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Old Thursday, April 12, 2007
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Default Everyday Science Papers (1985 - 1999)

EVERYDAY SCIENCE PAPER 1985

Q.1 Fill in the blanks:

(i) When the resultant of all the forces acting on a body is zero the body is said to be in a state of _________________ .

(ii) Gamma Rays are similar to _________________.

(iii) The phenomenon of separation of ordinary light into its constituent colours is known as _________________.

(iv) If a body weights 600 kg on the surface of the earth then the weight of the same body on the surface of moon will be _________________.

(v) When a bullet penetrates into a target, kinetic energy of a bullet is converted into _________________.

Q. 2 Draw well labeled diagram to Human Eye. Explain the image formation.

Q. 3 What are longitude and latitude? Why are they drawn?

Q. 4 Explain the term Element and Compound as used in Chemistry.

Q. 5 Explain the following statements.

(i) The work out put of a machine is always equal to the work input.
(ii) Gravity of all the objects is the same, regardless of their mass at a given point on the earth’s surface.

Q. 6 What are the symptoms and mode of transmission of the following diseases?

Q. 7 What do you know about soaps and detergents. How do they differ from each other? What advantages detergents over soap?

Q. 8 What is mechanism by which balance of Nitrogen is maintained in the atmosphere?

Q. 9 Give the name of five major mountain ranges of Pakistan.

Q. 10 What is lightening? How it is caused? Why it is considered to be dangerous?

Q. 11 Indicate connections between items in List A and list B by making matching pairs.

A

Tuberculosis
Haemoglobin
Malaria
Stomach wall
Liver

B

Anopheles
Iron
Clycogen
B. C. G
Pepsin

Q. 12 Rain water is soft and river water is hard. Why? How can hardness of water be removed?

Q. 13 Describe the construction and use of a transformer.

Q. 14 (a) Discuss the industrial preparation of artificial ghree.
(b) Name the cement factories in Pakistan and enumerate its preparation.

Q. 15 Name the discoveries of the following scientists
  • Watson and Clark
  • Louis Pasteur
  • Alexander
  • Mendel
  • Edward Jenner
Q. 16 What do you know about the following.
  • Alloy
  • Amalgam
  • Agua Regia
  • Heavy Water
  • Dry Ice
  • Methylated Spirit (CH3OH)
  • Chloroform (CHCl3)
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EVERYDAY SCIENCE PAPER 1986

1. What are the main constituents of China Clay?

2. What are the effects of the deficiency of the following nutrients in the Human body?

(i) Iodine
(ii) Vitamin A
(iii) Vitamin B
(iv) Vitamin C
(v) Vitamin D

3. Define Ultrasonic Waves. What are some uses of Ultrasonic Waves?

4. Name the raw material used in manufactures of Plastic. What are the two well known types of Plastics? Give at least two important properties of Plastic?

5. What is common cause of Heart Attack?

6. In what units the following can be measured?
  • Force
  • Temperature
  • Current
  • Heat
  • Pressure
  • Radioactivity
  • Atomic Energy
7. What parts of the human body secrets the following enzymes? Give one important function of each.
  • Amylase
  • Pepsin
  • Trypsin
  • Lipase
  • Sucrase
8. Mention five applications of Laser.

9. Name the field of the following Scientists.
  • Jabir bin Hayyan
  • Ibnal Haitham
  • Abu Rehan al Beruni
  • Ibn e Sina
  • Al Khawarzimi
  • Abu Bakar Zakariyya Razi
  • Ibn e Baitar
  • Abu Qasim Zahravi
10. What do you mean by the term RADAR? Explain its working.

11. Name the six important elements which forums 99% of the human body.

12. Define the following,
  1. Chain Reaction
  2. Fission
  3. Fusion
13. Name the important sources of energy used in the industries in Pakistan. What other alternative sources of energy can be used in the industry?

