#1
|
||||
|
||||
Every Day Science Paper 2009
FEDERAL PUBLIC SERVICE COMMISSION COMPETITIVE EXAMINATION FOR RECRUITMENT TO POSTS IN BPS-17 UNDER THE FEDERAL GOVERNMENT, 2009 GENERAL KNOWLEDGE PAPER-I (EVERY DAY SCIENCE) TIME ALLOWED: (PART-I) 80 MINUTES MAXIMUM MARKS: 50 (PART-II) MINUTES MAXIMUM MARKS: 50 NOTE: (i) First attempt PART-I (MCQ) on separate Answer Sheet which shall be taken back after 80 minutes. (ii) Overwriting/cutting of the options/answers will not be given credit. -------------------------------------------------------------------------- PART – I (MCQs) (COMPULSORY) Q.1. Select the best option/answer and fill in the appropriate Box on the Answer Sheet: (50) (1) Person with following blood group are considered to be universal recipient. a. A+ b. B+ c. AB+ d. O+ e. None of these (2) Study of life in outer space is known as: a. Endobiology b. Exobiology c. Enterobiology d. Neobiology e. Micro biology (3) The name of the common mineral salt present in seat is: a. Calcium Oxalate b. Potassium Sulphate c. Sodium Chloride d. Iron Sulphate e. None of these (4) Sensitive layer of the eye is: a. Choriods b. Sclerotic c. Retina d. Cornea e. None of these (5) Laughing gas has chemical composition of following two elements. a. Nitrogen + Hydrogen b. Nitrogen + Carbon c. Nitrogen + Oxygen d. Oxygen + Carbon e. None of these (6) Dr. Abdus Salam of Pakistan was one of the contributors of the unification of: a. Electromagnetic force and gravitational force b. Electromagnetic force and weak nuclear force c. Gravitational force and weak nuclear force d. Weak nuclear force and strong nuclear force e. None of these (7) Which triplet in DNA codes for valine: a. CTT b. AGU c. CAT d. AAT e. None of these (8) What is the chance of diabetic baby born to parents both heterozygous normal ? a. Zero b. ¼ c. ½ d. ¾ e. None of these (9) Which of the following is not a part of Darwinism: a. Over production b. Natural selection c. Inheritance for acquired characters d. Competition for survival e. None of these (10) Role of biotechnology in the production of food based on: a. Decomposition b. Respiration c. Digestion d. Fermentation\ e. None of these (11) Which form of drug abuse involves most risk of infection with the HIV (AIDS) virus: a. Cigarette smoking b. Using alcholo c. Injection of heroine d. Taking too much aspirin e. None of these (12) Founder of modern astronomy was: a. Archimedes b. William Gilbert c. Nicolas Copernicus d. Michael Faraday e. None of these (13) The instrument which measures very high temperature is: a. Manometer b. Thermostat c. Chronometer d. Pyrometer e. None of these (14) The science which deals with study of manners and customs of people is: a. Ethnology b. Morphology c. Ethics d. Genetics e. None of these (15) Chemical used to kill rats and mice are: a. Insecticides b. Rodenticides c. Fungicides d. Herbicides e. None of these (16) Dry ice is: a. Methane hydrate b. Liquid Nitrogen c. Solid Carbon dioxide d. Frozen Water e. None of these (17) Chemical name of vinegar is: a. Sodium Nitrate b. Dilute acetic acid c. Chloride of lime d. Calcium e. None of these (18) Defeciency of following vitamin decreases hemoglobin production: a. Biotin b. Thiamine c. Niacin d. Pyridoxine e. None of these (19) Hygrometer is used for measuring the: a. Speed of sound b. Density of milk c. Humidity of air d. Specific gravity of liquids e. None of these (20) Bronze is an alloy of: a. Copper and Zinc b. Tin and Zinc c. Copper and Tin d. Iron and Zinc e. None of these (21) Which of the following is most elastic ? a. Steel b. Rubber c. Glass d. Sponge e. None of these (22) Orbital period of the planet Mercury around the sun is: a. 88 days b. 365 days c. 2 years d. 98 days e. None of these (23) The most splendid and the most magnificient constellation on the sky is: a. Orion b. Columbia c. Canis Major d. Taurus e. None of these (24) “Black holes” refer to: a. Hole occurring in heavenly bodies b. Bright spots on the sun c. Collapsing objects of high density d. Collapsing of low density e. None of these (25) Eugenics is the study of: a. Altering human beings by changing their genetic components b. People of European region c. Different races of mankind d. Genetic of plants e. None of these (26) The position of earth in its orbit, when it is at its greatest distance from the sun causing northern summer is called: a. Aphelion b. Perihelion c. Perigee d. Apogee e. None of these (27) Diamond is a very expensive ornament. It