More than 50% of the Earth’s crust consists of ______ plains....? Mcqs

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More than 50% of the Earth’s crust consists of ______ plains....?

(A) Abyssal
(B) Indus

(C) Low land
(D) None of these

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Water is heated in a kettlE. The inside water is heated by convection. A person sitting near the fire receives heat by ________...?

(A) Conduction
(B) Convection

(C) Radiation
(D) Reflection

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The moon’s surface has been explored by how many astronauts...?

(A) 10
(B) 11

(C) 12
(D) 13

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The source of the Sun’s energy is the process of ____________...?

(A) Photoelectric emission
(B) Nuclear fission

(C) Nuclear fusion
(D) Thermionic emission

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Blood is cleaned by __________...?

(A) Lungs
(B) Liver

(C) Heart
(D) Kidneys

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Which lenses are used by people having short-sightedness...?

(A) Convex
(B) Concave

(C) Concavo-convex
(D) Plain

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Permissible noise level at Residential area during night time is:...?

(A) 45 dB
(B) 55 dB

(C) 75 dB
(D) 80 dB

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The springs in brakes and clutches are used ______...?

(A) To restore original position
(B) To measure forces

(C) To absorb shocks
(D) To absorb strain energy

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Which is the biggest star in the Universe...?

(A) UY Scuti
(B) Rigel

(C) Canopus
(D) Arcturus

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Which is known as ‘Lifeblood of industries’...?

(A) Finance
(B) Transport

(C) logistic
(D) Supplies

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