CBSE Class 12 Air Conditioning Refrigeration Question Paper 2023 with Answer Key (March 22)

CBSE Class 12 2023 Air Conditioning Refrigeration Question Paper with Answer Key pdf is available for download here. The exam was conducted by Central Board of Secondary Education on March 22, 2023. The question paper comprised a total of 24 questions divided among 2 sections.

CBSE Class 12 Air Conditioning Refrigeration Question Paper 2023 with Answer Key

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CBSE Class 12 Previous Year Question Papers

CBSE Question Paper 2022	CBSE Question Paper 2020	CBSE Question Paper 2019
CBSE Question Paper 2018	CBSE Question Paper 2017	CBSE Question Paper 2016

CBSE CLASS XII Questions

1.
The books of Mehul and Barkha showed that their capital employed on 31st March, 2025 was Rs 6,00,000. If the normal profits are Rs 60,000 and super profits are Rs 20,000, then the normal rate of return is:

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2.
An electron is revolving around a proton in a circular orbit of radius $r$. Using classical physics, prove that the ratio of value of the angular momentum and the value of magnetic moment of electron revolving in the orbit is a constant.

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3.
Identify the parts P, Q, R, S in the figure given below and select the option in the correct order.

P - Seed, Q - Thalamus, R - Mesocarp, S - Endocarp
P - Thalamus, Q - Seed, R - Endocarp, S - Mesocarp
P - Seed, Q - Thalamus, R - Endocarp, S - Mesocarp
P - Thalamus, Q - Seed, R - Mesocarp, S - Endocarp

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4.
The number of free electrons per unit volume ($\text{m}^3$) in a wire made of copper (resistivity $1.72 \times 10^{-8}\,\Omega\,\text{m}$) is $8.5 \times 10^{28}$. Calculate the average number of collisions made by an electron in one second when an electric field is maintained in the wire.

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5.
Draw the structure of 'X' in the following reaction:

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6.
Write the name of basic building units of proteins and nucleic acids. How can you differentiate between Fibrous and Globular proteins on the basis of their structures ?

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CBSE Class 12 Air Conditioning Refrigeration Question Paper 2023 with Answer Key (March 22)

CBSE Class 12 Air Conditioning Refrigeration Question Paper 2023 with Answer Key

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.
The books of Mehul and Barkha showed that their capital employed on 31st March, 2025 was Rs 6,00,000. If the normal profits are Rs 60,000 and super profits are Rs 20,000, then the normal rate of return is:

2.
An electron is revolving around a proton in a circular orbit of radius $r$. Using classical physics, prove that the ratio of value of the angular momentum and the value of magnetic moment of electron revolving in the orbit is a constant.

3.
Identify the parts P, Q, R, S in the figure given below and select the option in the correct order.

4.
The number of free electrons per unit volume ($\text{m}^3$) in a wire made of copper (resistivity $1.72 \times 10^{-8}\,\Omega\,\text{m}$) is $8.5 \times 10^{28}$. Calculate the average number of collisions made by an electron in one second when an electric field is maintained in the wire.

5.
Draw the structure of 'X' in the following reaction:

6.
Write the name of basic building units of proteins and nucleic acids. How can you differentiate between Fibrous and Globular proteins on the basis of their structures ?

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CBSE Class 12 Air Conditioning Refrigeration Question Paper 2023 with Answer Key

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.The books of Mehul and Barkha showed that their capital employed on 31st March, 2025 was Rs 6,00,000. If the normal profits are Rs 60,000 and super profits are Rs 20,000, then the normal rate of return is:

2.An electron is revolving around a proton in a circular orbit of radius $r$. Using classical physics, prove that the ratio of value of the angular momentum and the value of magnetic moment of electron revolving in the orbit is a constant.

3.Identify the parts P, Q, R, S in the figure given below and select the option in the correct order.

4.The number of free electrons per unit volume ($\text{m}^3$) in a wire made of copper (resistivity $1.72 \times 10^{-8}\,\Omega\,\text{m}$) is $8.5 \times 10^{28}$. Calculate the average number of collisions made by an electron in one second when an electric field is maintained in the wire.

5.Draw the structure of 'X' in the following reaction:

6.Write the name of basic building units of proteins and nucleic acids. How can you differentiate between Fibrous and Globular proteins on the basis of their structures ?

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1.
The books of Mehul and Barkha showed that their capital employed on 31st March, 2025 was Rs 6,00,000. If the normal profits are Rs 60,000 and super profits are Rs 20,000, then the normal rate of return is:

2.
An electron is revolving around a proton in a circular orbit of radius $r$. Using classical physics, prove that the ratio of value of the angular momentum and the value of magnetic moment of electron revolving in the orbit is a constant.

3.
Identify the parts P, Q, R, S in the figure given below and select the option in the correct order.

4.
The number of free electrons per unit volume ($\text{m}^3$) in a wire made of copper (resistivity $1.72 \times 10^{-8}\,\Omega\,\text{m}$) is $8.5 \times 10^{28}$. Calculate the average number of collisions made by an electron in one second when an electric field is maintained in the wire.

5.
Draw the structure of 'X' in the following reaction:

6.
Write the name of basic building units of proteins and nucleic acids. How can you differentiate between Fibrous and Globular proteins on the basis of their structures ?