The fossil bone has a ¹⁴C:¹²C ratio, which is [1/16] of that in a living animal
The fossil bone has a ¹⁴C:¹²C ratio, which is [1/16] of that in a living animal bone. If the half-life…
7 years ago
Radioactivity
₉₂U²³⁴ has 92 protons and 238 nucleons. It decays by emitting an alpha particle
₉₂U²³⁴ has 92 protons and 238 nucleons. It decays by emitting an alpha particle and becomes Options (a) ₉₂U²³⁴ (b)…
7 years ago
A mixture consists of two radioactive materials A₁ and A₂ with half lives of 20s
A mixture consists of two radioactive materials A₁ and A₂ with half lives of 20s and 10s respectively. Initially the…
7 years ago
Consider two nuclei of the same radioactive nuclide. One of the nuclei was created
Consider two nuclei of the same radioactive nuclide. One of the nuclei was created in a supernova explosion 5 billion…
7 years ago
Curie is the unit of
Curie is the unit of Options (a) half life period (b) decay constant (c) radioactivity (d) nuclear force Correct Answer:…
7 years ago
The half life of radioactive isotope ‘X’ is 50 years. It decays to
The half life of radioactive isotope 'X' is 50 years. It decays to another element 'Y' which is stable. The…
7 years ago
A radioactive substance has a half-life of four months. Three-fourth of substance
A radioactive substance has a half-life of four months. Three-fourth of substance will decay in Options (a) 3 months (b)…
7 years ago
Two radioactive materials X₁ and X₂ have decay constants 5λ and λ respectively
Two radioactive materials X₁ and X₂ have decay constants 5λ and λ respectively. If initially they have the same number…
7 years ago
In a radioactive decay process, the negatively charged emitted β- particles are
In a radioactive decay process, the negatively charged emitted β- particles are Options (a) the electrons produced as a result…
7 years ago
The nuclei of which one of the following pairs of nuclei are isotones?
The nuclei of which one of the following pairs of nuclei are isotones? Options (a) ₃₄Se⁷⁴,₃₁Ga⁷¹ (b) ₃₈Sr⁸⁴,₃₈Sr⁸⁶ (c) ₄₂Mo⁹²,₄₀Zr⁹²…
7 years ago