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Pakistan Telecommunication Company Ltd., commonly known as PTCL, is the national telecommunication company in Pakistan. [1] [3] PTCL provides telephone and internet services nationwide and is the backbone for the country's telecommunication infrastructure. The corporation manages and operates around 2000 telephone exchanges across the country ...
The pentahydrate is stable and is used as the commercial form of PtCl 4. Treatment of PtCl 4 with aqueous base gives the [Pt(OH) 6] 2− ion. With methyl Grignard reagents followed by partial hydrolysis, PtCl 4 converts to the cuboidal cluster [Pt(CH 3) 3 (OH)] 4. [6] Upon heating PtCl 4 evolves chlorine to give PtCl 2: PtCl 4 → PtCl 2 + Cl 2
On 1 July 2009, telephone numbers in Karachi and Lahore were changed from seven digits to eight digits. This was accomplished by adding the digit 9 to the beginning of any phone number that started with a 9 (government and semi-government connexions), and adding the digit 3 to any phone numbers that did not start with the number 9. [1]
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A telephone directory, commonly called a telephone book, telephone address book, phonebook, or the white and yellow pages, is a listing of telephone subscribers in a geographical area or subscribers to services provided by the organization that publishes the directory. Its purpose is to allow the telephone number of a subscriber identified by ...
Number Prefix Technology Services Ownership Total Subscribers as of January 2025 [1] Mainland Pakistan AJ&K/Gilgit-Baltistan; 1 Jazz (PMCL - Pakistan Mobile Communications Limited) 410 / 01 410 / 07 030x 032x 2G: 900 MHz (GPRS, EDGE) 4G: 900 (B8) / 1800 (B3) / 2100 (B1) MHz (LTE/LTE-A) 900 / 1800 MHz (GPRS, EDGE) Mobile Broadband VoLTE / VoWiFi
The Telecommunications Ordinance of 1994 created the Pakistan Telecommunication Authority (PTA), Pakistan's first independent telecommunications regulator, and the Pakistan Telecommunication Company Ltd (PTCL), a state-owned monopoly. [1] Due to a lack of competition, local telephone call rates were high and international call rates were even ...
PtCl 4 → PtCl 2 + Cl 2. Transformations such as this are "driven" by entropy, the free energy gained upon the release of a gaseous product from a solid. Upon heating to still higher temperatures, PtCl 2 releases more chlorine to give metallic Pt. This conversion is the basis of the gravimetric assay of the purity of the PtCl 2 product.