Solved Model Question Paper for Class 12th Political Science (2023) NCERT/CBSE 

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Question: Describe the formation and objective of UPA?
Answer: The United Progressive Alliance (UPA) is a coalition of political parties in India formed after the 2004 general election. It was formed at the initiative of the Indian National Congress (INC) and comprised several other left-leaning parties and regional parties.
The main objective of UPA is to provide a stable and progressive government that can take India to new heights of growth and development. The UPA also focuses on creating jobs, providing better healthcare, education, and infrastructure, and ensuring the safety and security of all citizens. Additionally

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Solved Model Question Paper for Class12th Political Science (2023) NCERT/CBSE

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Question: What do you understand by sustainable development? What was the outcome of the Rio summit? 4 Marks
Answer: Sustainable development is a concept that calls for the development of strategies and policies that meet the needs of the present without compromising the ability of future generations to meet their own needs. It is based on the idea of creating a balance between economic growth, social progress, and environmental protection.
The outcome of the Rio summit was the adoption of Agenda 21. This is a comprehensive plan of action to be taken globally, nationally and locally by organizations of the United Nations system, governments, and major groups in every area in which human impacts the environment.

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Solved Model Question Paper for Class 12th Political Science NCERT/CBSE (2023)

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Fill in the blanks:

i. ____________ is the present UN Secretary-General.

Answer: António Guterres

ii. Alliance-building is a component of __________ Security.

Answer: Cooperative

iii. Planning Commission was set up in __________.

Answer: 1950

iv. ___________ was the official candidate of congress in the 1969 Presidential election.  

Answer: Indira Gandhi

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Chemistry: Solved Previous Year’s Question Paper for NCERT/CBSE  Class 12th Chemistry Paper Code (HSEIIRKo14–1702—Y)

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Question: How Polythene is prepared
Answer: Polythene is prepared through a process called polymerization. This process involves the combination of two or more monomers (small molecules) to create a larger molecule. The monomers used to create polythene are typically ethylene, which is derived from natural gas or petroleum and can be combined through a variety of different methods. The result is a plastic that is lightweight, yet strong and durable.

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Chemistry: Solved Previous Year’s Question Paper for NCERT/CBSE  Class 12th Chemistry Paper Code (HSEIIRKo14–1702—Y)

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Question: Why detergents are preferred over soaps?
Answer: Detergents are preferred over soaps because they are more effective in removing dirt, grease, and other stains. Detergents are also more effective at low temperatures, while soaps are less effective. Detergents are also less prone to forming scum on fabric or surfaces, and they often contain fewer harsh chemicals than soaps.

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Chemistry: Solved Previous Year’s Question Paper for NCERT/CBSE Class12th

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Give the electronic configuration of group 16 elements.
Answer: The group 16 elements of the periodic table are oxygen, sulfur, selenium, tellurium, and polonium.
The electronic configuration of each element is as follows:
Oxygen: [He] 2s2 2p4
Sulfur: [Ne] 3s2 3p4
Selenium: [Ar] 3d10 4s2 4p4
Tellurium: [Kr] 4d10 5s2 5p4
Polonium: [Xe] 4f14 5d10 6s2 6p4

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Chemistry: Solved Previous Year’s Question Paper for NCERT/CBSE  Class 12th Chemistry Paper Code (HSEIIRKN15–6417—X)

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Question: How is activation Energy affected by the rise in temperature?
Answer: As temperature rises, activation energy is lowered. This means that reactions will occur faster as temperature increases, as less energy is required to initiate the reaction.

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Chemistry: Solved Previous Year’s Question Paper for NCERT/CBSE  Class 12th Chemistry Paper Code (XIIRKN16–11020—X)

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Question:  Why are artificial sweetening agents needed? Give two examples

Answer: Artificial sweetening agents are needed because they provide a sweet taste to food and beverages without the added calories or health risks associated with consuming large amounts of sugar. Examples include aspartame and sucralose.

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Chemistry: Solved Previous Year’s Question Paper for NCERT/CBSE  Class 12th Chemistry Paper Code (HSEIIRKON17 15319—A)

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Distinguish between ideal and non-ideal solutions.
Answer: An ideal solution is a solution that is composed of two or more substances, where all of the substances are completely dissolved and form a homogeneous mixture.
A non-ideal solution is composed of two or more substances, but the components do not mix completely, and the solution is not homogeneous.

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