Let us analyze the statement step-by-step:
1. "Anu's mother is the only daughter of my mother" means:
$\rightarrow$ Ram's mother has only one daughter.
$\rightarrow$ That one daughter is Anu's mother.
So, Anu's mother is Ram’s sister.
2. If Anu's mother is Ram's sister, then Anu is the daughter of Ram’s sister.
Hence, by relationship, Anu is Ram’s niece.
Relationship Chain:
Ram's mother $\Rightarrow$ only daughter (Ram's sister) $\Rightarrow$ Anu is her daughter $\Rightarrow$ Anu is Ram’s niece.
Therefore, Anu is related to Ram as his niece.
Standard electrode potentials of Na, Ni, and Cl are given. Which one has the highest reducing power?
$\text{Cl}_{2}(g) + 2e^- \&\rightarrow 2\text{Cl}^- $
$\text{Ni}^{2+} + 2e^- \&\rightarrow \text{Ni}(s) $
$\text{Na}^+ + e^- \&\rightarrow \text{Na}(s) $