AP – SSC Physical Sciences

AP 10th Class Physical Sciences Practice Questions with Answers

by

Important Questions and Answers
Q: Sketch the diagram of a Nuclear Reactor showing various parts. (5 Marks)
A: Parts: 1. Fuel rods; 2. Moderator (Water); 3. Control rods; P: Pump; H.E: Heat exchange part; S: Exit for steam; W: Inlet for
water; Sh: Lead chamber; RC: Reactor core

Q: Draw a neat diagram showing the extraction of Magnesium from its ore and label its various parts. (5 Marks)
A: Parts: 1. Iron cell; 2. Magnesium; 3. Graphite anode; 4. Porcelain hood; 5. Iron cathode; 6. Coal gas; 7. Chlorine; 8. Coal
gas; 9. Molten electrolyte

Q: State the properties and uses of a junction diode. (4 Marks)
A: Properties of p-n junction diode: 1. A p-n junction diode conducts electricity in forward bias condition and offers low resistance for current flow.
2. In the reverse bias condition, it offers a high resistance and no current flows in the circuit. Uses of p-n junction diode: 3. A p-n junction diode can be used as an electronic switch.
4. In a rectifier circuit, a p-n junction diode is used to convert Alternating Current (AC) in to Direct Current (DC). This conversion is utilized in power supply devices found in electronic appliances such as TV, radio, computers, tape recorders etc.
5. Certain p-n diodes glow on supply of electricity. Such diodes are called Light Emitting Diodes (LEDs). These are used in digital
clocks and digital (electronic) calculators.

Q: How do you test the quality of a soap? (4 Marks)
A: Soap is a Sodium or Potassium salts of fatty acids of long carbon
chains (or) soaps are salts of fatty acids.
Testing: 1. Dissolve 1.5 gm. of soap in 100 ml of distilled or soft water.
2. Take 10 ml of this soap solution in a boiling test tube.
3. Close the tube with a rubber stopper and shake vigorously for 15 seconds. Allow the solution to stand for 30 seconds. Observe the
level of foam.
4. Perform the same experiment on different kinds of soaps available in the market. A good soap is that which gives the largest
lather or of greatest height.

Q: State the characteristics of simple harmonic motion. (2 Marks)
A: The characteristics of SHM are 1. The motion of the particle
is vibratory about a mean position.
2. The acceleration of the particle is always directed towards the mean position. 3. The magnitude of acceleration (a) is directly proportional to the displacement (x) of the particle from its equilibrium position i.e.: a ∝ −x.

Q: Define Resonance. (1 Mark)
A: Resonance is the phenomenon in which if one of the two bodies of the same natural frequency is set into vibrations, the other body also vibrates under the influence of the first body.

Q: Write the Pauli’s exclusion principle. (1 Mark)
A: 1. No two electrons will have all the four quantum numbers equal.
2. In an orbital, maximum number of electrons are 2.

I. Fill in the blanks with suitable word or words (1/2 Mark each)
1. When a body is projected towards the earth, the acceleration due to gravity is taken as….
2. The susceptibility (x) of a diamagnetic substance is ….
3. Particles undergo maximum displacement at ….. in a stationary wave.
4. The equivalent resistance of two resistors 6Ω, 12Ω when connected in series is …..
5. The unit of self inductance is …..
6. The colour of methyl orange indicator in acidic medium is …..
7. Chief component of cooking gas is ….
8. …. metal gives peroxide in addition to oxide when burnt in excess of oxygen.
9. The number of subshells present in L- shell are ….
10. H2SO4 + Ca(OH)2 → …… + H2O
II. Match the following. (1/2 Mark each) Group A Group B
1. Atomic number ( ) A) Stability of atom
2. Moss defect ( ) B) amu
3. Mass number ( ) C) Number of protons
4. Unit of atomic ( ) D) Ev mass
5. Unit of energy ( ) E) Sum of the number of protons and neutrons

Answers: I. 1) positive 2) very low and negative 3) antinode 4) 18 Ω 5) Henry 6) Red 7) Butane 8) Barium 9) 2 10) CaSO4.
II. 1-C; 2-A; 3-E; 4-B; 5-D.

AP 10th Class Physical Sciences Model Paper – English Medium

by

SECTION – I
Note: 1. Answer any FIVE questions, choosing at least TWO from each group.
2. Each question carries TWO marks. 5 × 2 = 10

Group – A
1. Define positive zero error and least count of a screw gauge.
2. Write differences between mass and weight.
3. What are the uses of radio isotopes?
4. What is centrifuge? How does it work?

Group – B
5. Mention any two demerits of Bohr’s model of atom.
6. What are functions of proteins?
7. Mention any four industrial uses of oils and fats.
8. Write differences between alkanes and alkenes.

