‘Black holes’ refers to_______________...? Mcqs

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‘Black holes’ refers to_______________...?

(A) Holes occurring in heavenly bodies
(B) Bright spots on the sun

(C) Collapsing object of high density
(D) Collapsing object of low density

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Sum of all ecosystems is classified as___________...?

(A) Aero sphere
(B) Ionosphere

(C) Biosphere
(D) Ozonosphere

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All of the following statements are incorrect except:...?

(A) Precision and accuracy should go side by side in a scientific work
(B) Scientific work must be precise, accuracy is not essential

(C) Scientific work must be accurate, precision is not essential
(D) Calculations must be made before any experiment

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Pumping of blood by the rhythmic pulsation of heart throughout the body is called...?

(A) Blood pressure
(B) Circulation

(C) Pulse
(D) Heart beat

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Which are called body building foods...?

(A) Carbohydrate
(B) Protein

(C) Vitamin
(D) Mineral

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The container use to grow bacteria on large scale are called...?

(A) Chillers
(B) Sterilizers

(C) Fermenters
(D) Ferments

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The brain of human adult weighs about_________...?

(A) 1200 – 1300 gm
(B) 1600 – 2000 gm

(C) 500 – 800 gm
(D) 100 – 200 gm

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Barcode reader is a device ____...?

(A) Input
(B) Output

(C) Display
(D) Storage

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Bleaching action of chlorine is by________...?

(A) Oxidation
(B) Reduction

(C) Decomposition
(D) Hydrolysis

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Earth revolves around the sun from...?

(A) East to West
(B) West to East

(C) South to North
(D) North to South

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