Question

SECTION-B Carry 2 Marks each)
11. The equivalent resistance of eight resistance if 48 . What would be
the equivalent resistance if they connected in parallel.
12. a) State one difference between kilowatt and kilowatt hour, Express
1kWh in Joules.
b) A bulb is rated SV. 500 mA. Calculate the rated power and
resistance of the bulb when it glows.
13. Write the chemical equation of the reaction with an example of each
when the following change has taken place.
Change in colour
b. Formation of precipitate.
OR
Write chemical formula of baking soda. How is baking soda
prepared? Write the reaction which takes place when it is heated during
cooking.
14. List four characteristics of the image formed by convex mirrors.
OR
a) The refractive index of diamond is 2.42. What is the meaning of
this statement.
b) A ray of light incident on a rectangular glass slab immersed in any
medium emerges parallel to itself. Justify With diagram
15. How is composition of Lymph different from blood plasma?
16. Draw a well labeled diagram of Open stomata and describe opening
and closing process of stomata.
OR
Draw a well labeled diagram of human heart and write importance
of having four chambered.​

Answer 1

Answer:

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