What can you as an individual do to reduce your consumption of the various natural resources?
Natural resources are the resources which exists in the nature without the interference of human beings. These are the important resources which are used to support the life and to meet the requirements of the people. Like oil, water, soil, air, metals, stones etc. all those substances which are taken from the nature are refer to as natural resources. As an individual, we can reduce our consumption of natural resources to meet the requirements of present generation as well as the future generation and these are following:-
1. Deforestation should be stop. There can be many cause of the deforestation like forest fires, pests and the diseases, weather (storm and snow damages the forest) etc.
2. Recycling of agricultural waste (agricultural waste including paddy husks, corn cobs, fibrous coats of coconuts, tobacco waste and used papers can be converted into the usable papers), waste paper (old books, newspapers, magazines, notebooks are converted into the new or usable papers by the paper mills. Recycling of papers are very costly but it can save trees from being cut), jute (jute waste is converted into the hardboards), cattle dung (used in gobar gas plants provides in cooking gas), composting (domestic wastes and sludge can be decomposed in our own house by composting to provide humus to the replenish depleted soil resources), metals, glass and plastics etc. should be done.
3. Wastewater management:- many waste water treatment methods has been given to clean the water that can be reused.
4. We should also apply the rainwater harvesting system.
5. We should avoid the running of automobiles to cover the short distances, we should use bicycle.
6. Some alternative fuels like bio- diesel, refuse- derived fuel, batteries, non- fossil methane, vegetable oil, biogas and some biomass sources are used instead of coal or petroleum which is used in reducing the pollution.
7. Some alternative sources of energy are used like solar power, nuclear power, hydro- power, wave energy, natural gas, geothermal power plants are used instead of inverter or generators.
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Outline a project which aims to find the dominant coat colour in dogs.
Draw the structure for the following compounds.
(i) Ethanoic acid (ii) Bromopentane*
(iii) Butanone (iv) Hexanal.
*Are structural isomers possible for bromopentane?
A hot plate of an electric oven connected to a 220 V line has two resistance coils A and B, each of 24 Ω resistance, which may be used separately, in series, or in parallel. What are the currents in the three cases?
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(a) What property do all elements in the same column of the Periodic Table as boron have in common?
(b) What property do all elements in the same column of the Periodic Table as fluorine have in common?
Calculate the number of electrons constituting one coulomb of charge.
What is an homologous series? Explain with an example.
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Which gas is usually liberated when an acid reacts with a metal? Illustrate with an example. How will you test for the presence of this gas?
How would you distinguish experimentally between an alcohol and a carboxylic acid?
What are the disadvantages of fossil fuels?
A convex lens forms a real and inverted image of a needle at a distance of 50 cm from it. Where is the needle placed in front of the convex lens if the image is equal to the size of the object? Also, find the power of the lens.
A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant? Why or why not?
Calculate the number of electrons constituting one coulomb of charge.