TAMIL NADU STATE BOARD CLASS 12 ENGLISH 2024

Indian Premier League, 2023. Teams qualified for Play-offs RANK TEAM M W L N/R P NRR 1 Gujarat Titans 14 10 4 0 20 +0.809 2 Chennai Super Kings 14 8 5 1 17 +0.652 3 Lucknow Super Giants 14 8 5 1 17 +0.284 4 Mumbai Indians 14 8 6 0 16 −0.044 M - Matches N/R - No Result (game abandoned) W - Won P - Points L - Lost NRR - Net Run Rate

We need to use our energy sources wisely and economically and conserve as much of our energy resources as we can. How can we do this ? Firstly, we must reduce our dependence on non-renewable resources. F

We need to use our energy sources wisely and economically and conserve as much of our energy resources as we can. How can we do this ? Firstly, we must reduce our dependence on non-renewable resources. For example, can we design or invent vehicles that do not use petrol or diesel as fuel ? If we can, then we can reduce our consumption of petroleum. Many scientists and engineers are working on this idea. Can we use water and wind power, rather than diesel or petrol or coal power to generate electricity ? Secondly, we must look for and use alternative fuels and sources. Rather than using coal, kerosene or cooking gas, can we use animal wastes or plant wastes ? We have learnt to extract energy from animal wastes such as cow dung and plant wastes. One successful method is to ferment animal waste in closed containers and produce a gas called biogas, which is just as good as cooking gas. The waste from the biogas plant can be used as manure in fields and plantations. A second example is the use of windmills, where wind is used to turn a paddle wheel to produce electricity or to lift water. Thirdly, we must make greater and cleverer use of the sun. The sun is a perennial source of light and heat for the earth, and it is absolutely free! If we could devise methods for capturing the heat and light from the sun and transforming it into electricity, mankind could benefit greatly.

Dr. Carver was an American Black slave, who by dint of his ability became a scientist and educator of world-wide fame. A national monument has now been erected to honour him. This monument has been built at his birth-place in the United States of America. Carver’s life and achievements prove the American saying : “You can’t keep a great man down.” From childhood he showed qualities which gave promise of his genius. He would get up before sunrise to study the wonders of nature before the break of dawn. His guardians wanted to educate him but were too poor to do so. So, he left home when he was hardly ten years old, and began to work at small jobs. Thus he earned a little money for his school expenses. He continued to do so even when he was at college. Thus he passed his M.Sc. examination and became a professor. There he wrote several books on scientific subjects. His chief desire was to do the greatest good to the greatest number of people. He left all his life’s savings to found scholarships for research in Agricultural Chemistry. He knew that this research was bound to benefit farmers all over the world.

Dr. Carver was an American Black slave, who by dint of his ability became a scientist and educator of world-wide fame. A national monument has now been erected to honour him. This monument has been built at his birth-place in the United States of America. Carver’s life and achievements prove the American saying : “You can’t keep a great man down.” From childhood he showed qualities which gave promise of his genius. He would get up before sunrise to study the wonders of nature before the break of dawn. His guardians wanted to educate him but were too poor to do so. So, he left home when he was hardly ten years old, and began to work at small jobs. Thus he earned a little money for his school expenses. He continued to do so even when he was at college. Thus he passed his M.Sc. examination and became a professor. There he wrote several books on scientific subjects. His chief desire was to do the greatest good to the greatest number of people. He left all his life’s savings to found scholarships for research in Agricultural Chemistry. He knew that this research was bound to benefit farmers all over the world. Though world - famous, he never felt proud of his discoveries. “I discovered nothing,” he once said, “I am God’s agent - the instrument through which He works.”