The sum of protons and neutrons in the nucleus of an atom is known as ____...? Mcqs

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The sum of protons and neutrons in the nucleus of an atom is known as ____...?

(A) Atomic Mass
(B) Mass Number

(C) Atomic Number
(D) Valance Number

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De Broglie extend the wave particle duality to electron in ______...?

(A) 1920
(B) 1922

(C) 1923
(D) 1925

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Sound travels fastest in _______...?

(A) Air
(B) Water

(C) Diamond
(D) Steel

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The element used in lead pencils is__________...?

(A) Zinc
(B) Lead

(C) Carbon
(D) Tin

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Linear thermal expansion of a solid depend upon ____...?

(A) Increasing in temperature
(B) Original length

(C) Properties of material
(D) All of these

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What is the harm from the depletion of Earth's Ozone Layer...?

(A) The average operation of the Earth's surface will increase gradually
(B) The oxygen content of the atmosphere will decrease

(C) Increased amount of UV rays will reach Earth's surface
(D) Sea levels will rise as the glaciers' caps will gradually melt

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Circadian Rhythm refers to _____________...?

(A) Planetary movements
(B) Formation of galaxies

(C) Human body cycles
(D) Calisthenics

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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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Insulin drug was discovered by____________...?

(A) Charles Herbert Best
(B) Prof John James Rickard Macleod

(C) Sir Frederick Grant Banting
(D) Leonard Thompson

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The Shortest air route from Moscow to San Francisco is...?

(A) Over the South Pole
(B) Over the North Pole

(C) Over the Atlantic Ocean
(D) None of the above

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