The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?
(A) 3 billion years
(B) 100 years
(C) 0.01 minute
(D) 13 days
Copyright © 2012 General knowledge Questions and Answers. All rights reserved.
Super SEO created by Blogger Tuts | Published by GalleryBloggerTemplates.com