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  #41  
Old Monday, March 26, 2012
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3. The minimum speed of a Pentium II computer is :
a. 133 Mhz b. 233 Mhz c. 333 Mhz d. 433 Mhz

right Answer is b. 233 Mhz
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  #42  
Old Thursday, December 13, 2012
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fastest planet is Jupiter not Murecry
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d) Photosynthesis and respiration:

Photosynthesis: process by which green plants and certain other organisms use the energy of light to convert carbon dioxide and water into the simple sugar glucose.An extremely important byproduct of photosynthesis is oxygen, on which most organisms depend.

Respiration: Here we take oxygen and exhale carbon dioxide where as in plants in day time co2 is taken and o2 is given off.



in that answer... respiration and photosythesis both occur in plants together... but resporation become dominant in night due to absence of photosynthesis.... in photosynthesis CO2 is taken and O2 is removed while in respiration always O2 is taken and CO2 is released.
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  #44  
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Quote:
Originally Posted by Xeric View Post

Every Day Science Paper - 1992
Partial Solution





4. Attempt any five of the following


(a) The solar system has:


(i) 9 planets
(ii) 12 planets
(iii) 16 planets

Ans. Now there are 8 major and several dwarf planets.


(b) The science of study of old age is called:

(i) Gerontology
(ii) Carcinology
(iii) Nephrology

Ans. (i) Gerontology


(c) The instrument used for measuring the velocity of air:

(i) Barometer
(ii) Anemometer
(iii) Potometer

Ans. (ii) Anemometer


(d) The science which deals with the bird is called:

(i) Entomology
(ii) Ornithology
(iii) Herpetology

Ans. (ii) Ornithology


(e) The function of the thermostat in a refrigerator is:

(i) To increase the freezing point
(ii) To Lower the temperature
(iii) To maintain the temperature

Ans. (iii) To maintain the temperature


(f) Blotting paper absorbs ink because:

(i) It has a chemical affinity for ink
(ii) The action of capillary
(iii) The force of gravitation acts between blotting paper and ink.

Ans. (ii) The action of capillary


(g) Mirage is an example of:

(i) Reflection of light
(ii) Refraction and internal reflection of light
(iii) Polarization of light

Ans. (i) Reflection of light



6. Where are the following animals found? Answer any five.

a) Kangaroo
b) Kiwi
c) Llama
d) Ibex
e) Panda
f) Snow Leopard
g) Penguin

Answer:


a) Australia
b) New Zealand
c) South America
d) Himalaya, Abyssinia
e) North India
f) Central Asian Mountains
g) Cooler waters and along the coastlines in Southern Hemisphere


7. Name the sources of any five of the following biological products.

a) Musk
b) Codeine
c) Cocaine
d) Quinine
e) Colchicines
f) Digilain

Answer:


a) Abdominal gland of male musk deer
b) From opium
c) Cocaine
d) Bark of cinchona
e) From colchicum
f) Leaves from the purple foxglove; a plant


9. Differentiate between any five of the following:

a) DNA and RNA
b) Alloy and Amalgam
c) Blood and Lymph
d) Stars and Planets
e) Gas and Vapour
f) Brass and Bronze


Answers:


a) DNA & RNA

RNA:

It is single stranded molecule
Contains Ribose sugar
contains adanine, guanine ,cytosine, & uracil bases
generally located in cytoplasm
is of three kinds

DNA:


Double stranded
deoxyribose
contains adanine, guanine cytosine and thymine bases
is of one kind


b) Alloy and Amalgam:


Alloy:


Substance composed of two or more metals. Alloys, like pure metals, possess metallic luster and conduct heat and electricity well, although not generally as well as do the pure metals of which they are formed. Compounds that contain both a metal or metals and certain nonmetals, particularly those containing carbon, are also called alloys. The most important of these is steel. Simple carbon steels consist of about 0.5 percent manganese and up to 0.8 percent carbon, with the remaining material being iron.

Amalgam:


Amalgam is an alloy of mercury with one or more metals.


d) Stars and Planets:


Stars:


Heavenly bodies that shine by its own light and remains relatively fixed in position among the other bodies in the universe.light and energy is generated in a star by the conversion of hydrogen into helium.

