Article: When the alloy cools and solidifies (crystallizes), its mechanical properties will often be quite different from those of its individual constituents. A metal that is normally very soft and malleable, such as aluminium, can be altered by alloying it with another soft metal, like copper. Although both metals are very soft and ductile, the resulting aluminium alloy will be much harder and stronger. Adding a small amount of non-metallic carbon to iron produces an alloy called steel. Due to its very-high strength and toughness (which is much higher than pure iron), and its ability to be greatly altered by heat treatment, steel is one of the most common alloys in modern use. By adding chromium to steel, its resistance to corrosion can be enhanced, creating stainless steel, while adding silicon will alter its electrical characteristics, producing silicon steel.

Question: What can be added to steel to enhance is corrosion resistance?
Ans: chromium


Article: New domestic housing in many parts of the world today is commonly made from timber-framed construction. Engineered wood products are becoming a bigger part of the construction industry. They may be used in both residential and commercial buildings as structural and aesthetic materials.

Question: What type of construction is often used now to build homes in much of the world?
Ans: timber-framed


Article: Versions of revived Palladian architecture dominated English country house architecture. Houses were increasingly placed in grand landscaped settings, and large houses were generally made wide and relatively shallow, largely to look more impressive from a distance. The height was usually highest in the centre, and the Baroque emphasis on corner pavilions often found on the continent generally avoided. In grand houses, an entrance hall led to steps up to a piano nobile or mezzanine floor where the main reception rooms were. Typically the basement area or "rustic", with kitchens, offices and service areas, as well as male guests with muddy boots, came some way above ground, and was lit by windows that were high on the inside, but just above ground level outside. A single block was typical, with a perhaps a small court for carriages at the front marked off by railings and a gate, but rarely a stone gatehouse, or side wings around the court.

Question: What was done to make houses look more impressive from a distance?
Ans: made wide and relatively shallow


Article: In the fall of 1958, Nasser formed a tripartite committee consisting of Zakaria Mohieddin, al-Hawrani, and Salah Bitar to oversee developments in Syria. By moving the latter two, who were Ba'athists, to Cairo, he neutralized important political figures who had their own ideas about how Syria should be run. He put Syria under Sarraj, who effectively reduced the province to a police state by imprisoning and exiling landholders who objected to the introduction of Egyptian agricultural reform in Syria, as well as communists. Following the Lebanese election of Fuad Chehab in September 1958, relations between Lebanon and the UAR improved considerably. On 25 March 1959, Chehab and Nasser met at the Lebanese–Syrian border and compromised on an end to the Lebanese crisis.

Question: Who did Lebanon elect in 1958?
Ans:
Fuad Chehab