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Biology Zoology Botany QUESTION #10788

The myelin sheath of peripheral nerve fibres is derived from which cells?

Microglia
Neuroglial cells
Schwann cells✔️
Nerve cells

Correct Answer Logic:

Schwann cells are the glial cells of the peripheral nervous system (PNS) that produce the myelin sheath by wrapping their plasma membrane repeatedly around the axon. In the central nervous system (CNS), myelin is produced by oligodendrocytes. Microglia are the immune cells of the CNS; neuroglial cells is a general term; nerve cells (neurons) do not produce myelin.

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Urdu QUESTION #1399

Question 2

مرزا غالب نے کس کے نام سب سے زیادہ خطوط لکھے؟

منشی ہرگوپال تفتہ✔️
میر مہدی مجروح
مرزا حاکم علی مہر
سب کو برابر لکھے

Correct Answer Logic:

مرزا غالب نے سب سے زیادہ خطوط اپنے شاگرد منشی ہرگوپال تفتہ کے نام لکھے۔ غالب کے خطوط اردو نثر میں ایک انقلابی قدم ہیں۔ انہوں نے خطوط نویسی کو سرکاری اور بناوٹی اسلوب سے آزاد کرا کر بول چال کی زبان میں لکھا۔ ان کے خطوط کا مجموعہ ''اردوئے معلٰی'' اردو ادب کا شاہکار ہے۔

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Islamic Studies QUESTION #237

Question 3

The author of Kitab al-Hind is:

Amir Khusrau
Abu al-Fazl
Abu Rayhan al-Biruni✔️
None of these

Correct Answer Logic:

Al-Biruni wrote this comprehensive study of Indian culture, religion, and science.

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Social Studies QUESTION #10054

Question 4

When siblings are of opposite sexes, their respective children are termed:

First cousins
Parallel cousins
Cross cousins✔️
None of these

Correct Answer Logic:

Children of opposite-sex siblings (e.g., a brother and sister) are called cross cousins.

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Dairy Food Science and Technology QUESTION #5925

Question 5

In standardization of milk using the Pearson Square method to produce $3.5\%$ fat milk from full-fat milk ($6\%$ fat) and skim milk ($0.1\%$ fat), the proportion of full-fat milk required is:

$\dfrac{3.4}{5.9}$ parts full-fat milk per total✔️
$\dfrac{3.5}{6.0}$ parts full-fat milk per total
$\dfrac{0.1}{5.9}$ parts full-fat milk per total
$\dfrac{2.5}{5.9}$ parts full-fat milk per total

Correct Answer Logic:

Pearson Square: desired fat $= 3.5\%$. Parts full-fat $= 3.5 - 0.1 = 3.4$. Parts skim $= 6.0 - 3.5 = 2.5$. Total $= 3.4 + 2.5 = 5.9$. Proportion of full-fat milk $= \dfrac{3.4}{5.9}$.

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Education QUESTION #10909

Question 6

The practice of organising and studying a specific topic repeatedly for better retention is the purpose of:

Drill method✔️
Lesson plan
Homework
Microteaching technique

Correct Answer Logic:

The drill method involves the repeated, systematic practice of a specific skill or topic to achieve mastery and long-term retention. Through repetition and practice, information or skills are consolidated from short-term to long-term memory. Drill is particularly effective for mathematics facts, language rules, vocabulary, and procedural skills. While sometimes considered mechanical, well-designed drills with varied practice can be engaging and highly effective for automaticity.

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Accounting Finance and Punjab Sales Tax on Services QUESTION #2556

Question 7

Under section 16C of the Punjab Sales Tax on Services Act, 2012, a registered person shall NOT be allowed to adjust input tax in a tax period in excess of what percentage of the output tax for that tax period?

Seventy percent
Eighty percent
Ninety percent✔️
One hundred percent

Correct Answer Logic:

Section 16C(1) as amended provides that a registered person shall not be allowed to adjust input tax in a tax period in excess of ninety percent of the output tax for that tax period.

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MBBS QUESTION #10190

Question 8

The sinoatrial (SA) node's blood supply, and in most individuals the atrioventricular (AV) node's blood supply as well, arise from which coronary artery?

Left circumflex artery in all individuals
Right coronary artery (right-dominant circulation, the majority pattern)✔️
Left anterior descending artery
Left main coronary artery

Correct Answer Logic:

In the majority (right-dominant) pattern, the right coronary artery gives rise to the SA nodal artery and, via the posterior descending/AV nodal branch, supplies the AV node — explaining why inferior wall myocardial infarctions (right coronary territory) are commonly complicated by bradyarrhythmias and heart block.

