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Science paper


Class – X


Subject – Science





1.              Can the Shining Surface of a Spoon be considered a mirror? Of which type.


2.              Write the Composition of solder which property of this alloy is being used for welding electricity wire together?


3.              For an electric iron of 1 KW rating at 220V, Fuse of how much capacity is to be used?


4.              Write an equation to show the reaction between Plaster of Paris and Water?


5.              Name any two materials that are used for making Solar cell?


6.              Define the term Semi-Metals. Give an example?


7.               On what factor does the Force experienced by a current carrying conductor placed in a uniform magnetic field depends?


 


8.              Define the term Sonority. What is the use of this Property?


9.              Name any one material having a small value of temperature coefficients of resistance. Write one use of this material?


10.              Write at least four important of determination of pH value in daily Life?  


11.              Draw a neat sketch of Eye and describe its focusing action?


12.              Write equation for the reaction of Magnesium, Aluminum, Zinc and Iron with Dilute Hydrochloric acid?


13.              A metallic coil connected to a 220 V supply has resistance of 110 Ω. How long will take this coil to heat 1 Kg of water from 200C to 700C? Assume that whole heat produced by coil is taken up by water? (Specific heat capacity of water = 4186 j / Kg- 0C)


14.              Explain addition reaction and substitution reaction with an example?


15.              Several steps are involved in the Extraction of Pure metal from ores. Summaries these steps in a tabular from?


OR


              Describe long from of modern Periodic table in detail?


16.              Describe an experiment in detail to demonstrate the force on a current carrying conductor due to a magnetic field. Also show the effect of change in direction of Current?


OR


Draw a schematic diagram of a fixed Dome type of a bio gas plant and write the process also?


Section – B


17.              What is Succus extericus?


18.              How brain is protected from injury and shock?


19.              Define the term double- fertilization?


20.              Write a note on Archaeopteryx?


21.              Why tests are located outside the abdominal cavity in sac called scrotum?


22.              Name the finger like projection present on the inner living of intestine and state there functions?


23.              What is the composition of nervous System in higher vertebra ties?


24.              Give the salient feature of Darwin’s- theory of natural Selection?


25.              With the help of diagram describe the structure of Flower?


26.              Draw a labeled diagram of Neptron and explain how Urine is formed?


OR


Describe the process of Fusions, Budding and Spore Formation in living Organism?


 


 


 



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