is composed of a single element: a. Carbon b. Gold c. Silver d. Platinum e. None of these (28) Which of the following layers make radio transmission possible? a. Troposphere b. Ionosphere c. Mesosphere d. Stratosphere e. None of these (29) Which of the following explains the reason why there is no total eclipse of the sun? a. Size of the earth in relation to that of moon b. Orbit of moon around earth c. Direction of rotation of earth around sun d. Area of the sun covered by the moon e. None of these (30) Television signals are converted into light signals by: a. Optical fiber b. Transistor c. Decoder d. Photo diode e. None of these (31) Where do most of Asteroids lie? a. In asteroid belt between the orbits of Mars and Jupiter b. In asteroid belt between the orbits of Mars and Venus c. In asteroid belt between the orbits of Jupiter and Venus d. Everywhere in the sky e. None of these (32) The number of spark plugs needed in a diesel engine is: a. 2 b. 3 c. 0 d. 4 e. None of these (33) The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg? a. 4 days b. 12 days c. 16 days d. 8 days e. None of these (34) The term ‘Blue Shift’ is used to indicate: a. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object. b. Turning a star from white to blue c. In future sun would become blue d. Black hole was blue at its start e. None of these (35) Kilowatt-hour is a unit of: a. Power b. Electric Current c. Energy d. Time e. None of these (36) Fuel used in a Fast Breeder Reactor is: a. Uranium Oxide b. Uranium Plutonium carbide c. Uranium Plutonium Oxide d. Uranium thorium Oxide e. None of these (37) Monsoon is caused by: a. Seasonal reversal of winds b. Revolution of earth c. Movement of clouds d. Rise in temperature e. Rain forests (38) Which of the following atmospheric layers help in radio communication? a. Exosphere b. Ionosphere c. Troposphere d. Stratosphere e. Ozone layer (39) A moderator is used in nuclear reactor in order to: a. Accelerate the neutrons b. Slow down the speed of the neutrons c. Increase the number of elections d. Decrease the number of electrons e. None of these (40) Sedimentary rocks are: a. Porous b. Hard c. Rough d. Brittle e. Volcanic (41) Which one of the following is a non-metallic mineral? a. Manganese b. Magnesium c. Gypsum d. Bauxite e. None of these (42) Ozone layer prevents the following radiation from entering the atmosphere: a. Infra-red b. Ultraviolet c. X-rays d. Gamma rays e. None of these (43) The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from: a. Ionosphere b. Troposphere c. Mesosphere d. Stratosphere e. None of these (44) Yeast is used in making bread because it produces: a. Carbon dioxide b. Sugar c. Bacteria d. Oxygen e. None of these (45) Oasis is associated with: a. Glaciers b. Desert c. Islands or Last Island d. Volcanoes e. Fertile land (46) Quartz crystal in quartz watches work on the principle called: a. Photoelectric effect b. Stark effect c. Thermionic effect d. Piezo-electric effect e. None of these (47) The fruits without seed, like banana, are called: a. seedless fruits b. parthenogenesis fruits c. parthenocarpic fruits d. placental fruits e. Organic fruits (48) Animal which captures and readily kills living animals for its food is called: a. Parasite b. Scavenger c. Predator – not or moderator d. Mammal e. None of these (49) In a railway track, two rails are joined end to end with a gap tin between them because: a. Steel can be saved b. Accidents due to contraction in winter can be avoided c. Air gaps are necessary for bearing the weight of running train d. Accidents due to expansion in summer can be avoided e. All of these (50) Name the famous book of Ibn-Sina in which he discussed human physiology and medicine: a. Al-Qanoon b. Al-Masudi c. New Renaissance d. Tadhkira e. None of these PART – II (Subjective) NOTE: (i) Attempt ONLY FIVE questions from PART-II. All questions carry EQUAL marks. (ii)Extra attempt of any question or any part of the attempted questions will not be considered. Q.2. Write short note on the following by giving their exact life span and contribution to the field of science (Accurate facts will be appreciated) (5x2) (a) Umer Al Khayam (b) Zakariya Al Razi Q.3. Differentiate between ANY FIVE of the following pairs. (2x5) (a) Umbra and Penumbra (b) Heavy water and hard water (c) Smog and Smoke (d) Myopia and Hypropia (e) Lava and Magma (f) Periscope and perimeter (g) X-rays and Gamma rays Q.4. Sun is glorious star in our