Answer:
A control group is someone who takes control over something so a tyrant or a dictator.
Explanation:
If this isnt what your looking for let me know, there wasnt alot of context.
Answer: Option (e) is the correct answer.
Explanation:
Chemical formula of a nitrate ion is
and it acts as a strong oxidizing agent because it itself gets reduced easily.
As we know that an oxidizing agent tends to oxidize other substances by itself gaining electrons. As a result, there will occur a decrease in its oxidation state.
The oxidation number of nitrogen in
is +5. So, it gains electrons and helps in oxidizing other substances.
Thus, we can conclude that the nitrate anion is a strong oxidizing agent.
The answer is (1) 90 Sr. The definition of beta decay is that a type of radioactive decay in which one proton will change to one neutron and release one electron inside the nucleus. And 90Sr is a common beta emitter.