Light Emitting Diode (LED) is a ___ semiconductor device ....? Mcqs

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Light Emitting Diode (LED) is a ___ semiconductor device ....?

(A) 3 lead
(B) 4 lead

(C) 7 lead
(D) 2 lead

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Coal, gas and oil are all examples of _____...?

(A) Tidal energy
(B) Nuclear energy

(C) Fossil fuel energy
(D) Biomass energy

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What inspired reflecting road lights to be invented...?

(A) Car door reflecting mirrors
(B) The light a cat’s eyes gave off on a fence

(C) Sun light on steel posts on road sides
(D) The sun light on the windshield

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Which of the following vitamin is known as Pyridoxine...?

(A) Vitamin B-1
(B) Vitamin B-2

(C) Vitamin B-6
(D) Vitamin B-12

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A canyon is a large form of ________...?

(A) Dry valley
(B) Gorge

(C) Pediment
(D) Badiand

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All living organisms are classified into _______ kingdoms under the system proposed by Whittaker (1969)....?

(A) 5
(B) 6

(C) 7
(D) 8

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Entomology Is the Study of___________...?

(A) worms
(B) insects

(C) Animals
(D) All of these

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How is ammonia synthesized...?

(A) Herber process
(B) Regrigration process

(C) Contact process
(D) All of these

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What occurs in metaphase of mitosis...?

(A) Chromosome line up on the equator of the cell
(B) Chromatids reach the poles of the spindle

(C) Chromatids separate and move to opposite poles
(D) Chromosomes start to coil up and become visible

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One of the following is a water soluble vitamin...?

(A) Vitamin A
(B) Vitamin D

(C) Vitamin K
(D) None

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