CBSE Class 10 Science Sample Paper 2013 Set F

1] What are the gustatory receptors?

2] What is solar panel?

3] What are the two vital functions of the human kidneys?

4] What happens when a strip of zinc is dipped into copper sulphate solution? Write the balanced chemical equation of the reaction.

5] Fresh milk has a pH of 6. How do you think the pH will change as it turns into curd? Explain

6] On what factors does the resistance and resistivity of a conductor depend? Write SI unit of resistance.

7] Why do we use parallel circuit arrangement for domestic wiring? Give three reasons.

8] A coil of insulated wire is connected to a galvanometer. What would be seen if a bar magnet with its south pole is brought towards one Face of the coil is:

    (a) Moved quickly towards it?

    (b) Moved quickly away from it?

    (c) Placed near its one face?

    (d) Name the phenomena involved?

    (e) North pole of bar magnet is brought towards the same face of the coil.

    (f) North pole of bar magnet is kept stationary near the same face of the coil.

9] What do the following transport:   

    (i) Xylem

    (ii) Pulmonary artery

    (i) pulmonary Vein

    (ii) Phloem

10] What are the constituents of biogas? Write any two uses of this gas.

11] Give reason:

      (i) Ionic compounds have high melting point

      (ii) Ionic compounds are hard crystalline solids.

      (iii) Which gas is produced when dilute hydrochloric acid is added to a reactive metal?

12] (a) What is redox reaction? When magnesium ribbon burns in the air and forms a white residue, is magnesium oxidized or reduced? 

      (b) Why should chemical equations be balanced?

Please refer to attached file for CBSE Class 10 Science Sample Paper 2013 Set F