CBSE Class 10 Science Question Paper SA2 2010 (4)

CBSE Class 10 Science Question Paper SA 2 2010 (4). 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.      Write a balanced chemical  equation  to represent the following reaction.Carbon monoxide  reacts with  hydrogen gas at 340 atm. to form methyl  alcohol.

2.      Give an example of a metal which is a liquid at room temperature.

3.      The voltage  - current (V-I) graph of a metallic  circuit  at two different temperature Tland T2 is  shown, which  of the two temperature is  higher  and why?

4.      What are the two disadvantages of burning fossil fuels ?

5.      Why is sodium kept immersed in kerosene oil ?

6.      Write observation  with  reaction  for the following :granulated zinc reacts with  dil.  Sulphuric  acid.

7.      Name 2 salts that are used in black and white photography.  Give reactions when they are exposed to light.

8.      What happens when an iron nail is put inside copper sulphate solution?  Write reaction with observation.

9.     Major amount of water is  selectively  reabsorbed by the tubular part of nephron.  On what factor does the amount of water reabsorbed depend on?

10.   How  has the traditional use of wind  and water energy been modified  for our convenience?

11.   When do you say that the resistance of a wire is 1Ω

Please click the link below to download pdf file of CBSE Class 10 Science Question Paper SA 2 2010 (4).