Tag: nuclear physics

Questions Related to nuclear physics

Which of the following element(s) is not essential for life to originate and flourish on a planet?

chemistry energy production hazards and safety measures of radiations harmful effects and safety precautions for radiations nuclear physics

  1. carbon

  2. hydrogen and oxygen

  3. nitrogen

  4. uranium

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Correct Option: D
Explanation:
Uranium is the element which is not essential for life to originate and flourish on a planet.

An atom bomb is based on the principle of

chemistry energy production hazards and safety measures of radiations harmful effects and safety precautions for radiations nuclear physics

  1. nuclear bomb

  2. nuclear fusion

  3. the liquid drop model

  4. none of these

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Correct Option: A
Explanation:

A

Atom bomb is based on the principles of nuclear bomb. When the nuclear bomb detonated gamma rays and X-rays emitted it to thermonuclear temperatures. The ensuing fission reaction creates enormous numbers of high speed neutrons, which can then induce fission in materials not normally prone to it, such as depleted uranium. 

PPE is 

physics energy production hazards and safety measures of radiations harmful effects and safety precautions for radiations nuclear physics

  1. equipments for handling radioactive waste.

  2. equipments for handling radioactive substance.

  3. Personal Protective Equipment

  4. none of the above

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Correct Option: C
Explanation:

PPE is personal protective equipment refers to protective clothing, goggles, helmets or other garments required to protect the wearer's body from injury and infection. The purpose of PPE is to reduce employee exposure to hazards.

Which of the following is followed while handling the radioactive materials?

physics energy production hazards and safety measures of radiations harmful effects and safety precautions for radiations nuclear physics

  1. Wearing protective clothing.

  2. Keeping as far away as is practicable - for example, by using tongskeeping

  3. Keeping radioactive materials in lead-lined containers,

  4. All of the above.

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Correct Option: D
Explanation:

D

While handling with radioactive materials we must wear protective clothing and keep it as far as possible. The radioactive materials must be in a lead lined contained because the gamma rays emitting from the radioactive material can be prevented using lead lined materials only. 

Why should a radioactive substance not be touched by hand?

physics energy production hazards and safety measures of radiations harmful effects and safety precautions for radiations nuclear physics

  1. It is hot

  2. It is very cold

  3. It can harm our body

  4. None of the above

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Correct Option: C
Explanation:
Because it emits a lot of harmful radiations that penetrate our body and cause serious damage to the cells.

In the process of Radio active decay the correct example is _____.

physics energy production hazards and safety measures of radiations harmful effects and safety precautions for radiations nuclear physics

  1. $ _6C^{14} \xrightarrow[of \,\propto \,particle]{emission} { _7C^{15}}$

  2. $ _6C^{14} \xrightarrow[of \,\propto \,particle]{emission} { _7N^{15}} + 1e$

  3. $ _6C^{14} \xrightarrow[of \,\propto \,particle]{Absorption} { _7N^{15}}$

  4. None of these

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Correct Option: D

What safety precautions that you would take while handling the radioactive substances?

physics energy production hazards and safety measures of radiations harmful effects and safety precautions for radiations nuclear physics

  1. Always wear gloves

  2. Don't wear gloves

  3. Wear a proper coat provided in lab

  4. None of the above

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Correct Option: A,C
Explanation:
While handling the radioactive substances,
$\rightarrow$ Always wear gloves.
$\rightarrow$ Wear proper coats provided in the labs.
$\rightarrow$ Keep personal items like handbags, lunchboxes etc. outside the lab.

Two radioactive samples $A$ and $B$ have half lives ${T} _{1}\ and {T} _{2}\left ({T} _{1}>{T} _{2}\right)$ respectively. At $t = 0$, the activity of $B$ was twice the activity of $A$. Their activity will become equal after a time 

physics energy production hazards and safety measures of radiations harmful effects and safety precautions for radiations nuclear physics

  1. $\dfrac {{T} _{1}{T} _{2}}{{T} _{1}-{T} _{2}}$

  2. $\dfrac {{T} _{1}-{T} _{2}}{2}$

  3. $\dfrac {{T} _{1}+{T} _{2}}{2}$

  4. $\dfrac {{T} _{1}{T} _{2}}{{T} _{1}+{T} _{2}}$

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Correct Option: A

The people working with radioactive materials should put on special

physics energy production hazards and safety measures of radiations harmful effects and safety precautions for radiations nuclear physics

  1. iron lined aprons and copper gloves.

  2. silver lined aprons and silver gloves.

  3. lead lined aprons and lead gloves

  4. any of the above can be used.

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Correct Option: C
Explanation:

The people working with radioactive naturals are required to follow strictly the safety rules like they should put on special lead lined aprons and lead gloves. They should handle the radioactive naturals with long lead tongs.

A radioactive element ${X} _{90}^{238}$ decays into ${Y} _{83}^{222}$. The number of $\beta$-particles emitted are

physics nuclear physics beta decay change in nucleus due to radioactive decay alpha, beta and gamma particles (rays) and their properties

  1. 1

  2. 2

  3. 4

  4. 6

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Correct Option: A
Explanation:

The radioactive element undergoes four alpha decays and one beta decay as follows:


$^{238} _{90}X\rightarrow ^{222} _{83}Y+4^4 _2He+ ^{0} _{-1}e$

Clearly only one beta particle (electron) is emitted.