651. In 1945, fifty nations met to phrase the basic charter for a world organization which would “save succeeding generations from the scourge of war”. This conference took place at

A. Yalta
B. London
C. San Francisco
D. Dumbarton Oaks
✅ The correct answer is option C.
In 1945, fifty nations met to phrase the basic charter for a world organization which would “save succeeding generations from the scourge of war”. This conference took place at San Francisco.

652. When did Ashoka became emperor of India?

A. 336 BC
B. 375 BC
C. 279 BC
D. 264 BC
✅ The correct answer is option D.
Ashoka became emperor of India in 264 BC. He saw corpses, ruins and people that lost everything they had. Ashoka converted in 264 BC to Buddhism and became a peaceful and caring ruler of his people. Around 260 BC, the Maurya Empire had become the largest and wealthiest empire on Earth.

653. Sushri Lata Dinanath Mangeshkar received Bharath Ratna in

A. 2000
B. 2001
C. 2002
D. 2003
✅ The correct answer is option B.
Sushri Lata Dinanath Mangeshkar received Bharath Ratna in 2001. She is one of the best-known and most respected playback singers in India. She has recorded songs in over a thousand Hindi films and has sung songs in over thirty-six regional Indian languages and foreign languages, though primarily in Marathi, Hindi, and Bengali.

654. The instrument used to measure electric current is

A. ammeter
B. electrometer
C. galvanometer
D. spectrometer
✅ The correct answer is option A.
The instrument used to measure electric current is ammeter. Ammeter, instrument for measuring either direct or alternating electric current, in amperes. An ammeter can measure a wide range of current values because at high values only a small portion of the current is directed through the meter mechanism; a shunt in parallel with the meter carries the major portion.

655. The reaction which converts sugar solution into alcohol is an example of

A. saponification
B. hydrogenation
C. fermentation
D. hydrolysis
✅ The correct answer is option C.
The reaction which converts sugar solution into alcohol is an example of fermentation. Fermentation is a metabolic process in which an organism converts a carbohydrate, such as starch or a sugar, into an alcohol or an acid.

656. Unofficial, and usually illegal, system of providing people with more then their share of goods and services where their prices are controlled, is called

A. black money
B. blue chip
C. black market
D. black economy
✅ The correct answer is option C.
Unofficial, and usually illegal, system of providing people with more then their share of goods and services where their prices are controlled, is called black market. The black market is distinct from the grey market, in which commodities are distributed through channels that, while legal, are unofficial, unauthorized, or unintended by the original manufacturer, and the white market, in which trade is legal and official.

657. The basic cause of World War II was

A. an unjust Treaty of Versailles
B. rise of the Nazi Party in Germany
C. Japan’s policy of expansion and imperialism of England and France
D. All of the above
✅ The correct answer is option D.
The basic cause of World War II was an unjust Treaty of Versailles, rise of the Nazi Party in Germany and Japan’s policy of expansion and imperialism of England and France.

658. Which company’s nickname is “Big Blue”?

A. IBM
B. Microsoft
C. Apple
D. Micromax
✅ The correct answer is option A.
Big Blue is a nickname for IBM. Big Blue arose in the early 1980’s in the popular and financial press as nickname for IBM. The name has unclear specific origins, but is generally assumed to refer to the blue tint of the cases of its computers.

660. IDA stands for

A. Indian Development Agency
B. Industrial Development Analyses
C. International Development Agency
D. None of the above
✅ The correct answer is option C.
IDA stands for International Development Agency. The International Development Association (IDA) is the part of the World Bank that helps the world’s poorest countries. It was established in 1960 to complement the existing International Bank for Reconstruction and Development (IBRD) by lending to developing countries which suffer from the lowest gross national income, from troubled creditworthiness, or from the lowest per capita income.