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.
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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)
- Coronary artery
- Sino- Auricular Node
- Aortic valve
- 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