Planet:


Opaque bodies revolving around the sun in its own orbit & also rotating on its own axis, shines by reflection of the light of other stars( such as sun).


e) Gas and Vapour:


The terms vapor and gas can be used interchangeably, although in practice, vapor is used for a substance that is normally in liquid or solid state, such as water, benzene, and iodine. It has been proposed that the use of the term vapor be restricted to a gaseous substance below its critical point; the temperature at which it may be liquefied by the application of sufficient pressure) and the term gas should be used above the critical temperature when the existence of the substance in the liquid or solid state is impossible. This usage is essentially arbitrary because all gaseous substances follow a similar behavior both above and below the critical point.


f) Brass and Bronze:

Brass: an alloy of copper and zinc
Bronze: an alloy of copper and tin


13. Name two diseases caused by following groups of micro-organisms.

a) Bacteria
b) Viruses
c) Protozoa
d) Fungi

Answers:


a) Tuberculosis, Typhoid, Cholera
b) Poliomyelitis, Influenza
c) Sleeping sickness, Amoebic dysentery
d) Ringworm, Actinomycosis


~~~~~~~~******~~~~~~~~~
The panda, also known as the giant panda to distinguish it from the unrelated red panda, is a bear native to central-western and south western China

not india, please.
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  #45  
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Who proposed the concept “All motion is relative”?
a. Albert Einstein
b. John Kepler
c. Galileo Galilie
d. None

2. The field of specialization of famous Muslim scientist Abu Usman Aljahiz was:
a. Botany
b. Zoology
c. Astronomy
d. None

3. Albatros is:
a. A sea bird
b. A beetle
c. A fruit
d. None

4. The sunlight can reach a depth of …….. meters in the ocean:
a. 100
b. 80
c. 120
d. None

5. The biggest planet in our solar system is:
a. Venus
b. Pluto
c. Jupiter
d. None

6. The biggest species of the cat family is:
a. Tiger
b. Lion
c. Leopard
d. None

7. Which group of animals has heterogametic females?
a. Domestic fowl
b. Earthworm
c. Rabbit
d. None

8. The dominant phase of life cycle in these organism is haploid:
a. Mosses
b. Bacteria
c. Protoza
d. None

9. The atmosphere of moon consists of:
a. 90% Hydrogen, 10% Nitrogen
b. 80%Nitrogen, 20% Hydrogen
c. 60% Nitrogen, 40%inert gases
d. None

10. The chemical name of quartz is:
a. Silicon Dioxide
b. Stannous Oxide
c. Aluminium Oxide
d. None

11. Which month of calendar year can lack a new moon?
a. December
b. February
c. May
d. None

12. Deuterium differs from Hydrogen in having:
a. Different atomic number but same atomic weight
b. Different atomic number and different atomic weight
c. Same atomic number and different atomic weight
d. None

13. One of the following is a water soluble vitamin:
a. Vitamin A
b. Vitamin D
c. Vitamin K
d. Noneb and c

14. Coulomb is the scientific unit to measure:
a. Velocity
b. Temperature
c. Mass
d. Nonecharge

15. Equator passes through one of these countries:
a. Saudi Arabia
b. Italy
c. Japan
d. None

16. Anti Diuretic hormone is secreted by one of the following glands:
a. Pituitary
b. Pancreas
c. Thyroid
d. None

17. Basha Dam is to be constructed on:
a. River Sutlaj
b. River Jhelum
c. River Chenab
d. Noneindus

18. UV light falls in the category of:
a. Ionizing Radiations
b. Non Ionizing Radiation
c. Visible light
d. None

19. The earth’s ……………….is divided into 15 major plates of various sizes:
a. Mesosphere
b. Stratosphere
c. Lithosphere
d. None

20. One of these scientists formulated basic laws of Geometry:
a. Pythagorus
b. Archimedes
c. Aristotle
d. None

21. Phosphorus is an essential component of one of the following biological molecules:
a. Amino acids
b. Nucleic acids
c. Carbohydrates
d. None

22. He was the first scientist to prove that plants move around the sun:
a. Archimedes
b. Galileo Galilei
c. John Kepler
d. None (copurnicus i think, but galileo is probably the one who proved it)

23. Atom is made up of ........... different kinds of subatomic particles:
a. Three
b. Two
c. Four
d. None

24. Uranium is best used as nuclear fuel in one of the following forms:
a. U 235
b. U 237
c. U 238
d. None

25. The alpha particles are compact clusters of:
a. Electron and Proton
b. Two Protons and two Neutrons
c. Three protons and three Neutrons
d. None

26. The Beta particles are fast moving
a. Protons
b. Electrons
c. Neutrons
d. None

27. One of the following countries produces maximum energy from atomic reactors:
a. France (86% of country's energy production)
