View Single Post
  #5  
Old Thursday, April 12, 2007
Last Island's Avatar
Last Island Last Island is offline
Royal Queen of Literature
Medal of Appreciation: Awarded to appreciate member's contribution on forum. (Academic and professional achievements do not make you eligible for this medal) - Issue reason: AppreciationModerator: Ribbon awarded to moderators of the forum - Issue reason: Best Moderator Award: Awarded for censoring all swearing and keeping posts in order. - Issue reason: Best ModMember of the Year: Awarded to those community members who have made invaluable contributions to the Community in the particular year - Issue reason: 2008Gold Medal: Awarded to those members with  maximum number of  reputation points. - Issue reason: For the year 2007, 2008, 2009, 2010, 2011Diligent Service Medal: Awarded upon completion of 5 years of dedicated services and contribution to the community. - Issue reason: More than 5 years of dedicated services
 
Join Date: May 2005
Location: Forest of Fallen Stars
Posts: 7,534
Thanks: 2,408
Thanked 15,736 Times in 4,981 Posts
Last Island is headed toward stardomLast Island is headed toward stardomLast Island is headed toward stardomLast Island is headed toward stardomLast Island is headed toward stardomLast Island is headed toward stardomLast Island is headed toward stardomLast Island is headed toward stardomLast Island is headed toward stardomLast Island is headed toward stardomLast Island is headed toward stardom
Default

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
__________________
The Me you have always known, the Me that's a stranger still.

Last edited by Last Island; Wednesday, May 27, 2009 at 04:58 PM.
Reply With Quote
The Following 2 Users Say Thank You to Last Island For This Useful Post:
Alina Rasheed (Wednesday, February 20, 2013), Eager (Wednesday, May 22, 2013)