14. What are planets? Name the known planets.

15. Given below is the list of scientists works (List A) and (List B). Match the two.

A

Solar system
Current Electricity
Telephone
Gramophone
Atomic Number
Structure of DNA
Mercury Thermometer
Dynamite
Cells
Television

B

Thomas Edison
Alfred Nobel
Copernicus
Mosley
Fahrenheit
Volta
Watson and Clark
Graham Bell
John Baird
Robert Hooke
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EVERYDAY SCIENCE PAPER 1987


1. What are the achievements of the following scientists?
  • Muhammad Bin Zakria Razi
  • Ibne Al Hasham
  • Jabir Bin Hayyan
  • Ibne Rushd
  • Mendal
  • Watson and Clark
  • Lamarck
2. Who discovered or invented the following? Answer any five.
  • Penicillin
  • X Ray
  • Telephone
  • Circulation of blood
  • Bicycle
  • Dynamite
  • Mercury thermometer
3. (a) What do you understand by blood pressure?
(b) What is the blood pressure in man under normal condition?
(c) What is Reflex Action?
(d) What is the difference between a virus and a bacterium?
(e) Name any viral disease special to children.

4. (a) What do you understand by immunity?
(b) What is the principle of immunization?
(c) Why is matching of blood groups done before giving blood transfusion?
(d) What is the principle of pasteurization?

5. Name the disease which are caused by the deficiency of the following.
  • Vitamin A(C2H29OH)
  • Vitamin B1
  • Vitamin C
  • Vitamin K
  • Insulin
  • Iodine
  • Gastrin
6. Fill in the blanks.

(a) A process of digestion begins in ______________ .

(b) Sometimes when white blood corpuscles greatly increase in number, they cause a disease called ______________.

(c) The principle of wireless telegraphy was discovered by ______________.

(d) Earth is one of the ______________ planets which revolves round the sun.

(e) The planet nearest to the sun is ______________.


7.
Define the following.
(a) Nuclear Fission
(b) Cast Iron
(c) Bronze
(d) German Silver
(e) Washing Soda (Na2CO3)
(f) Caustic Soda (NaOH)
(g) Nebula

8. (a) What is the function of root tubers?
(b) What is the main difference between an animal and plant cell?
(c) Why are the leaves of pine tree needle shaped?
(d) How is the age of tree determined?

9.
(a) Describe the process of photosynthesis in plants.
(b) Name the positively phototropic and negatively phototropic parts of a plant.

10. (a) How a rainbow is produced?
(b) What are the component colours of rainbow?
(c) What do you know about the Milky Way?
(d) Why do you hear thunder after and see flash of light first?
(e) How an earthquake is caused?

11. Make five matching pairs from list A and B.

A

Sleeping
Ring worm
Sulphur
Protein
Kidney
Steel
Pancreas

B

Tubules
Amino Acids
Tse-Tse
Insulin
Bessemer Process
Fungus
Contact process

12. Define
(a) Chromometer
(b) Lactometer
(c) Gyroscope
(d) Periscope
(e) Barometer

13.
Where do the following animals occur?
  • Kiwi
  • Kangaroo
  • Ostrich
  • Reha
  • Rattles snake
  • Snow leopard
  • Yak

14.
Distinguish between the following (Answer any three):
(a) Optical telescope and radio telescope
(b) Weather and climate
(c) Isotherm and Isobar
(d) Small pox and measles
(e) Erosion and corrosion
(f) Epidemic and endemic
(g) Cost iron and wrought iron.

15.
Define five of the following:
(a) Food Chain
(b) Sumbiosis
(c) Geotropism
(d) Arteriosclerosis
(e) Hemophilia
(f) Yeast
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EVERYDAY SCIENCE PAPER 1988



1.
Describe briefly any two of the following:
(a) Abcess
(b) Appendicitis
(c) Asthma
(d) Goiter

2. What is the structure and function of human kidney?

3. What is the factor responsible for environmental pollution in Pakistan?

4. Name at least five important products which are obtained during refining the crude oil.

5. Write short notes on any two of the following.
(a) Green House Effect
(b) Pollination
(c) Photosynthesis
(d) Chromosome

6. What is integrated circuit? What are its uses?

7. What is the composition of human blood? How clotting of blood take place?

8. What do you mean by the following term? Answer any five.
(i) Palaeontology
(ii) Limnology
(iii) Sericulture
(iv) Agronomy
(v) Histology
(f) Apiculture

9. What is meant by rectification? Explain the use of a diode as rectifier?

10. (a) Give composition of China Clay.
(b) What is the use of Borax in Ceramic Industry?

