Optic fibers are mainly used for which of the following:...? Mcqs

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Optic fibers are mainly used for which of the following:...?

(A) Communication
(B) Weaving

(C) Food indudtry
(D) None of these

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Pollutants that are introduced into the environment by human activity are called as ___________...?

(A) Qualitative pollutants
(B) Quantitative pollutants

(C) Anthropogenic pollutant
(D) All of Above

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Which cell component is a jelly-like substance that contains many chemicals and facilitates chemical reactions...?

(A) Nucleus
(B) Cell Wall

(C) Cytoplasm
(D) Cell Membrane

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Central Color of Rainbow is__________...?

(A) Blue
(B) Green

(C) Red
(D) Indigo

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Vertebrates animals that maintain a constant body temperature are called...?

(A) Cold-blooded
(B) Warm-blooded

(C) Both A and B
(D) None

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Carbon dioxide was discovered by_______...?

(A) Niels Bohr
(B) Amedeo Avogadro

(C) Joseph Black
(D) None of Above

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Ruby is an oxide of__________...?

(A) silver
(B) gold

(C) platinum
(D) aluminium oxide

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Chlorophyll contains _____metal....?

(A) Iron
(B) Calcium

(C) Magnesium
(D) Potassium

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What is unit of Pressure...?

(A) Barr
(B) Torr

(C) Pascal
(D) All of these

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A loudspeaker changes _________ energy into sound energy....?

(A) Chemical
(B) Electrical

(C) Light
(D) Kinetic

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