With regard to the assertion and reason, choose the correct option. Assertion [A]: α, β and γ rays are emitted by disintegration of atomic nuclei of radioactive elements. Reason [R]: Nuclear fallout contains radioactive elements. Options: A . &nbspBoth A and R are true and R is the correct explanation for A B . &nbspBoth A and R are true but R is not the correct explanation for A C . &nbspA is true but R is false D . &nbspBoth the A and R are false

With regard to the assertion and reason, choose the correct option. Assertion [A

Question

With regard to the assertion and reason, choose the correct option.
Assertion [A]: α, β and γ rays are emitted by disintegration of atomic nuclei of radioactive elements.
Reason [R]: Nuclear fallout contains radioactive elements.

Options:

A . Both A and R are true and R is the correct explanation for A

B . Both A and R are true but R is not the correct explanation for A

C . A is true but R is false

D . Both the A and R are false

Answer: Option B
:
B
An element subject to spontaneous degeneration of its nucleus accompanied by the emission of alpha particles, betaparticlesor gamma rays is called a radioactive element. Nuclear fallout refers tothe radioactive particles that fall on to the earth as a result of a nuclear explosion. Fallout particles vary in size from thousandths of a millimeter to several millimeters. Much of this material falls directly back down close to ground where the explosion happenedwithin several minutes after the explosion, but some get dispered by winds over long distances. The fallout usually gets suspendedin the atmosphere, 6 to 7 km above the earth's surface. These radionuclides alsooften settle down by rain and get mixed with soil and water. From there, they can easily enter the food chain and finally get deposited in the human body where they cause serious health hazards.

Was this answer helpful ?

Next Question