Choose the correct alternative for the given relation.
Roentgen : X-rays : : Becquerel : ?
Uranium
Radioactivity
Fission
Superconductivity
$12$ is related to $15$ in the same way as $15$ is related to.......?
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Hypocrisy : Honesty
Choose the correct alternative for the word belongs to the same group.
Which of the following is the same as Radium, Polonium, Uranium ?
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Influenza : Virus : : Typhoid : ?
Choose the correct alternative for the given relation.
Given set : $(49, 25, 9)$