TS 10th Class Physical Science Question Paper June 2024

Timed practice with TS 10th Class Physical Science Model Papers and TS 10th Class Physical Science Question Paper June 2024 is crucial for improving speed and efficiency during exams.

TS 10th Class Physical Science Question Paper June 2024

Parts – A and B

Time: 1 : 30 hrs.
Max. Marks: 40

Instructions :

1. Read the question paper and understand every question thoroughly and write answers in given 1 hr. 30 min. time.
2. 3 very short answer questions are there in section -1. Each question carries 2 marks. Answer all the questions. Write answer to each question in 3 to 4 sentences.
3. 3 short answer questions are there in section – II. Each question carries 4 marks. Answer all the questions. Write answer to each question in 5 to 6 sentences.
4. 3 essay type answer questions are there in section – III. Each question carries 6 marks. Answer any two questions. Write answer to each question in 8 to 10 sentences.

Part – A
Section – I (3 × 2 = 6 M)

Time: 1.15 hrs.
Marks: 30

Instructions :
i) Answer all the questions.
ii) Each question carries 2 marks.
iii) Write answer to each question in 3 to 4 sentences

Question 1.
Write any four daily life applications of Faraday’s law of electromagnetic induction.
Answer:
a) Transformers are works on the principle of electromagnetic induction.
b) Electrical generators work on the principle of electromagnetic induction.
c) Security check at airports. Railwtay stations.
d) Tape recorders used to record voices or listen to songs work on the principle of electromagnetic induction.
e) ATM cards and swiping machines are also the application of the law of electromagnetic induction.

Question 2.
List out the apparatus used in the experiment to observe types of images and measuring the object distance and image distance from a convex lens.
Answer:
List of apparatus: Convex lens, meter scales, v stand, screen, candle, etc,

Question 3.
What happens, if Sulphuric acid (H₂SO₄) is used instead of Hydrochloric acid (HCl) in the experiment of “acids reacts with metals”?
Answer:
When sulphuric acid is used instead of hydrochloric acid in an experiment that reacts metals with acids, the type of salt produced differs :

Sulphuric acid: Produces sulphate salts. For example, when magnesium reacts with sulphuric acid, it produces magnesium sulphate and hydrogen.

Hydrochloric acid: Produces chloride salts.
For example, magnesium reacts with hydrochloric acid and produces magensium chloride and hydrogen.

Section – II (3 × 4 = 12 M)

Instructions :
i) Answer all the questions.
ii) Each question carries 4 marks.
iii) Write answer to each question in 5 to 6 sentences.

Question 4.
Explain Aufbau principle with an example.
Answer:
Aufbau principle : The lowest – energy orbitals are filled first.

In terms of quantum numbers :
a) Electrons are assigned to orbitals in order of increasing value of (n + l),
b) For sub – shells with the same value of (n + l), electrons are assigned first to the sub-shell with lower’n’.

Example:

1. In hydrogen, the first electron enters the lowest energy orbital. H = 1s¹.
2. In potassium, the last electron enters into 4s instead of 3d. Because (n + l) value of 4s is less than (n + l) value of 3d. K – 1s² 2s² 2p⁶⁶ 3s² 3p⁶ 4s¹
3. In scandium, the last electron enters into 3d instead of 4p. The reason for this is that although the (n + l) values of 4p and 3d are equal, the value of n is minimum for the 3d orbital, so the electron enters into the 3d orbital.
4. Sc = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹

Orbital	n	1	(n + l)
4p	4	1	4 + 1 = 5
3d	3	2	3 + 2 = 5

Question 5.
Write any four daily life uses of lenses.
Answer:
Uses of Convex lens:

1. Convex lens is used in microscopes and magnifying glasses to subject all the light to a specific point.
2. Convex lens is used as a camera lens in cameras as they focus, light for a clear picture.
3. Convex lens is used in the correction of hypermetropia.

Uses of Concave lens :

1. They’re used in binoculars and telescopes.
2. They are used as peepholes in doors.
3. They’re found in flashlights, cameras and other electronic devices.
4. They are used in the correction of Myopia.

Section – III (2 × 6 = 12)

Question 6.
Observe the following table and answer the questions.

Name of the Ore	Formula
1. Bauxite	Al2O3 2H2O
2 Zinc blende	ZnS
3 Epsom salt	MgSO4. 7H2O
4 Cinnabar	HgS
5 Rock salt	NaCl
6 Pyrolusite	MnO2
7 Galena	PbS

i) Which ores are oxides among the table?
Answer:
Bauxite and Pyrolusite.

ii) How many Sulphate ores are there ¡n the given table ? What are they?
Answer:
1 that is Epsom salt.

iii) Which ores are concentrated by froth flotation methbd in the given table?
Answer:
Sulphate ores.

iv) Which ores are extracted by electrolysis method in the given table?
Answer:
Rock salt.

Section – III  (2 × 6 = 12 M)

Instructions :
i) Answer any two questions.
ii) Each question carries 6 marks.
iii) Write answer to each question in 8 to 10 sentences.

