Arabs

Arabs (/ˈærəbz/; Arabic: عرب‎, ‘arab) are a major panethnic group whose native language is Arabic, comprising the majority of the Arab world. They primarily inhabit Western Asia, North Africa, and parts of the Horn of Africa. Before the spread of Islam, Arab referred to any of the largely nomadic Semitic tribes inhabiting the northern and central Arabian Peninsula. In modern usage Arab refers to a heterogeneous collection of Arabic-speaking peoples in the Middle East and North Africa. The ties that bind Arabs are linguistic, cultural, and political, and to a lesser extent genetic, with Arabized Arabs displaying genetic admixture from the Arabian peninsula as well as indigenous elements. As such, Arab identity is based on one or more of genealogical, linguistic or cultural grounds, although with competing identities often taking a more prominent role, based on considerations including regional, national, clan, kin, sect, and tribe affiliations and relationships. Not all people who could be considered Arab identify as such. If the Arab panethnicity is regarded as a single population, then it constitutes the world's second largest group of people after the Han Chinese.

Indian numbering system

The Indian numbering system is used in India as well as in Bangladesh, Nepal, Pakistan, and Sri Lanka. It is based on the Vedic numbering system in which numbers over 9,999 are written in two-digit groups (or a mix of two- and three-digit groups) rather than the three-digit groups used in most other parts of the world. In Pakistan, this system is used in Urdu and other regional language media, but not in English-language media.

The terms lakh (100,000 or 1,00,000 in the Indian system) and crore (10,000,000 or 1,00,00,000 in the Indian system) are used in Indian English to express large numbers. For example, in India 150,000 rupees becomes 1.5 lakh rupees, written as ₹1,50,000 or INR 1,50,000, while 30,000,000 (thirty million) rupees becomes 3 crore rupees, written as ₹3,00,00,000 with commas at the thousand, lakh, and crore levels, and 1,000,000,000 (one billion) rupees (one hundred crore rupees) is written ₹1,00,00,00,000.

Use of separators

The Indian numbering system uses separators differently from the international norm; in such numbers of at least one lakh (one hundred thousand), a comma divides every two rather than every three digits, thus:

Arabs in India

A small but recognizable people with Arab origins have over time settled in the India.Many who arrived in Gujarat were later recruited to the army. Most Gujarati Arabs were traders, and business men who sold or traded silk, diamonds and other valuables resulting in wealthy business men. The city of Surat and villages within the city are notorious for Arab settlements. Variav and Randev are the few villages that Arabs started their lives in. In Eastern Uttar Pradesh, Iraqis arrived in 15th and 16th century from Sindh, Pakistan. These people claim ancestry from Arab tribe of Bani Tamim.In Hyderabad, Chaush are Arab community of Hadhrami descent whose ancestors were recruited as soldier by Nizam of Hyderabad. In Kerala, Syed Thangals of Hadhrami descent settled around 17th century as missionaries to propagate Islam. There are also Shia Sayyids in Northern region of country who claim descent from Wasit, Iraq like Zaidis. Sunni Sayyid of the country also claim Arab descent from Sufi missionaries but it is hard to say that every Sufi really belonged to Arab. Most of the Sufis migrated from Persia. Sunni Sayyid also include converts from higher Hindu castes like Brahmin and Kshatriya. Sunni Sheikhs also claim Arab descent from Sufis or migrants but it remains hoax. They don't know their tribe but trace lineage from Umar, Abu Bakr and Uthman, the Rashidun Caliphate. Many of present Sheikhs converted from Hindu castes such as Kayasth and Rajput.

Reaction

Reaction may refer to: Response to another event

Reaction (The Spectacular Spider-Man)

"Reaction" is the eighth episode of the American animated television series The Spectacular Spider-Man, which is based on the comic book character Spider-Man, created by Stan Lee and Steve Ditko. The episode originally broadcast in the United States on the Kids WB! block for The CW on May 3, 2008, where it was rated TV-Y7-FV.

The episode details Dr. Otto Octavius as an accidental laboratory incident caused by the Green Goblin where the radiation merges special mechanical tentacles to his skin and seemingly damaged his brain (although it was later suggested that what was interpreted as brain damage was in fact his mind rewiring itself to accommodate four extra limbs), and turns him from a timid and weak scientist into the villain Dr. Octopus. "Reaction" was directed by Jennifer Coyle and was the first episode of the series to be written by Randy Jandt. While writing the teleplay, Jandt was challenged with staying true to the original material of Spider-Man, particularly towards that of Dr. Octopus.

Chemical reaction

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation. Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes may occur.

The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Reactions often consist of a sequence of individual sub-steps, the so-called elementary reactions, and the information on the precise course of action is part of the reaction mechanism. Chemical reactions are described with chemical equations, which symbolically present the starting materials, end products, and sometimes intermediate products and reaction conditions.