Sum of all ecosystems is classified as___________...? Mcqs

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Sum of all ecosystems is classified as___________...?

(A) Aero sphere
(B) Ionosphere

(C) Biosphere
(D) Ozonosphere

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Sound travels in air at an average speed of nearly________ ...?

(A) 1257 miles per hour
(B) 755 miles per hour

(C) 330 miles per hour
(D) None of these

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Escape velocity depends on ________...?

(A) Mass of the object trying to escape
(B) Radius of the planet or celestial body

(C) Both mass and radius of the planet or celestial body
(D) The velocity of the rotating planet

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To which of the following chambers of the heart, is the aorta connected...?

(A) Left ventricle
(B) Right ventricle

(C) Right auricle
(D) Left auricle

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Which of the following is used as a lubricant...?

(A) Graphite
(B) Silica

(C) Iron oxide
(D) Diamond

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The kidney is enclosed in a membrane called...?

(A) Pericardium
(B) Peritoneum

(C) Pleural membrane
(D) Plumule

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Dr. James Watson discovered the structure of DNA in __________...?

(A) 1953
(B) 1955

(C) 1957
(D) 1857

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Which mineral is the present in liver, dark green vegetable, red meat, flour, egg yolk, dried fruit, nuts, dried beans, peas, raisins, poultry, fish etc...?

(A) Iron
(B) Copper

(C) Magnesium
(D) Sodium

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Which mineral is the present in whole wheat, bananas, peas, prunes, oysters, liver, kidney, grains and legumes...?

(A) Copper
(B) Magnesium

(C) Sodium
(D) Iron

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Name the famous book of Ibn-Sina in which he discussed human physiology and medicine ...?

(A) Al-Qanun
(B) Al-Masudi

(C) New Renaissance
(D) Tadhkira

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