Who discovered that the earth was not the center of the universe...? Mcqs

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Who discovered that the earth was not the center of the universe...?

(A) Aristotle
(B) Nicolaus Copernicus

(C) Sir Isac Newton
(D) None

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What is the distance of the star Proxima Centauri from the planet Earth ________...?

(A) 4.2 light years
(B) 3.2 light years

(C) 2.4 light years
(D) 1.5 light years

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The magnitude of force between two unit positive charges when the distance between them is 1m would be...?

(A) 0N
(B) 1N

(C) 2N
(D) Columbus Constant

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Which of the following use movable pulleys...?

(A) Water wells
(B) Flags

(C) Bicycles
(D) Cranes

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Inhaled air passes through which of the following in the last...?

(A) Bronchiole
(B) Larynx

(C) Pharynx
(D) Trachea

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The moon rotates on its axis in how many days...?

(A) 14.8 days
(B) 17.5 days

(C) 29.7 days
(D) 27.3 days

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The day and night are formed due to 'Earth' rotation on its own axis from...?

(A) North to South
(B) South to North

(C) East to West
(D) West to East

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For glavinizing of iron which of the following metals is used ...?

(A) Aluminimum
(B) Copper

(C) Zinc
(D) Lead

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Permanent hardness of water may be removed by the addition of___________...?

(A) Sodium Carbonate
(B) Alum

(C) Potassium Permanganate
(D) Lime

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Equation stating that two ratios are equal _____...?

(A) Ratio
(B) Proportion

(C) Guess
(D) Senses

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