SECTION – II
Note: 1. Answer any FOUR questions among the following.
2. Each question carries ONE mark. 4 × 1 = 4

9. What is the maximum height reached by a body, when it is thrown up vertically with an initial velocity of 10 m/ s? (g = 10m/ s2)
10. Write any two uses of infra red rays.
11. State inverse square law of magnetism.
12. State Mendeleev’s periodic law.
13. Why do we add KCl and NaCl2 during Mg extraction?
14. The H+ ion concentration of a solution is 0.0001M. Find its pH.

SECTION – III
Note: 1. Answer any FOUR questions, choosing at least TWO from each group.
2. Each question carries FOUR marks. 4 × 4 = 16

Group – A
15. Describe a ripple tank. How does it help in understanding
reflection and refraction of light?
16. Write differences between a progressive wave and a stationary
wave.
17. Derive Q = i2Rt/J.
18. Describe the formation of p-type and n-type semiconductors.

Group – B
19. Define acids and bases as per Arrhenius theory and write any two defects of the theory.
20. Explain the formation of co-ordinate covalent bond with an example.
21. 4 gms of NaOH (mol.wt = 40) is dissolved in 34.2 gms of water (mol.wt = 18). Find the mole fractions of NaOH and water.
22. Define drug and mention the requirements that an ideal drug should satisfy.

SECTION – IV
Note: 1. Answer any ONE of the following questions.
2. This question carries FIVE marks. 1 × 5 = 5

23. Draw a neat diagram of a nuclear reactor and label the parts.
24. Draw a neat diagram to show the extraction of Mg.

PART – B
Note: 1) Answer all questions
2) Each question carries 1/2 mark
3) Candidates must use the capital letters while answering
the multiple choice questions
4) Marks will not be awarded in case of any overwriting or
rewriting or erased answers.

I. Multiple choice questions:
1. Units of ‘G’ in S.I. system [ ]
A. Nm2Kg-2 B. N/kg
C. kg/Nm2 D. Nm2/kg
2. The velocity of a body when it is dropped from height ‘h’ on
reaching the earth is [ ]
A. u2/2g B. u/g C. 2gh D. √2hg
3. Electromagnetic radiations with shortest wave length are [ ]
A. Infra red rays B. gamma rays
C. ultraviolet rays D. X-rays
4. Lumen is the unit of [ ]
A. luminous flux B. solid angle
C. luminous intensity D. candle power
5. One K.W.H. = [ ]
A. 36×103 watt. sec. B. 36×1010 watt. sec
C. 36×108 watt. sec. D. 36×105 watt. sec.
6. The number of ‘m’ values for l = 3 is [ ]
A. 7 B. 4 C. 2 D. 3
7. Carnalite is [ ]
A. MgCO3, CaCO3 B. MgCl2, KCl, 6H2O
C. CaSO4, 3H2O D. MgCO3, 2H2O
8. If the pH of a solution is 6, its [H+] is [ ]
A. log 10-6 B. 106 C. 10-6 D. 6
9. This is present in Benedict solution [ ]
A. silver nitrate B. copper carbonate
C. copper oxide D. copper sulphate
10. Chromophore [ ]
A. binds the dye to the fibre B. soaks the cloth
C. imparts colour to the dye
D. intensifies the colour of the dye
II. Fill in the blanks.
11. The scale that is market on index line is called —.
12. Centre seeking force is called —.
13. Oscillations that take place under the influence of external
periodic force are called —.
14. The relationship between magnetic flux density (B), and
intensity of magnetic field (H) is —.
15. The camera that contains cathode rays and photocells is
known as —.
16. Sixth period in a periodic table has — elements.
17. Some substances such as sucrose, glucose etc., when dissolved
in water do not decompose into ions. These substances
are called —.
18. The presence of alcoholic functional group is tested by addition
of — metal.
19. — enzyme breaks the glucose molecule.
20. Azimuthal quantum number (I) gives the — of sub-shell or
orbital.
III. Match the following:
1) Physics
Group – A Group – B
21. Velocity of sound in air [ ] A) W/q
22. Angular momentum (L) [ ] B) v.i.t/J
23. Quantity of heat [ ] C) √ϒ.P/ρ
24. Magnetic field induction [ ] D) m.ω.r2
25. potential difference [ ] E) √P/ ϒρ
F) m.ω2.r
G) μ0.m/4πr2
2) Chemistry
Group-A Group-B
26. pentene [ ] A) C8H16
27. Octane [ ] B) -COOR
28. Butyne [ ] C) -CHO
29. Ester [ ] D) -C5H12
30. Aldehyde [ ] E) C8H18
F) C5H10
G) C4H6

error: Content is protected !!