b. USA (overall by capacity)
c. UK
d. none

28. The unit to measure the quantity of Ozone in atmosphere is
a. Dobson
b. Dalton
c. Cuolomb
d. none

29. The severity of 2005 earthquake in Pakistan on Richter scale was
a. 6.9
b. 7.6
c. 7.1
d. none

30. Geiger-Muller counter is used to detect:
a. Protons
b. Neutrons
c. Photons
d. none(beta/gamma/alpha radiation)

31. Vacuum tubes have been replaced by:
a. Conductors
b. Diodes
c. Transistors

32. Dacron is
a. Polyethylene
b. Epoxy
c. Polyamide
d. none

33. It is a secondary plant nutrient:
a. Nitrogen
b. Phosphorus
c. Sulphur
d. none

34. An area of microbiology that is concerned with the occurence of disease in human population is
a. Immunology
b. Paracitology
c. Epidemiology
d. none

35. The number of electrons of a neutral atom is automatically known if one knows the:
a. Atomic number
b. Atomic weight
c. Number of orbitals
d. none

36. Which of the following is not an enzyme?
a. Chemotrypsin
b. Secretin
c. Pepsin
d. none

37. It is impossible for a type of O+ baby to have a type of .............. mother:
a. AB-
b. O-
c. O+
d. none

38. Serum if blood plasma minus its:
a. Calcium ions
b. Clotting proteins
c. Globulins
d. none

39. The autonomic nervous system innervates all of these except:
a. Cardiac muscles
b. Skeletal muscles
c. Smooth muscles
d. none

40. The damage to the .............. nerve could result in the defect of the eye movement:
a. Optic
b. Trigeminal
c. Abducens
d. none

41. Which of these is not a region of the spinal cord?
a. Thoracic
b. Pelvic
c. Lumbar
d. none

42. The shape of the external ear is due to:
a. Elastic cartilage
b. Fibrocartilage
c. Articular cartilage
d. none

43. The external surface of the stomach is covered by
a. Mucosa
b. Serosa
c. Parietal peritoneum
d. none

44. Which of the following is not a human organ system?
a. Integumentary
b. Muscular
c. Epithelical
d. none

45. Which of the following does not vary predictably with the depth of the aquatic environment?
a. Salinity
b. Temperature
c. Penetration by sunlight
d. none

46. The quantity of available nutrients .............from the lower levels of the energy pyramids to the higher ones.
a. Increases
b. decreases
c. remains stable
d. none

47. Which of the following is not a major sub division of the biosphere?
a. Hydrosphere
b. Stratosphere
c. Lithosphere
d. none

48. Vaccination is synonomyous with .............. immunity.
a. Natural active
b. Artificial passive
c. Artificial active
d. none

49. When a patient's immune system becomes reactive to a drug, this is an example of:
a. Super infection
b. Drug resistance
c. Allergy
d. none

50. What is the smallest unit of heredity?
a. Chromosomes
b. Gene
c. Nucleotides
d. none
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  #46  
Old Saturday, January 03, 2015
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Smile Correction

Quote:
Originally Posted by irfihyder View Post
Who proposed the concept “All motion is relative”?
a. Albert Einstein
b. John Kepler
c. Galileo Galilie
d. None

2. The field of specialization of famous Muslim scientist Abu Usman Aljahiz was:
a. Botany
b. Zoology
c. Astronomy
d. None

3. Albatros is:
a. A sea bird
b. A beetle
c. A fruit
d. None

4. The sunlight can reach a depth of …….. meters in the ocean:
a. 100
b. 80
c. 120
d. None

5. The biggest planet in our solar system is:
a. Venus
b. Pluto
c. Jupiter
d. None

6. The biggest species of the cat family is:
a. Tiger
b. Lion
c. Leopard
d. None

7. Which group of animals has heterogametic females?
a. Domestic fowl
b. Earthworm
c. Rabbit
d. None

8. The dominant phase of life cycle in these organism is haploid:
a. Mosses
b. Bacteria
c. Protoza
d. None

9. The atmosphere of moon consists of:
a. 90% Hydrogen, 10% Nitrogen
b. 80%Nitrogen, 20% Hydrogen
c. 60% Nitrogen, 40%inert gases
d. None

10. The chemical name of quartz is:
a. Silicon Dioxide
b. Stannous Oxide
c. Aluminium Oxide
d. None

11. Which month of calendar year can lack a new moon?
a. December
b. February
c. May
d. None

12. Deuterium differs from Hydrogen in having:
a. Different atomic number but same atomic weight
b. Different atomic number and different atomic weight
c. Same atomic number and different atomic weight
d. None

13. One of the following is a water soluble vitamin:
a. Vitamin A
b. Vitamin D
c. Vitamin K
d. Noneb and c

14. Coulomb is the scientific unit to measure:
a. Velocity
b. Temperature
c. Mass
d. Nonecharge

15. Equator passes through one of these countries:
a. Saudi Arabia
b. Italy
c. Japan
d. None

16. Anti Diuretic hormone is secreted by one of the following glands:
a. Pituitary