sky. Write down its characteristics with reference to the following date: (a) Distance from earth (b) Mean distance from center of galaxy (c) Velocity around centre of galaxy (d) Revolution period around centre of galaxy (e) Equatorial diameter (f) Rotation period at the equator (g) Core temperature (h) Solar wind (i) The lovely Diamond Ring effect (j) Future of sun Q.5. Write briefly (not more than three to four senetences) about ANY FIVE of the following: (2x5) (a)Allotropy (b) Nebula (c) Enrichment of Uranium (d) Aqua Regia (e) Greenhouse effect (f) Igneous rocks Q.6. (a) Define GENETIC ENGINEERING. In how many ways Genetic Engineering can be applied in different fields of life? Does it benefit society ? Discuss. (1+3+2) b. What do the following abbreviations stand for? (1/2 each) i. SONAR ii. CNS iii. PTFE iv. LDL v. SARS vi. GUT vii. BASIC viii. BTU Q.7. (a) What are MINERALS? Discuss ANY TWO physical properties thereof. Also mention the names of four precious minerals of high commercial value. (b) Define the following: (1 each) (a) Amphibion (b) Synchronous satellite (c) Big Dipper (d) Fermentation (e) Millennium Bug Q.8. (a) Define RECEPTORS in man. Name different receptor organs in human body. Also discuss ANY TWO of them briefly. (b). Give Scientific reasons of the following: (1 each) i. The dogs pant, the birds open their mouth and the elephants move rapidly their ears. ii. The manholes covers are generally round. iii. A geostationary satellite appears standstill to a viewer on the equator of earth. iv. We never see birds urinating. v. Pasteurized milk has more nourishment than the ordinary boiled milk. Q.9. (a) Highlight the similarities and differences between animals and plants. (3+3) (b) Write short note on ANY TWO of the following. (2 each) (i) Teleprinter (ii) Dengue Virus (iii) Vacuum Cleaner Good Luck
|
The Following 26 Users Say Thank You to Xeric For This Useful Post: | ||
Abdul Hadi (Wednesday, May 06, 2009), ALI786 (Thursday, October 22, 2009), Amreen (Saturday, October 06, 2012), amubarak (Thursday, April 30, 2009), aneeqawaheed (Wednesday, July 24, 2013), ashhad (Saturday, February 06, 2010), Asifr (Wednesday, July 29, 2009), askfriends (Monday, February 14, 2011), Ayesha Mahmood (Monday, January 11, 2010), Azhaan (Sunday, June 14, 2009), Bilal Ur Rehman (Saturday, March 19, 2011), Faheem Sattar (Wednesday, September 26, 2012), frazamjad (Tuesday, August 25, 2009), Greeko (Monday, August 24, 2009), happy ending (Thursday, April 30, 2009), mariyah ahmed (Saturday, May 02, 2009), Viceroy (Friday, May 01, 2009), Artemis (Monday, June 01, 2009), Mumtaz Hayat Maneka (Friday, May 01, 2009), Omer (Tuesday, May 05, 2009), propofol (Sunday, December 06, 2009), pure (Tuesday, June 16, 2009), sajid iqbal khan (Thursday, August 05, 2010), Show Stealer (Tuesday, August 11, 2009), sparkofighter (Thursday, April 30, 2009), sunlight (Saturday, May 02, 2009) |
#2
|
|||
|
|||
Partial Solution PART – I (MCQs) (COMPULSORY) Q.1. Select the best option/answer and fill in the appropriate Box on the Answer Sheet: (50) (1) Person with following blood group are considered to be universal recipient. a. A+ b. B+ c. AB+ d. O+ e. None of these The AB+ group is considered to be universal recipient (2) Study of life in outer space is known as: a. Endobiology b. Exobiology c. Enterobiology d. Neobiology e. Micro biology (3) The name of the common mineral salt present in seat is: a. Calcium Oxalate b. Potassium Sulphate c. Sodium Chloride d. Iron Sulphate e. None of these (4) Sensitive layer of the eye is: a. Choriods b. Sclerotic c. Retina d. Cornea e. None of these (5) Laughing gas has chemical composition of following two elements. a. Nitrogen + Hydrogen b. Nitrogen + Carbon c. Nitrogen + Oxygen d. Oxygen + Carbon e. None of these (6) Dr. Abdus Salam of Pakistan was one of the contributors of the unification of: a. Electromagnetic force and gravitational force b. Electromagnetic force and weak nuclear force c. Gravitational force and weak nuclear force d. Weak nuclear force and strong nuclear force e. None of these (7) Which triplet in DNA codes for valine: a. CTT b. AGU c. CAT d. AAT e. None of these (8) What is the chance of diabetic baby born to parents both heterozygous normal ? a. Zero b. ¼ c. ½ d. ¾ e. None of these (9) Which of the following is not a part of Darwinism: a. Over production b. Natural selection c. Inheritance for acquired characters d. Competition for survival e. None of these (10) Role of