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Dairy Food Science and Technology QUESTION #5987

The function of 'cutting' the rennet curd into cubes in cheese making is to:

Add flavor compounds to the curd surface
Increase the surface area of curd to facilitate rapid and controlled whey expulsion (syneresis), with smaller cuts producing drier cheeses (e.g. Parmesan: pea-sized cubes; Camembert: large irregular cubes)✔️
Allow brine to penetrate the curd for salting
Mix starter culture evenly throughout the curd

Correct Answer Logic:

Curd cutting creates more surface area for whey drainage. Curd cube size directly determines final cheese moisture: smaller cuts $\rightarrow$ more surface area $\rightarrow$ faster whey expulsion $\rightarrow$ lower moisture (hard cheeses like Parmesan: pea-sized cuts); larger cuts $\rightarrow$ slower drainage $\rightarrow$ higher moisture (soft cheeses like Camembert).

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MCQs Section QUESTION #5269

Question 9642

اردو کی مشہور نظم 'آدمی نامہ' کس کی ہے؟

مولوی عبدالحق
نظیر اکبرآبادی✔️
مرزا اسداللہ غالب
ان میں سے کوئی نہیں

Correct Answer Logic:

آدمی نامہ نظیر اکبرآبادی کی مشہور نظم ہے جو انسانی زندگی کی حقیقت بیان کرتی ہے۔

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Planning QUESTION #4981

Question 9643

What does the Location Quotient (LQ) measure in regional economic analysis?

Absolute employment in a sector
Regional specialization in an industry✔️
Total regional GDP
Population density

Correct Answer Logic:

Location Quotient formula $LQ = \frac{(e_i/e)}{(E_i/E)}$ compares a region's share of employment in sector $i$ to the national share. LQ > 1 indicates regional specialization; LQ < 1 indicates underrepresentation relative to national average.

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Civil / Architecture QUESTION #2356

Question 9644

In the Response Spectrum Method of seismic analysis for a multi-degree-of-freedom (MDOF) structure, which modal combination rule accounts for both the modal responses and the correlation between closely spaced modes?

SRSS (Square Root of Sum of Squares)
CQC (Complete Quadratic Combination)✔️
Absolute Sum (ABS)
SRSS with 10% rule

Correct Answer Logic:

The Complete Quadratic Combination (CQC) rule accounts for cross-correlation between modes, which is significant when modal frequencies are closely spaced (within 10% of each other). SRSS assumes all modes are uncorrelated (appropriate for well-separated modes). ABS is overly conservative. CQC reduces to SRSS when all modes are well-separated (correlation coefficients approach zero).

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General Knowledge QUESTION #8634

Question 9645

Which is the largest island in the world?

Australia
Japan
Greenland✔️
Indonesia

Correct Answer Logic:

Greenland is the world's largest island.

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English QUESTION #2651

Question 9646

Change the sentence to active voice: 'The window was broken by the boy.'

The boy breaks the window.
The boy had broken the window.
The boy broke the window.✔️
The boy is breaking the window.

Correct Answer Logic:

The passive 'was broken' indicates Simple Past, so the active verb must be 'broke'.

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Boilers Mechanical Engineering QUESTION #3981

Question 9647

The 'Economizer' in a boiler system is used to heat:

The fuel before combustion
Feed water using flue gases✔️
The steam to make it superheated
The air entering the furnace

Correct Answer Logic:

Economizers improve efficiency by recovering waste heat from exhaust gases to pre-heat feed water.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3446

Question 9648

Which mineral is required for the 'Activation of ATP' in many enzymatic reactions?

Calcium
Magnesium✔️
Sodium
Chloride

Correct Answer Logic:

Many kinases require $Mg^{2+}$ as a cofactor.

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Mathematics QUESTION #4140

Question 9649

If $\vec{a} \cdot (\vec{b} \times \vec{c}) = 0$, what does this imply?

$\vec{a}$ is perpendicular to $\vec{b}$
$\vec{a}$, $\vec{b}$, $\vec{c}$ are coplanar✔️
$\vec{b}$ is parallel to $\vec{c}$
$\vec{a} = \vec{0}$

Correct Answer Logic:

The scalar triple product $\vec{a} \cdot (\vec{b} \times \vec{c})$ equals the volume of the parallelepiped formed by the three vectors. If zero, the vectors are coplanar (linearly dependent).

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Sociology QUESTION #1673

Question 9650

Immanuel Wallerstein's World-Systems Theory, drawing on dependency theory and Braudel's longue durée, proposes a tripartite geographical and economic structure of the modern capitalist world-system. Which of the following correctly identifies this structural division?

Classes, states, and empires as the primary units of analysis
Core, semi-periphery, and periphery nations differentiated by their position in the global division of labor✔️
Developed, underdeveloped, and developing nations classified by per capita income
Capitalist, feudal, and socialist economic systems competing for global dominance

Correct Answer Logic:

Wallerstein's World-Systems Theory (introduced in 'The Modern World-System,' 1974) divides the capitalist world-economy into three structural zones: the Core (wealthy, diversified, high-wage economies that exploit the periphery), the Periphery (poor, raw-material exporting economies), and the Semi-periphery (intermediate economies that exploit the periphery while being exploited by the core).