b. Pancreas
c. Thyroid
d. None

17. Basha Dam is to be constructed on:
a. River Sutlaj
b. River Jhelum
c. River Chenab
d. Noneindus

18. UV light falls in the category of:
a. Ionizing Radiations
b. Non Ionizing Radiation
c. Visible light
d. None

19. The earth’s ……………….is divided into 15 major plates of various sizes:
a. Mesosphere
b. Stratosphere
c. Lithosphere
d. None

20. One of these scientists formulated basic laws of Geometry:
a. Pythagorus
b. Archimedes
c. Aristotle
d. None

21. Phosphorus is an essential component of one of the following biological molecules:
a. Amino acids
b. Nucleic acids
c. Carbohydrates
d. None

22. He was the first scientist to prove that plants move around the sun:
a. Archimedes
b. Galileo Galilei
c. John Kepler
d. None (copurnicus i think, but galileo is probably the one who proved it)

23. Atom is made up of ........... different kinds of subatomic particles:
a. Three
b. Two
c. Four
d. None

24. Uranium is best used as nuclear fuel in one of the following forms:
a. U 235
b. U 237
c. U 238
d. None

25. The alpha particles are compact clusters of:
a. Electron and Proton
b. Two Protons and two Neutrons
c. Three protons and three Neutrons
d. None

26. The Beta particles are fast moving
a. Protons
b. Electrons
c. Neutrons
d. None

27. One of the following countries produces maximum energy from atomic reactors:
a. France (86% of country's energy production)
b. USA (overall by capacity)
c. UK
d. none

28. The unit to measure the quantity of Ozone in atmosphere is
a. Dobson
b. Dalton
c. Cuolomb
d. none

29. The severity of 2005 earthquake in Pakistan on Richter scale was
a. 6.9
b. 7.6
c. 7.1
d. none

30. Geiger-Muller counter is used to detect:
a. Protons
b. Neutrons
c. Photons
d. none(beta/gamma/alpha radiation)

31. Vacuum tubes have been replaced by:
a. Conductors
b. Diodes
c. Transistors

32. Dacron is
a. Polyethylene
b. Epoxy
c. Polyamide
d. none

33. It is a secondary plant nutrient:
a. Nitrogen
b. Phosphorus
c. Sulphur
d. none

34. An area of microbiology that is concerned with the occurence of disease in human population is
a. Immunology
b. Paracitology
c. Epidemiology
d. none

35. The number of electrons of a neutral atom is automatically known if one knows the:
a. Atomic number
b. Atomic weight
c. Number of orbitals
d. none

36. Which of the following is not an enzyme?
a. Chemotrypsin
b. Secretin
c. Pepsin
d. none

37. It is impossible for a type of O+ baby to have a type of .............. mother:
a. AB-
b. O-
c. O+
d. none

38. Serum if blood plasma minus its:
a. Calcium ions
b. Clotting proteins
c. Globulins
d. none

39. The autonomic nervous system innervates all of these except:
a. Cardiac muscles
b. Skeletal muscles
c. Smooth muscles
d. none

40. The damage to the .............. nerve could result in the defect of the eye movement:
a. Optic
b. Trigeminal
c. Abducens
d. none

41. Which of these is not a region of the spinal cord?
a. Thoracic
b. Pelvic
c. Lumbar
d. none

42. The shape of the external ear is due to:
a. Elastic cartilage
b. Fibrocartilage
c. Articular cartilage
d. none

43. The external surface of the stomach is covered by
a. Mucosa
b. Serosa
c. Parietal peritoneum
d. none

44. Which of the following is not a human organ system?
a. Integumentary
b. Muscular
c. Epithelical
d. none

45. Which of the following does not vary predictably with the depth of the aquatic environment?
a. Salinity
b. Temperature
c. Penetration by sunlight
d. none

46. The quantity of available nutrients .............from the lower levels of the energy pyramids to the higher ones.
a. Increases
b. decreases
c. remains stable
d. none

47. Which of the following is not a major sub division of the biosphere?
a. Hydrosphere
b. Stratosphere
c. Lithosphere
d. none

48. Vaccination is synonomyous with .............. immunity.
a. Natural active
b. Artificial passive
c. Artificial active
d. none

49. When a patient's immune system becomes reactive to a drug, this is an example of:
a. Super infection
b. Drug resistance
c. Allergy
d. none

50. What is the smallest unit of heredity?
a. Chromosomes
b. Gene
c. Nucleotides
d. none
The Answer of 4rth one is NONE, A rough estimate of 200 meters is generally given on the internet.
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  #47  
Old Saturday, July 25, 2015
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How volcanoes are responsible for the formation of earth crust ??
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gamma rays are not affected
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vitamin not affected by heating is not vitamin c..It is Riboflavin..Thiamine is affected at 100 degree centigrade.