biotechnology in the production of food based on: a. Decomposition b. Respiration c. Digestion d. Fermentation e. None of these (11) Which form of drug abuse involves most risk of infection with the HIV (AIDS) virus: a. Cigarette smoking b. Using alcholo c. Injection of heroine d. Taking too much aspirin e. None of these (12) Founder of modern astronomy was: a. Archimedes b. William Gilbert c. Nicolas Copernicus d. Michael Faraday e. None of these (13) The instrument which measures very high temperature is: a. Manometer b. Thermostat c. Chronometer d. Pyrometer e. None of these (14) The science which deals with study of manners and customs of people is: a. Ethnology (branch of anthropology) b. Morphology c. Ethics d. Genetics e. None of these (15) Chemical used to kill rats and mice are: a. Insecticides b. Rodenticides c. Fungicides d. Herbicides e. None of these (16) Dry ice is: a. Methane hydrate b. Liquid Nitrogen c. Solid Carbon dioxide d. Frozen Water e. None of these (17) Chemical name of vinegar is: a. Sodium Nitrate b. Dilute acetic acid c. Chloride of lime d. Calcium e. None of these (18) Defeciency of following vitamin decreases hemoglobin production: a. Biotin b. Thiamine c. Niacin d. Pyridoxine (known as Vitamin B6, causes anemia i.e. deficiency of hemoglobin) e. None of these (19) Hygrometer is used for measuring the: a. Speed of sound b. Density of milk c. Humidity of air d. Specific gravity of liquids e. None of these (20) Bronze is an alloy of: a. Copper and Zinc b. Tin and Zinc c. Copper and Tin d. Iron and Zinc e. None of these (21) Which of the following is most elastic ? a. Steel b. Rubber c. Glass d. Sponge e. None of these (22) Orbital period of the planet Mercury around the sun is: a. 88 days b. 365 days c. 2 years d. 98 days e. None of these (23) The most splendid and the most magnificient constellation on the sky is: a. Orion b. Columbia c. Canis Major d. Taurus e. None of these (24) “Black holes” refer to: a. Hole occurring in heavenly bodies b. Bright spots on the sun c. Collapsing objects of high density d. Collapsing of low density e. None of these (25) Eugenics is the study of: a. Altering human beings by changing their genetic components (close to the actual definition) b. People of European region c. Different races of mankind d. Genetic of plants e. None of these Eugenics: study of the possibility of racial improvement through selective breeding and other methods (26) The position of earth in its orbit, when it is at its greatest distance from the sun causing northern summer is called: a. Aphelion b. Perihelion c. Perigee d. Apogee e. None of these (27) Diamond is a very expensive ornament. It is composed of a single element: a. Carbon b. Gold c. Silver d. Platinum e. None of these (28) Which of the following layers make radio transmission possible? a. Troposphere b. Ionosphere c. Mesosphere d. Stratosphere e. None of these (29) Which of the following explains the reason why there is no total eclipse of the sun? a. Size of the earth in relation to that of moon b. Orbit of moon around earth c. Direction of rotation of earth around sun d. Area of the sun covered by the moon e. None of these (30) Television signals are converted into light signals by: a. Optical fiber b. Transistor c. Decoder d. Photo diode e. None of these (31) Where do most of Asteroids lie? a. In asteroid belt between the orbits of Mars and Jupiter b. In asteroid belt between the orbits of Mars and Venus c. In asteroid belt between the orbits of Jupiter and Venus d. Everywhere in the sky e. None of these (32) The number of spark plugs needed in a diesel engine is: a. 2 b. 3 c. 0 d. 4 e. None of these (33) The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg? a. 4 days b. 12 days c. 16 days d. 8 days e. None of these (34) The term ‘Blue Shift’ is used to indicate: a. