For the following questions answer them individually
Which energy of fossil fuel is transformed into electrical energy at thermal power plants?
Two trains of equal lengths take 10 seconds and 15 seconds respectively to cross a telegraph post. If the length of each train is 120 m, in what time will they cross each other traveling in the opposite direction?
Which of the following substances will NOT give carbon dioxide on treatment with dilute acid?
If '$$O$$' is the circumcentre of a triangle $$ABC$$ and $$OD$$ is perpendicular to $$BC$$, then find $$\angle BOD$$.
