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
The time required for half of the __________ of a radioactive isotope to decay is called its half life.
A Nuclei
B Electrons
C Protons
D Neutrons
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
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
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
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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