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प्रश्न
State any two precautions to be taken while handling radioactive substances.
Give two important precautions that should be taken while handling radioactive materials.
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उत्तर
The two safety precautions to be taken while handling radioactive substances are (any two):
- Radioactive substances should be kept in thick lead containers with a very narrow opening so as to restrict the radiations coming out from other directions.
- Radioactive materials should be handled with long lead tongs.
- People working with radioactive substances should put on special lead-lined aprons and lead gloves.
संबंधित प्रश्न
What is meant by radioactivity?
What do you mean by Atomic mass
Draw a diagram of a simple atom showing the nucleus and electrons. In this atom:
(a) What type of charge will there be on the nucleus?
(b) What is the value of this charge?
A nucleus of an element X which has the symbol `""_84^202` X emits an alpha particle and then a beta particle. The final nucleus is `""_"b"^"a"` Y Find a and b.
A radioactive substance is oxidized. What changes would you expect to take place in the nature of radioactivity? Explain your answer.
What are the types of emission?
Name a common device where a hot cathode ray tube is used.
Mention four properties of Becquerel rays.
A radioactive material decays by simultaneous emissions of two particles with half-lives of 1400 years and 700 years respectively. What will be the time after which one-third of the material remains? (Take In3 = 1.1)
Complete the following radioactive reaction:
\[\ce{^-_-X -> ^-_-Y + ^4_2He -> ^234_91Z + ^0_-1e}\]
