List of top Questions asked in Maharashtra Class XII

Find the incorrect pairs in group 'B' from every set and write the correct ones: % Group A and B table \begin{tabular}{|l|l|} \hline Group 'A' & Group 'B'
\hline (i) Christopher Columbus & Discovery of America
(ii) Vasco-da-Gama & Discovery of China
(iii) Mungo Park & Discovery of Africa
(iv) Abel Janszoon Tasman & Discovery of New Zealand
\hline \end{tabular}
Find the incorrect pairs in group 'B' from every set and write the correct ones: % Group A and B table \begin{tabular}{|l|l|} \hline Group 'A' & Group 'B'
\hline (i) Arcebispo & Chief Executive Officer
(ii) Chancellor & Judge
(iii) Vedor da Fazenda & In-charge of Company's Possessions
(iv) Capitaon & Captain
\hline \end{tabular}
Find the incorrect pairs in group 'B' from every set and write the correct ones: % Group A and B table \begin{tabular}{|l|l|} \hline Group 'A' & Group 'B'
\hline (i) Surya Sen & Bengal
(ii) Vinayak Damodar Savarkar & Gujarat
(iii) Ramsingh Kuka & Punjab
(iv) Shyamji Krishna Verma & London
\hline \end{tabular}
Find the incorrect pairs in group 'B' from every set and write the correct ones: % Group A and B table \begin{tabular}{|l|l|} \hline Group 'A' & Group 'B'
\hline (i) Burma Independence & Aung San Army
(ii) Pan-African Congress & W.E.B. Du Bois
(iii) Internal autonomy to colonies & Winston Churchill
(iv) Indian Independence Movement & Mahatma Gandhi
\hline \end{tabular}
Write the names of historical places/persons/events:
Queen of England who encouraged explorers to undertake sea expeditions
Movement started by Dr. Baba Adhav
American Naval base attacked by Japan
Treaty signed by Soviet Russia to counter America’s influential process in Europe
Choose the correct alternatives and rewrite the statements:
The first seafarer to circumnavigate the African continent was .........
The first conference of Asian and African countries was held in 1955 at ........... in Indonesia.
Maharshi Vitthal Ramji Shinde established the ..............
The Dutch established their first colony at ...............
What is a nanomaterial? Write the reaction involved in the sol-gel process during hydrolysis.
What are the limitations of the root pressure theory?
Explain unique features of acquired immunity.
Identify ‘A’, ‘B’ and ‘C’ in the following chain reaction and rewrite the chemical reactions: \[ CH_3CH_2OH \xrightarrow{\text{red P}, \, Br_2} A \xrightarrow{\text{KCN, alc.}} B \xrightarrow{\text{LiAlH}_4, \text{Ether}} C \]
Harvesting:
Define Lanthanide contraction. Write the balanced chemical equation when acidified \( K_2Cr_2O_7 \) reacts with \( H_2S \).

Appeal: 
Prepare an ‘Appeal’ on the topic ‘Traffic Rules for Safety Measures’ with the help of the following points (100 to 150 words): 
- Ignorance and lack of knowledge and information 
- Purpose / need of obedience 
- Avoid accidents / need of society 
- Discipline 
 

Humanistic psychology school of thought is proposed by __________.
 

Explain any two methods of promoting empathy.
What are chromosomal disorders? Describe Turner’s syndrome and Klinefelter’s syndrome.
Derive an expression for maximum work obtainable during isothermal reversible expansion of an ideal gas from initial volume \( V_1 \) to final volume \( V_2 \).

If the unit of the rate constant is \( \text{mol} \, (\text{dm}^{-3} \text{s}^{-1}) \), the order of the reaction would be ____________.

Arrange the following steps of DNA fingerprinting in correct sequence: 
(a) Gel electrophoresis (b) Isolation of DNA (c) Southern blotting (d) Restriction digestion

Prove by vector method, the angle subtended on a semicircle is a right angle.
Silver Nitrite
What are interhalogen compounds? Write the chemical reaction when chlorine reacts with dry slaked lime.