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Default Correction. Part 1 MCQ-1

Quote:
Originally Posted by Xeric View Post
Every Day Science Paper - 2010
Part - I
Solved MCQs



Question 1. Select the best option and fill in the appropriate Box on the answer sheet: (50 Marks)


1. Water is heated in a kettle. The inside water is heated by convection. A person sitting near the fire receives heat by :

a) Conduction
b) Convection
c) Radiation
d) Reflection
e) None of these

2. A time can come when we will be able to design a machine which can go on working for ever without the expenditure of energy. Is it possible ?

a) No
b) Yes
c) In due course time
d) Very soon
e) None of these

3. The measurement of rainfall is made by an instrument known as :

a) Hydrometer
b) Barometer
c) Hygrometer
d) Pedometer
e) None of these

4. Light year is a unit of :

a) Distance
b) Time Period
c) Light intensity
d) Time
e) none of these

5. Three elements needed for the healthy growth of plants are :

a) N,P,K
b) N,C,P
c) N,K,C
d) N,S,P
e) none of these

6.Copper can be converted into gold by :

a) Heating
b) Artificial Radioactivity
c) Electroplating
d) Chemical reaction
e) None of these

7. In winter an iron pipe feel colder than a wooden window . This is because wood is :

a) Conductor
b) non-Conductor
c) Semi- Conductor
d) Not a solid while iron is a solid
e) None of these

8. The echo (reflected sound) will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least :

a) 1120 ft
b) 120 ft
c) 56fft
d) 100 ft
e) None of these

9. It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the:

a) pitch
b) Frequency
c) Time period
d) Quality
e) None of these

10. When a ray of sunlight enters a dark room , its straight path become visible because of dust particles hanging in the air. It is because light is :

a) Visible
B) Transparent
c) Invisible
d) opaque
e) None of these

11. A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be :

a) 6 feet
b) 12 feet
c) 4 feet
d) 3 feet
e) None of these

12. The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use :

A) red waves
b) Infrared waves
c) Ultrasonic
d) super sonic
e) None of these

13. In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called :

a) Chemical Reaction
b) Nuclear reaction
c) Fission nuclear reaction
d) Fusion nuclear reaction
e) None of these

14. Parsec is a unit of :

a) Energy
b) Time
c) Power
d) Distance
e) None of these

15. German Silver is an alloy of:

A) Zn + Ni
b) Cu + Zn
c) Cu + Ni
d) Cu + Sn
e) None of these

16. The Continent Antarctica lies at the:

a) North pole
b) South pole
c) middle of the earth
d) Equator
e) None of these

17. The temperature of the dead body is:

a) 0 'C
b) 37 '
c) room temperature
d) temperature of the place where it is kept
e) None of these

18. Lactometer is a type of Hydrometer which is used to measure the specific gravity of :

a) Honey
b) Water
c) Milk
d) olive oil
e) None of these

19. Cusec is a unit of :

a) Area
b) Time
c) Distance
d) mass
e) None of these

20. The deepest place on earth is :

a) Trench
b) Mariana Trench
C) Mangrove
d) Groove
e) None of these

21. Twinkling of stars is caused by :

a) Reflection of light
b) Polarization of light
c) refraction of light
d) Interference of light
e) None of these

22. Magnifying power of a simple microscope can be increased by :

a) increasing focal length of the lens
b) Decreasing focal length of the lens
c) Lens of large aperture
d) lens of short aperture
e) None of these

23. Bronze medal is made up of metal :

a) Copper , Zinc
b) Copper , Nickle
c) Copper , Tin
d) Sopper , Silver

24. One of the countries through which equator passes is :

a) Kenya
B) Pakistan
c) Malaysia
d) Malta
e) None of these

25. A very important practical application of properties of matter is hoeing or "godi" practiced by the farmers. This property of matter is called :

a) Elasticity
b) Stress
c) Capillarity
d) Strain
e) None of these

26. It is observed that the total pressure exerted by air on the man of average siz is around 14.7 lb wt. per square inch. But the man feels quite comfortable,. It is because of :

a) An equal and opposite pressure acts from inside
b) of the height of a man
c) of gravity
d) Earth pulls the man upward
e) None of these

27) A nuclear reactor is a device used to carry out controlled nuclear reaction whereas GM counter is a device used to detect :

a) Current
b) Voltage
c) nuclear Radiation
d) power
e) None of these

28. A body can escape the gravitational pull of the earth if it is thrown up with a velocity of:

