Carbon dioxide was discovered by_______...? Mcqs

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Carbon dioxide was discovered by_______...?

(A) Niels Bohr
(B) Amedeo Avogadro

(C) Joseph Black
(D) None of Above

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Rapid back and forth movement of an object is known as...?

(A) Rotation
(B) Revolution

(C) Vibration
(D) Translation

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The atomic mass of an element expressed in gram is ______...?

(A) Gram molecular mass
(B) Gram atomic mass

(C) Gram formula mass
(D) Mole

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____________ have no charge...?

(A) Neutrons
(B) Protons

(C) Electrons
(D) None of These

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A man can survive without food for at least...?

(A) One month
(B) Two month

(C) Three month
(D) Four month

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The process of separation of an insoluble solid from a liquid by passing it through filter paper is called...?

(A) Filtration
(B) Decantation

(C) Sedimentation
(D) Centrifugation

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When an object is placed far away from the concave mirror its image will be...?

(A) Real
(B) Inverted

(C) Smaller in size than the object
(D) All of these

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Speed of any object can be changed by...?

(A) Time
(B) Force

(C) Distance
(D) Mass

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The earth rotates on its axis. It completes one rotation in...?

(A) 36 hours
(B) 24 hours

(C) 12 hours
(D) 48 hours

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Which is the most electro-negative element among the following _________...?

(A) Fluorine
(B) Bromine

(C) Sodium
(D) Oxygen

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