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object. b. Turning a star from white to blue c. In future sun would become blue d. Black hole was blue at its start e. None of these The opposite is the famous red shift which indicated the universe is expanding away from us. (35) Kilowatt-hour is a unit of: a. Power b. Electric Current c. Energy d. Time e. None of these (36) Fuel used in a Fast Breeder Reactor is: a. Uranium Oxide b. Uranium Plutonium carbide c. Uranium Plutonium Oxide d. Uranium thorium Oxide e. None of these FBRs usually use a mixed oxide fuel core of up to 20% plutonium dioxide (PuO2) and at least 80% uranium dioxide (UO2). (37) Monsoon is caused by: a. Seasonal reversal of winds b. Revolution of earth c. Movement of clouds d. Rise in temperature e. Rain forests (38) Which of the following atmospheric layers help in radio communication? a. Exosphere b. Ionosphere c. Troposphere d. Stratosphere e. Ozone layer (39) A moderator is used in nuclear reactor in order to: a. Accelerate the neutrons b. Slow down the speed of the neutrons c. Increase the number of elections d. Decrease the number of electrons e. None of these (40) Sedimentary rocks are: a. Porous b. Hard c. Rough d. Brittle e. Volcanic (41) Which one of the following is a non-metallic mineral? a. Manganese b. Magnesium c. Gypsum d. Bauxite e. None of these (42) Ozone layer prevents the following radiation from entering the atmosphere: a. Infra-red b. Ultraviolet c. X-rays d. Gamma rays e. None of these (43) The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from: a. Ionosphere b. Troposphere c. Mesosphere d. Stratosphere e. None of these Radiations are originally from Magnetosphere which collide with the atoms and molecules in the upper atmosphere,however, Aurora Borealis occurs in the ionosphere (44) Yeast is used in making bread because it produces: a. Carbon dioxide (not sure if this is the reason but yeast does produce carbon dioxide) b. Sugar c. Bacteria d. Oxygen e. None of these (45) Oasis is associated with: a. Glaciers b. Desert c. Islands or Last Island d. Volcanoes e. Fertile land (46) Quartz crystal in quartz watches work on the principle called: a. Photoelectric effect b. Stark effect c. Thermionic effect d. Piezo-electric effect e. None of these Piezo-electric effect electric polarization produced in certain crystals by the application of mechanical stress. (47) The fruits without seed, like banana, are called: a. seedless fruits b. parthenogenesis fruits c. parthenocarpic fruits d. placental fruits e. Organic fruits parthenocarpy (literally meaning virgin fruit) is the natural or artificially induced production of fruit without fertilization of ovules. The fruit is therefore seedless (48) Animal which captures and readily kills living animals for its food is called: a. Parasite b. Scavenger c. Predator – not our moderator d. Mammal e. None of these (49) In a railway track, two rails are joined end to end with a gap tin between them because: a. Steel can be saved b. Accidents due to contraction in winter can be avoided c. Air gaps are necessary for bearing the weight of running train d. Accidents due to expansion in summer can be avoided e. All of these (50) Name the famous book of Ibn-Sina in which he discussed human physiology and medicine: a. Al-Qanoon b. Al-Masudi c. New Renaissance d. Tadhkira e. None of these (I think it was "The Canon of Medicine") PART – II (Subjective) Q.3. Differentiate between ANY FIVE of the following pairs. (2x5) (a) Umbra and Penumbra Umbra - area of the shadow of an eclipse, dark center of a sunspot Penumbra - partly lighted area around any shadow (b) Heavy water and hard water Heavy Water - water with a higher average molecular weight than ordinary water, water used for cooling the core of an atomic reactor Hard Water - water containing a high concentration of minerals and calcium (c) Smog and Smoke Smog - mixture of smoke and fog Smoke - visible vapor given off by burning material; (d) Myopia and Hypropia Myopia - nearsightedness, condition of the eyes in which objects that are far away cannot be seen clearly (Ophthalmology); lack of insight and forethought Hyperopia - far-sightedness, ability to see distant objects more clearly than near ones (e) Lava and Magma Lava - molten rock expelled from a volcano; solidified volcanic rock Magma - molten rock beneath the earth's crust from which igneous rocks are formed (Geology) (f) Periscope and perimeter Periscope - optical scope that allows one to see objects that are located above one's line of sight perimeter - outer boundary of a figure or area; total length of the outer boundary (g) X-rays and Gamma rays X-Rays - High energy electromagnetic radiation of wavelengths in the range 10 to 0.1 nanometres. X-rays are extra-nuclear and have two sources: (1). A characteristic (e.g.K- or L-) X-ray photon is created and emitted when an electron drops down orbits to fill a vacancy in an innermost shell. 