11. (a) Match correct composition.

A
Nitrogen
Oxygen
Carbondioxide

B

20.94%
78.09%
0.03%

(b) Name the gas used in any two of the following.
(i) Refrigerator
(ii) Aerated drink
(iii) Kitchen gas stove

12. Explain the Principle of Television.

13. (a) What is the difference between Revolution and Rotation of the earth?
(b) How long it take to complete one revolution and rotation?
(c) What major earth’s phenomena are resulted from revolution and rotation?

14. (a) Name two mineral exported by Pakistan.
(b) Name the industries which depend upon the following.
(i) Common Salt
(ii) Sulphur
(iii) Silicon
(iv) Gypsum

15. Name the chemicals which are added in the following either for preservation or for nutritional reasons.
(i) Fruit and Fruit juices
(ii) Drinking Water Chlorine
(iii) Vegetable Ghee
(iv) Meat
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EVERYDAY SCIENCE PAPER 1989

1. (a) What are the main reasons of water logging in Pakistan?
(b) How does a tube well reclaims a water logged soil?
(c) What is salinity?
(d) How do we reclaim a saline soil?
(e) What is reflex arc?

2. (a) What are the main components of Computer?
(b) State the Steps involved in solving a problem on computer

3. The chemical formula of water is H2O. Why no formula is given to air?

4. (a) What is the composition of air of atmosphere?
(b) How rainbow is formed?
(c) How do plants make their food?
(d) What is the end product of this process?
(e) What is the difference between mixture and compound?
(f) What is the smallest planet of solar system?

5. (a) Why it is easier to push heavy grass mover than to lift it?
(b) Why a bomber does not drop a bomb when it is vertically above the target?
(c) What are the producers and consumers in an ecosystem?
(d) How Heroin is produced?
(e) What is the difference between hard water and heavy water?

6. Fill in the blanks.

(i) Pressure cooker works on the principle that the boiling point of a liquid ______________ with the increase of pressure.

(ii) ______________ is the best conductor of electricity.

(iii) Blood Cells are manufactured by ______________ of the body.

(iv) The smallest organism which causes disease is virus and even smaller is ______________.

(v) Neutron, Positron and Proton have ______________ and ______________ charges respectively.


7. Write short notes on any two of the following.
(i) Heredity
(b) Photosynthesis
(c) Antibiotic
(d) Process of digestion in human body

8. Define the following.
(i) Sericulture
(ii) Haemophilia
(iii) Atherosclerosis
(iv) Radioactivity
(v) Vitamin C
(vi) Gypsum
(vii) Stainless Steel
(viii) Fats and Oils
(ix) Chromosome
(x) Phobia

9. (a) Explain the difference between a car battery and dry battery cells.
(b) Pepsin and Tripsin
(c) Washing Soda and Caustic Soda
(d) X Rays and Gamma rays
(e) Small pox and Measles

10. Write the scientific principle of the following:
(a) Thermometer
(b) Electric Fuse
(c) Rocket
(d) Laser
(e) Lever

11. (i) How can you separate the constituents of a mixture of Iodine, Common salt, and powdered glass?
(ii) What is the difference between telescope and a microscope?
(iii) Under what principle electricity is produced by water held up by a dam?
(iv) What is the duration of day and night in polar region? Explain why?

12. How can steel be manufacture from iron ore? Explain.

13. What are the uses of the following instruments?
(i) Galvanometer
(ii) Gyroscope
(iii) Lactometer
(iv) Barometer
(v) Spectrophotometer-meter
(vi) Periscope
(vii) Seismometer
(viii) Meter
(ix) Tachometer
(x) Geiger counter
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EVERYDAY SCIENCE PAPER 1990


1. Write a brief note on the transmission and reception of Radio waves?

2. Write at least five important functions of human skin.

3. Give a comparison of Camera and human eye.

4. What is meant by semiconductor? Explain how the conductivity of such material changes with:
(i) Temperature
(ii) The presence of impurities.

