Tea gets cooled, when sugar is added to it. Why ?

A wire gets heated when it is bent back and forth. Why?

A sugar solution of 3 litres contains 40% sugar. One litre of water is added to this solution. What is the percentage of sugar in the new solution ?

Why vapour pressure of a liquid decreases when a non - volatile solute is added to it ?

When sugar is treated with conc. sulphuric acid, the sugar is charred. In this process, sugar is

(a) When a moist blue litmus paper is dipped in a solution of hypochlorous acid, it first turns red and then latter gets decolourised. Explain. (b) Iodine is liberated when KI is added to a solution of Cu^(2+) ions but Cl_(2) is not liberated when KCl is added to a solution of Cu^(2+) ions. why?

600 g of sugar solution has 40% sugar in it. How much sugar should be added to make it 50% in the solution?

600 g of sugar solution has 40% sugar in it. How much sugar should be added to make it 50% in the solution?

2 g of sugar is added to one litre of water to give sugar solution. What is the effect of addition of sugar on the boiling point and freezing point of water ?

Which sugar is called invert sugar? Why is it called so?