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