a) 25 miles per sec
b ) 60 miles per sec
c) 7 miles per sec
d) 10 miles per sec
e) None of these

29. Night vision is possible with the help of :

a) Red light
b) Violet light
c) Infrared Rays
d) Ultra violet Light
e) None of these

30. Myopia is a defect of human eye. it can be corrected by using a lens called :

a) Convex lens
b) Concave lens
c) Cylindrical lens
d) Plano convex lens
e) None of these

31. Walnuts can be broken in the hand by squeezing two together but not one. It is because of :

a) Work done
b) Power
c) Energy
d) Volume
e) None of these

32. The instrument which i specially design for recording earth quake wave is called seismograph which measure earth quake waves on a:

a) Diatonic scale
b) Fahrenheit Scale
c) Richter scale
d) Celsius Scale
e) None of these

33. The planet Mercury completes one rotation around the sun is :

a) 88 days
b) 365 days
c) 98 days
d) 60 days
e) None of these

34. Fossils found in the lowest geological strata are generally most :

a) Advance
b) Complex
c) Primitive
d) Specialized
e) None of these

35. Evolution can be described as :

a) A continuing process
b) A catastrophic event in the past
c) Static
d) The attaining of an ideal type
e) None of these

36. What is the only source of new alleles?

a) Crossing over
b) independent assortment
c) Mutation
d) Fertilization
e) None of these

37. Polygenic characteristic are controlled by :

a) Dominant genes
b) Recessive genes
c) Multiple genes
d) Mutated genes
e) None of these

38. Which of the following , lists the four stages of food processing in order?

a) ingestion , digestion , absorption , elimination
b) digestion , ingestion , absorption , elimination
c) ingestion , absorption , elimination , digestion
d) absorption , digestion , ingestion , elimination
e) None of these

39. In humans , most nutrient molecules are absorbed by the :

a) small intestine
b) stomach
c) liver
d) large intestine
e) None of these

40. The energy needed to fuel essential body processes is called :

a) Essential nutrient level
b) Basal metabolism
c) None of these
d) recommended daily allowance
e) Optimum energy intake

41. Which of the following is an organic molecule needed by the body in small amounts?

a) Protein
b) Vitamin C
c) Zinc
d) Monosaccharide
e) None of these

42. Inhaled air passes through which of the following in the last?

a) Bronchiole
b) Larynx
c) Pharynx
d) Trachea
e) None of these

43. Which of the following is a form of sexual reproduction?

a) Hermaphroditism
B) Fission
c) Fragmentation
d) Budding
e) None of these

44. Cobalt is a material which is :

a) Strongly attracted by a magnet
B) Not attracted by a magnet
c) not a magnet
d) Weakly attracted by a magnet
e) None of these

45. Laughing gas has chemical composition of the following two elements which are :

a) Nitrogen + Hydrogen
b) Nitrogen + Carbon
c) Nitrogen + oxygen
d) Oxygen + Carbon
e) None of these

46. Hepatitis A is transmitted to different individuals by :

a) Water
b) Sneezing
c) Spit
d) Foeces
e) None of these

47. The unit that coordinates different devices of the computer system is :

a) ALU
b)Register
c) Control unit
d) Logical instruction
e) None of these

48. The most abundant element present is in the human body is :

a) Nitrogen
b) Oxygen
c) Carbon
d) Hydrogen
e) None of these

49. Cancer can be treated by :

a) Antibiotics and vaccines
b) Radiotherapy and antibodies
c) Chemotherapy and radiotherapy
d) Antibodies and chemotherapy
e) None of these

50. Animals obtain carbon dioxide mainly from :

a) Starch
b) Sucrose
c) Glucose
d) Glycogen
e) None of these

Note:Corrections are appreciated warmly.

-----------------------------------------------------------------------


Every Day Science Paper - 2010
Part - II
Partial Solution



Attempt only five questions. All questions carry equal marks. (50 Marks)

Question # 02 : Write shot note on the following by giving their exact life span and contributions to the field of science. ( Accurate fact will be appreciated) (10)

a) Al- Beruni
b) Ibn- al - Haitham

Question # 03: What do you know about hereditary disease ? Comment how they are transferred from parents to offsprings ? (10)

Question # 04: Write briefly any five of the following: (Answer in three or four sentences) (10)

a) Plaster of Paris

Compound of Calcium.
When hydrated, the form is rigid.
Blessing for broken bones.
Also used for architecture designing(Model designing), Sculpures and for filling purposes in different areas.

b) Reflex Action

