. WHICH OF THE FOLLOWING IS NOT TRUE ABOUT CARBON-14

Question

Câu 44:. Which of the following is NOT true about carbon-14?A.It and nitrogen always exist in equal amounts in any substance.B.Its half-life is more than 5,000 years.C.It can decay into nitrogen-14. D. It is radioactive.

Accepted Answer

1 A 11 C 21 C 31 B 41 B 2 A 12 D 22 C 32 A 42 C 3 B 13 A 23 D 33 B 43 B 4 X 14 A 24 C 34 D 44 A 5 B 15 C 25 D 35 D 45 A 6 D 16 C 26 A 36 B 46 C 7 B 17 D 27 C 37 A 47 C 8 A 18 D 28 D 38 B 48 D 9 B 19 A 29 D 39 B 49 D 10 A 20 C 30 B 40 A 50 A

. WHICH OF THE FOLLOWING IS NOT TRUE ABOUT CARBON-14

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