Thursday, 15 October 2015

science

General Science :
1. The temperature at which all substances have zero thermal energy - 273 degree celcious.
2. Any substance which when added to a reaction, alters the rate of the reaction but remains chemically unchanged at the end of the process is called - Catalyst.
3. The study of the inter-relations of animals and plants with their environment is called-Ecology.
4. Study of insects is called-Entomology.
5. A unit used to express the focal power of optical lenses-Dioptre.
6. The velocity that a body with less mass must achieve in order to escape from the gravitational attraction of a more massive body is called-Escape Velocity.
7. Laughing gas is chemically known as- Nitrous Oxide.
8. The blood vessels carrying blood from the heart to various parts of the body is called-Artery.
9. The distance travelled by light in one year is called - Light year.
10. An organism which derives its nourishment from another living organism is called-Parasite.
11. Newton's which law states that the rate of change of momentum of a body is directly proportional to the force applied and takes place in the direction in which the force act -Newton's second law of motion.
12. Which is the world's first man-made satellite-Sputnik-I.(4 oct 1957)
13. Which planet is the brightest of all the planets-Venus.
14. Small pieces of solid matter which are found scattered in the inter-planetary space of the solar system are known as-Meteoroids.
15. The largest gland in the body which is dark red in colour is- Liver.
16. Inadequate secretion of Insulin hormone causes which disease -Diabetes.
17. Common cold, Influenza, Chickenpox and Measles are caused due to the attack of Virus or Bacteria - Virus.
18. In which atmospheric layer are the communication satellite located- Ionosphere.
19. The scientific principle behind 'Fibre Optics' is – Total internal reflection of light.
20. Ginger is a stem and not a root, True or False - True (because it has nodes and Internodes).
21. When we wind a watch which energy is stored - Potential Energy.
22. On which phenomena the process of Dialysis used on patient with affected kidneys is Based - Osmosis.
23. When a piece of ice floating in a beaker of water melts, the level of water will rise or fall-Remains the same.
24. Energy stored in a dry cell is - Chemical energy.
25. When a cricketer lowers his hand while catching the ball, it saves him from injury due to - Conservation of momentum.
26. Full form of AIDS is - Acquired Immune Deficiency Syndrome.
27. Chemical technology dealing with the conversion of base metals into gold is - Alchemy.
28. Subtances produced by micro-organism that kill or prevent growth of other micro-organism is called - Antibiotics.
29. Substances which react with acids to form salts is called - Base.
30. The ancient oriental art of growing trees in dwarf form is called - Bonsai.
31. What is the unit of heat - Calorie.
32. The ability of a body to resist tension or compression and to recover its original shape and size when the stress is removed is called - Elasticity.
33. The negatively charged particles which revolve around the nucleus of the atom in certain orbits is called - Electron.
34. The branch of biology dealing with study of Heredity is - Genetics.
35. Kwashiorkor is caused due to the deficiency of - Protein.
36. Optical illusion often witnessed in deserts when the objects on the surface of the earth at
37. The branch of science which deals with study of nature and properties of light is called- Optics.
38. The scale used to measure the magnitudes of earthquakes is called - Richter scale.
39. The heat required to raise the temperature of 1 kg of a substance through one degree celcius is called - Specific heat.
40. The speed greater than the speed of sound is called- Supersonic speed.
41. Volatile substance that incapacitates for a time by powerfully irritating the eyes, provoking tears is called - Tear gas.
42. Who is the inventor of Dynamite - Alfred B. Nobel.
43. Who discovered life in plants - Jagadish Chandra Bose.
44. The unit used to measure loudness of sound is - Decibel.
45. The smallest part of an element that can take part in a chemical reaction is called - Atom.
46. Substances used for destroying or stopping growth of micro-organisms in living tissue is Called -Antiseptic.
47. Water that does not form lather with soap easily is called - Hard water.
48. The lines drawn on maps joining the places having same barometric pressure is called -Isobars.
49. Lymph differs from blood in not having - Red Blood Corpuscles.

50. Universal receivers can receive blood from - Groups O, A, B and AB 

Saturday, 25 April 2015

Free mobile Recharge For Android Mobile

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