Order QUESTION #948

Question 15

Why is 'Record Keeping' important for an Assistant Director?

To waste paper
To provide accountability and audit trails✔️
To impress the Director General
To hide mistakes

Correct Answer Logic:

Accurate records are essential for legal defense, performance review, and investigating security failures.

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Islamic Studies QUESTION #655

Question 16

"Kitab-ul-Kharaj" was written by:

Imam Abu Hanifa
Imam Abu Yusuf✔️
Imam Malik
None of these

Correct Answer Logic:

Imam Abu Yusuf wrote it at the request of Caliph Harun al-Rashid.

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Math Physics Chemistry Biology QUESTION #801

Question 17

Oxidation of $\text{NO}$ in air gives:

$\text{N}_2\text{H}_4$
$\text{NH}_4^+$
$\text{NH}_3$
None✔️

Correct Answer Logic:

Oxidation of NO in air gives $\text{NO}_2$: $2\text{NO} + \text{O}_2 \rightarrow 2\text{NO}_2$. Since $\text{NO}_2$ is not listed, the answer is None.

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Statistics QUESTION #1977

Question 18

In Bowley's coefficient of skewness defined as $S_k = \dfrac{Q_3 + Q_1 - 2Q_2}{Q_3 - Q_1}$, the value lies in the range:

0 to 1
$-1$ to $+1$✔️
$-3$ to $+3$
$-\infty$ to $+\infty$

Correct Answer Logic:

Bowley's coefficient of skewness is bounded between $-1$ and $+1$ because the numerator $Q_3 + Q_1 - 2Q_2$ can never exceed the denominator $Q_3 - Q_1$ in absolute value, since $Q_2$ always lies between $Q_1$ and $Q_3$.

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Security Measures to Maintain Law and Order QUESTION #923

Question 19

What is the best method for verifying the identity of someone at a secure gate?

Checking their clothing
Verifying government-issued ID✔️
Asking for their name
Relying on facial recognition alone

Correct Answer Logic:

Official identification remains the standard for ensuring only authorized personnel enter sensitive areas.

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Chemistry QUESTION #1106

Question 20

Which one of the following compounds can exist as cis-trans isomers?

1,1-Dimethylcyclopropane
1,2-Dimethylcyclohexane✔️
Pent-1-ene
2-Methylhex-2-ene

Correct Answer Logic:

For cis-trans isomerism in cyclic compounds, each carbon of the ring must bear two DIFFERENT substituents. 1,1-Dimethylcyclopropane: one carbon has two identical methyls → no cis-trans. 1,2-Dimethylcyclohexane: each of C1 and C2 has one methyl and one H → different groups on each → cis-trans isomers exist ✓. Pent-1-ene (CH$_2$=CHCH$_2$CH$_2$CH$_3$): terminal alkene, one end has two H → no isomerism. 2-Methylhex-2-ene: one end has two methyls → no cis-trans.

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