Explain the following. Bottle containing NaOH solution should not be closed by glass lid.

PLACEHOLDER ANSWER - the answer is an explanation. Glass contains silica, which slowly reacts with sodium hydroxide, $$2\text{NaOH} + \text{SiO}_2 \rightarrow \text{Na}_2\text{SiO}_3 + \text{H}_2\text{O}$$. The sodium silicate formed acts like a glue and cements the glass stopper to the neck of the bottle, so it cannot be opened. Rubber or plastic stoppers are used instead.