5. (a) Define the term pesticide.
(b) Name any four living organisms on which following pesticides are effective?
(c) What are the harmful effects of these pesticides are human life?

6. What are the animal and plant sources of the following?
  • Vitamin B1
  • Iron
  • Vitamin A
  • Calcium
  • Vitamin B
  • Vitamin E1
  • Nicotinic Acid
7. Lunar Eclipse occurs only at about the times of full moon while solar eclipse never occurs on full moon days. Explain why?

8. (a) Give chemical name of one Nitrogen and one phosphorous containing fertilizer.
(b) What is the role of Nitrogen and phosphorous in the growth and development of various parts of plants?

9. (a) What do you know about Endocrine Glands?
(b) From which part of the body following hormone are secreted?
(i) Insulin
(ii) Thyroxin
(iii) Adrenalin
(iv) Oestrogen
(v) Progesterone
(vi) Testosterone

10. What is the difference between any five of the following?
(i) Rock and Soil
(ii) Air cooler and Air conditioner
(iii) Electron and Beta particles
(iv) Conductor and Insulator
(v) Power and Energy
(vi) Mitosis and Meiosis
(vii) Analogy and Homology

11. Give the principles and brief working of any two of the following.
(i) Rocket
(ii) Atomic Reactor
(iii) Vaccine
(iv) Telephone

12. (a) Match name of scientist with his discovery.

A

Antonio Vas Leuwenhoek
Alexander Fleming
Dr. C. Gilbert
Mendeleev
Edward Jenner

B

Penicillin
Small Pox Vaccine
Micro organism
Laser
Periodic Table

(b) Name the scientific field in which following Muslim scientists have made their contribution.
  • Jabir Bin Hayyan
  • Ibn el Haitham
  • Ibn Baitar
  • Abu al Qasim Zharvi
  • Al Khwarizmi
13. (a) Prepare separate lists of Natural and Synthetic Polymers from the follwong.
  • Acrylic
  • Nucleic Acid
  • Dacron
  • Protein
  • Malmac
  • Cellulose
(b) Give uses of any two of the following types of plastics.
(i) Polyvinyl chloride
(ii) Polyethylene
(iii) Bakelite

14. Identify the effects produced by the following drugs.
(i) Marijuana
(ii) LSD
(iii) Heroine
(iv) Codeine

15. Write short notes on any two of the following
(i) DNA
(ii) Acid Rain
(iii) Green house Effect
(iv) Sex Linked Inheritance
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EVERYDAY SCIENCE PAPER 1991

1. (a) What is science? Give a brief introduction?
(b) In what aspects science differs from arts, literature and philosophy?
(c) What disciplines of realms of human knowledge can be included in Natural Science, social sciences and Humanities?
(d) Make a list of limitations of Science

2. Highlight the contributions of any three of the following:

(a) Umar Khayyam
(b) Ibn Sina
(c) Al Farabi
(d) Ibn e Nafis
(e) Al Kinidi

3.
Give scientific examples. Discuss whether science and technology have made life for man easier than it was 500 years ago?

4. (a) What are the main groups of ceramics in respect of their use in our daily life?
(b) What are plastics? Give their properties and uses in detail in life?
(c) Distinguish between Pig Iron, Cast Iron and Wrought Iron.

5.
(a) Name the members of solar system.
(b) Explain briefly the formation of days and nights.
(c) How seasonal variation occurs on our earth?

6. (a) Explain work, energy, and power and give their units.
(b) How work may be converted into energy vice versa?

7. (a) Mention the characteristics of laser with the influence of each property.
(b) What is doping and how its influence on the division of semi conductors into N & P Type Semiconductor?

8. (a) Distinguish between Computers and Microprocessors.
(b) What are the main elements of a Micro Computer?
(c) What do you mean by peripherals, hardwares and softwares?

9. (a) Write response on the following

1. The method by which men provides for his everyday needs and desires is called (Technology, Engineering, Versatility)

2. Of all the flying machines, man has made only (Balloon Jet Air Craft, Rockets) are suitable for space flight.

3.Transistors do not need a warm u period because they have no (Plate, Grid, Filament)

4.If an object gives off its own light, it is said to be (transparent, illuminated, luminous)

5.An electric heater would be most likely to produce (X-rays, Ultra Violet, I R Radiations)

(b) Fill in the blanks

(i) If the mass/volume ratio of a box containing stones is equal to the mass volume ratio of a box containing feather than the box containing ________ has smaller volume of material in it.

