What is the meaning of vacuum flask meaning in Hindi ?

Answer: vacuum flask Definition:

flask with double walls separated by vacuum; used to maintain substances at high or low temperatures Synonyms: vacuum bottle,

vacuum flask Translation:

	Noun • निर्वात बोतल • निर्वात फ़्लास्क
	vacuum    निर्वात शून्य
	flask    बारूददान बोतल

vacuum flask Examples:

	1.	A removable pot, with handle and lid, fits inside the vacuum flask.
	2.	The now-famous vacuum flask was invented by Sir James Dewar in 1892.
	3.	The vacuum flask prevents the water from going up the B�chner flask.
	4.	The guampas and leather-covered vacuum flasks are often personalized with names or logos.
	5.	Dewer's first vacuum flask in 1892 had a silvery mercury coating.
	6.	Thermos bottles are smaller vacuum flasks fitted in a protective casing.
	7.	A vacuum cooker ( ) is a stainless steel vacuum flask.
	8.	The vacuum flask consists of two cork or polyethylene plastic.
	9.	Vacuum flasks, or Dewars, are silvered to approach this ideal.
	10.	The Thermos, a vacuum flask adapted for lunch box use, was introduced in 1904.