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Maths QUESTION #2890

Question 4621

Complete the series: $5, 10, 20, 40, \dots$

50
60
80✔️
100

Correct Answer Logic:

Each term is multiplied by $2$. Next is $40 \times 2 = 80$.

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Boilers Mechanical Engineering QUESTION #3986

Question 4622

What is 'Water Hammer' in a steam line?

A tool used to fix pipes
A loud noise and vibration caused by steam hitting condensate water✔️
A type of pressure gauge
A method of cleaning tubes

Correct Answer Logic:

Rapidly moving steam can propel slugs of water against fittings, potentially causing pipe rupture.

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Tourism & Hospitality Management QUESTION #1613

Question 4623

The Tourism and Hospitality Laws course addresses 'the law of tort' as relevant to hospitality operations. Which of the following scenarios would most directly engage tort law in a hotel context?

A hotel failing to renew its business registration on time
A guest slipping on an unmarked wet floor in the hotel lobby and sustaining injury due to the hotel's negligence✔️
A chef preparing food that does not meet a guest's flavor preference
A hotel raising its room rates during peak season

Correct Answer Logic:

The Tourism and Hospitality Laws course covers torts — specifically negligence, trademark infringement, and fraud — in Module 2. A guest injured due to the hotel's failure to maintain safe premises (e.g., an unmarked wet floor) is a classic negligence tort scenario in which the hotel owes a duty of care and may be held liable for breach of that duty.

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Academic/Professional (Social Sciences) QUESTION #10124

Question 4624

A 'post-industrial society' is primarily characterized by an economy centered on:

Agriculture
Heavy manufacturing
Information, services, and knowledge✔️
Subsistence hunting

Correct Answer Logic:

Post-industrial societies shift emphasis toward information, services, and knowledge-based production.

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MBBS QUESTION #10280

Question 4625

A patient reports difficulty seeing in dim light (night blindness) while daytime vision remains normal. This is most consistent with a problem affecting which retinal pathway, often related to vitamin A deficiency?

Cone-mediated (photopic) vision
Rod-mediated (scotopic) vision✔️
Optic nerve conduction, affecting both rods and cones equally
The lens's accommodative mechanism

Correct Answer Logic:

Rods, which mediate vision in dim light (scotopic vision) and depend on the vitamin A derivative retinal for the visual pigment rhodopsin, are selectively affected in vitamin A deficiency and certain retinal dystrophies, producing isolated night blindness while cone-mediated (daytime, color) vision remains relatively preserved.

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Biology QUESTION #7285

Question 4626

The chief water-conducting elements of xylem in gymnosperms are:

Tracheids✔️
Vessels
Fibres
Transfusion tissue

Correct Answer Logic:

Tracheids are the primary water-conducting elements in gymnosperm xylem. Unlike angiosperms, most gymnosperms lack vessels (except Gnetum and Ephedra). Tracheids are elongated, dead cells with pitted walls that conduct water through pits. Transfusion tissue aids conduction in gymnosperm leaves; fibres provide support.

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Boilers Mechanical Engineering QUESTION #2467

Question 4627

The base circle diameter $d_b$ of a gear with pitch diameter $d$ and pressure angle $\phi$ is:

$d_b = d / \cos\phi$
$d_b = d \cdot \tan\phi$
$d_b = d \cdot \cos\phi$✔️
$d_b = d \cdot \sin\phi$

Correct Answer Logic:

The base circle radius is related to the pitch circle radius by $r_b = r\cos\phi$, hence $d_b = d\cos\phi$.

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General Knowledge QUESTION #11519

Question 4628

The standard layout of keys on standard computer keyboards is known as:

Home layout
QWERTY layout✔️
Basic layout
General layout

Correct Answer Logic:

The standard keyboard layout is called QWERTY, named after the first six letters in the top row. Designed by Christopher Sholes in 1873, QWERTY was originally arranged to prevent mechanical jamming on typewriters. Alternative layouts include Dvorak and Colemak.

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Dairy Food Science and Technology QUESTION #5928

Question 4629

Casein micelles in milk are stabilized against aggregation primarily by:

Van der Waals attraction forces
Steric stabilization by the $\kappa$-casein 'hairy layer' and electrostatic repulsion (negative surface charge, zeta potential $\approx -20\;\text{mV}$)✔️
Hydrophobic bonding to fat globule membranes
Disulfide bonds between $\beta$-casein molecules

Correct Answer Logic:

Casein micelle stability depends on: steric repulsion from the protruding GMP portion of $\kappa$-casein on the micelle surface; and electrostatic repulsion due to negative surface charge (zeta potential $\approx -20\;\text{mV}$ at milk $\text{pH}$). Removal of either causes aggregation.

