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This video about salt in bangla.
Video Chapters:
00:00 - salt introduction
00:51 - salt chemical definition
01:24 - uses of salt
01:51 - why salt not to be finished
02:06 - how salt created in ocean
02:35 - why sea water salty?
03:40 - salt density of ocean,the great salt lake,dead sea
03:58 - why people floating in dead sea
04:20 - how sea salt is harvested from sea water
05:01 - salt history
05:27 - salt to salary
06:02 - why we should eat salt
06:36 - effect of eating too much salt
07:03 - source of table salt
07:52 - underground salt mine storage
08:30 - salt chemical application
08:54 - how salt improve food taste
Salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in its natural form as a crystalline mineral is known as rock salt or halite. Salt is present in vast quantities in seawater, where it is the main mineral constituent. The open ocean has about 35 grams (1.2 oz) of solids per liter of sea water, a salinity of 3.5%.
Salt is essential for life in general, and saltiness is one of the basic human tastes. Salt is one of the oldest and most ubiquitous food seasonings, and salting is an important method of food preservation.
Some of the earliest evidence of salt processing dates to around 6,000 BC, when people living in the area of present-day Romania boiled spring water to extract salts; a salt-works in China dates to approximately the same period. Salt was also prized by the ancient Hebrews, the Greeks, the Romans, the Byzantines, the Hittites, Egyptians, and the Indians. Salt became an important article of trade and was transported by boat across the Mediterranean Sea, along specially built salt roads, and across the Sahara on camel caravans. The scarcity and universal need for salt have led nations to go to war over it and use it to raise tax revenues. Salt is used in religious ceremonies and has other cultural and traditional significance.
Salt is processed from salt mines, and by the evaporation of seawater (sea salt) and mineral-rich spring water in shallow pools. Its major industrial products are caustic soda and chlorine; salt is used in many industrial processes including the manufacture of polyvinyl chloride, plastics, paper pulp and many other products. Of the annual global production of around two hundred million tonnes of salt, about 6% is used for human consumption. Other uses include water conditioning processes, de-icing highways, and agricultural use. Edible salt is sold in forms such as sea salt and table salt which usually contains an anti-caking agent and may be iodised to prevent iodine deficiency. As well as its use in cooking and at the table, salt is present in many processed foods.
#BigganPiC #salt #salt_to_salary #salt_uses #Physics #science #লবণ
Video clip use under creative commons license and fair use policy.
Video edit by filmora.
Audio edit by audacity.
Attribution:
www.pexels.com
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Read More:
en.wiktionary.org/wiki/salary
seasalt.com/history-of-salt