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Question 3122

In the context of BRICS nations, which nation does the alphabet S represent?

ASouth Korea

BSpain

CSouth Africa

DSaudi Arabia

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C. South AfricaExplanation not yet available.

Question 3121

Madhubani folk an is the traditional art of which state?

AMizoram

BBihar

CMadhya Pradesh

DOrissa

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B. BiharExplanation not yet available.

Question 3120

Which is the respiratory organ of fish?

AEars

BGills

CSkin

DLungs

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B. GillsExplanation: Fish respire through specialized organs called gills, located on either side of their head. Gills contain thin filaments with a large surface area and rich blood supply that allow exchange of gases. When water passes over the gill membranes, oxygen diffuses into the blood and carbon dioxide diffuses out. This process enables aquatic respiration and supports survival underwater.

Question 3119

Which of the following branch deals with the various principles that govern the relationship between organisms and their environment?

AHistology

BEcology

CEntomology

DAnthropology

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B. EcologyExplanation: Ecology is a branch of biology that deals with the relationships of living organisms with one another and with their physical surroundings. It examines how organisms adapt to their environment, how energy flows through ecosystems, and how matter cycles within the biosphere. The term “Ecology” was first coined by Ernst Haeckel in 1866.

Question 3118

In which state is the Bhimbetka caves which is famous for pre-historic rock paintings?

AMadhya Pradesh

BMaharashtra

CUttar Pradesh

DBihar

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A. Madhya PradeshExplanation not yet available.

Question 3117

The waves which can propagate even through the vacuum,are called __________.

AMechanical waves

BReverse waves

CInverted waves

DElectromagnetic waves

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D. Electromagnetic wavesExplanation: Electromagnetic waves can propagate even through a vacuum because they do not require any material medium for transmission. Examples include light waves, radio waves, X-rays, and microwaves. In contrast, mechanical waves like sound require a medium such as air, water, or solids to travel.

Question 3116

Satara got annexed to East India Company by applying which policy?

APrinciple of Adjudication

BPrinciple of Paramountcy

CDoctrine of Lapse

DDoctrine of Land

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C. Doctrine of LapseSatara was annexed to the East India Company in 1848 by applying the Doctrine of Lapse policy introduced by Lord Dalhousie. According to this doctrine, if a ruler died without a natural male heir, his kingdom would be annexed by the British. The annexation of Satara was the first major application of this policy.

Question 3115

The Yamuna river flows parallel to the _________.

AKrishna

BGanga

CKaveri

DBrahmaputra

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B. GangaExplanation not yet available.

Question 3114

Sound waves having frequency less than 20 Hz are called __________ waves.

AIntelligent

BInferior

CInfrasonic

DInstrumental

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C. InfrasonicExplanation: Sound waves with frequencies below 20 Hz are called infrasonic waves. These waves are inaudible to the human ear but can be produced by natural phenomena such as earthquakes, volcanic eruptions, and ocean waves.

Question 3113

The mixture of flammable gases (carbon monoxide and hydrogen) and nonflammable gases (nitrogen and carbon dioxide) is called by what name?

ALaser Star Gas

BBreathing Gas

CProducer Gas

DLaughing Gas

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C. Producer GasExplanation: Producer gas is a mixture of flammable gases such as carbon monoxide (CO) and hydrogen (H₂), along with nonflammable gases like nitrogen (N₂) and carbon dioxide (CO₂). It is produced by the partial combustion of carbon-containing fuels (like coal or coke) with air and steam, and is used as a fuel in industrial furnaces.

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Explore the question bank

In the context of BRICS nations, which nation does the alphabet S represent?

Madhubani folk an is the traditional art of which state?

Which is the respiratory organ of fish?

Which of the following branch deals with the various principles that govern the relationship between organisms and their environment?

In which state is the Bhimbetka caves which is famous for pre-historic rock paintings?

The waves which can propagate even through the vacuum,are called __________.

Satara got annexed to East India Company by applying which policy?

The Yamuna river flows parallel to the _________.

Sound waves having frequency less than 20 Hz are called __________ waves.

The mixture of flammable gases (carbon monoxide and hydrogen) and nonflammable gases (nitrogen and carbon dioxide) is called by what name?

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