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Electrical Engineering QUESTION #2173

Question 4630

A half-wave dipole antenna has $R_{rad} = 73\,\Omega$, $R_{loss} = 7\,\Omega$, and directivity $D = 1.64$. Its radiation efficiency and gain are:

$\eta = 91.25\%$, $G \approx 1.497\,(1.75\,\text{dBi})$✔️
$\eta = 80\%$, $G = 1.31$
$\eta = 100\%$, $G = 1.64$
$\eta = 50\%$, $G = 0.82$

Correct Answer Logic:

$\eta = \frac{73}{73+7} = 0.9125 = 91.25\%$. $G = \eta \cdot D = 0.9125 \times 1.64 \approx 1.497 \approx 1.75\,\text{dBi}$.

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General Intelligence/Ability QUESTION #3978

Question 4631

Determine which of the following mathematical expressions results in the largest value:

$4 \times \sqrt{4}$✔️
$4^2$
$4 \times 4 \times 4$
$\sqrt{4}$

Correct Answer Logic:

2

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Chemistry QUESTION #439

Question 4632

London forces are very significant in __________

Sulphur
Phosphorous
Argon✔️
Sugar

Correct Answer Logic:

London forces dominate in noble gases like Argon

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English QUESTION #8391

Question 4633

Exonerate is the opposite of:

forge
accuse✔️
acquit
reimburse

Correct Answer Logic:

Exonerate means to clear from blame; opposite is to accuse.

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English QUESTION #508

Question 4634

SAGACITY

Foolishness
Large City
Onions
Wisdom✔️

Correct Answer Logic:

Sagacity means wisdom and good judgment

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HR and Management QUESTION #6441

Question 4635

According to the text, ethics in HRM is described as:

Strict adherence to written company policies
The legal minimum standard of conduct
The bedrock of socially responsible behavior✔️
Optional guidelines for management discretion

Correct Answer Logic:

The text explicitly states that ethics is the bedrock of socially responsible behavior. While codes of ethics exist, managerial decisions related to HR are subject to judgment calls, and what is ethical or unethical is often open to debate except in blatant cases.

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Psychology QUESTION #9714

Question 4636

Which school of psychology focuses on the adaptive functions of mental processes and behavior, drawing on Charles Darwin's theory of evolution?

Structuralism
Functionalism✔️
Behaviorism
Gestalt psychology

Correct Answer Logic:

Functionalism, associated with William James, focuses on how mental processes help organisms adapt to their environment. Unlike Structuralism (which asked what the mind is made of), Functionalism asked what the mind does and why. It was directly influenced by Darwin's idea that mental traits, like physical traits, evolved because they served adaptive functions.

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MBBS QUESTION #10371

Question 4637

The polymerase chain reaction (PCR), used to exponentially amplify a specific target DNA sequence in vitro, consists of which three essential, repeated cyclic steps?

Denaturation (strand separation), annealing (primer binding), and extension (elongation)✔️
Transcription, translation, and replication
Ligation, restriction enzyme digestion, and gel electrophoresis
Centrifugation, filtration, and chemical precipitation

Correct Answer Logic:

Each PCR cycle involves heat denaturation of double-stranded DNA, annealing of short complementary primers to the target sequence at a lower temperature, and extension of new DNA strands by a heat-stable DNA polymerase (e.g., Taq polymerase) — repeated cycles exponentially amplify the target sequence, forming the basis of modern molecular diagnostics.

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Chemistry QUESTION #471

Question 4638

Acetic acid is called __________ acid.

Methanoic
Propanoic
Ethanoic✔️
Butanoic

Correct Answer Logic:

Acetic acid is ethanoic acid

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English QUESTION #2768

Question 4639

What does the idiom 'BITE THE BULLET' mean? (Note: An idiom is an expression whose meaning is different from the literal meaning of its words)

To eat something hard
To endure a difficult situation bravely✔️
To speak harshly to someone
To make a quick decision

Correct Answer Logic:

'Bite the bullet' is an idiom meaning to endure a painful or difficult situation with courage. It does not literally involve biting a bullet. Example: 'I didn't want to go to the dentist, but I bit the bullet and went.'

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Law QUESTION #9492

Question 4640

A mortgagee bank files a suit for sale of the mortgaged property. The bank is the plaintiff. It applies for a temporary injunction restraining the mortgagor B from creating any third-party interest in the property pending suit. B argues an injunction cannot be granted in favour of the plaintiff since the suit itself seeks sale of the property. Is B's argument sound?

No; a Court has power to grant interim injunctions to preserve the subject-matter of the suit and protect the plaintiff's interest pending final adjudication, regardless of the relief ultimately sought✔️
No; but the injunction requires the deposit of security by the plaintiff
Yes; interim injunctions are only for defendants
Yes; a plaintiff seeking sale cannot simultaneously obtain an injunction

Correct Answer Logic:

Under Order XXXIX CPC, a Court can grant a temporary injunction in any suit at any stage if the case falls within the prescribed conditions. The relief finally sought does not preclude interim relief. Preserving the mortgaged property from further encumbrance pending a suit for sale is a classic ground for interim injunction.

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