What is formed when sodium bicarbonate is heated strongly?

During transcription,the site on $DNA$ where $RNA$ polymerase binds is called .........

The number of acidic hydrogen atoms in $but-1-yne$ is ........

In the context of the lanthanoids,which of the following statements is not correct?

Which one of the following is formed apart from sodium chloride when chlorine reacts with hot concentrated sodium hydroxide?

Let $f(x)$ be defined for all $x > 0$ and be continuous. Let $f(x)$ satisfy $f(\frac{x}{y}) = f(x) - f(y)$ for all $x, y > 0$ and $f(e) = 1$. Then: