What is the name of that system, which uses radioactivity to decide the period of materials of-pre-historic period ...? Mcqs

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What is the name of that system, which uses radioactivity to decide the period of materials of-pre-historic period ...?

(A) Radium dating
(B) Uranium dating

(C) Carbon dating
(D) Deuterium dating

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The process which is essential for continuing and survival of species is _____...?

(A) Digestion
(B) Respiration

(C) Reproduction
(D) Excretion

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Deficiency of Vitamin-A results in __________...?

(A) Night blindness
(B) rickets

(C) scurvy
(D) hair fall

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Strength of intermolecular forces from ionic or covalent bond is _______...?

(A) Weaker
(B) Stronger

(C) Equal
(D) None of above

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The outermost layer of the Earth is called ____________...?

(A) Crust
(B) Mental

(C) Core
(D) None of these

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Which of the following cutting conditions greatly affects the tool wear...?

(A) Cutting speed
(B) Feed

(C) Depth of cut
(D) None of the above

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More than 50% of the Earth’s crust consists of ______ plains....?

(A) Abyssal
(B) Indus

(C) Low land
(D) None of these

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The splitting of a heavy nucleus into smaller nuclei is called...?

(A) Fusion
(B) Fission

(C) Half-life
(D) Gamma decay

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Chromosomes consist of two genetically identical copies of thread called...?

(A) Chromonema
(B) Chromosomes

(C) Chromatids
(D) Chromatin

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How many chambers are in the human heart ...?

(A) 02
(B) 03

(C) 04
(D) 05

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