Question 7.
Explain the experimental procedure to show \(\frac{\mathrm{V}}{\mathrm{I}}\), is constant for a conductor and mention the precautions.
Answer:
Aim: To show that the ratio \(\frac{\mathrm{V}}{\mathrm{I}}\) is a constant for a conductor.
Materials required: 5 dry cells of 1.5 V each, conducting wires, an ammeter, a volt meter, thin iron spoke of length 10 cm, etc.

Procedure:

1. Connect a circuit as shown in the figure.
2. Solder the conducting wires to the ends of the iron spoke.
3. Close the key. Note the readings of current (I) from ammeter and potential difference (V) from volt meter in table.
4. Now connect two cells in series instead of one cell in the circuit.
5. Note the respective readings of the ammeter and volt meter and record the values in table.
6. Repeat the same for three cells, four cells and five cells respectively.
7. Record the values of potential difference (V) and current (I) corresponding to each case in the table.
   

   Potential difference (v)	Electric Current (I)	V/I

8. Find \(\frac{\mathrm{V}}{\mathrm{I}}\) for each set of values. Draw a graph between V and I taking the current (I) along Y – axis and potential difference (V) along X-axis with appropirate scale.

Result:
• V ∝ I
• The potential difference between the ends of a conductor is di proportional to the electric current passing through it at a constant temperature.

Precautions:
A) Use copper wires as thin as possible for making connections.
B) All the connections should be kept tight.
C) The positive and negative terminals of the voltmeter and the ammeter should be correctly

Question 8.
Draw the diagram which shows Hypermetropia defect in human eye and also draw its correction.
Answer:

Question 9.
Explain how does the periodic properties of elements of ionization energy and atomic size changes in Groups and Periods in the Modern Periodic Table.
Answer:
a) Atomic radius: Atomic radius of an element may be defined as the distance from the centre of the nucleus of the atom to its outermost shell.

1. In Period: The atomic radius of elements decreases across a period from left to right because the nuclear charge increase due to an increase in atomic number.
2. In Group : Atomic radius increases from top to bottom in a group due to the addition of a new shell.

b) Ionization Energy: The energy required to remove an electron from the outermost orbit or shell of a neutral gaseous atom is called ionization energy.

1. In Period: When we move from left to right it does not follow a regular trend but generally increases d.ue to an increase in atomic number.
2. In Group: In a group from top to bottom, the ionization energy decreases due to an increase in atomic size.

Part – B

Time: 15 Minutes
Marks: 10

Instructions :
i) Answer all the questions.
ii) Each question carries 1 mark.
iii) There are 4 options A, B, C, D for each question. Select the correct option and write it in the bracket given infornt of the question.
iv) Write the answers of Part – B in Part – B only. And tie it to the answer sheet of Part – A.

Question 1.
Which of the following is not a balanced- chemical equation? ( )

Answer:

Question 2.
At STP how many litres of Hydrogen (H₂) gas evolved, when “4” moles of Hydrochloric acid
(HCI) used in the following chemical reaction? ( )
(Volume of 1 mole Hydrogen gas at STP = 22.4 L)

A) 22.4 L
B) 44.8 L
C) 67.2 L
D) 89.6 L
Answer:
B) 44.8 L

Question 3.
Which of the following molecular shape is incorrect?

Answer:

Question 4.
How many electrons are needed to get Octet configuration for Oxygen element (atom)?
A) 4
B) 3
C) 2
D) 1
Answer:
C) 2

Question 5.
Which of the following apparatus is not used in the Oersted experiment?
A) 9 V – Battery
B) Magnetic compass
C) 24 – gauge copper wire
D) Resistor
Answer:
D) Resistor

Question 6.
IUPAC name for the following Carbon compound is ________

A) Pent -1 – en – 4- o1
B) Pent – 4 – yn – 2 – ol
C) Pent – 4 – en – 2 – ol
D) Pent -1 – yn – 4 – ol
Answer:
C) Pent – 4 – en – 2 – ol

Question 7.
Which of the following Carbon compound is saturated hydrocarbon ?
A) CH₃ – CH₂ – CH₃
B) CH₃ – CH = CH₂
C) CH₃ – C ≡ CH
D)

Answer:
A) CH₃ – CH₂ – CH₃

Question 8.
Which of the following salt is obtained, when Acetic aicd (CH₃COOH) reacts with Sodium hydroxide (NaOH)? ( )
A) NaCl
B) Na₂SO₄
C) CH₃COONa
D) CH₃COOK
Answer:
C) CH₃COONa

Question 9.
In a circuit two resistors of 8 ft, 24 0 are connected in parallel, then the resultant resistance is _______ ( )
A) 4 Ω
B) 8 Ω
C) 24 Ω
D) 6 Ω
Answer:
D) 6 Ω

Question 10.
Magnification of an image formed due to Concave mirror is + 2. Height of the object is ‘4’ cm.
Then the hegiht of the image is ______ ( )
A) 2 cm
B) 4 cm
C) 6 cm
D) 8 cm
Answer:
D) 8 cm