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English Literature QUESTION #10703

Two words that have very closely related meanings are called:

Antonyms
Homonyms
Synonyms✔️
Hyponyms

Correct Answer Logic:

Synonyms are two or more words with the same or very closely related meanings. Examples: 'happy/glad/joyful,' 'begin/start/commence.' Antonyms are words with opposite meanings; homonyms are words that sound the same but have different meanings (e.g. bank); hyponyms are words that are specific members of a broader category (e.g. 'rose' is a hyponym of 'flower').

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Dairy Food Science and Technology QUESTION #5945

Question 7602

The 'proteolysis index' in cheese ripening is correctly defined as:

$\text{PI} = \dfrac{\text{Water-Soluble Nitrogen}}{\text{Total Nitrogen}} \times 100$, indicating extent of proteolysis✔️
The total amount of rennet added per vat
The percentage of casein converted to whey proteins
The $\text{pH}$ of the cheese after ripening

Correct Answer Logic:

The proteolysis index (PI) $= \dfrac{\text{WSN}}{\text{TN}} \times 100$. Young cheddar PI $\approx 10\text{–}15\%$; mature cheddar PI $\approx 25\text{–}35\%$. High PI correlates with softer texture and stronger flavor development.

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Physics QUESTION #406

Question 7603

Which device is the most efficient?

Nuclear reactor✔️
Storage battery
Silicon solar cell
Dry battery cell

Correct Answer Logic:

Nuclear reactors have highest efficiency among these

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Chemistry QUESTION #1097

Question 7604

Dalton's Atomic theory could NOT explain which of the following?

Law of multiple proportion
Law of gaseous volume✔️
Law of conservation of mass
Law of constant proportion

Correct Answer Logic:

Dalton's Atomic theory successfully explained: Law of conservation of mass, Law of constant proportion, and Law of multiple proportions. It could NOT explain Gay-Lussac's Law of Gaseous Volumes (Law of combining volumes) because Dalton's theory did not account for the concept of molecules vs atoms in gases.

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English QUESTION #2692

Question 7605

Correct the sentence: 'She is more taller than her sister.'

She is more tall.
She is taller than her sister.✔️
She is most tall.
She is as tall.

Correct Answer Logic:

Double comparatives (more + -er) are incorrect; 'taller' is sufficient.

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Bio-Technology QUESTION #10615

Question 7606

A biotransformation differs from a fermentation in that a biotransformation involves:

Production of biomass as the primary product using a carbon source
One or a few enzymatic conversion steps of a specific substrate to a structurally related product✔️
Complete mineralisation of organic compounds to CO₂ and H₂O
Genetic modification of microorganisms to produce recombinant proteins

Correct Answer Logic:

A biotransformation (bioconversion) uses living cells or isolated enzymes to perform one or a few specific chemical transformations on a substrate — producing a structurally modified product. The cell is used as a catalyst, not primarily for its biosynthetic capacity. Examples: steroid hydroxylation, chiral resolution, acrylamide production from acrylonitrile by nitrile hydratase. In contrast, fermentation refers broadly to microbial production processes, usually involving complex metabolic pathways.

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Math Physics Chemistry Biology QUESTION #729

Question 7607

One light year is equal to:

9 x 10^12 m
6 x 10^12 m
9.5 x 10^13 m✔️
None

Correct Answer Logic:

One light year is the distance light travels in one year = 9.461 x 10^15 m ≈ 9.5 x 10^15 m. The closest answer is 9.5 x 10^13 m (option C as given in paper).

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General Knowledge QUESTION #4760

Question 7608

Ringgit is the currency unit of which country?

Singapore
Philippines
Malaysia✔️
Indonesia

Correct Answer Logic:

The Malaysian Ringgit (MYR) is the official currency of Malaysia, introduced in 1967 when the country separated from the shared Malayan dollar.

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General Intelligence/Ability QUESTION #3975

Question 7609

An individual earns an annual income of $\$15,000$. After paying $15\%$ in federal taxes and then $10\%$ of the remaining balance in state taxes, how much income is left?