2). A bremsstrahlung photon is produced when a high speed positive or negative electron decelerates when passing through the electric field in the close vicinity of an atomic nucleus Gamma Rays - The wavelength of gamma rays is typically less than 10-12 metres. They differ from X-rays in that they originate in the nucleus of atoms. A gamma ray is a photon, i.e. a discrete packet of many waves Q.4. Sun is glorious star in our sky. Write down its characteristics with reference to the following date: (a) Distance from earth 149,600,000 kilometers, or 92,960,000 miles (b) Mean distance from center of galaxy 26,000 light-years (c) Velocity around centre of galaxy 251 km/s (d) Revolution period around centre of galaxy 225–250 million years (one Galactic year). (e) Equatorial diameter 6.955 × 10 power 8 m This is the equatorial radius, the diameter wud be the double of that (f) Rotation period at the equator 25.05 days (g) Core temperature 15.7 × 10 power 6 K (h) Solar wind A steady stream of charged particles that boil off the sun's outer atmosphere and which stream away along magnetic field lines which lead into the interplanetary medium. It is composed of charged particles such as protons , electrons and helium nuclei. (i) The lovely Diamond Ring effect large gush of light that shows up a few seconds before and after totality during a solar eclipse (caused by the last bit of sunlight that shines through valleys on the edge of the moon); (j) Future of sun The Sun does not have enough mass to explode as a supernova. Instead, in about 5 billion years, it will enter a red giant phase, its outer layers expanding as the hydrogen fuel in the core is consumed and the core contracts and heats up. Helium fusion will begin when the core temperature reaches around 100 million kelvins and will produce carbon, entering the asymptotic giant branch phase Q.5. Write briefly (not more than three to four senetences) about ANY FIVE of the following: (2x5) (a)Allotropy existence of a chemical element in two or more different forms For example, the element carbon has two common allotropes: diamond, where the carbon atoms are bonded together in a tetrahedral lattice arrangement, and graphite, where the carbon atoms are bonded together in sheets of a hexagonal lattice. (b) Nebula an interstellar cloud of dust, hydrogen gas and plasma. It is the first stage of a star's cycle. Originally nebula was a general name for any extended astronomical object, including galaxies beyond the Milky Way (some examples of the older usage survive; for example, the Andromeda Galaxy was referred to as the Andromeda Nebula before galaxies were discovered by Edwin Hubble). Nebulae often form star-forming regions, such as in the Eagle Nebula (c) Enrichment of Uranium Enrichment of Uranium corresponds to percent composition of uranium-235 being increased through the process of isotope separation. Natural uranium is 99.284% U-238 isotope, with U-235 only constituting about 0.711 % of its weight. However, U-235 is the only isotope existing in nature (in any appreciable amount) that is fissionable by thermal neutrons. (d) Aqua Regia Aqua regia (Latin for "royal water") is a highly corrosive, fuming yellow or red solution. The mixture is formed by freshly mixing concentrated nitric acid and concentrated hydrochloric acid, usually in a volumetric ratio of one to three respectively. It is one of the few reagents that dissolves gold and platinum. It was so named because it can dissolve the so-called royal, or noble metals, although tantalum, iridium, and a few other metals are able to withstand it. (e) Greenhouse effect The effect produced as greenhouse gases allow incoming solar radiation to pass through the Earth's atmosphere, but prevent part of the outgoing infrared radiation from the Earth's surface and lower atmosphere from escaping into outer space. This process occurs naturally and has kept the Earth's temperature about 59 degrees F warmer than it would otherwise be. Current life on Earth could not be sustained without the natural greenhouse effect. (f) Igneous rocks rocks formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks. This magma can be derived from partial melts of pre-existing rocks in either the Earth's mantle or crust. Typically, the melting is caused by one or more of the following processes — an increase in temperature, a decrease in pressure, or a change in composition. Over 700 types of igneous rocks have been described, most of them formed beneath the surface of the Earth's crust. Q.6.