M

Mr. Dubey • 52.30K Points
Coach 

Q. For how many days is radioactive solid waste kept is kept under water at 6m deep for initial cooling?

(A) 15 days
(B) 50 days
(C) 30 days
(D) 100 days
Correct : Option (D)

Explanation: 
 it is necessary to keep the radioactive solid waste first in the water of 6m depth nearly for 100 days. it was found that after 100 days cooling of radioactive waste of 28mw plant in water still has a radioactivity equal to million grams of radium. about 50% radioactive elements disappear during cooling.

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