QUES: About 40,000,000 tons were produced in 1984[needs update]. It is obtained as the "heavy" (i.e., difficult to distill) fraction. Material with a boiling point greater than around 500 C is considered asphalt. Vacuum distillation separates it from the other components in crude oil (such as naphtha, gasoline and diesel). The resulting material is typically further treated to extract small but valuable amounts of lubricants and to adjust the properties of the material to suit applications. In a de-asphalting unit, the crude asphalt is treated with either propane or butane in a supercritical phase to extract the lighter molecules, which are then separated. Further processing is possible by "blowing" the product: namely reacting it with oxygen. This step makes the product harder and more viscous.

How many tons were produced in 1927?
What is the answer?
ANS: unanswerable
QUES: Strasbourg's historic city centre, the Grande Ile (Grand Island), was classified a World Heritage site by UNESCO in 1988, the first time such an honour was placed on an entire city centre. Strasbourg is immersed in the Franco-German culture and although violently disputed throughout history, has been a bridge of unity between France and Germany for centuries, especially through the University of Strasbourg, currently the second largest in France, and the coexistence of Catholic and Protestant culture. The largest Islamic place of worship in France, the Strasbourg Grand Mosque, was inaugurated by French Interior Minister Manuel Valls on 27 September 2012.

In what year was University of Strasbourg established?
What is the answer?
ANS: unanswerable
QUES: The state is well known for its handicrafts. The carpets, leather works, shawls, metalware, woodwork and paintings are worth appreciating. Pashmina shawls are a product that is highly in demand in Himachal and all over the country. Himachali caps are famous art work of the people. Extreme cold winters of Himachal necessitated wool weaving. Nearly every household in Himachal owns a pit-loom. Wool is considered as pure and is used as a ritual cloth. The well-known woven object is the shawl, ranging from fine pashmina to the coarse desar. Kullu is famous for its shawls with striking patterns and vibrant colours. Kangra and Dharamshala are famous for Kangra miniature paintings.

What is desar considered as when used as ritual cloth?
What is the answer?
ANS:
unanswerable