guess paper 10th physical science

PHYSICAL SCIENCES
Guess** Paper I Parts A and B
Time: 2 Hours Maximum Marks: 35

SECTION-I
5X2 = 10
Note: 1. Answer ANY FIVE questions choosing at least TWO from each of the following groups, i.e., Groups A & B.
2. Each question carries 2 marks.
Group-A
1. What is a centrifuge? How does it work?
2. Draw the diagram of propagation of electromagnetic wave?
3. What is the effect of temperature on energy gap of a conductor?
4. What are the characteristics of a computer?

Group ‘B’

5. Why electron enters into 4s orbital but not 3d after filling 3p orbital?
6. Draw the shapes of a) H20, b) PCl5.
7. Naphthalene is soluble in kerosene but not in water give reason?
8. Define a) cold cream b) adhesive.

SECTION – II

Note: 1. Answer any Four of the following six questions. 4X1 = 4
2. Each question carries 1 mark.

9. What is simple harmonic motion?
10. What are nodes and antinodes?
11. State Hund’s rule.
12. Mention any two languages of a computer?
13. Why are NaCl and KCl added to magnesium in the preparation of magnesium?
14. What is pH of a solution?
or
What are primary nutrients?
SECTION – III

Note: 1. Answer any Four questions, choosing Two from each of the following groups.
2. Each question carries 4 marks.
Group ‘A’ 4X4 = 16

15. Give the comparison between Newton’s Corpuscular Theory and wave theory of light?
16. Derive 1/R = 1/R1 + 1/R2 + 1/R3?

17. Explain the construction and working of a Nuclear Reactor with a labeled diagram.

18. What are the basic principles of Radio and TV working?

Group ‘B’

19. Explain the formation of Triple Bond in Nitrogen?
20. How is magnesium extracted from Magnesite?
21. Write about four quantum numbers?
22. What are the structural features of dyes?

SECTION –IV (Marks: 1 x 5=5)

Note: 1. Answer Any One question from the following.
2. Each question carries 5 marks.

23. Draw the diagram of television broad casting.

24. Draw the diagram of manufacture of sugar in industry/ Moeller diagram.

** This paper is only for practice, made out of several years of experience in teaching 10th class physical sciences. This is only for the reference of the students during revision.