Answer: B) 4 kmph Explanation: Let the distance in one direction = k kms Speed in still water = 4.5 kmph Speed of river = 1.5 Hence, speed in upstream = 4.5 - 1.5 = 3 kmph Speed in downstream = 4.5 + 1.5 = 6 kmph Time taken by Rajesh to row upwards = k/3 hrs Time taken by Rajesh to row downwards = k/6 hrs Now, required Average speed =Total distanceTotal speed = 2kk3 + k6 = 2k x 186k + 3k = 4 kmph    Therefore, the average speed of the whole journey = 4kmph.

Tongue. Yes tongue tastes better than it smells as it can't smell.

Answer: C) Human Beleifs Explanation: Culture is the social behavior and norms found in human societies. The 7 main elements that make up culture are ::   1. Social organization- the family patterns and social classes of a culture.   2. Customs and traditions- way people act, wear, what they eat, and their laws.   3. Language- communication by word of mouth.   4. Religion- a system of beliefs that answers questions about the meaning of life.   5. Art and literature- ways the people entertain themselves. There stories they tell and how they dance. Its also the music they listen to and there artwork.   6. Forms of government- the people or group(s) that control the people and provide/ enforce the laws.   7. Economic systems- the method used by a society to produce and distribute goods and services.

Answer: D) 140 mts Explanation: Speeds of two trains = 30 kmph and 58 kmph => Relative speed = 58 - 30 = 28 kmph = 28 x 5/18 m/s = 70/9 m/s Given a man takes time to cross length of faster train = 18 sec   Now, required Length of faster train = speed x time = 70/9  x  18 = 140 mts.

Here the letter 'M' appears once in Minute and twice in a MoMent.

The Interstate Commerce Act of 1887 is a United States federal law that was designed to regulate the railroad industry, particularly its monopolistic practices.   The reason that the Interstate Commerce Act required that rates be published was to avoid secret rebates and similar deals. Until then, big shippers would demand rebates from railroads, which would in effect reduce their shipping costs without letting competitors know. This is anti-competitive. Hence, the Act required that railroad rates be "reasonable and just," but did not empower the government to fix specific rates.

Answer: C) Science Explanation: As Tennis is a kind of Sport, similarly, Chemistry is a kind of science.   Hence, Tennis : Sport :: Chemistry : Science.

Answer: A) June 26 Explanation: The government has decided to observe anti-Emergency day on June 25-26 and asked all its ministers to hold programmes across the country to remind people how Emergency was clamped by former Prime Minister Indira Gandhi in 1975.