(ii) In nay one kind of atom, the number of proton, electrons is the same, it is the number of _________ which may change from atom to atom of the same element.

(iii) The _________ scale of temperature is called the absolute scale.

(iv) The type of radiation hat is unaffected by magnetic field is called __________ .

(v) If we know the mass of an object and the force applied on it, it is possible to calculate _________ of the object.


10. Distinguish between the following

(a) Artificial Radio Activity
(b) Electron and Beta Rays
(c) Hydel Power and Nuclear Power
(d) Photo-Voltaic and Photo Electric Effect
(e) Microscope and Telescope

11. Match the following pairs from list I & list II

List I

Kidney
Proteins
Photosynthesis
Heredity
Nuron
Hemophilia
Pace Maker
Virus
Antigen
Amphibian

List II

Frog
Antibody
Hepatitis
Bleeding disease
Heart
Nerve cell
Chromosomes
Plant
Amino acid
Nephron


12. (a) Give a definition of the following


(i) Inflammation
(ii) Transfusion
(iii) Reflex Action
(iv) Anemia
(v) Heart Sounds

(b) Differentiate between the following

(i) Enzymes
(ii) Insulin and Trypsin
(iii) Root
(iv) Cellulose
(v) Milligram and Kilogram

13. Write short note of any three of the following

(i) Digestion
(ii) Malaria
(iii) Vitamin
(iv) Pollination


14. (a) Name the organs responsible for the following functions present in either elements, plants or human.
  • Vision
  • Reproduction
  • Hormone Secretion
  • Blood Pumping
  • Food Storage
(b) Fill in the blanks

(i) Active transport in animals and plants required metabolic energy and ______________ to carry the substances across cell membranes electrical gradient.

(ii) Diseases that spread through air are called _________ disease.

(iii) Large trees give off ___________ for the support of their heavy spreading branches.

(iv) When iron is less in body the quantity of __________ in cell decreases.

(v) Arteries become hard due to deposition of _____________________ in them.

15. In which organ these parts are present in animal or human body. Describe its structure and functions briefly.
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EVERYDAY SCIENCE PAPER 1992


1. Give an account of the contributions of Muslim Scientists during the period extending from the eighth to twelfth century.

2. Explain any three of the following Laws of Science.

(a) Law of Heredity
(b) Law of Gravitation
(c) Law of floatation of Bodies
(d) Law of Conversation of Energy

3. In addition of performing major functions, some organs of the body secrete hormones also. Name any four of these organs and mention some of the hormones they secrete.

4. Attempt any five of the following

(a) The solar system has

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

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

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

(c) The instrument used for measuring the velocity

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

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

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

(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

(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.

(g) Mirage is an example of

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

5.
What do you understand by biochemical cycle? Give an account of nitrogen or carbon cycle?

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

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

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


8.
(a) What is meant by rotation of crops? What advantages result from this practice?

(b) Why does an electric bulb make a sudden loud noise when it is broken?

(c) What is the scientific basic of the following?

(i) Pasteurizing milk
(ii) Breathing after running

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
g) Small pox and Measles

10. Fill in the blanks


a) The age of a tree can be determined by counting ___________ .

b) In a normal resting man, the rate of heart beat is ____ per minutes.

c) In Pakistan copper is found in ________ .

d) American space shuttle _______________ is the first winged space hip to orbit and return to airport landing.

e) _________ a defect of vision which does not permit to see clearly the distant objects.

f) The brightest planet is ________

11. (a) What gases are taken in and given out by a green plant in darkness and in sunlight?
(b) What are the characteristics of insect pollinated flowers?
(c) What is heavy water?
(d) What is twinkling of stars? Explain.
(e) What do you understand by half life time of a radioactive substance?
(f) What is Cellulose? What are its uses?

