Answer: B) Benjamin Franklin Explanation: Benjamin Franklin has long been credited with the invention of bifocal lenses and he was the first to wear bifocal lenses. He did not produce them himself but instead had some optician in London or France make them for him to overcome Presbyopia, a condition that Franklin suffered. He was tired switching between lenses for far and near sightedness. And that resulted in inventing Bifocal Lenses.

Answer: A) Air Explanation: Light travels fastest in Vacuum. The fastest thing in the whole universe is the speed of light in a vacuum like outer space. It is about 2.99 x 108 m/s.

Answer: A) print files on paper Explanation: A report generator is a computer program whose purpose is to take data from a source such as a database, XML stream or a spreadsheet, and use it to produce a document in a format which satisfies a particular human readership.   Hence, A report generator is used to print files on paper.

Answer: C) 5% Explanation: Let 'R%' be the rate of interest From the given data, 25202400 = 1 + R10041 + R1003⇒1 + R100 = 6360⇒R = 5   Hence, the rate of interest R = 5% per annum.

Answer: C) Rs. 12,800 Explanation: 16x8 : Px4 = 5:2 P = 12.8 => Rs.12,800

Answer: D) patterns of religious activity and their effect on social life Explanation: Sociology of religion is the study of the beliefs, practices and organizational forms of religion using the tools and methods of the discipline of sociology.   Hence, Sociological analysis of religion is concerned with patterns of religious activity and their effect on social life.

Answer: A) Women left traditional roles to become active in reform during the Progressive Movement. Explanation: The Progressive Era took place in the US from the 1890s to the1920s. The movement was an effort to reform the government andeliminate the corruption within it. Social activists also wanted toreform the educational system, the insurance industry, thechurches, and many other things they felt were out of control, andnot working in the best interests of the citizens.

Answer: D) 1927 Explanation: The British government appointed a commission under the chairmanship of Sir John Simon to report on India's constitutional progress for introducing constitutional reforms as had been promised in 1927.