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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The chemical name of Laughing gas is___________...?

(A) Nitric oxide
(B) Nitrogen dioxide

(C) Nitrogen pentoxide
(D) Nitrous oxide

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When the wire is disconnected and the bulb is off, this is called...?

(A) Open Circuit
(B) Close Circuit

(C) Short Circuit
(D) Series Circuit

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Which animal has four hearts...?

(A) Squid
(B) Octopus

(C) Cuttlefish
(D) Hagfish

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The boiling point of water on a centigrade scale is...?

(A) 80°C
(B) 90°C

(C) 100°C
(D) 10°C

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Atomic power plant works on the principle of...?

(A) fission
(B) fusion

(C) thermal combustion
(D) combined effect of all the above three

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At higher altitude, the temperature and density of the air are _____...?

(A) Lower
(B) Higher

(C) Constant
(D) Unchanged

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Chili contain which vitamin...?

(A) Vitamin A
(B) Vitamin B

(C) Vitamin C
(D) None of these

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The orbit of the Earth is an elongated circle is called...?

(A) Ellipse
(B) Parabola

(C) Hyperbola
(D) Oval

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Rainbow is seen after rain because of hanging molecules of water which act as __________...?

(A) Lens
(B) Prism

(C) Mirror
(D) Slabs

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