$\$12,750$✔️
$\$9,750$
$\$14,125$
$13,500$

Correct Answer Logic:

4

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Mathematics QUESTION #7479

Question 7610

Let $\vec{a} = 2\hat{i} + \lambda_1\hat{j} + 3\hat{k}$, $\vec{b} = 4\hat{i} + (3-\lambda_2)\hat{j} + 6\hat{k}$ and $\vec{c} = 3\hat{i} + 6\hat{j} + (\lambda_3-1)\hat{k}$ be three vectors such that $\vec{b} = 2\vec{a}$ and $\vec{a}$ is perpendicular to $\vec{c}$. Then a possible value of $(\lambda_1, \lambda_2, \lambda_3)$ is:

(1, 3, 1)
$(-\frac{1}{2}, 4, 0)$✔️
$(\frac{1}{2}, 4, -2)$
(1, 5, 1)

Correct Answer Logic:

From $\vec{b} = 2\vec{a}$: $4\hat{i}+(3-\lambda_2)\hat{j}+6\hat{k} = 4\hat{i}+2\lambda_1\hat{j}+6\hat{k}$. Comparing: $3-\lambda_2 = 2\lambda_1$, so $\lambda_2 = 3-2\lambda_1$. From $\vec{a} \perp \vec{c}$: $2(3) + \lambda_1(6) + 3(\lambda_3-1) = 0$, giving $6+6\lambda_1+3\lambda_3-3 = 0$, so $6\lambda_1+3\lambda_3 = -3$, thus $2\lambda_1+\lambda_3 = -1$. Testing option B: $\lambda_1 = -\frac{1}{2}$, $\lambda_2 = 4$, $\lambda_3 = 0$. Check: $\lambda_2 = 3-2(-\frac{1}{2}) = 3+1 = 4$ ✓. And $2(-\frac{1}{2})+0 = -1$ ✓.

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Math Physics Chemistry Biology QUESTION #7741

Question 7611

What surrounds the muscle fibre (muscle cell) in skeletal muscle?

Cytoplasm
Lacunae
Myofibrils
Sarcoplasm✔️

Correct Answer Logic:

The cytoplasm of a muscle cell is called sarcoplasm. It contains myofibrils, organelles, and glycogen stores. Lacunae are in bone/cartilage.

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Geography QUESTION #1246

Question 7612

Convection currents are found in:

Troposphere✔️
Stratosphere
Ionosphere
None of these

Correct Answer Logic:

Convection currents in the atmosphere occur primarily in the troposphere — the lowest layer of the atmosphere (0–12 km). The troposphere is heated from below by the Earth's surface, making it thermally unstable and prone to convective overturning (warm air rises, cool air sinks). The stratosphere is thermally stable (temperature increases with altitude), suppressing convection.

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Math Physics Chemistry Biology QUESTION #11276

Question 7613

A heterozygous tall plant (Tt) is crossed with a homozygous short plant (tt). What is the expected phenotypic ratio in the offspring?

All tall
All short
1 tall : 1 short✔️
3 tall : 1 short

Correct Answer Logic:

This is a test cross. The Tt parent produces T and t gametes (50% each), while the tt parent produces only t gametes. Offspring genotypes: 50% Tt (tall) and 50% tt (short). Phenotypic ratio = $1$ tall : $1$ short.

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Islamic Studies QUESTION #336

Question 7614

The name of Hazrat Zaid bin Haritha (RA) is mentioned in which Surah?

Al-Saff
Al-Ahzab✔️
Bani Israel
Yaseen

Correct Answer Logic:

He is the only Companion of the Prophet (ﷺ) mentioned by name in the Quran (Surah Al-Ahzab, Verse 37).

