CBSE Class 10 Science Question Paper SA 2 2012 (7)

CBSE Class 10 Science Question Paper SA 2 2012 (7). Students can download the last year question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.

SECTION  - A

1.      What are the two factors on which the lateral displacement of an emergent ray from a glass slab depends ?

2.      How ethanoic  acid  got its  name as glacial  acetic  acid  ?

3.      Mention  any two methods of garbage disposal.

4.      List  two components of ecosystem.

5.      The given  diagram  shows an object 0 and its  image  I. Copy the diagram  on your answer look and draw suitable  rays to locate  the lens  and its  focus. Name the type of lens in this case:

 6.      A student sitting at the back of a class is not able to see what is written on the blackboard.He however, sees it clearly when sitting on the front seat at an approximate distance of1.5m from the blackboard.

(a)    Name the defect of the eye he is suffering from.

(b)    Draw ray diagram to illustrate the image formation of the blackboard writing by his eye lens when he is seated at the back seat.

7.    For driving a car what type of mirror would  you prefer to see traffic at your back and why ? 

8.    How did the Chipko movement ultimately benefit the local population ? 

9.  (i)   State  the Modern Periodic  Law

     (ii)    How many periods and groups are there in the modern periodic table ? 

10.   An element  X has mass number 35 and number of neutrons 18

(a)    Write the atomic number of X

(b)    Give  electronic  configuration of X.

(c)    To which group and period does it belong ?

Please click the link below to download pdf file of CBSE Class 10 Science Question Paper SA 2 2012 (7).