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  #11  
Old Sunday, October 08, 2006
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Wink Mind if I try ?

Here goes nothing !

Q3 :
1) Pass
2) Seismogrph
3 Microphone
4 Cinnabar
5 Well, ayesha has answered that it is Sphymomanometer, but i personally think that it is the "stethoscope"
6 Hydrogen, since according to some estimates, 86% of human body is composed of water, and it is H2O. "Element is required"
7 Sir Alexander Fleming
8 Neil Armstrong
9 Camel
10 Radiation

Q4 : Well, ican only mention some fat fat points:
Plaster of Paris:
Compound of Calcium.
When hydrated, the form is rigid.
Blesssing for broken bones
Also used for architecture designing(Model deesigning), Sculpures and for filling purposes in different areas.

Bird Flu :
A viral disease of birds.
It is not only effective in birds,but generally is, some viruseshave a strong tendency for mutations. the people who work at poultry farms and shops should be innoculated.
Recent attack in Pakistan
Preventive measures

Gene:
A thread like nuclear structure in not only the nucleus, it is also found in the prokaryotic cells and viruses, the of a living cell
physiological traits determinant.
Some think that it is also reponsible character determination, in humans.
Clonning.
Islamic teachings about it.

Thermistor:
A type of an electrical device/A semiconductor, which regulates the current flow under the influence of heat.
Used in sensitive heat measuring/operative devices e.g thermocouples/ers


Thermostat:
Thermo= Heat, Stat= Statically stable
Its a thermo-electrical device.
works on the principle of thermal expansion.
Used as a temperature regulator in home appliances like refrigerators, ac,and iron.

Q5: already answered, see above.

Q:6
A dam is a storage of water, while a barrage is made to increase the water depth.
Benefits of Dams:
Leverage to agriculture, by making use of the rain water also.
Ensures regulated flow in the streams. So is an agricultural blessing.
Electricity Production is cheaper for a big dam.
By the constructoin of big dams, we get an employment channel for our talented Pakistanis.

Q7:
1) False, becuse pitch is the ear esponse to a sound.
2) False, both are invisible
3) Seriously talking, this is a real tricky one and i would have dropped it.
4) False, it moves through the wire and creates an field around the wire.
5) False,
6) True, the molecules of a metal are closely packed, hense the density is higher.
7) False, the correct name for it is wheatstone bridge.
8) True
9) False, since no lens is used so far to cure a mental disease.
10)True

Q8:
1) Telemeter is used to convey the physical satistics to a distance, while a multimeter is a complex device, having a potentiometer and ammeter.
2) Perimeter is a conceptual term, while the altimeter is a device, for measuring the altitudes.
3) In microscope, the channel of light waves is straigt, while in a periscope, it is bended by the use of a mirror o a prism.
4) Nucleon is a sub-nuclear particle, while a photon is n energy packet.
5) Cusec is a measure of flow, while comet is an object.

Q9: already answered. Yet i think it is the Hydrometer instead of a lactometer.

Q10: Pass

Q11:
a) 1- In unconscious sleep, the tongue droops back due to muscular relaxation.
2- The tongue comes in the way of wir channel and flutters and hits the pallete.

b) 1- Sometimes our unconcious mind takes over.
2- The unconcious is derived by the conscious, thts why we have fewer accidents.

c) 1- Drops his weight froward and uses the gravity effect to get a pull forwards.
2- The weight on the limbs is also lessened, so they get tired a little late then otherwise.

d) 1- Because generally, the drain pipes are round and it is easy to connect through them in this way.
2- The weight is distributed at every angle evenly, So it is easy to lift them off from any corner.

e) 1- The centifugal force experienced by the vehicle is lowered by the raised end, so the vehicle doesnot skitt or goes off from the road.
2- The centripetal force is supplemented by the gravitaional forces from below.

Q12:

Minerals:
These are the ground matters, naturally occuring abundantly in the non-livings also.
examples are sodium, potassium, calcium, phosphorous, iron, sulphur and molybdenum etc.

Vitamins:
These are chemical compounds which are synthesized naturally by living cells.
They are vital for physical functions, but are not primarily required for the basic function of life like metabolism including both, the catabolism and anabolism.

b) For bones, calcium is the major component alonwith the phosphorous. While the absorption of these is vitalised by the vitamin D.

