When were Hiroshima and Nagasaki hit by atom bombs? A) August 1945 B) June 1945 C) April 1944 D) None of these Related MCQs: Fill in the blank with appropriate preposition: The terrorists have been setting …… bombs in trains. The uncharged particle of an atom is called? The sources of hydrogen atom for synthesis of glucose is? The number of electrons of a neutral atom is automatically known if one knows the: