The dorsum of the tongue is not the back of the tongue.

In standard GA English the diphthong /əʊ/ starts in the centre of the mouth (GO).

Acoustic phonetics is a sub-discipline of phonetics.

Hard and soft palate contain the vocal cords.

In rising intonation the pitch of the voice falls at the end of the sentence.

Accurate pronunciation does not lead to willingness to participate in a conversation.

English has four glottal consonants.

For high vowels, the tongue elevated towards the roof of the mouth.

The classification of English diphthongs is not based on the direction of the vowel glide.

Close vowels are also known as high vowels.