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Biology Zoology Botany QUESTION #1344

Question 9651

Most crustaceans have blue blood due to the presence of:

Haemoglobin
Erythrocruorin
Haemocyanin✔️
None of these

Correct Answer Logic:

Haemocyanin (haemocyanine) is a copper-containing respiratory pigment found in the blood (haemolymph) of most crustaceans (crabs, lobsters, shrimps) and molluscs. It appears blue when oxygenated because the copper atoms bind oxygen and cause the blue coloration, similar to how iron in haemoglobin gives blood its red color. Erythrocruorin is an iron-based pigment in some worms.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3650

Question 9652

The 'Adrenal' hormone used to treat severe allergic reactions is:

Insulin
Thyroxine
Epinephrine (Adrenaline)✔️
Estrogen

Correct Answer Logic:

Epinephrine is the drug of choice for anaphylaxis.

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General Knowledge QUESTION #8638

Question 9653

In which century did Amir Timur (Tamerlane) invade India?

12th Century
13th Century
14th Century✔️
None of above

Correct Answer Logic:

Timur invaded India in 1398 AD (14th century).

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Chemistry QUESTION #7391

Question 9654

The liquefied metal that expands on solidification is:

Ga✔️
Al
Zn
Cu

Correct Answer Logic:

Gallium (Ga) is one of the few substances (like water and bismuth) that expands on solidification. This is due to its unusual crystal structure in the solid state, where Ga–Ga covalent bonds result in a less dense solid than the liquid. Gallium has a very low melting point (29.76°C) and is liquid at or slightly above room temperature.

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Biology Zoology Botany QUESTION #10779

Question 9655

Which structure primarily helps in maintaining the shape of the eyeball?

Neuroglia
Aqueous humor
Vitreous humor✔️
Perikaryon

Correct Answer Logic:

The vitreous humor is the clear, gel-like substance filling the large posterior chamber of the eyeball (between the lens and the retina). It maintains the spherical shape of the eye, supports the retina, and transmits light. The aqueous humor fills the smaller anterior chamber and maintains intraocular pressure, but the vitreous (comprising ~80% of eye volume) is primarily responsible for the eye's overall shape.

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Mathematics QUESTION #7448

Question 9656

Two sides of a rhombus are along the lines $x - y + 1 = 0$ and $7x - y - 5 = 0$. If its diagonals intersect at $(-1, -2)$, then which one of the following is a vertex of this rhombus?

$(-3, -8)$
$(\frac{1}{3}, -\frac{8}{3})$
$(-\frac{10}{3}, -\frac{7}{3})$✔️
$(-3, -9)$

Correct Answer Logic:

The two given lines intersect at a vertex. Solving $x-y+1=0$ and $7x-y-5=0$: subtracting gives $6x = 6$, so $x=1$ and $y=2$. This vertex is $(1,2)$. In a rhombus, diagonals bisect each other. If one vertex is $(1,2)$ and center is $(-1,-2)$, the opposite vertex is $(-3,-6)$. The other two vertices lie on the given lines and are symmetric about center. For a point on $x-y+1=0$, let it be $(t, t+1)$. For it to be at the same distance from center as $(1,2)$: $(t+1)^2 + (t+3)^2 = 4 + 16 = 20$. Expanding: $t^2+2t+1+t^2+6t+9 = 20$, giving $2t^2+8t-10=0$ or $t^2+4t-5=0$, so $t=-5$ or $t=1$. The vertex is $(-5,-4)$. By symmetry about $(-1,-2)$, the fourth vertex is $(3,0)$. Hmm, these don't match options. Let me reconsider: the answer given is C, which is $(-\frac{10}{3}, -\frac{7}{3})$. This point should lie on one of the given lines and be at the correct distance from the center.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3013

Question 9657

Which ointment base is known as a 'Greaseless' base?

Oleaginous base
Absorption base
Water-soluble base✔️
Emulsion base

Correct Answer Logic:

Water-soluble bases (like PEG) contain no fats and are completely washable.

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MCQs Section QUESTION #5184

Question 9658

سوانح عمری لکھنے میں حالی کے علاوہ دوسرا اہم نام کس کا ہے؟

شبلی نعمانی✔️
احمد ندیم قاسمی
سر سید احمد خان
ان میں سے کوئی نہیں

Correct Answer Logic:

اردو سوانح نگاری میں حالی کے بعد مولانا شبلی نعمانی کا نام بہت اہم ہے۔

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Math Physics Chemistry Biology QUESTION #7748

Question 9659

Malpighian tubules are excretory structures found in which organism?

Earthworm
Grasshopper✔️
Leech
Slug

Correct Answer Logic:

Malpighian tubules are the excretory organs in insects like grasshoppers. Earthworm has nephridia; leech has nephridia; slug (mollusk) has a kidney-like organ.

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MBBS QUESTION #10347

Question 9660

A child with von Gierke disease (glycogen storage disease type I) has a deficiency of glucose-6-phosphatase. This enzyme deficiency produces severe fasting hypoglycemia because:

Both glycogenolysis and gluconeogenesis generate glucose-6-phosphate, but without this enzyme, glucose-6-phosphate cannot be dephosphorylated to free glucose for release from the liver into the bloodstream✔️
Glycogen cannot be synthesized under any circumstance
Cellular glucose uptake is entirely blocked without this enzyme
This enzyme functions only in the branching of glycogen, unrelated to blood glucose release

Correct Answer Logic:

Glucose-6-phosphatase, found in liver and kidney, catalyzes the final common step required to release free glucose into the blood from either glycogenolysis or gluconeogenesis; its absence traps glucose intracellularly as glucose-6-phosphate, producing severe fasting hypoglycemia along with lactic acidosis, hyperuricemia, and hyperlipidemia from shunting of accumulated glucose-6-phosphate into alternate pathways.

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