AP SSC 10th class General Science Model paper 2015-16 English Medium Set 9

Section I

Group – A
1.Write the differences between evaporation and boiling ?
2.Do you know the reason for appearance the red colour of sun during sunrise and at sunset ?
3.What are the conditions for total internal reflection ?
4.The value of magnetic field induction which is uniform is 2T. What is the flux passing through a surface area 1.5 m2 perpendicular to the field ?

Group – B
5.Write the importance of pH in our digestive system ?
6.How does metallic character change when we move .
a) down a group ? b) across a period ?
7.Write down the characteristics of the element having atomic number 7 ?
a) Period number
b) Group number
c) Element family                                                                       ‘
d) of valency electrons
8. Appreciate the roll of catenation in the versatile nature of carbon ?

Section II

9. Why do we get dew on the surface of a cold soft drink bottle kept in open air ?
10. What is the I2 value in the given circuit ?
11. Are the magnetic field lines closed ? Explain.
12. Give four examples of salts of chloride family ?
13. Fresh milk has a pH of 6. What happens to pH if it turns to curd ? Give reason.
14. How do you appreciate the markings (writings) of a pencil on a paper ?

Section III

Group A

15. Answer these
a) How much energy is transferred when 1 gm. of boiling water at 100 °C condenses to water at 100 °C ?
b) How much energy is transferred when 1 gm. of boiling water at 100 °C cools to water  at 0 ° ?
c) How much energy is released or absorbed when 1 gm of water at 0 °C freezes to ice at 0 °C ?
d) How much energy is released or absorbed when 1 gm. of steam at 100 °C turns to ice at 0 °C ?
16. A double covex lens nas two surfaces of equal radii ‘R’ and refractive index n = 1.5. Find the focal length ?               .
17. How does a battery work ? Explain.
18. How do you appreciate Faraday’s Law which is the consequence of conservation of energy ?

Group B
19.  Explain the rules to be followed for writing the electronic configuration of element  having more than one electron ?
20. A chemical compound has the following Lewis notation.

  1. How many valence electrons done element ‘Y’ have ?
  2. What is the valency of element ‘Y’ ?
  3. What is the valency of element ‘X’ ?
  4. How many covalent bonds are there in the molecule ?
  5. Suggest a name for the elements X and Y.

21. Explain the methods in the purification of the crude metal ?
22. Write short notes on each of  the following a) Nanotubes b) Graphene

Section IV

23. Draw a ray diagrams for the correction of Myopia and Hypermetropia ?
24. Draw a neat diagram of electrolysis of water and label the parts.

Part B


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