Half many five-membered rings are there in fullerenes?

The group 14 elements form _________ hydrides.

Which of the following is true regarding reducing character?

Bituminous is a common type of _________

Which of the following is true regarding the thermal stability of halides of Carbon family?

Aluminium oxide as otherwise called as __________

Which of the following is a colourless gas?

Which of the following is not an alum?