(b) What do the following abbreviations stand for? (1/2 each) i. SONAR SOund NAvigation and Ranging ii. CNS Central Nervous System iii. PTFE polytetrafluoroethylene. iv. LDL low-density lipoprotein. v. SARS Severe Acute Respiratory Syndrome vi. GUT Grand unified theory vii. BASIC Beginner's All purpose Symbolic Instruction Code viii. BTU British Thermal Unit Q.7 (b) Define the following: (1 each) (a) Amphibion cold-blooded vertebrate animal able to live both on land and water (b) Synchronous satellite A satellite in a synchronous orbit A synchronous orbit is one in which an orbiting object has a period equal to the average rotational period of the body being orbited. (c) Big Dipper group of seven stars (in the constellation Ursa Major) (d) Fermentation chemical conversion of organic compounds by means of enzymes; agitation, unrest (e) Millennium Bug an inability in older computing software to deal correctly with dates of 1 January 2000 or later. Q.8. (a) Define RECEPTORS in man. Name different receptor organs in human body. Also discuss ANY TWO of them briefly. I think it is about sensory receptors In a sensory system, a sensory receptor is a sensory nerve ending that recognizes a stimulus in the internal or external environment of an organism. Following are the different sensory receptors
i. The dogs pant, the birds open their mouth and the elephants move rapidly their ears. I think all of these do not sweat, they use the above mentioned mechanisms to cool themselves ii. The manholes covers are generally round. It is impossible to drop a round lid into a smaller round hole. It is because round is the only shape that if turned or flipped over, it still retains the same length across its center. If you used a square, rectangle, triangle, hexagon or any other shaped lid, it could be rotated and fall into the hole. Other reasons A round cover can be moved by rolling it on its edge. A round cover contains less metal than a same-sized cover of any other shape. iii. A geostationary satellite appears standstill to a viewer on the equator of earth. Because these satellites are in the geosynchronous orbit (an orbit around the Earth with an orbital period matching the Earth's sidereal rotation period) Geostationary orbit is a type of geosynchronous orbit that is directly above the equator iv. We never see birds urinating. Birds do not have a urinary bladder or external urethral opening and uric acid is excreted along with feces as a semisolid waste v. Pasteurized milk has more noureishment than the ordinary boild milk. ?? Please Note I have only attempted questions with more of an objective nature Most of the objectives that I have attempted are straight from memory and thus there may be some errors Various sources have been used in the subjective part of the solution Corrections are more than welcomed
__________________
When you have to shoot, shoot. Don't talk. ~ The Good, The Bad, and the Ugly Last edited by Princess Royal; Monday, December 14, 2009 at 07:34 PM. |
The Following 18 Users Say Thank You to Viceroy For This Useful Post: | ||
aftabmumtaz (Wednesday, August 26, 2009), Ayesha Mahmood (Monday, January 11, 2010), Azhaan (Sunday, June 14, 2009), Bilal Ur Rehman (Saturday, March 19, 2011), dr.atifrana (Friday, May 01, 2009), Fading Glimpse (Thursday, March 04, 2010), fayaz.dr (Tuesday, December 15, 2009), happy ending (Friday, May 01, 2009), hasnom (Tuesday, October 20, 2009), Kamran (Friday, May 01, 2009), Nonchalant (Monday, June 08, 2009), propofol (Sunday, December 06, 2009), pure (Tuesday, June 16, 2009), Sheetal Harris (Thursday, August 20, 2009), sunlight (Saturday, May 02, 2009), Waseemtabish (Sunday, November 01, 2009) |
#3
|
||||
|
||||
Dear i think the universal receient is O+....its according to my thinking can any body confirm it
__________________
Nicepunjabian |
#4
|
||||
|
||||
@ nicepunjabian
Quote:
@ Mohsin bhai, Quote:
Regds |
#5
|
|||
|
|||
Quote:
however the blood group O- is considered as the universal donor The universal recipient is the group AB. This is because both A and B antigens are present on the RBCs and are both self antigens, hence they can receive blood from all groups and are universal recipient. @ Kamran well brother I was not very sure so hopefully you are right .... can't really say anything
__________________
When you have to shoot, shoot. Don't talk. ~ The Good, The Bad, and the Ugly |
The Following 2 Users Say Thank You to Viceroy For This Useful Post: | ||
sunlight (Saturday, May 02, 2009) |
#6
|
|||
|
|||
v. Pasteurized milk has more noureishment than the ordinary boild milk.