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MCQs Section QUESTION #5250

Question 9

ریختے کے تمہیں استاد نہیں ہو غالب، یہ شعر مرزا غالب نے کس کے لیے کہا؟

مومن خان مومن
میر تقی میر✔️
ابنِ انشا
ان میں سے کوئی نہیں

Correct Answer Logic:

یہ شعر مرزا غالب نے میر تقی میر کے لیے کہا جن کی شاعری کو وہ بہت سراہتے تھے۔

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MCQs Section QUESTION #5267

Question 10

Heart Attack کس شاعر کی نظم ہے؟

این ایم راشد
میراجی
ناصر کاظمی
فیض احمد فیض✔️

Correct Answer Logic:

Heart Attack فیض احمد فیض کی مشہور نظم ہے (متن میں آپشن 3 پر فیض ہے)۔

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Pharmacokinetics and Pharmacodynamics QUESTION #3849

Question 11

Given $\text{Na}\ M_r = 23$ and $\text{Cl}\ M_r = 35$, what is the sodium ion concentration of a $0.9\%\ \text{w/v}$ sodium chloride solution?

$100\ \text{mmol/L}$
$130\ \text{mmol/L}$
$150\ \text{mmol/L}$✔️
$270\ \text{mmol/L}$

Correct Answer Logic:

$0.9\%\ \text{NaCl} = 9\ \text{g/L}$. $M_r$ of NaCl $= 23 + 35 = 58\ \text{g/mol}$. Moles $= \dfrac{9}{58} = 0.1552\ \text{mol/L} \approx 155\ \text{mmol/L} \approx 150\ \text{mmol/L}$.

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Mathematics QUESTION #1276

Question 12

The order of the cyclic subgroup generated by $\bar{6}$ in $\mathbb{Z}_{18}$ is:

2
3✔️
6
9

Correct Answer Logic:

The order of $\bar{a}$ in $\mathbb{Z}_n$ is $\dfrac{n}{\gcd(n,a)}$. Here $n=18$, $a=6$: order $=\dfrac{18}{\gcd(18,6)}=\dfrac{18}{6}=3$.

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Mathematics QUESTION #1306

Question 13

For the Trapezoidal Rule applied to $\int_1^3\dfrac{1}{x^2}\,dx$ using 5 points, the step size $h$ is:

0.5✔️
0.25
1
0.4

Correct Answer Logic:

With 5 points on $[1,3]$, there are 4 subintervals. Step size $h=\dfrac{3-1}{4}=\dfrac{2}{4}=0.5$. The five points are $x=1.0, 1.5, 2.0, 2.5, 3.0$.

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Math Physics Chemistry Biology QUESTION #7756

Question 14

Which part of the brain primarily controls your sense of balance and coordination?

Amygdala
Cerebellum✔️
Hippocampus
Medulla Oblongata

Correct Answer Logic:

The cerebellum processes sensory information and coordinates voluntary movements, balance, posture, and fine motor control. Amygdala: emotion; Hippocampus: memory; Medulla: autonomic functions.

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Math Physics Chemistry Biology QUESTION #810

Question 15

Which is not present abundantly in Earth's crust?

Na
Al
Ba✔️
Ca

Correct Answer Logic:

Barium (Ba) is a trace element in Earth's crust. Oxygen, silicon, aluminium, calcium, and sodium are among the most abundant elements.

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Geography QUESTION #1241

Question 16

Moraine dragged along the sides of a glacier is called:

Lateral✔️
Medial
Ground
None of these

Correct Answer Logic:

Lateral moraine is the ridge of rock debris (till) that accumulates along the sides (margins) of a valley glacier. It consists of material eroded from the valley walls by the glacier's movement. Medial moraine forms in the middle of a glacier where two glaciers merge. Ground moraine is deposited beneath the glacier.

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Chemistry QUESTION #1435

Question 17

In glycolysis, the enzyme hexokinase catalyzes the conversion of:

Glucose to glucose-6-phosphate✔️
Pyruvate to lactate
Fructose-6-phosphate to fructose-1,6-bisphosphate
None of these

Correct Answer Logic:

Hexokinase is the first enzyme of glycolysis. It catalyzes the phosphorylation of glucose using ATP: $\text{Glucose} + \text{ATP} \xrightarrow{\text{hexokinase}} \text{Glucose-6-phosphate} + \text{ADP}$. This irreversible step traps glucose inside the cell. Phosphofructokinase-1 catalyzes the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate.

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Biology QUESTION #7248

Question 18

Which one of the following is a slime mould?

Anabaena
Rhizopus
Physarum✔️
Thiobacillus

Correct Answer Logic:

Physarum is a classic example of a slime mould (Myxomycetes/Mycetozoa). Anabaena is a cyanobacterium, Rhizopus is a zygomycete fungus, and Thiobacillus is a chemolithotropic bacterium. Slime moulds are placed in kingdom Protista.

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English Literature QUESTION #10716

Question 19

The sound produced with air passing through the nose — making the 'ng' sound as in 'sing' — is classified as:

Nasal✔️
Uvula
Velum
Bilabial

Correct Answer Logic:

The 'ng' sound /ŋ/ as in 'sing' or 'ring' is a velar nasal consonant. It is classified as a nasal sound because air flows through the nasal cavity while the oral cavity is blocked. The velum (soft palate) is lowered to allow nasal airflow. Bilabial sounds involve both lips (/p/, /b/, /m/); uvular sounds are produced at the uvula.

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Math Physics Chemistry Biology QUESTION #11319

Question 20

Which of the following is a multiple allele?

A
B
C
D✔️

Correct Answer Logic:

Gene D is an example of a multiple allele.

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