The main reason for making the cover of a vacuum flask airtight is to prevent heat loss by
The airtight stopper prevents heat loss by convection because it is tightly sealed.
Please don't post or ask to join a "Group" or "Whatsapp Group" as a comment. It will be deleted. To join or start a group, please click here
Contributions ({{ comment_count }})
Please wait...
Modal title
Report
Block User
{{ feedback_modal_data.title }}