12. Describe briefly the principle and working of any two of the following appliances

a) Radar
b) Television
c) Pressure cooker

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

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

14. (a) What are the commercial forms of the iron?
(b) What is baking powder chemically?
(c) What are the uses of sulfuric acid?

15. Write short notes on any five of the following

(a) Haemophiia
(b) Tuber
(c) Catalyst
(d) Early Bird
(e) German Silver
(f) Laser
(g) Spectrum colours
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EVERYDAY SCIENCE PAPER 1993


1. Which of the following statements are false and which are true.

a) Urea is a phosphorous fertilizer
b) Ibn Baitar was a renowned Muslim Botanist
c) Penicillin was discovered by Edward Jenner
d) Cellulose is a natural polymer
e) Vitamin A and D are water soluble.
f) Amoeba is a unicellular animal
g) Solar eclipse occurs in full moon
h) Water is a bad conductor of electricity
i) Leprosy is a disorder of the nervous system
j) Chlorofluorocarbons cause decomposition of ozone

2.
Write short notes on any two of the following

a) Nitrogen cycle
b) Solar system
c) Green house effect

3. Describe any of the following terms in not more than four lines.

a) Mitosis
b) Hemophilia
c) Reflex action
d) Metabolism
e) Fission
f) Non-renewable energy resources

4. Fill in the blanks with correct choice.

(i) Quartz is chemically a _____________.

(ii) Chicken egg is composed of _____________.

(iii) Visible light energy has the wavelength range of _____________.

(iv) The particles with positive charge but having mass equal to that of electron is called _________ .

(v) Gas in children’s play-balloons going upward is ____________.

(vi) Standard pressure is ______________.

(vii) Iron corrodes due to the formation of ________________.


5. What is the difference between a ‘DAM’ and a ‘Barrage’? Why cannot Barrages be used for production of hydroelectric power?

6. What are plastics? Discuss their important properties which have contribute to their extensive use in modern industry. Explain their adverse effects on
(i) Environment
(ii) Agriculture

7. Give reasons of the following:

a) A 25 watts incandescent bulb provides much less light than a 25 watts fluorescent tube light.
b) A ball dropped vertically on the ground does not rise to its original height.
c) Meat takes longer time to cook on a mountaintop than at sea level.
d) More stirring is needed when sugar is dissolved in cold coffee than in hot coffee

8. Explain in detail what is a balanced diet; name a nutrient present in each of the following food

(i) Apple
(ii) Bread
(iii) Meat
(iv) Butter
(v) Orange
(vi) Egg
(vii) Milk
(viii) Spinach

9. Differentiate between

(i) Latitude & Longitude
(ii) Pig Iron & Cost Iron
(iii) Hard Water & Heavy Water
(iv) Drug use & Drug abuse

10. What are the warm blooded animals? Give any two examples. Explain any three traits found in warm blooded animals

11. What does the abbreviation LASER stand for? Point out three differences between laser and ordinary light. Mention two applications of Laser.

12. Name the instruments used for measuring each of the following

(i) Pressure
(ii) Voltage
(iii) Purity of milk
(iv) Temperature
(v) Velocity of wing

13. What is Computer? Name their different classes. Briefly explain the term Software and Hardware.

14. Muslim Scientists contributed in science and mathematics during the period 8th – 13th century. Name five scientists who are well known for their contribution in the following fields during the era.

(i) Chemistry
(ii) Algebra
(iii) Light

15. Fill in the blanks


(i) Starch is a polymer of __________.

(ii) A big astronomical observatory known as the _________________________ was established during the reign of Caliph Mamoon.

(iii) Adrenalin is secreted by the Adrenal _______________.

(iv) ________ planet is nearest to the earth.

(v) CFC is the abbreviation of _____________________.

(vi) The process of conversion of a material from solid state directly to gaseous state is called ____________.

(vii) A junction diode is formed by PWP semiconductor pieces whereas junction transistor is a sandwich made up of P__________ transistor.
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EVERYDAY SCIENCE PAPER 1994


1. Which of the following statements are true and which are false.

a) Bacteria are parasites
b) Ruby is an Oxide of Aluminum
c) In the Australian continent, days are longer than nights in June.
d) Gypsum is hydrated calcium carbonate chemically.
e) Twenty-three moons revolve around Saturn
f) Pluto is the coldest planet
g) Chromite ore contains chromium oxide
h) Mica is a nonconductor of electricity.
i) Sun is the biggest star in the universe.
j) The earth completes one rotation about its axis in 365.25 days.

