The main constituent of Pearls are: ______________...? Mcqs

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The main constituent of Pearls are: ______________...?

(A) Calcium oxide &Ammonium Chloride
(B) Calcium Carbonate &Megnesium Carbonate

(C) Aragonite & Conchiolin
(D) None of these

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Approximate age of moon is _________...?

(A) 4.51 billion years
(B) 4.55 billion years

(C) 4.53 billion years
(D) 4.57 billion years

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The part of an eye acting as a film of camera is _____...?

(A) Retina
(B) Iris

(C) Lens
(D) Cornea

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Which of the following terms is used for species evolving from the same ancestor to different ecological niches...?

(A) Convergent evolution
(B) Divergent evolution

(C) Adaptive radiation
(D) Coevolution

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Which of the following is cold current ...?

(A) Gulf Stream
(B) Brazil

(C) Benguela
(D) Kuroshio

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Which of the following is not a region of the spinal cord ...?

(A) Thoracic
(B) Lumber

(C) Pelvic
(D) All are lying in spinal cord region

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In the wild primary diet of Pandas is _______...?

(A) [\"Bamboos\",\"Fruits\",\"Insects\",\"Small Birds\"]
(B) empty

(C) empty
(D) empty

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LED stands for _____...?

(A) Light Emitting Diode
(B) Laser Emitting Device

(C) Low Energy Device
(D) Liquid Emitting Display

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The basic physical and functional unit of heredity is called _____...?

(A) Chromosome
(B) Gene

(C) Cell
(D) None of these

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The capacitance of capacitors increases when they connected in ____...?

(A) Parallel
(B) Series

(C) Both A and B
(D) None

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