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Пікірлер: 16
@mohammedazam78462 жыл бұрын
Salman Sb, Great work,in Shaa Allah,will more information in future
@ABDULLAHMALIK2 жыл бұрын
MashaALLAH nice and informative
@shamarasheed95872 жыл бұрын
JazakAllah Khair Extremely Informative ...!!!
@abdulraheemakbar36942 жыл бұрын
Thank You for making informative videos 👍😊
@zeeshanzaibmalik82503 ай бұрын
Sir , kindly start making videos lectures which fully covers all important standards
@traveldastan46772 жыл бұрын
Very informative!!
@imtiazahmed53522 жыл бұрын
Hidden talent, remarkable powers of persuasion Great Salman,
@jahanzaibkhan54192 жыл бұрын
Great job sir 👍
@muhammadwaseem81082 жыл бұрын
Excellent boss
@muhammadtahirraza26932 жыл бұрын
Great keep it up
@firefighteriftikhar91282 жыл бұрын
Great sir ma Sha Allah . AMEEN.
@jazamughal1255 Жыл бұрын
Very good information sir
@SaifullahBashirAhmed-bo8ii Жыл бұрын
❤❤❤❤❤
@muhammadusmanrajput2738 Жыл бұрын
🥰🇵🇰🙏
@syednasir10532 жыл бұрын
MashaAllah please tel about CTC what purpose this
@firesafetywithsalman2 жыл бұрын
In 1910, The Pyrene Manufacturing Company of Delaware filed a patent for using carbon tetrachloride (CTC, or CCl4) to extinguish fires.[7] The liquid vaporized and extinguished the flames by inhibiting the chemical chain reaction of the combustion process (it was an early 20th-century presupposition that the fire suppression ability of carbon tetrachloride relied on oxygen removal). In 1911, they patented a small, portable extinguisher that used the chemical.[8] This consisted of a brass or chrome container with an integrated handpump, which was used to expel a jet of liquid towards the fire. It was usually of 1 imperial quart (1.1 l) or 1 imperial pint (0.57 l) capacity but was also available in up to 2 imperial gallons (9.1 l) size. As the container was unpressurized, it could be refilled after use through a filling plug with a fresh supply of CTC.[9] Another type of carbon tetrachloride extinguisher was the fire grenade. This consisted of a glass sphere filled with CTC, that was intended to be hurled at the base of a fire (early ones used salt-water, but CTC was more effective). Carbon tetrachloride was suitable for liquid and electrical fires and the extinguishers were fitted to motor vehicles. Carbon tetrachloride extinguishers were withdrawn in the 1950s because of the chemical's toxicity - exposure to high concentrations damages the nervous system and internal organs. Additionally, when used on a fire, the heat can convert CTC to phosgene gas,[10] formerly used as a chemical weapon.