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Maths QUESTION #4538

Question 10701

What is $(\sqrt{a})^2$ for $a > 0$?

$a$✔️
$\sqrt{a}$
$a^2$
$2a$

Correct Answer Logic:

$(\sqrt{a})^2 = a$ for any positive $a$. The square and square root cancel each other.

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Biology Zoology Botany QUESTION #10776

Question 10702

Glycolysis is the metabolic pathway that converts:

Glucose into pyruvate✔️
Glucose into phosphoenolpyruvate
Fructose into pyruvate
Fructose into phosphoenolpyruvate

Correct Answer Logic:

Glycolysis (Greek: 'glucose splitting') is a 10-step metabolic pathway in the cytoplasm that converts one molecule of glucose ($\text{C}_6\text{H}_{12}\text{O}_6$) into two molecules of pyruvate ($\text{C}_3\text{H}_4\text{O}_3$), with a net yield of 2 ATP and 2 NADH. Phosphoenolpyruvate (PEP) is a penultimate intermediate, not the final product. Fructose can enter glycolysis after conversion but is not the direct substrate.

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Chemistry QUESTION #1099

Question 10703

Match List I (Vitamin) with List II (Deficiency disease): A. Vitamin B$_{12}$ B. Vitamin D C. Vitamin B$_2$ D. Vitamin B$_6$; with I. Cheilosis II. Convulsions III. Rickets IV. Pernicious anaemia

A-II, B-III, C-I, D-IV
A-IV, B-III, C-II, D-I
A-I, B-III, C-II, D-IV
A-IV, B-III, C-I, D-II✔️

Correct Answer Logic:

Vitamin B$_{12}$ deficiency → Pernicious anaemia (IV). Vitamin D deficiency → Rickets (III). Vitamin B$_2$ (riboflavin) deficiency → Cheilosis (cracking of lips) (I). Vitamin B$_6$ (pyridoxine) deficiency → Convulsions (II). Matching: A-IV, B-III, C-I, D-II.

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Math Physics Chemistry Biology QUESTION #809

Question 10704

Which is a synthetic polymer?

Polystyrene
Polyethylene
PVC✔️
None

Correct Answer Logic:

All three — polystyrene, polyethylene, and PVC — are synthetic polymers. However, if only one must be chosen, PVC (polyvinyl chloride) is the most distinctly synthetic and industrially significant; the paper marks 'None' suggesting all three are correct but none alone fully answers.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #2994

Question 10705

The primary difference between a Syrup and an Elixir is:

Syrups are always alcoholic
Elixirs are less sweet and less viscous than syrups✔️
Syrups contain no water
Elixirs are only for external use

Correct Answer Logic:

Elixirs contain alcohol for solubility and are typically less viscous than sucrose-heavy syrups.

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Dairy Food Science and Technology QUESTION #5907

Question 10706

The purpose of the 'holding tube' in an HTST pasteurizer is:

It pre-heats milk before the heat exchanger; time $= V/Q$ using fastest particle velocity
It maintains milk at $\geq 72^{\circ}\text{C}$ for the required minimum time ($\geq 15$ s); minimum length $= 2 \bar{v} \times 15\;\text{s}$, using the fastest particle velocity as the worst case✔️
It holds milk at $4^{\circ}\text{C}$ after cooling to prevent recontamination
It mixes raw and pasteurized milk for energy recovery

Correct Answer Logic:

The holding tube ensures EVERY particle receives the minimum heat treatment ($72^{\circ}\text{C}$ for $\geq 15$ s for HTST). The critical design parameter uses the FASTEST-moving particle ($\approx 2\times$ mean velocity in turbulent flow) as the worst case: minimum length $= 2\bar{v} \times 15\;\text{s}$.

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MCQs Section QUESTION #5195

Question 10707

تلخابۂ شیریں کے شاعر کا نام بتائیں؟

اختر شیرانی✔️
حفیظ جالندھری
حسرت موہانی
اصغر گونڈوی

Correct Answer Logic:

تلخابۂ شیریں اختر شیرانی کا شعری مجموعہ ہے جو رومانوی شاعری کے لیے مشہور ہے۔

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General Knowledge QUESTION #8620

Question 10708

Deficiency of which vitamin causes scurvy in humans?

Vitamin A
Vitamin B
Vitamin C✔️
Vitamin D

Correct Answer Logic:

Vitamin C deficiency leads to scurvy.

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Aptitude QUESTION #10926

Question 10709

The famous Lotus Temple in New Delhi belongs to which religion and was designed by which architect?

Islam; Fariborz Sahba
Bahá'í Faith; Fariborz Sahba✔️
Hinduism; Charles Correa
Buddhism; Balkrishna Doshi

Correct Answer Logic:

The Lotus Temple (Bahai House of Worship), New Delhi:

Religion: Bahá'í Faith — open to all religions for worship.
Architect: Fariborz Sahba (Iranian-Canadian architect).
Completed: 1986.
Form: 27 free-standing marble-clad petals arranged in clusters of three to form nine sides.
Won numerous architectural awards including the Globus Prize.

