Which one of the following represents a chemical change_________...? Mcqs

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Which one of the following represents a chemical change_________...?

(A) Sublimation of iodine
(B) Heating a platinum wire in a Bunsen flame

(C) Heating of mercuric oxide powder
(D) Evaporation of alcohol

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The energy released during fission or fusion reaction is called...?

(A) Solar energy
(B) Geothermal energy

(C) Tidal energy
(D) Nuclear energy

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Sputnik-1 was the first manmade spacecraft, which was launched on October 4, 1957 by the ____...?

(A) Soviet Union
(B) United States of America

(C) China
(D) Great Britain

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Which of the following vitamin is known as Pantothenic acid...?

(A) vitamin B-1
(B) vitamin B-2

(C) vitamin B-3
(D) vitamin B-5

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BTU is a unit of________...?

(A) Force
(B) Magnetic flux

(C) Energy
(D) None of these

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Biopsy is done on tissues taken from__________...?

(A) Human body
(B) Animal body

(C) Living body
(D) Dead body

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The process of emission of electrons from the hot metal surfaces is called...?

(A) Plastic emission
(B) Thermionic emission

(C) Static emission
(D) Current emission

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In a process of cellular respiration 180 ATP molecules are produced, how many moles of glucose consume during this process...?

(A) 2
(B) 5

(C) 8
(D) 10

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How dark matter is detected...?

(A) Dark matter is detected through its absorption effects
(B) Dark matter is detected through its gravitational effects on visible matter

(C) Dark matter is detected through its absorption and gravitational effects
(D) Dark matter cannot be detected

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Natural Radioactivity was discovered by Becquerel in ____________...?

(A) 1766
(B) 1896

(C) 1935
(D) 2001

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