13.
Electron was discovered by
Answer : D. J.J. Thomson
14.
Proton carries
Answer : A. a positive charge
15.
The radio isotope used for locating brain tumer is
Answer : C. Iodine
16.
Hydrogen bomb involves the principle of
Answer : B. Nuclear Fusion
17.
What is the name of the nuclear reactor at Trombay?
Answer : A. BARC
18.
Which of these four elements are essential for the construction of nuclear reactors?
Answer : C. Zirconium
