List of top Questions asked in CBSE CLASS XII

b You are Mr. Anmol Gupta. You are planning to celebrate your sister's silver jubilee wedding anniversary. Draft the invitation card to be sent to relatives and friends, sharing all relevant details.
You are Shalini/Sarabjit, a qualified and experienced chartered accountant. You saw the given advertisement in a newspaper and wish to apply for the position advertised. Write a letter to Parkinson Associates along with your bio-data, expressing your interest in the advertised post.
The compound which undergoes SN1 reaction most rapidly is:
Two among the three components of DNA are $\beta$-D-2-deoxyribose and a heterocyclic base. The third component is:
Which one of the following first row transition elements is expected to have the highest third ionization enthalpy?
Estimate the value of Net National Product at Factor Cost (NNP\(_{FC}\)), using the following information: 
value of Net National Product at Factor Cos
“Trade and Investment Policy of India had undergone comprehensive changes in the post reforms period of 1991.” Do you agree with the given statement? Justify your answer with any two valid arguments.
If \( x \cos(p + y) + \cos p \sin(p + y) = 0 \), prove that \( \cos p \frac{dy}{dx} = -\cos^2(p + y) \), where \( p \) is a constant.
“Historians have studied many rules and varied practices of familial ties during the Mahabharata period.” Explain the statement with examples.
Franz in “The Last Lesson” realizes the importance of going to school while Saheb in “Lost Spring” yearns to go to school. Write a paragraph exploring the different perspectives of these two young boys on learning and education.
Two identical small conducting balls \( B_1 \) and \( B_2 \) are given \(-7\) \(\mu C\) and \(+4\) \(\mu C\) charges respectively. They are brought in contact with a third identical ball \( B_3 \) and then separated. If the final charge on each ball is \(-2\) \(\mu C\), the initial charge on \( B_3 \) was:
You are Mr. Srikanth Sharma. You have recently built a new house in the hills of Uttarakhand. Draft a letter inviting your brother and his family to spend a few days with you in your new home. Include relevant details.
An amide ‘A’ with molecular formula C$_7$H$_7$ON undergoes Hoffmann Bromamide degradation reaction to give amine ‘B’. ‘B’ on treatment with nitrous acid at 273-278 K forms ‘C’ and on treatment with chloroform and ethanolic potassium hydroxide forms ‘D’. ‘C’ on treatment with ethanol gives ‘E’. Identify ‘A’, ‘B’, ‘C’, ‘D’ and ‘E’ and write the sequence of chemical equations.
You are a renowned doctor and have been invited by your school alumni as Chief Guest to the Annual Graduation Ceremony of Green School on Sunday, March 24th, 2024. Write a letter to the President of the Alumni Association expressing your inability to attend due to a prior commitment. Also convey your congratulations to the graduating students.
 
Chaman, Burman, and Aman were partners in a firm sharing profits and losses in the ratio of 3:2:1. Aman was guaranteed a minimum amount of ₹60,000 as his share of profit every year. The net profit for the year ended 31\textsuperscript{st March, 2023 amounted to ₹1,20,000. Pass necessary journal entries in the books of the firm showing the distribution of profit amongst the partners.}

(a) You are Anuj, a student of Class XII. Whenever you feel stressed, you listen to music and experience relaxation. You strongly believe that music has the power to destress and refresh the body and mind.

Based on your experience, write an article on "Music as Therapy" for a health magazine, highlighting the healing power of music. Use the following points along with your own insights to develop your article:

Key Points:

  • Music establishes a connection with the self.
  • Music helps in self-expression.
  • Comforts the body, mind, and soul.
  • Improves one’s mood and emotional well-being.

 

(a) “United Nations Department of Economic and Social Affairs indicated that India has overtaken China as the world’s most populous country in the month of April 2023.”
Explain the consequences of the one-child policy adopted by China in the 1970s.

If amines are arranged in increasing order of their basic strength in gaseous phase, the correct order will be:

The most stable complex among the following is:

Williamson's synthesis of preparing dimethyl ether is a/an:

Write the reaction involved in:
(a) Reimer-Tiemann reaction
(b) Kolbe's reaction

Give plausible explanation for: 
(a) Diazonium salts of aromatic amines are stable.
(b) Aniline does not undergo Friedel-Crafts reaction. 
(c) Aniline on nitration gives substantial meta product.

The correct IUPAC name of (CH₃)₃C-CH₂Br is:

The IUPAC name of the complex [Co(NH₃)₅(ONO)]Cl₂ is:

Which of the following does not undergo Aldol condensation?