[B][CENTER]EDERAL PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR RECRUITMENT TO POST
IN BPS-17 UNDER THE FEDERAL GOVERNMENT, 2001.
GENERAL KNOWLEDGE, PAPER-I
EVERY DAY SCIENCE
Time Allowed: Three Hours Maximum Marks: 100

[LEFT] Note: Attempt any ten questions. All questions carry equalmarks. [/LEFT]
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Q. 1. (a) What were the special characteristics of Muslim Scientists?
(h) What were the contributions of the following Muslim Scientists:
(i) Umar AI-Khayyam.
(ii) Abu Ali Sina
(iii) ibn Hayyan
(iv). Jhn al Baitar
(v) Zakariya Al-Razi.

Q. 2. (a) Differentiate clearly between Cyclone, Huriicane and tornado.
(b) (i) Name two minerals which ate exported from Pakistan.
(ii) Name some gem-minerals used in Jewellery.
(iii) What is dead sea.
(iv) Why does the Sun appears orange-red at the time of Sunrise and Sunset.
(v) Why does the total Eclipse can happen only at the new Moon.

Q. 3. (a) Name popular farms of Energy. Write five various scientific devices used to convert one type of energy into another form of energy.
b) Write meaning of the following units:
(i) Barrel
(ii) Joule
(iii) Btu
(iv) KWh
(v) Newton.

Q. 4. Write short notes on any THREE of tiillowing:
(i) Synthetic Polymers..
(ii) Laser.
(iii) Pesticides
(iv) Fission and Fusion
(v) Pararnagnetism and Diamagnetism.

Q. 5. Write difference between:
(i) Microcomputer and minicomputer
(ii) Main frame and Super computer.
(iii) Hardware and Software.
(iv) Byte and Word.
(v) Ram and Cache memory.

Q. 6. Describe briefly the principle and working of any TWO of the following:
(i) Pressure cocker
(ii) Television
(iii) Microwave oven
(iv) Radar
(v) Tape recorder.

Q. 7. Differentiate between:
(i) DNA and RNA
(ii) Brass and Bronze
(iii) Blood and Lymph
(iv) Hard water and Heavy water
(v) Small pox and Measles
(vi) Pig iron and Stainless Steel.
(vii) Alloy and Amalgum
(viii) Isotopes and Isobars
(ix) Artery and Vein
(x) Barrage and Dam.

Q. 8. Explain the scientific reasons for the following:
(i) It is not advisable to sleep under trees during the night.
(ii) Water boils quicker on mountains.
(iii) Rainbow is produced in the sky after rain fall and sunlight.
(iv) Water remains cool in a Earthenware pitcher.
(v) Milk is considered as an ideal food.

Q. 9. Which of the following statements are true or false. Only write “True” or “False” in the answer book. Do not reproduce the statement.
(i) Urea is a phosphate fertilizer.
(ii) Cellulose is a natural polymer. (iii) Magnetite is the ore of copper
(iv) Malaria is caused by drinking polluted water.
(v) The instrument used to measure velocity of wind is Barometer.
(vi) Our eye is very sensitive to blue light.
(vii) Sound can not travel through vacuum.
(viii) Enzymes are biological catalyst.
(ix) Leprosy is a disorder of Nervous System.
(x) Mica is a non-conductor of electricity.

Q.10 What are Endocrine glands? Name any four. From which part of the body are the followings secreted:
(i) Insulin
(ii) Thyroxin
(iii) Adrenaline
(iv) Oestrogen
(v) Testosterone and
(vi) Cortisol

Q.11 (a) Name the important parts of a Flower.
b) Explain the Pollination and Fertilization processes.

Q.12 Write short notes on any FiVE of the following:
(i) Ecosystem
(ii) CNG
(iii) PVC
(iv) Hormones
(v) Antibiotics
(vi) Ceramics
(vii) Green House Effect
(viii) Photosynthesis
(ix) Pasteurization
(x) Vaccine.

Q.13 What are the factors of water pollution? What types of diseases are transmitted by using polluted the methods to control pollution of water.

Q.14 Fill in the blanks with appropriate words:
(i) The purpose of computer is
(ii) polio is caused by __________
(iii) The stalagmite is deposit of
(iv) Bauxite is one of ___________
(v) The chemical name of washing soda is
(vi) The main constituent of Sui gas is ____________ colour has the shortest wave length.
(vii) __________colour has the shortest wave length.
(viii)Glass is a __________
(ix)Monomers of protein are _________
(x)Ascorbic acid is vitamin _________
(xi)The solar system has __________
(xii)Aids is caused by _____________
(xiii) In a normal resting person the rate of heart heat is
(xiv) The science which deals with heredity is known as
(xv) In Pakistan Copper mineral is tound in ____________
(xvi) The most abundant element in the earth crust is
(xvii) _________ is an apparatus used tbr measuring the pressure of gases.
(xviii)The smallest branches of an artery lead into tiny blood vessels are called
(xix) The living part of a plant cc I is composed of a nucleus and _______
(xx) The fastest revolving plant is _______

One-liners only (True False, Blanks, MCQs, Short explanations)
 

Q. 2. (a is subjective)

(b)
(i) Name two minerals which are exported from Pakistan.
Silica Sand (Glass Industry)
Gypsum (Cement)
Salt

(ii) Name some gem-minerals used in Jewellery.
Topaz
Ruby
Emerald
Quartz
Diamond
Sapphire

(iii) What is dead sea.
The Dead Sea, also called the Salt Sea, is a salt lake bordering Jordan to the east and Israel to the west. It is 427 metres below sea level thus the lowest point of earth's elevation. Moreover due to its high density, one cannot drown in this lake.

