QUES: Areas that should not be soldered may be covered with solder resist (solder mask). One of the most common solder resists used today is called "LPI" (liquid photoimageable solder mask). A photo-sensitive coating is applied to the surface of the PWB, then exposed to light through the solder mask image film, and finally developed where the unexposed areas are washed away. Dry film solder mask is similar to the dry film used to image the PWB for plating or etching. After being laminated to the PWB surface it is imaged and develop as LPI. Once common but no longer commonly used because of its low accuracy and resolution is to screen print epoxy ink. Solder resist also provides protection from the environment.
A photo-sensitive coating is applied beneath the surface of what?

ANS: unanswerable

QUES: Although short-lived, one of the first empires known to history was that of Eannatum of Lagash, who annexed practically all of Sumer, including Kish, Uruk, Ur, and Larsa, and reduced to tribute the city-state of Umma, arch-rival of Lagash. In addition, his realm extended to parts of Elam and along the Persian Gulf. He seems to have used terror as a matter of policy. Eannatum's Stele of the Vultures depicts vultures pecking at the severed heads and other body parts of his enemies. His empire collapsed shortly after his death.
What city-state was the rival of Lagash?

ANS: Umma

QUES: These events and the disagreements that arose from them within the Whig Party, led to its break-up and to the rupture of Burke's friendship with Fox. In debate in Parliament on Britain's relations with Russia, Fox praised the principles of the revolution, although Burke was not able to reply at this time as he was "overpowered by continued cries of question from his own side of the House". When Parliament was debating the Quebec Bill for a constitution for Canada, Fox praised the revolution and criticised some of Burke's arguments, such as hereditary power. On 6 May 1791, during another debate in Parliament on the Quebec Bill, Burke used the opportunity to answer Fox, and to condemn the new French Constitution and "the horrible consequences flowing from the French idea of the Rights of Man". Burke asserted that those ideas were the antithesis of both the British and the American constitutions. Burke was interrupted, and Fox intervened, saying that Burke should be allowed to carry on with his speech. A vote of censure was moved against Burke, however, for noticing the affairs of France, which was moved by Lord Sheffield and seconded by Fox. Pitt made a speech praising Burke, and Fox made a speechboth rebuking and complimenting Burke. He questioned the sincerity of Burke, who seemed to have forgotten the lessons he had learned from him, quoting from Burke's own speeches of fourteen and fifteen years before.
What type of power did Fox think Burke was wrong about?

ANS: hereditary

QUES: One hundred years after the fall of Constantinople in 1453, Pierre Belon described in his work Observations in 1553 that pissasphalto, a mixture of pitch and bitumen, was used in Dubrovnik for tarring of ships from where it was exported to a market place in Venice where it could be bought by anyone. An 1838 edition of Mechanics Magazine cites an early use of asphalt in France. A pamphlet dated 1621, by "a certain Monsieur d'Eyrinys, states that he had discovered the existence (of asphaltum) in large quantities in the vicinity of Neufchatel", and that he proposed to use it in a variety of ways "principally in the construction of air-proof granaries, and in protecting, by means of the arches, the water-courses in the city of Paris from the intrusion of dirt and filth", which at that time made the water unusable. "He expatiates also on the excellence of this material for forming level and durable terraces" in palaces, "the notion of forming such terraces in the streets not one likely to cross the brain of a Parisian of that generation". But it was generally neglected in France until the revolution of 1830. Then, in the 1830s, there was a surge of interest, and asphalt became widely used "for pavements, flat roofs, and the lining of cisterns, and in England, some use of it had been made of it for similar purposes". Its rise in Europe was "a sudden phenomenon", after natural deposits were found "in France at Osbann (BasRhin), the Parc (l'Ain) and the Puy-de-la-Poix (Puy-de-Dome)", although it could also be made artificially. One of the earliest uses in France was the laying of about 24,000 square yards of Seyssel asphalt at the Place de la Concorde in 1835.
In Observations, Monsieur d'Eyrinys described what?

ANS:
unanswerable