Elements of Pronunciation

Identify the number of syllables in the word 'idiosyncratic'

Choose the best pronunciation of the word 'Supposed' from the following options.

Choose the best pronunciation of the word 'Succinct' from the following options.

Choose the best pronunciation of the word 'Substansive' from the following options.

Choose the best pronunciation of the word 'Penitentiary' from the following options.

Choose the best pronunciation of the word 'Ophthalmology' from the following options.

Choose the best pronunciation of the word 'Negotiate' from the following options.

Choose the best pronunciation of the word 'Mayoral' from the following options.

Choose the best pronunciation of the word 'Mauve' from the following options.

Choose the best pronunciation of the word 'Machinations' from the following options.

Choose the best pronunciation of the word 'Litigious' from the following options.

Choose the best pronunciation of the word 'Kudos' from the following options.

Which kind of attractive forces are likely to be holding particles together in a substance that melts at $681 °\mathrm{C}$ and that conducts electricity when molten but not when solid?