Radon and its significance in Radiation Exposure
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Questions and Answers

Cosmic rays mainly consist of electrons.

False

Low levels of uranium, thorium, and their decay products are only found in the soil.

False

Radon is a gas that comes from the radioactive decay of natural uranium and thorium.

True

People living in granite areas receive less terrestrial radiation than others.

<p>False</p> Signup and view all the answers

Part of the radon gas stays underground and goes into the groundwater.

<p>False</p> Signup and view all the answers

Cosmic ray exposure is higher at sea level compared to higher elevations.

<p>False</p> Signup and view all the answers

Bone marrow is one of the most important organs in the human body.

<p>True</p> Signup and view all the answers

Irradiation of pregnant patients is strictly controlled to prevent birth defects.

<p>True</p> Signup and view all the answers

The average radiation dose to the population is higher in therapeutic uses compared to diagnostic uses.

<p>False</p> Signup and view all the answers

The harmful effects of radiation are independent of factors like type of radiation and radiation dose.

<p>False</p> Signup and view all the answers

The sensitivity of tissues and organs to radiation has no impact on the harmful effects.

<p>False</p> Signup and view all the answers

Natural sources of radiation include 238U and 232Th found in the earth.

<p>True</p> Signup and view all the answers

Background radiation is only present in man-made environments.

<p>False</p> Signup and view all the answers

Alpha, beta, and gamma are the three types of radiations emitted by different radioactive materials.

<p>True</p> Signup and view all the answers

Cosmic radiation exposure varies in different parts of the world due to differences in elevation.

<p>True</p> Signup and view all the answers

The largest source of human-made radiation exposure is from tobacco use.

<p>False</p> Signup and view all the answers

Charged particles from the sun and stars interact with the earth’s atmosphere to produce a shower of radiation.

<p>False</p> Signup and view all the answers

Radon gas is the most important member of the uranium series.

<p>False</p> Signup and view all the answers

Radon is lighter than air and rises up into upper floors of buildings.

<p>False</p> Signup and view all the answers

Radon concentration doesn't vary depending on the uranium content of the underlying geology.

<p>False</p> Signup and view all the answers

Radon gas can be found in natural spring or mineral waters from 'radon affected areas'.

<p>True</p> Signup and view all the answers

Radon exposure can increase the risk of lung cancer due to beta radiation.

<p>False</p> Signup and view all the answers

All people have radioactive carbon-12 in their bodies from birth.

<p>False</p> Signup and view all the answers

Radionuclides accumulate in plants, feed, or water, but not in animals.

<p>False</p> Signup and view all the answers

Nuclear weapons derive their explosive power from controlled radioactive break-up of plutonium and uranium.

<p>False</p> Signup and view all the answers

After WW2, no country conducted atmospheric nuclear weapons tests.

<p>False</p> Signup and view all the answers

Tobacco smoke contains radionuclides like polonium-210.

<p>True</p> Signup and view all the answers

Lead-210 in tobacco smoke is deposited on bones.

<p>False</p> Signup and view all the answers

Over 90% of total population exposure to man-made ionizing radiation comes from the diagnostic use of X-rays.

<p>True</p> Signup and view all the answers

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