In which layer of atmosphere does commercial aircrafts usually fly...? Mcqs

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In which layer of atmosphere does commercial aircrafts usually fly...?

(A) Stratosphere
(B) Troposphere

(C) Mesosphere
(D) Thermosphere

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A radioactive element emits a particle from the nucleus of one of its atoms. The particle comprises two protons and two neutrons. The name of this process is called...?

(A) α-emission
(B) β-emission

(C) γ-emission
(D) Nuclear fission

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What’s the Strongest Muscle in the Human Body based on its weight...?

(A) Hands
(B) Masseter

(C) Neck
(D) Legs

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The two elements that are frequently used for making transistors are :...?

(A) Boron and aluminium
(B) Silicon and Germanium

(C) Iridium and Tungston
(D) None of these

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GPS (Global Positioning System) is used for _____...?

(A) Space exploration
(B) Mapping

(C) Identify location of objects on Earth
(D) Provide weather forecasting

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Work done per unit time is called ______...?

(A) Efficiency
(B) Energy

(C) Power
(D) Force

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Birds exhibits which of the following traits...?

(A) Lay eggs
(B) Warm-blooded

(C) Beak/bill & feathers
(D) Tail, two legs & wings

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Which gas is produced when trees and fossil fuels are burnt...?

(A) Carbon monoxide
(B) Carbon dioxide

(C) Nitrogen oxide
(D) Oxygen

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A colour blind person cannot see ______...?

(A) Anything
(B) Red

(C) White
(D) Black

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What is the scientific name of flying fish ...?

(A) Exocoetidae
(B) Anoplopoma fimbria

(C) Orthopsetta sordida
(D) Xiphias gladius

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