A reflex action, also known as a reflex, is an involuntary and nearly instantaneous movement in response to a stimulus. In most contexts, in particular those involving humans, reflex actions are mediated via the reflex arc; this is not always true in other animals, nor does it apply to casual uses of the term 'reflex'.

c) Pace Maker

A pacemaker or artificial pacemaker, is a medical device which uses electrical impulses, delivered by electrodes contacting the heart muscles, to regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate, either because the heart's native pacemaker is not fast enough, or there is a block in the heart's electrical conduction system.

d) Swine flue

Swine influenza (also called pig influenza, swine flu, hog flu and pig flu) is an infection by any one of several types of swine influenza virus. Swine influenza virus (SIV) or S-OIV (swine-origin influenza virus) is any strain of the influenza family of viruses that is endemic in pigs. Transmission of the virus from pigs to humans is not common and does not always lead to human influenza, often resulting only in the production of antibodies in the blood.

e) Microwave oven

A microwave oven uses microwaves to heat food. Microwaves are radio waves. In the case of microwave ovens, the commonly used radio wave frequency is roughly 2,500 megahertz (2.5 gigahertz). Radio waves in this frequency range are absorbed by water, fats and sugars. When they are absorbed they are converted directly into atomic motion - heat. Microwaves in this frequency range have another interesting property: they are not absorbed by most plastics, glass or ceramics. Metal reflects microwaves, that’s why metal pans do not work well in a microwave oven.

f) Internet

The Internet is a global system of interconnected computer networks that use the standard Internet Protocol Suite (TCP/IP) to serve billions of users worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks of local to global scope that are linked by a broad array of electronic and optical networking technologies. The Internet carries a vast array of information resources and services, most notably the inter-linked hypertext documents of the World Wide Web (WWW) and the infrastructure to support electronic mail.

g) Voltage Stabilizer

A voltage regulator is an electrical regulator designed to automatically maintain a constant voltage level. It may use an electromechanical mechanism, or passive or active electronic components. Depending on the design, it may be used to regulate one or more AC or DC voltages.

Question # 05: A) What is global warming ? Is there any a sunny side to global warming ? If yes , explain. (5)
B) What makes the seasons happen ? (5)

Question # 06: In which region of the world , the following animals are found? Give two main characteristics of each. (10)

a) Blind dolphin

Region: Indus River, Sukkur, Pakistan.

The Indus River Dolphin has a long beak and a stocky body. It has a low triangular hump on its back in place of a 'true' dorsal fin. It is gray-brown in color, sometimes with a pinkish belly. The eyes are extremely small, resembling pinhole openings slightly above the mouth. The Indus River dolphin measures between 1.5 - 2.5 m (5 - 8') in length and weighs 80 - 90 kg (180 - 200 lb). It is found exclusively in freshwater, living not only in the main channels, but also, during the flood season, in seasonal tributaries and the flooded lowlands. These dolphins favor silt-laden, turbid waters, at temperatures between 8 - 33°C (46 - 91°F).

b) Kangaroo

Region: Australia

They are large marsupials. A kangaroo has a strong back bone and four legs. The back two are stronger then the front two. It gives birth to undeveloped young which crawl up to the pouch to continue maturing. Most kangaroos and wallabies are herbivores, which means that they eat only plants. They eat mostly leaves and grass, although some also eat fruit, seeds, and fungi. Some of the smaller species are omnivores, animals that eat both animals and plants. These species eat insects and other invertebrates.

c) Panda

Region: China

The Giant Panda is a bear native to central-western and south western China. It is easily recognized by its large, distinctive black patches around the eyes, over the ears, and across its round body. Though it belongs to the order Carnivora, the Giant Panda's diet is 99% bamboo. Other parts of its diet include honey, eggs, fish, yams, shrub leaves, oranges, and bananas when available. The Giant Panda lives in a few mountain ranges in central China, mainly in Sichuan province, but also in the Shaanxi and Gansu provinces. Due to farming, deforestation, and other development, the Giant Panda has been driven out of the lowland areas where it once lived.

