Use your brain power
Recently, it has been made compulsory in India and some other countries to mix `10%` ethanol with fuels like petrol and diesel. What is the reason for this ?

Use your brain power! what would have happened if plants like tamarind, banyan and mango had fibrous roots?

Use your brain power ! Some machines we use in our day to-day life are shown in the picture. What is the type of lever in each of these ? Pliers

Use your brain power ! Some machines we use in our day to-day life are shown in the picture. What is the type of lever in each of these ? see-saw

Use your brain power ! Some machines we use in our day to-day life are shown in the picture. What is the type of lever in each of these ? Scissors

Use your brain power ! Some machines we use in our day to-day life are shown in the picture. What is the type of lever in each of these ? Wheelbarrow

Use your brain power: If a car, starting from point P, goes to point Q and then returns to point P (see Figure), how much distance has it travelled and what is its displacement?

Since your earlier school days, you have been solving maysteries/puzzles labelled as use your brain power. Did you ever wonder why human brain has such a capacity? Why and how we evolved along these lines? What is the extent of similarity between humans, chimpanzees and monkeys?

Use your brain power What would happens if the energy remains trapped in the body of apex consumers even after their death? What will happen if there were no decomposers like microbes and fungi in nature?

Use your brain power ! Some machines we use in our day to-day life are shown in the picture. What is the type of lever in each of these ? A bar to remove a nail