(iv) Why does the Sun appears orange-red at the time of Sunrise and Sunset.
The sun appears red because the atmosphere scatters blue light more efficiently. Since the sunlight has to travel through significantly more atmosphere when it is on the horizon (due to the angles involved), much more of the blue (and green and purple) light gets scattered and redirected in a random direction that is not toward you. But the red light gets scattered less, so the red light makes it from the sun to your eye. Since there is more red light, the sun looks red.

(v) Why does the total Eclipse can happen only at the new Moon.
Since Eclipse is a condition when sun, earth and moon are col-linear, which is possible only when we have a new moon which makes the path of the 3 objects col-linear.

Q. 3. (a) Name popular forms of Energy. Write five various scientific devices used to convert one type of energy into another form of energy.
Forms: Solar, Light, sound, Mechanical (Potential and Kinetic), Chemical, Thermal (Heat) and Nuclear Energy.
Devices: Generator, Microphone, Speaker, Vaccumtube, Bulb, Dynamo, Battery, Photo-diode

b) Write meaning of the following units:
(i) Barrel: 164 Litres UK, US 119 Litres
(ii) Joule: equal to the work done by a force of one newton when its point of application moves one metre in the direction of action of the force
(iii) Btu: he amount of heat needed to raise 1 lb of water at maximum density through one degree Fahrenheit, equivalent to 1.055 × 103 joules
(iv) KWh: Unit of electricity consumption when one uses 1kw energy for one hour.
(v) Newton: the force that would give a mass of one kilogram an acceleration of one metre per second per second

Q. 8. Explain the scientific reasons for the following:
(i) It is not advisable to sleep under trees during the night.
They release CO2 which is harmful for humans.

(ii) Water boils quicker on mountains. Due to lesser pressure and thus lesser boiling point.

(iii) Rainbow is produced in the sky after rain fall and sunlight. Due to dispersion of light which are present in the atmosphere and thus act as prism after rainfall.

(iv) Water remains cool in a Earthenware pitcher. Due to evaporation as earthen pitchers have pores that allows evaporation.

(v) Milk is considered as an ideal food. It has all the minerals that one needs.

Q. 9. Which of the following statements are true or false. Only write “True” or “False” in the answer book. Do not reproduce the statement.
(i) Urea is a phosphate fertilizer. [B]True[/B]
(ii) Cellulose is a natural polymer. [B]True (Most abundant natural polymer)[/B]
(iii) Magnetite is the ore of copper. [B]False (Iron)[/B]
(iv) Malaria is caused by drinking polluted water. [B]False (Mosquito bite)[/B]
(v) The instrument used to measure velocity of wind is Barometer. [B]False (Anemometer)[/B]
(vi) Our eye is very sensitive to blue light. [B]False (green/red)[/B]
(vii) Sound can not travel through vacuum. [B]True (Depends on compression and rarefaction)[/B]
(viii) Enzymes are biological catalyst. [B]True[/B]
(ix) Leprosy is a disorder of Nervous System. [B]False[/B]
(x) Mica is a non-conductor of electricity. [B]True[/B]

Q.10 What are Endocrine glands? Name any four. From which part of the body are the followings secreted:

Pituitary Gland
Hypothalamus
Gonads
Thyroid
Adrenal Glands

(i) Insulin: Pancreas
(ii) Thyroxin: Thyroid
(iii) Adrenaline: Adrenal Medula
(iv) Oestrogen: Ovaries
(v) Testosterone: Testes
(vi) Cortisol: Adrenal Cortex

Q.14 Fill in the blanks with appropriate words:
(i) The purpose of computer is [B]to Compute[/B]
(ii) polio is caused by [B]Virus[/B]
(iii) The stalagmite is deposit of [B]Calcium Carbonate[/B]
(iv) Bauxite is one of [B]Aluminium Ores[/B]
(v) The chemical name of washing soda is [B]Sodium Carbonate[/B]
(vi) The main constituent of Sui gas is [B]Methane[/B]
(vii) [B]Violet[/B] color has the shortest wave length.
(viii) Glass is a [B]Super cooled[/B] liquid
(ix) Monomers of protein are [B]Amino Acid[/B]
(x)Ascorbic acid is vitamin [B]C[/B]
(xi)The solar system has [B]8[/B] Planets
(xii) Aids is caused by [B]HIV[/B]
(xiii) In a normal resting person the rate of heartbeat is [B]72[/B]
(xiv) The science which deals with heredity is known as [B]Genetics[/B]
(xv) In Pakistan Copper mineral is found in [B]Reqo Diq field[/B]
(xvi) The most abundant element in the earth crust is [B]Silicon[/B]
(xvii) [B]Barometer[/B] is an apparatus used for measuring the pressure of gases.
(xviii)The smallest branches of an artery lead into tiny blood vessels are called [B]capillaries[/B]
(xix) The living part of a plant cell is composed of a nucleus and [B]cytoplasm[/B]
(xx) The fastest revolving plant is [B]mercury[/B]