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Question 3827

Which of the following is a part of Eastern coast?

ACoromandel coast

BKonkan coast

CMalabar coast

DGujrat coast

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A. Coromandel coastExplanation not yet available.

Question 3826

The Deccan trap was formed by the:

ADharwar Vulcanicity

BMesozoic Vulcanicity

CCretaceous Vulcanicity

DPaleozoic Vulcanicity

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C. Cretaceous VulcanicityExplanation not yet available.

Question 3825

Which one of the following is the wettest place in India?

AUdhagamandalam

BMahabaleshwar

CCherrapunji

DMawsynram

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D. MawsynramExplanation not yet available.

Question 3824

The retreating Monsoon gives rainfall to:

AGujarat

BGoa

CTamilnadu

DMaharashtra

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C. TamilnaduExplanation not yet available.

Question 3823

The element used for vulcanizing rubber is:

Asulphur

Bbromine

Csilicon

Dphosphorus

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A. sulphurExplanation: Sulphur is used in the process of vulcanization of rubber. During vulcanization, sulphur forms cross-links between the rubber molecules, improving elasticity, strength, and resistance to heat and wear. This makes natural rubber more durable and suitable for industrial use.

Question 3822

Lens is made up of:

Apyrex glass

Bflint glass

Cordinary glass

Dcobalt glass

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B. flint glassExplanation: A lens is generally made of flint glass, which contains lead oxide. Flint glass has a higher refractive index than ordinary glass, allowing it to bend light more effectively. This property makes it ideal for manufacturing optical instruments such as lenses and prisms.

Question 3821

The phenomenon of light associated with the appearance of the blue Colour of the sky is:

Ainterference

Breflection

Crefraction

Dscattering

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D. scatteringExplanation: The blue colour of the sky is due to the scattering of sunlight by molecules and small particles in the Earth's atmosphere. Shorter wavelengths of light (blue and violet) are scattered more than longer wavelengths (red and yellow). Since our eyes are more sensitive to blue light, the sky appears blue.

Question 3820

'Mirage' is an example of:

Arefraction of light only

Btotal internal reflection of light only

Crefraction and total internal reflection of light

Ddispersion of light only

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C. refraction and total internal reflection of lightExplanation: A mirage is an optical illusion caused by both refraction and total internal reflection of light. It occurs when light rays bend due to temperature variations in air layers near the ground, creating the illusion of water or a reflected image on hot surfaces like roads or deserts.

Question 3819

Which part is modified as the tusk of elephant?

Acanine

Bpremolar

Csecond incisor

Dmolar

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C. second incisorExplanation: The tusks of elephants are actually modified second upper incisors. They are made primarily of dentine, commonly known as ivory, and covered by a thin layer of enamel at the tip (which wears off with time). Tusks grow continuously throughout the elephant’s life and are used for digging, lifting objects, stripping bark, defense, and dominance displays. Note: Both male and female African elephants have tusks, whereas in Asian elephants, tusks are generally present only in males. Composition: Tusks are composed of dentine (ivory) with fine concentric growth lines, and they grow from sockets in the skull.

Question 3818

Which amongst the following is the largest mammal?

Aelephant

Bwhale

Cdinosaur

Drhinoceros

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B. whaleExplanation: The blue whale (Balaenoptera musculus) holds the record as the largest mammal and the largest living organism on Earth. Adult blue whales can reach lengths of up to 30 meters (98 feet) and weigh over 180 tons. Despite their size, they feed mainly on small shrimp-like creatures called krill, filtering them through their baleen plates. Whales are warm-blooded, breathe air through blowholes, and give birth to live young — all key mammalian traits. Comparison: Blue whale (largest mammal): up to 30 m long, ~180 tons African elephant (largest land mammal): up to 4 m tall, ~6 tons Rhinoceros: up to 2 m tall, ~2 tons

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Explore the question bank

Which of the following is a part of Eastern coast?

The Deccan trap was formed by the:

Which one of the following is the wettest place in India?

The retreating Monsoon gives rainfall to:

The element used for vulcanizing rubber is:

Lens is made up of:

The phenomenon of light associated with the appearance of the blue Colour of the sky is:

'Mirage' is an example of:

Which part is modified as the tusk of elephant?

Which amongst the following is the largest mammal?

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