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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Mass spectrograph was Invented by...?

(A) Rutherford
(B) Chadwik

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

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An agreement between a measured value and the accepted true value...?

(A) Error
(B) Accuracy

(C) Precision
(D) All of these

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The color of a sedimentary rock is often mostly determined by___________...?

(A) Zinc
(B) Iron

(C) Calcium
(D) None of these

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There are three types of plate boundaries i.e Divergent, Convergent and____________...?

(A) Normal
(B) Transform

(C) Complex
(D) Plain

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Biome is community of _____...?

(A) Plants
(B) Animals

(C) Both A and B
(D) None of these

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In the Centigrade scale, the freezing point of water is _______ and the boiling point of water is ________...?

(A) 0°C, 50°C
(B) 10°C, 100°C

(C) 0°C, 100°C
(D) 5°C, 90°C

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Friction opposes motion between two bodies in contact because of ______...?

(A) Charges on bodies
(B) Weight of bodies

(C) Roughness of surfaces
(D) None of above

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A non-metal atom form anion by ______...?

(A) Loses of electrons
(B) Gain of electrons

(C) Loses of protons
(D) Gain of protons

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Which of the following is a Lewis base...?

(A) HNO3
(B) CN

(C) HCl
(D) AlCl3

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