Q13: Answered already, above

Q14: Muller-----Radioactivity (x-ray use to mutinize)
Newton------Gravity
Addison-----Water
Bardeen and Brattin-----Counter semiconductor
Weber Fehner's Law----- Non conductor
Benjamin Franklin-----Lightening conductor
Decibel-------Sound
Dr.Gilbert-----Magnet (Discovered the way to magnetise)
Cavendish------EM Induction
Faraday----Electricity

Q15: Some unanswered questions are here

9) Karakoram range

Any correction is more than welcome !!!

Take care,

Allah Hafiz
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  #12  
Old Sunday, October 08, 2006
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@ sohail shuja
Quote:
Gene:
A thread like nuclear structure in not only the nucleus, it is also found in the prokaryotic cells and viruses, the of a living cell
physiological traits determinant.
Some think that it is also reponsible character determination, in humans.
Well, i think that u are mixing the concept of chromosome with the gene here. A chromosome is a helical structure normally appears as threads. On the other hand, u might have added that it is basically composed of four proteins in different combinations. The proteins are : Adenine, cytosine, guanine and thymine.

@ impossible
Quote:
4) The production of generally identical reproduction is called as Cloning.
Well, i personally think that it is not a general process of reproduction, the more precise reply would be "mitosis", through which, the cells make thier exact copies.

Well, these are the corrections I could suggest wth the very best of my knowledge.

Quote:
8) The temperature of a human body is measured by an instrument known as thermometer.
Well, it would be really nice if u would have answered it as "Clinical Thermometer"

Quote:
(9) NTP Normal Temperature Pressure
Well, here agin, NTP is a vaguer term for "Natural Temperature Pressure", it is usually taken as STP in the scientific descriptions. Since "Network Time Protocol" appears to me a more relative term.
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  #13  
Old Sunday, October 08, 2006
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@yasir

salam
u r right there about MITOSIS.
well done explained very well.
regards
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  #14  
Old Sunday, October 08, 2006
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Quote:
Originally Posted by afrms

@yasir

salam
u r right there about MITOSIS.
well done explained very well.
regards
Wsalaam

Thanks for the appreciation buddy. But i think that Sohail Shuja deserves somewhat a compliment from me for his prolific, though a slightly inaccurate effort.

Well Done Sohail Shuja

Keep it up man
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  #15  
Old Monday, December 04, 2006
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HERE is something from my side
CRO... cathode rays oscillator
Q_14
(1) Geiger Muller Counter --Radioactivity
(2) Newton --Gravitation
(3)Addison ---Electricity
(4) Bardeen and Brattin-- Semiconductor
(5) Weber Fehnerís Law -- non conductor
(6) Benjamin Franklin --Lightening Conductor
(7) Decibel-- Sound
(8) Dr. Gilbert --Magnet
(9) Henry Cavendish--water
(10) Faraday EM induction
Q.7. Which of the following statements are True and which are False: (1 each)
1) Pitch of the dog sound is greater than the pitch of the cat sound.---false
2) Ultraviolet light is visible but infrared light is not visible.--false
3) Earthquakes are the lamps illuminating the structure of the earthís exterior.--false
4) Electricity does not move through the wire but through a field around the wire.--false
5) A guava contains more vitamin C than an orange.--true
6) Sound travels faster in iron than in air.--true
7) Wheat Bridge is the name of an electrical circuit.---true
8) Morphine can cause constipation and lowering of blood pressure.--true
9) A concave lens is used for the correction of the Hyperphobia.--true
10) The nucleic acids are responsible for proteins synthesis in the human body.--true
9. Fill in the blanks: (1 each)
1) The branch of zoology, which deals with the study of insects is called __entmology________
2) The disease _beri beri________is caused by the deficiency of Vitamin B1 (Thiamine).
3) Oil rises in a wick of oil lamp because of a property of matter, called __capillary action______
4) The production of generally identical reproduction is called as ________
5) ___jupiter________ is the fastest planet of the solar system.
6) Mercury metal is ___9______ times heavier than water.
7) Relative density of milk is measured by an instrument known as __lactometer________
8) The temperature of a human body is measured by an instrument known as ___thermometer______
9) Gold and silver are known as _highly conducting________ metals.
10) The amount of ozone in the atmosphere is expressed in ___dobson units_______.
Q.3 Name. (1 each)
1) The alloy consisting of metals copper, zinc and nickel.---german silver
2) The instrument specially designed for recording earthquake waves,
3) The electrical device which converts sound energy into electrical energy.--microphone(mouth piece )
4) The ore of mercury metal.--cyanabar
5) The device with which variation of blood flow can be heard.
6) The element, which is abundantly present in the human body.
7) The scientist who discovered penicillin.
8) The astronaut who first landed on the surface of the moon.
9) The desert mammal, which does not drink water.--kangroo rat
10) The mode of heat transfer from the sun to the earth.--radiation

