A shop sells a book for 240 rupees after giving a 20 % discount on the marked price. What is the marked price of the book?
If x + 1/x = 5, what is the value of x² + 1/x²?
Which one of the following graphs accurately represents the plot of partial pressure of CS₂ vs its mole fraction in a mixture of acetone and CS₂ at constant temperature?
