Mizo has voicing contrasts in nasals. This study investigates the acoustic properties of Mizo voiced and voiceless nasals using nasometric measurements. The dual channel data obtained for Mizo nasals is separated into oral and nasal channels and nasalance is calculated at every 10% of the duration of the nasals. Apart from that, the amount of voicing and duration of the nasals are also measured. The results show that nasalance is affected by the place of articulation of the nasals. Additionally, the voiceless nasals are found to be significantly longer than the voiced nasals.