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MCQs Section QUESTION #4896

Question 7615

A firm that specializes in the analysis of handwriting claims _____ more than three hundred personality traits, including enthusiasm, imagination, and ambition.

from a one-page writing sample that it can assess
from a one-page writing sample it has the ability of assessing
the ability, from a one-page writing sample, of assessing
to be able, from a one-page writing sample, to assess✔️

Correct Answer Logic:

Claims to be able…to assess' is the proper idiomatic construction. Option A misplaces the modifier 'from a one-page writing sample' before the 'that' clause. Options B and C use non-idiomatic constructions. Option E would produce a dangling participial phrase.

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Bio-Technology QUESTION #10612

Question 7616

In the baculovirus expression vector system (BEVS), the foreign gene is placed under the control of the:

CMV immediate-early promoter
Polyhedrin or p10 promoter, which drive very high-level expression in infected insect cells✔️
T7 RNA polymerase promoter
GAL1 promoter activated by galactose

Correct Answer Logic:

The BEVS uses Autographa californica multiple nucleopolyhedrovirus (AcMNPV) to infect Spodoptera frugiperda (Sf9) or Trichoplusia ni (Hi5) insect cells. The foreign gene replaces the polyhedrin (polh) gene, which is non-essential for virus replication but is expressed at extremely high levels (up to 50% of total cell protein) late in infection. BEVS supports post-translational modifications including glycosylation and is used to produce vaccines, virus-like particles, and complex proteins.

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Islamic Studies QUESTION #7921

Question 7617

What is the backbone of economic system of Islam?

Zakat✔️
Tax
Jihad
Ushr

Correct Answer Logic:

Zakat is considered the backbone of the Islamic economic system. It is a mandatory 2.5% annual charity on savings, ensuring wealth circulation from rich to poor. Zakat purifies wealth, reduces inequality, and creates social welfare. Along with Ushr (agricultural tax), it forms the foundation of Islamic economic justice.

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Mathematics QUESTION #6006

Question 7618

Given $(2 + \sin x)\dfrac{dy}{dx} + (y+1)\cos x = 0$ with $y(0) = 1$, find the value of $y\!\left(\dfrac{\pi}{2}\right)$.

$\dfrac{1}{3}$✔️
$-\dfrac{2}{3}$
$-\dfrac{1}{3}$
$\dfrac{4}{3}$

Correct Answer Logic:

Separate variables: $\frac{dy}{y+1} = -\frac{\cos x}{2+\sin x}dx$

Integrate: $\ln|y+1| = -\ln|2+\sin x| + C$

So $(y+1)(2+\sin x) = K$

At $x=0, y=1$: $(1+1)(2+0) = K \Rightarrow K = 4$

Thus $y+1 = \frac{4}{2+\sin x}$, so $y = \frac{4}{2+\sin x} - 1$

At $x = \frac{\pi}{2}$: $y = \frac{4}{2+1} - 1 = \frac{4}{3} - 1 = \mathbf{\frac{1}{3}}$

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Boilers Mechanical Engineering QUESTION #2466

Question 7619

The addendum of a standard full-depth involute gear tooth in SI units (module $m$) equals:

$a = 1.25m$
$a = m$✔️
$a = 0.8m$
$a = 1.157m$

Correct Answer Logic:

For standard full-depth involute teeth (SI, 20° pressure angle): addendum $a=m$ (one module), minimum dedendum $b=1.25m$.

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Nursing QUESTION #9168

Question 7620

Which of the following is a notifiable disease in Pakistan that must be reported to health authorities?

Common cold
Influenza
Cholera✔️
Migraine

Correct Answer Logic:

Notifiable diseases are those legally required to be reported to public health authorities for surveillance and control. In Pakistan, under the Epidemic Diseases Act and the National Health Regulations, the following are notifiable:

Cholera
Plague
Yellow Fever
Typhoid
Viral Hemorrhagic Fevers (Dengue, Crimean-Congo)
Poliomyelitis
Measles
Meningitis
COVID-19 (added recently)

A Head Nurse in a community or hospital setting must ensure timely disease notification to prevent outbreaks and protect community health.

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