TS 10th Class Physical Science Question Paper June 2023

Timed practice with TS 10th Class Physical Science Model Papers and TS 10th Class Physical Science Question Paper June 2023 is crucial for improving speed and efficiency during exams.

TS 10th Class Physical Science Question Paper June 2023

Parts – A and B

Time: 1 Hour 30 min.
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.
Mention the ohmic and non-ohmic conductors used in day to day life.
Answer:
a. The ohmic conductors like copper and aluminium are used as electric wires,
b. Non-ohmic conductors like silicon and Germanium are used in semi conductors.

Question 2.
Draw the Lewis electron dot structure for the Nitrogen and Chlorine atoms.
Answer:

Question 3.
What would happen if chemical equation is not balanced?
Answer:
If not balanaced chemical reactions are not obey law of conservation of mass. So, the total number of atoms of each element in the reactants not to be equal to the total number of atoms of each element in the products. So, we should have to balance a chemical equation.

Section – II (3 × 4 = 12)

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.
Observe the given electronic configuration of orbital diagrams of elements and answer the following questions.

i) Which of the given electronic configuration of element is violating Hund’s rule?
Answer:
B

ii) Mention the inert gas element from the given configuration.
Answer:
E

iii) Which of the given indicates Oxygen electronic configuration?
Answer:
C

iv) Mention the valence of element ‘A’.
Answer:
3

Question 5.
Complete the following ray diagram and mention the characteristics of the image.

Answer:

Characteristics of the image:
a. The object is in between focus and optic centre.
b. The image is virtual, erect and magnified.

Question 6.
Write the uses of ‘Bleaching powder’ in day to day life.
Answer:
Uses of Bleaching powder:
a. It is used for bleaching cotton and linen in the textile industry, for bleaching wood pulp in paper industry and for bleaching washed clothes in laundry.
b. Used as an oxidizing agent in many chemical industries.
c. Used for disinfecting drinking water to make it free of germs.
d. Used as a reagent in the preparation of chloroform.

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 cleansing action of soap to remove dirt from clothes.
Answer:
a. Soaps and detergents make oil and dirt present on the cloth come out into water, thereby making the cloth clean.
b. Soap has one polar end and non-polar end.

c. The polar end is hydrophilic in nature and this end is attracted towards water.
d. The non- polar end is hydrophobic, in nature and it is attracted towards grease or oil on the cloth, but not attracted towards water.
e. When soap is dissolved in water, its hydrophobic ends attach themselves to dirt and remove it from the cloth.
f. The hydrophobic end of the soap molecules move towards the dirt or grease particles.
g. The hydrophobic ends attach to the dirt particle and try to pull out.

h. The molecules of soap surround the dirt particle at the centre of the cluster and form a spherical structure called micelle.
i. These micelles remain suspended in water like particles in a colloidal solution.
j. The various micelles present in water do not come together to form a precipitate as each micelle repels the other because of the ion-ion repulsion.
k. Thus, the dust particles remain trapped in micelles and are easily rinsed away with water.
l. Hence, soap micelles remove dirt by dissolving in water.

Question 8.
List out the material required to conduct Oersted experiment with precautions and explain the experimehtal procedure.
Answer:
List of material required for Oersted experiment: A thermocol sheet, two small sticks, insulated copper wires, 9V battery, switch, magnetic compass.

Precautions to be taken are
a. Copper wire is made through the slits of the wooden sticks tightly.
b. Arrange / complete the circuit correctly.

Procedure:
a. Take a thermocol sheet and fix two thin wooden sticks of height 1 cm which have small slit at the top of their ends.
b. Arrange a copper wire so that it passes through these slits and make a circuit.
c. This circuit consists of a 9V battery, key and copper wires connected in series.
d. Now, keep a magnetic compass below the wire.
e. Now switch on the circuit and observe the compass needle.
g. Change the directions of current and observe the compass needle.

Observations:
a. When Gurrent is passed through circuit, we observe deflection of compass needle in one direction.
b. When the direction of current is changed, the compass needle deflects in another direction.
c. From the above experiment I understand that a current carrying conductor possesses, magnetic field around it.

Question 9.
Mention the influencing factors of Ionization energy and explain.
Answer:
Influencing factors of Ionization Energy:
a. Nuclear charge
b. Screening effect or shielding effect
c. Penetrating power of the orbitals
d. Stable electronic configuration
e. Atomic radius

a. Nuclear charge : More the nuclear charge, more is the ionization energy.
b. Screening effect or shielding effect: More screening or shield effect, less is the ionization energy.
c. Penetrating power of the orbitals: More penetrating power, more is the ionization energy.
d. Stable electronic configuration : The orbitals of atom are fully or half filled, the ionization energy is high.
e. Atomic radius : More the atomic radius, less is the ionization energy. Ionization energy of elements decreases as we go down in group and generally increases from left to right in a period.

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 apparatus is not used in the experiment to find focal length of Concave mirror? ( )
A) Candle
B) Meter scale
C) V – stand
D) Prism
Answer:
D) Prism

Question 2.
How many moles of Oxygen will be required to burn 20 moles of Hydrogen according to following question?
2H₂ + O₂ → 2H₂O
A) 10 moles
B) 15 moles
C) 20 moles
D) 25 moles
Answer:
A) 10 moles

Question 3.
Which of the following substance is used in place of HCl in the experiment reaction of carbonates with acids? ( )
A) NaOH
B) H₂O
C) H₂SO₄
D) KOH
Answer:
C) H₂SO₄

Question 4.
Identify Plano Convex lens in the following. ( )

Answer:

Question 5.
In which of the following, Baking soda is used? ( )
A) To remove hardness of water.
B) Glass and paper industry.
C) To prepare cakes.
D) In household detergents.
Answer:
C) To prepare cakes.

Question 6.
Electron configuration of “Cr” atom. ( )
A) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁴
B) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵
C) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵
D) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶
Answer:
B) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵

Question 7.
Correct reactive series from the following. ( )
A) M > Cu > Ag
B) Cu > Al > Ag
C) Al > Ag > Cu
D) Cu > Ag > Al
Answer:
A) M > Cu > Ag

Question 8.
2Ω, 3Ω, 5Ω resistors are connected in series. The equivalent resistance is ( )
A) 10 Ω.
B) 5Ω
C) 3Ω
D) 2Ω
Answer:
A) 10 Ω.

Question 9.
Which of the following classification of elements is based on atomic numbers? ( )
A) Mendeleev’s Periodic Table
B) Modern Periodic Table
C) Newland’s law of Octaves
D) Dobereiner’s traids
Answer:
B) Modern Periodic Table

10. Which of the following is used for the correction of Myopia? ( )
A) Convex lens
B) Concave lens
C) Convex Mirror
D) Concave Mirror
Answer:
B) Concave lens