IGNOU BEd Sample paper Subject Competence :Science

IGNOU BEd Sample paper Subject Competence :ScienceIGNOU BEd Sample paper Subject Competence :Science sample question paper or Entranct Test for admission to B.Ed Programme IGNOU BEd Exam Model Paper for BEd Entrance Subject Competence :Science1. ML2T2 is the dimensional formula of—(A) Work done only(B) Potential energy only(C) Kinetic energy only(D) All are correctAns. (D)2. A car covers the first half of its distance between two places at a speed of 40 km/hour and the second half of the distance at the speed of 60 km/hour. The average speed of the car over the whole journey is then—(A) 50 km/hour(B) 48 km/hour(C) 45 km/hour(D) None of theseAns. (B)3. The energy possessed by a wound watch spring is—(A) Zero(B) Kinetic(C) Potential(D) Both kinetic and potentialAns. (C)4. Two identical...

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A new Earth -Astronomers find a planet similar to our own.

Astronomers have spotted evidence of a second Earth being built around a distant star 424 light-years away. Using NASA's Spitzer Space Telescope, astronomers have spotted a huge belt of warm dust swirling around a young star called HD 113766 that is just slightly larger than our sun. The dust belt, which scientists suspect is clumping together to form planets, is located in the middle of the star system's terrestrial habitable zone where temperatures are moderate enough to sustain liquid water. Scientists estimate there is enough material in the belt to form a Mars-sized world or larger. At approximately 10 million years old, the star is just the right age for forming rocky planets, the researchers say. Their finding will be detailed in an upcoming issue of Astrophysical Journal."The timing...

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Everyday Science Simplified

Everyday Science Simplified Q.   A man with a load jumps from a high building. What will be the load experienced by him? A.   Zero, because the acceleration of his fall is equal to the acceleration due to gravity of the earth.   Q.   A piece of chalk when immersed in water, emits bubbles. Why ? A.   Chalk consists of pores forming capillaries. When it is immersed in water, the water begins to rise in the capillaries and air present there is expelled in the form of bubbles.   Q.   Why does a liquid remain hot or cold for a long time inside a thermos flask? A.  The presence of air, a poor conductor of heat, between the double glass wall of a thermos flask, keeps the liquid hot or cold inside a flask for a long time.   Q.   Why...

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Posted in: General Science , general tips , science

Interesting Environmental Facts

Interesting Environmental Facts Human Influenced FactsIf just 25% of U.S. families used 10 fewer plastic bags a month, we would save over 2.5 BILLION bags a year.   On the average, the 140 million cars in America are estimated to travel almost 4 billion miles in a day, and according to the Department of Transportation, they use over 200 million gallons of gasoline doing it. Every year we throw away 24 million tons of leaves and grass. Leaves alone account for 75% of our solid waste in the fall. Over 100 pesticide ingredients are suspected to cause birth defects, cancer, and gene mutations. Every ton of recycled office paper saves 380 gallons of oil. About 1% of U.S. landfill space is full of disposable diapers, which take 500 years to decompose. Energy saved from one recycled aluminum...

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Top Ten Most Polluted Places in the World, 2007

Top Ten Most Polluted Places in the World, 2007 This Top Ten list was compiled by the Technical Advisory Board of the Blacksmith Institute, an environmental NGO based in New York. The criteria used in ranking the include the size of the affected population, the severity of the toxins involved, and reliable evidence of health problems associated with the pollution.Sumgayit, Azerbaijan Forty factories that manufacture industrial and agricultural chemicals release 70-120,000 tons of detergents and pesticides into the air every year. Untreated sewage and mercury-contaminated sludge are dumped arbitrarily.   Linfen, China  Severe air and water pollution from the coal, steel, and tar industries.   Tianying, China  One of the largest lead production bases in China with average...

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Human Body Facts

Human Body Facts Body FactsIn one day, a human sheds 10 billion skin flakes. This amounts to approximately two kilograms in a year. Every square inch of the human body has about 19,000,000 skin cells. Approximately 25% of all scald burns to children are from hot tap water and is associated with more deaths than with any other liquid. Forty-one percent of women apply body and hand moisturizer at least three times a day. Every hour one billion cells in the body must be replaced. The world record for the number of body piercing on one individual is 702, which is held by Canadian Brent Moffat. The small intestine in the human body is about 2 inches around, and 22 feet long. The human body makes anywhere from 1 to 3 pints of saliva every 24 hours. The human body has approximately 37,000 miles...

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