2. Write short notes on any Two of the following

(i) Structure of cell (animal)
(ii) Hovering satellite
(iii) Water pollution

3. Describe briefly any Five of the following terms

(i) Ecosystem
(ii) Laser
(iii) Alloy
(iv) Polymer
(v) Diffusion
(vi) Balanced diet

4. Fill in the blanks


(i) The capacity to do work is called _________.

(ii) The energy possessed by a body die to its position is called _________.

(iii) Kitab al-Manazir is a publication by a famous Muslim scientist about _________.

(iv) _________ usually lies in the centre of an animal cell.

(v) Calcium and _________ are the essential elements of bones.

(vi) Proteins are formed by combination of _________.

(vii) Rainwater dissolves sulphur dioxide to form _________

(viii) The set of instructions given to a computer is called _________.

(ix) Chemicals such as penicillin which set on _________ are called antibiotics.

(x) Comet Shoemaker Levy 9 hit the planet _________ in July this year.


5. Name the three major parts of human brain and the functions they control. Make a rough labeled diagram of the brain.

6. Explain what is meant by “Non-conventional source of energy”. Describe any three of these.

7. Give brief answers for any five of the following

(i) Name the two proteins found in milk.
(ii) What organ of human body controls the amount of water and salt in blood?
(iii) Drugs are classified into five major groups. Define any two.
(iv) How do chromosomes in a male and female (enter) in a human body?
(v) Which two gases do you exhale more than you inhale?
(vi) Name any two glands which secretes hormones in human body.

8. Explain briefly any two of the following phenomena.

(i) Lunar eclipse
(ii) Photosynthesis
(iii) Formation of a rainbow

9. Differentiate between any five of the following pairs.

(i) Veins and arteries
(ii) PNP and NPN transistor
(iii) Electronic current and static electricity
(iv) Concave and convex lens
(v) Fats and oils
(vi) Absorption and adsorption

10. Describe in detail, the impact of scientist inventions on agriculture.

11. What are viruses? Describe their structure. Which of the following diseases are caused by virus and which are caused by bacteria?

(i) Polio
(ii) Diphtheria
(iii) AIDS
(iv) Tetanus
(v) Smallpox
(vi) Measles

12. Describe the principle, construction and working of telephone.

13. Which part of a plant do they belong to?

(i) Ginger
(ii) Raddish
(iii) Potato
(iv) Cinnamon
(v) Peanut
(vi) Saffron
(vii) Almond
(viii) Chillies
(ix) Spinach
(x) Tomato

14. Which field of study do the following branches of science represent?

(i) Haematology
(ii) Cytology
(iii) Morphology
(iv) Psychology
(v) Geology

15. Fill in the blanks.

(i) In a heat engine, heat energy is changed into _________ (mechanical energy, magnetic energy, light energy)

(ii) Frequency of audible sound in Hertz (Hz) is _________ (20 – 20,000Hz, 20,000 – 30,000Hz, 30,000 – 4,000Hz)

(iii) Deficiency of vitamin B causes _________ (rickets, beriberi, night blindness)

(iv) Cheapest source of producing electricity is _________ (coal, natural gas, water)

(v) The smallest unit of measurement of wavelength is _________ (micrometer, angstrom, manometer)

(vi) The chemical generally used in refrigerators is _________ (ethylene, glycofreon, methyl alcohol)

(vii) The unit of ‘TON’ to specify air conditioners is equal to _________ (10,000 BTU/hour, 12,000 BTU/hour, 16,000 BTU/hour)

(viii) Unit of electricity ‘KILOWATT HOUR’ is the unit of (force, work, power)

(ix) Period of famous Muslim scientists is _________ (3rd – 5th century, 6th – 7th century, 7th – 13th century A.D.)

(x) Heat radiation travels at a speed equal to _________ (half the speed of light, speed of light, speed of wind)
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