"even though normal boiled milk retains some enzymes and vitamins yet it has the potential of disease causing bacteria in it .On the other hand pasteurized milk goes under certain process that destroys disease causing bacteria .So thats y Pasteurized milk is better in nourishment than ordinary milk . "
__________________
"You were born an original. Don't die a copy." John Mason |
The Following 2 Users Say Thank You to happy ending For This Useful Post: | ||
Viceroy (Friday, May 01, 2009) |
#7
|
||||
|
||||
Quote:
O+ has anti A and anti B antibodies. O_ can only recieve blood from O_ and not from even O +. O_ is a univer.donner.O+ can be given to A+, B+, AB+, O+ O_ can be given to A+, B+, AB+, O+, O_, A_,B_ ,AB_ AB_ can recieve from A_, B_, AB_, O_ AB+ can recieve from A_, B_, AB_, O_, O+, A+, B+, AB+ so AB+ is Univ.recepient 3) The name of the common mineral salt present in seat is: a. Calcium Oxalate b. Potassium Sulphate c. Sodium Chlorided. Iron Sulphate e. None of these 11) Which form of drug abuse involves most risk of infection with the HIV (AIDS) virus: a. Cigarette smoking b. Using alcholo c. Injection of heroined. Taking too much aspirin e. None of these 29) Which of the following explains the reason why there is no total eclipse of the sun? a. Size of the earth in relation to that of moon b. Orbit of moon around earth c. Direction of rotation of earth around sun d. Area of the sun covered by the moon e. None of these |
The Following 6 Users Say Thank You to dr.atifrana For This Useful Post: | ||
Asifr (Wednesday, July 29, 2009), Ayesha Mahmood (Monday, January 11, 2010), fayaz.dr (Thursday, December 24, 2009), happy ending (Friday, May 01, 2009), hasnom (Tuesday, October 20, 2009), pure (Tuesday, June 16, 2009) |
#8
|
||||
|
||||
css tips
The answer to question 49 is expansion due to summer can be avoided because expansion has more effect than contraction.
|
The Following 4 Users Say Thank You to lala1447 For This Useful Post: | ||
Asifr (Wednesday, July 29, 2009), fayaz.dr (Thursday, December 24, 2009), happy ending (Friday, May 01, 2009), usmanahmad (Friday, July 17, 2009) |
#9
|
||||
|
||||
tips
The answer to ibn Sina book is Al Qanun(cannon is translated in Arabic as Qanun) full name of bookKitab al Qanoun fi al Toubb
|
The Following 3 Users Say Thank You to lala1447 For This Useful Post: | ||
happy ending (Friday, May 01, 2009), Viceroy (Friday, May 01, 2009), usmanahmad (Friday, July 17, 2009) |
#10
|
|||
|
|||
AB : universal recipient
Blood type AB is the universal recipient because individuals who have blood type AB does not have the antibodies. They do not have the anti-A or Anti-B antibodies. They can receive all types of blood types: A,B,O,AB
I'm sure you've heard that a universal blood donor can give blood to anyone, and that a universal recipient can receive blood from anyone. It's not true when "Whole blood" from a donor is given. Whole blood consists of red cells, white cells, platelets and other components floating in plasma. Therefore, whole blood can only be given to someone who has the exact same blood type. Giving whole blood from a "universal donor" to someone of a different blood type would cause a transfusion reaction and most likely result in death. What the universal donor and recipient rule refers to is "packed red cells." Current blood bank processes sort these components into their own separate bags for use when needed. The packed red cells, not whole blood, are the component that is usually administered during a blood transfusion. source : http://wiki.answers.com/Q/Why_is_blo...rsal_recipient
__________________
"You were born an original. Don't die a copy." John Mason |
The Following 6 Users Say Thank You to happy ending For This Useful Post: | ||
believer.hamid@gmail.com (Saturday, May 02, 2009), cuckoo (Tuesday, December 01, 2009), Viceroy (Friday, May 01, 2009), sunlight (Saturday, May 02, 2009), wasifjahangir (Saturday, November 07, 2009), zooni (Tuesday, May 05, 2009) |
Thread Tools | Search this Thread |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Drone War (Pakistan History) | Hajirahat | Current Affairs Notes | 9 | Tuesday, July 29, 2014 02:17 PM |
Principles of Political Science | Xeric | Political Science | 8 | Friday, December 02, 2011 12:19 AM |
Philosophy of Science | A Rehman Pal | Philosophy | 0 | Sunday, March 18, 2007 03:42 PM |