Related Questions

Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.
A Atoms
B Neutrons
C Nucleons
D Electrons
Half life of a radioactive isotope corresponds to the time required for half of the following to decay
A Electrons
B Protons
C Neutrons
D Atom
A radioactive isotope undergoes decay with respect to time following __________ law.
A logarithmic
B exponential
C inverse square
D linear
The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half life period of a radioactive substance is one month, then
A $${\frac{3}{4}^{{\text{th}}}}$$ of it will disintegrate in two months
B It will completely disintegrate in two months
C It will completely disintegrate in four months
D $${\frac{l}{8}^{{\text{th}}}}$$ of it will remain intact at the end of four months
240 radioactive grams of goo loses half its radioactivity every 10 days. How many grams of radioactive goo is left in 40 days?
A 120
B 60
C 15
D none
Radioactive Isotope
A Helps in bone scan
B Capable to emit radiation
C Cannot convert to stable isotope
D Safe in pregnancy
E Not suitable for sterilization of medical instruments
The radioactive isotope of hydrogen is
A deuterium
B tritium
C protium
D none of these
Which one is the radioactive isotope of hydrogen?
A Deuterium
B Ortho-hydrogen
C Tritium
D None of these
একখন্ড রেডনের 70% ক্ষয় হতে কত সময় লাগবে? রেডনের অর্ধায়ু 3.85 দিন। (How much time is required to decay 70% of a piece of radon? Half life of radon is 3.85 days.)
A 5.06 days
B 4.69 days
C 4.5 days
D 7.66 days
E 6.69 days
ট্রিটিয়ামের অর্ধ-জীবন 12.5 বছর। একখণ্ড ট্রিটিয়ামের  78 অংশ ক্ষয় হতে কত সময় লাগবে? (The half life of Tritium is 12.5 years. To decay 78 parts of a piece of Tritium how much time is required?)
A 12.5 years
B 25 years
C 37.5 years
D 50 years

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