What is meant by 'Naina banjaare '?

Greg goes to a high school and observes the way students talk to each other. he makes notes on the words used, the atmosphere of the school and the way the students present themselves to each other. this is an example of a( research method.

What city was divided between communism and democracy/capitalism after world war 2

Marcy tests a solution with a strip of blue litmus paper. the paper turns red. the solution is acidic basic neutral