Science (CBSE Sample Papers Class – X)(Set-3)

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Download CBSE Science Sample Papers Class X (10th) 2009

                         Sample Paper – 2009

                              Class – X

                         Subject – Science

                                  (Set-1)

 

Time: 2 ½ Hrs                                                          Maximum Marks: 60

Section- A

 

1.      Name the scale on which the acidity or alkalinity can be measured qualitatively?

2.      Balance the equation:- C6H6+O2     à   CO2+H2O

3.      What will be the sign in the value of magnification produced by a lens when:

(i)                 A real image is produced.

(ii) A virtual image is produced.

4.       What is the shape of eyeball?

5.      Which substance act as reducing agent in the reaction:-                                                   Cl2+H2S   à    2HCl+S

6.      Name four metals whose reactivity cannot be decided by their reactions with oxygen.

7.      What is the composition of aqua regia?

8.      Ethyl alcohol (C2H5OH) contains H, as well as OH. Then why it is not acidic or  basic?

9.      What is the role played by a cell or battery in maintaining the flow of current in a circuit?

10.  What is ph?

11.  State which has higher resistance, a 50 W or 25 W lamp bulb and how many times?

12.  Why is atomic number a more fundamental property than atomic mass in deciding the properties of an element?

Section- B

 

13. Which hormone helps in lowering the level of blood glucose in humans.?

14. Why are Testes outside the abdominal cavity?

15. Draw the diagram of Human Male Reproductive system?

16. In Brief describe the various type of plant movement?

17. Differentiate between Analogous and homologous organs.

Why is blood circulation in human heart called double circulation? What is the significance of four chambered heart for humans and birds?
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