---- plz correct wrong ones
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  #16  
Old Monday, December 04, 2006
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--concave lens is used for hyperopia..not hyperphobia so 'false'
--for gold and silver coinage metals is the most appropriate answer posted by a member
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  #17  
Old Tuesday, December 05, 2006
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sved berg unit--- time, it is equal to 10 to power -13
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  #18  
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IN QUSTION NUMBER 7, PART 6 OF eds 2006, DO U THINK THAT YOU HAVE FOLLOWED THE LAPLACE RULE, ACCORDING TO WHICH SOUND SPEED IN MEDIUM IS INVERSELY PRPORTIONAL TO SQUARE OF DENSITY SO I THINK IT SHOULD BE FALSE.
WHAT YOU SAY IS AIR MORE DENSE OR IRON SO...? WELL DO TELL
take care Hafiz
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  #19  
Old Wednesday, December 06, 2006
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WELL sba nice query..... here is logical explanation for my answer... this may also be experienced on a railway track practically..
The speed of any wave depends upon the properties of the medium through which the wave is traveling. Typically there are two essential types of properties which effect wave speed - inertial properties and elastic properties. The density of a medium is an example of an inertial property. The greater the inertia (i.e., mass density) of individual particles of the medium, the less responsive they will be to the interactions between neighboring particles and the slower the wave. If all other factors are equal (and seldom is it that simple), a sound wave will travel faster in a less dense material than a more dense material. Thus, a sound wave will travel nearly three times faster in Helium as it will in air; this is mostly due to the lower mass of Helium particles as compared to air particles.

Elastic properties are those properties related to the tendency of a material to either maintain its shape and not deform whenever a force or stress is applied to it. A material such as steel will experience a very small deformation of shape (and dimension) when a stress is applied to it. Steel is a rigid material with a high elasticity. On the other hand, a material such as a rubber band is highly flexible; when a force is applied to stretch the rubber band, it deforms or changes its shape readily. A small stress on the rubber band causes a large deformation. Steel is considered to be a stiff or rigid material, whereas a rubber band is considered a flexible material. At the particle level, a stiff or rigid material is characterized by atoms and/or molecules with strong attractions for each other. When a force is applied in an attempt to stretch or deform the material, its strong particle interactions prevent this deformation and help the material maintain its shape. Rigid materials such as steel are considered to have a high elasticity (elastic modulus is the technical term). The phase of matter has a tremendous impact upon the elastic properties of the medium. In general, solids have the strongest interactions between particles, followed by liquids and then gases. For this reason, longitudinal sound waves travel faster in solids than they do in liquids than they do in gases. Even though the inertial factor may favor gases, the elastic factor has a greater influence on the speed (v) of a wave, thus yielding this general pattern:

vsolids > vliquids > vgases
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  #20  
Old Wednesday, December 06, 2006
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COMPOSITION BY WEIGHT OF HUMAN BODY

Oxygen (65%)
Carbon (18%)
Hydrogen (10%)
Nitrogen (3%)
Calcium (1.5%)
Phosphorus (1.0%)
Potassium (0.35%)
Sulfur (0.25%)
Sodium (0.15%)
Magnesium (0.05%)
Copper, Zinc, Selenium, Molybdenum, Fluorine, Chlorine, Iodine, Manganese, Cobalt, Iron (0.70%)
Lithium, Strontium, Aluminum, Silicon, Lead, Vanadium, Arsenic, Bromine (trace amounts
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