The metal, which is a constituent of vitamin B12 is____________...? Mcqs

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The metal, which is a constituent of vitamin B12 is____________...?

(A) Iron
(B) Magnesium

(C) Zinc
(D) Cobalt

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Which of the following elements is not present abundantly in earth’s crust ...?

(A) Silicon
(B) Radium

(C) Aluminum
(D) Carbon

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Sound travels_______ in solid materials then liquid...?

(A) Constant
(B) Slowest

(C) Fastest
(D) None of these

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All matter is made of ___________...?

(A) Air
(B) Water

(C) Vibrations
(D) Atoms

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___________ begins at 690 to 1,000 km from the surface, and extends to roughly 10,000 km....?

(A) Troposphere
(B) Mesosphere

(C) Exosphere
(D) Stratosphere

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Mass spectrograph was Invented by...?

(A) Rutherford
(B) Chadwik

(C) F.W.Aston
(D) None of these

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The velocity of a wave is equal to ______...?

(A) Wavelength x Frequency
(B) Wavelength / Frequency

(C) Frequency / Wavelength
(D) Wavelength + Frequency

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Which of the following disease affects the skin ...?

(A) Rickets
(B) Osteoporosis

(C) Anemia
(D) Pellagra

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The amount of heat needed to convert a substance from liquid to gas is called...?

(A) Heat of vaporization
(B) Specific heat

(C) Latent heat of fusion
(D) All

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The properties used for heat...?

(A) Hot, Energy, Cold
(B) Color, Smell, Sound

(C) , Heavy, Light, Hard
(D) Circle, Square, Point

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