Class 12 English
Q1. What is the central theme of The Last Lesson?
Answer:
The central theme is the importance of one's language, patriotism, and the value of education. The story shows how people realize the importance of their language only when they are about to lose it.
Class 12 Physics
Q2. State Ohm's Law.
Answer:
Ohm's Law states that the current flowing through a conductor is directly proportional to the potential difference across it, provided the temperature remains constant.
Formula:
where:
- V = Potential Difference
- I = Current
- R = Resistance
Class 12 Chemistry
Q3. What is electrolysis?
Answer:
Electrolysis is the process in which electrical energy is used to bring about a chemical reaction in an electrolyte.
Class 12 Biology
Q4. Define DNA.
Answer:
DNA (Deoxyribonucleic Acid) is the hereditary material in most living organisms. It carries genetic information from parents to offspring.
Class 12 Mathematics
Q5. What is the derivative of ?
Answer:
Class 12 Economics
Q6. What is GDP?
Answer:
Gross Domestic Product (GDP) is the total market value of all final goods and services produced within a country during a specific period, usually one year.
Class 12 Business Studies
Q7. What is planning?
Answer:
Planning is the process of deciding in advance what is to be done, how it is to be done, when it is to be done, and by whom.
Class 12 Accountancy
Q8. What is depreciation?
Answer:
Depreciation is the gradual decrease in the value of a fixed asset due to wear and tear, usage, or the passage of time.
Class 12 Political Science
Q9. What is democracy?
Answer:
Democracy is a form of government in which the people elect their representatives through free and fair elections.
Class 12 History
Q10. What was the main objective of the Quit India Movement?
Answer:
The main objective of the Quit India Movement (1942) was to demand an immediate end to British rule in India and achieve complete independence.
English
1. What is the message of Lost Spring?
Answer: The chapter highlights child labour, poverty, and the importance of education in breaking the cycle of poverty.
2. Why did Gandhiji go to Champaran?
Answer: He went to help the indigo farmers who were being exploited by British landlords.
3. What is the theme of My Mother at Sixty-Six?
Answer: The poem expresses the poet's fear of losing her mother and the pain of aging.
4. What lesson does Deep Water teach?
Answer: It teaches that fear can be overcome through determination, practice, and courage.
5. Why is Aunt Jennifer afraid?
Answer: She is afraid because of the domination and burden of her married life.
Physics
6. What is electric current?
Answer: Electric current is the rate of flow of electric charge through a conductor.
7. Define resistance.
Answer: Resistance is the opposition offered by a conductor to the flow of electric current.
8. What is electromagnetic induction?
Answer: It is the phenomenon of inducing an emf when the magnetic flux linked with a conductor changes.
9. State Faraday's First Law.
Answer: Whenever the magnetic flux linked with a circuit changes, an emf is induced in the circuit.
10. What is a transformer?
Answer: A transformer is a device used to increase or decrease AC voltage.
Chemistry
11. What is a catalyst?
Answer: A catalyst is a substance that changes the rate of a chemical reaction without being consumed.
12. What are polymers?
Answer: Polymers are large molecules formed by joining many small monomer units.
13. What is electrochemical corrosion?
Answer: It is the gradual destruction of metals due to chemical or electrochemical reactions with the environment.
14. Define pH.
Answer: pH is the negative logarithm of the hydrogen ion concentration of a solution.
15. What are amino acids?
Answer: Amino acids are organic compounds containing both amino and carboxyl groups.
Biology
16. What is biotechnology?
Answer: Biotechnology is the use of living organisms or biological systems to develop useful products.
17. What is a vaccine?
Answer: A vaccine is a biological preparation that provides immunity against a specific disease.
18. Define biodiversity.
Answer: Biodiversity is the variety of living organisms present on Earth.
19. What is PCR?
Answer: PCR (Polymerase Chain Reaction) is a technique used to amplify DNA.
20. What is gene therapy?
Answer: Gene therapy is the treatment of diseases by replacing or modifying defective genes.
Mathematics
21. What is differentiation?
Answer: Differentiation is the process of finding the derivative of a function.
22. Define integration.
Answer: Integration is the inverse process of differentiation.
23. What is a matrix?
Answer: A matrix is a rectangular arrangement of numbers in rows and columns.
24. What is the determinant of a matrix?
Answer: A determinant is a numerical value associated with a square matrix.
25. What is continuity of a function?
Answer: A function is continuous if there is no break or gap in its graph.
Economics
26. What is inflation?
Answer: Inflation is the continuous rise in the general price level of goods and services.
27. Define national income.
Answer: National income is the total income earned by a country's residents in one year.
28. What is fiscal policy?
Answer: Fiscal policy refers to government decisions regarding taxation and public expenditure.
29. What is unemployment?
Answer: Unemployment is the condition in which people willing and able to work cannot find jobs.
30. What is a budget?
Answer: A budget is a statement of estimated income and expenditure for a specific period.
Business Studies
31. What is management?
Answer: Management is the process of planning, organizing, staffing, directing, and controlling resources.
32. What is leadership?
Answer: Leadership is the ability to influence and motivate people toward achieving goals.
33. Define motivation.
Answer: Motivation is the process of encouraging people to perform better.
34. What is delegation?
Answer: Delegation is the assignment of authority and responsibility to subordinates.
35. What is coordination?
Answer: Coordination is the process of integrating the activities of different departments.
Accountancy
36. What is capital?
Answer: Capital is the amount invested by the owner in a business.
37. What is goodwill?
Answer: Goodwill is the value of a firm's reputation and customer relationships.
38. Define assets.
Answer: Assets are resources owned by a business that have economic value.
39. What are liabilities?
Answer: Liabilities are the financial obligations of a business.
40. What is a balance sheet?
Answer: A balance sheet is a statement showing the financial position of a business on a specific date.
Political Science
41. What is the Constitution?
Answer: The Constitution is the supreme law of a country that defines the powers and functions of the government.
42. What are fundamental rights?
Answer: Fundamental rights are basic rights guaranteed to every citizen by the Constitution.
43. What is federalism?
Answer: Federalism is a system in which powers are divided between the central and state governments.
44. What is secularism?
Answer: Secularism means the state treats all religions equally and does not favor any religion.
45. What is universal adult franchise?
Answer: It gives every citizen above the prescribed voting age the right to vote without discrimination.
History
46. What was the Civil Disobedience Movement?
Answer: It was a movement led by Mahatma Gandhi in 1930 to oppose British laws through peaceful non-cooperation.
47. What was the main objective of the Non-Cooperation Movement?
Answer: Its objective was to achieve self-rule by boycotting British institutions and goods.
48. What was the significance of the Dandi March?
Answer: It marked the beginning of the Civil Disobedience Movement and protested the British salt tax.
49. Who was Mahatma Gandhi?
Answer: Mahatma Gandhi was the leader of India's freedom struggle who promoted truth and non-violence.
50. What was the impact of the Revolt of 1857?