Isotopes of an element are identical in ____...? Mcqs

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Isotopes of an element are identical in ____...?

(A) Mass number
(B) Electron number

(C) Valency
(D) Atomic number

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Main constituent in air is ___________...?

(A) Oxygen
(B) Nitrogen

(C) Hydrogen
(D) Helium

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which is the second brightest star in the Universe...?

(A) Betelgeuse
(B) Vega

(C) Canopus
(D) None of these

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The two elements that are frequently used for making transistors are :...?

(A) Boron and aluminium
(B) Silicon and Germanium

(C) Iridium and Tungston
(D) None of these

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You have discovered a new celestial body. It has a thick atmosphere and it produces powerful cosmic winds and, when observed, the clouds obscure the body. You have determined it is this type of star....?

(A) Wolf-Rayet star
(B) Red supergiant

(C) Stellar storm
(D) Pulsar

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An alloy is the homogeneous mixture of ______...?

(A) Two solid
(B) Two liquid

(C) Two gases
(D) Solid and liquid

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What is the major source of release of direct pollutants in air pollution...?

(A) Air
(B) Fuel

(C) Gas
(D) None

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Who gave the theory of Evolution By Natural Selection...?

(A) Edward Teller
(B) Charles Darwin

(C) Charlas Babbage
(D) Einstein

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The main factor for determining a region’s climate is ___________...?

(A) Latitude
(B) Temperature

(C) Longitude
(D) None of them

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How many grams in a pound...?

(A) 451
(B) 453

(C) 455
(D) 457

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