d) Kiwi

Region: New Zealand

Kiwis – flightless birds, grow to about the size of a chicken and weigh between three and nine pounds. They have no tail and tiny two inch wings which for all practical purposes, are useless. Despite its awkward appearance, a kiwi can actually outrun a human and have managed to survive because of their alertness and their sharp, three-toed feet, which enable them to kick and slash an enemy. Little Spotted KiwiThe kiwi’s long slender bill has nostrils at the lower end. Using its excellent sense of smell and flexible bill, the kiwi feeds on worms, insects and grubs, supplemented by leaves, berries and seeds. There are five kinds of kiwi in New Zealand - three closely related... Brown Kiwis, the Little Spotted Kiwi and the Great Spotted Kiwi... are pictured at the bottom of the page.

e) Penguin

Region: Antarctica

Penguins are a group of aquatic, flightless birds living almost exclusively in the southern hemisphere, especially in Antarctica. Highly adapted for life in the water, penguins have counter shaded dark and white plumage, and their wings have become flippers. Most penguins feed on krill, fish, squid, and other forms of sea life caught while swimming underwater. They spend about half of their life on land and half in the oceans.



Question # 07:
A) In which organ these parts are present in animals or human body ? (5)
B) Describe the function of each briefly : (5)
  1. Coronary artery
  2. Sino- Auricular Node
  3. Aortic valve
  4. Auricle
Question # 08: Differentiate between the following pairs:

a) Hydrometer and Hygrometer

A hydrometer is an instrument used to measure the specific gravity (or relative density) of liquids; that is, the ratio of the density of the liquid to the density of water.

Hygrometer is instrument used for measuring relative humidity. A simple form of a hygrometer is specifically known as a psychrometer and consists of two thermometers, one of which includes a dry bulb and one of which includes a bulb that is kept wet to measure wet-bulb temperature.

b) Perimeter and Telemeter

A perimeter is a path that surrounds an area. The word comes from the Greek peri (around) and meter (measure). The term may be used either for the path or its length - it can be thought of as the length of the outline of a shape. The perimeter of a circular area is called circumference.

A telemeter is a device used to transmit measurements of a quantity to a remote location. Telemeters are generally the physical devices used in telemetry and consist either of analog or digital transmitters.

c) Isotopes and Isomers

Isotopes are different types of atoms (nuclides) of the same chemical element, each having a different number of neutrons. In a corresponding manner, isotopes differ in mass number (or number of nucleons) but not in atomic number

In chemistry, isomers are compounds with the same molecular formula but different structural formulas.

d) Flying mammal and Bird

Flying Mammals are said to fly, such as flying squirrels, gliding possums and colugos, glide rather than fly, and only for short distances. Bats are considered as only flying mammals. The forelimbs of bats are webbed and developed as wings, making them the only mammals naturally capable of true and sustained flight.

Birds (class Aves) are winged, bipedal, endothermic (warm-blooded), egg-laying, vertebrate animals.

e) Vertebrates and Invertebrates

Vertebrates are members of the subphylum Vertebrata, chordates with backbones or spinal columns. Vertebrata is the largest subphylum of chordates, and contains many familiar groups of large land animals. Vertebrates comprise cyclostomes, bony fish, sharks and rays, amphibians, reptiles, mammals, and birds.

An invertebrate is an animal without a backbone. The group includes 95% of all animal species — all animals except those in the Chordate subphylum Vertebrata (fish, reptiles, amphibians, birds, and mammals).

Question # 09:
A) What are pesticides? Explain how these are dangerous to human beings?

B) What do the following scientific abbreviations stand for?

1) STP: Standard Temperature and Pressure
2) LORAN: Long Range Navigation
3) SONAR: Sound Navigation and Ranging
4) MAF: Million Acre Feet
5) MeV: Million Electron Volt, Mega electron Volt
6) MASER: Microwave Amplification By Stimulated Emission of Radiation
7) AWACS: Airborne Warning and Controlling System
8) CCTV : Closed Circuit Tele Vision
A person will receive the heat in radiation form. Not in convection.
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