This is a landmark example of modern religious architecture in India.

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Verbal Reasoning QUESTION #8170

Question 10710

If $n = 2^3$, what is the value of $n^n$?

$2^{6}$
$2^{11}$
$2^{18}$
$2^{24}$✔️

Correct Answer Logic:

$n = 2^3 = 8$.

$n^n = 8^8 = (2^3)^8 = 2^{3 \times 8} = 2^{24}$.

Answer: $\mathbf{2^{24}}$.

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Political Science QUESTION #6693

Question 10711

The Objective Resolution was passed in Pakistan in:

1947
1948
1949✔️
None of these

Correct Answer Logic:

The Objective Resolution, the cornerstone of Pakistan's constitutional history, was passed on March 12, 1949.

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Dairy Food Science and Technology QUESTION #5974

Question 10712

The $B^*$ value concept in UHT processing represents:

The biological value of milk proteins after UHT treatment
$B^* = \int_0^t 10^{(T-135)/10.5}\,dt$; a measure of sterilization efficacy ($B^* \geq 1$ means sufficient sterilization, achieving $9$-log reduction of $C.\;botulinum$), balanced against chemical damage ($C^* < 1$ means $<3\%$ nutrient loss)✔️
Brix measurement of dissolved solids
The browning index based on Maillard reaction products

Correct Answer Logic:

In UHT optimization, $B^*$ and $C^*$ values balance sterilization efficacy vs chemical damage. $B^* \geq 1$ = sufficient sterilization ($9$-log reduction of $C.\;botulinum$). $C^* < 1$ = $<3\%$ nutrient loss. High-temperature, short-time UHT maximizes the $B^*/C^*$ ratio: better sterilization with less chemical damage.

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Psychology QUESTION #9864

Question 10713

To mark the onset and termination of adolescence:

Physiological measures are usually used for both boys and girls✔️
Physiological measures are usually used for girls but not for boys
Physiological measures are usually used for onset but not for the end
Psychological measurements are usually used for both boys and girls

Correct Answer Logic:

The beginning of adolescence is marked by physiological measures (menarche for girls; testicular development and voice changes for boys) for both sexes. The end of adolescence is less clearly marked physiologically.

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General Knowledge QUESTION #11569

Question 10714

What does DSL stand for in telecommunications?

Disc Super Line
Digital Subscriber Line✔️
Digital Super Line
Disc Subscriber Line

Correct Answer Logic:

DSL (Digital Subscriber Line) transmits digital data over traditional copper telephone lines, providing high-speed internet simultaneously with telephone service. Types: ADSL (faster download than upload), VDSL (very high speed), SDSL (symmetric). DSL replaced dial-up modems as the dominant broadband technology.

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General Knowledge QUESTION #8808

Question 10715

Which country has the highest ratio of internet users per 1,000 people?

Sweden
USA
Iceland✔️
China

Correct Answer Logic:

Iceland has one of the highest internet penetration rates.

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Boilers Mechanical Engineering QUESTION #4056

Question 10716

'Corrosion' in a boiler can be categorized as:

External (from moisture/flue gases) and Internal (from water chemistry)✔️
Only external
Only internal
A sign of a good boiler

Correct Answer Logic:

Both sides of the metal must be protected.

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General Knowledge QUESTION #9012

Question 10717

'May Day' (May 1st) commemorates the labour protests of 1886 in which city?

Moscow
Tehran
Manchester
Chicago✔️

Correct Answer Logic:

The Haymarket affair in Chicago led to May Day.

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Reading and Writing (Module-1) QUESTION #10488

Question 10718

The ------- silence in the courtroom was finally broken by the judge's gavel, signaling that the ------- verdict was about to be read.

boisterous . . irrelevant
tense . . long-awaited✔️
casual . . forgotten
cheerful . . minor

Correct Answer Logic:

Suspenseful silence is 'tense,' anticipating the 'long-awaited' verdict.

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Chemistry QUESTION #1002

Question 10719

Statement (I): Nitrogen, sulphur, halogen and phosphorus present in an organic compound are detected by Lassaigne's Test. Statement (II): The elements present in the compound are converted from covalent form into ionic form by fusing the compound with Magnesium in Lassaigne's test.

Statement I is false but Statement II is true
Both Statement I and Statement II are true
Both Statement I and Statement II are false
Statement I is true but Statement II is false✔️

Correct Answer Logic:

Statement I is correct — N, S, halogens, and P are detected by Lassaigne's test. Statement II is false — the compound is fused with sodium (Na), not magnesium (Mg), to convert covalent bonds into ionic form (e.g., $\text{NaCN, Na}_2\text{S, NaX}$).

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3535

Question 10720

Which family does 'Opium' (Afeem) belong to?

Papaveraceae✔️
Solanaceae
Rubiaceae
Liliaceae

Correct Answer Logic:

Papaver somniferum is the Opium poppy.

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