The process of separating the various constituent/ fraction of petroleum is known as Fractional Distillation. Petroleum is a dark oily liquid.... View Article
(b) sulphur Copper, aluminium and iron are metals, but sulphur is not a metal. Sulphur is characterized as a non-metal because it is consistent... View Article
True Terylene is a synthetic polyester fabric which in mixing with wool is known as terywool. Terylene is mainly used in making plastic bottles... View Article
Wood pulp is a source of rayon. Rayon is manufactured from wood pulp that in turn is a cellulose based raw material that occurs naturally. This... View Article
By maintaining personal hygiene and good sanitation practices. Cholera is an infectious disease that causes severe watery diarrhea , which can... View Article
(a) Schleiden and Schwann Cell theory was expanded by Virchow in 1855 by suggesting that all cells arise from pre-existing cells All animals and... View Article
When heated in air, coal burns and produces mainly carbon dioxide gas. Coal is processed in industry to get some useful products such as coke,... View Article
(c) Nylon Fibres that usually made using natural materials along with some man-made materials are known as synthetic fibre.Synthetic fibres are... View Article
Dead remains of plants got buried under the earth millions of years ago. Due to intense heat and pressure inside the earth, they got converted... View Article
(b) Nitrogen fixing bacteria are found in anaerobic conditions, i.e., absence of oxygen. The symbiotic nitrogen-fixing bacteria invade the root... View Article
d) Urchin Sea urchins are spiny sea creatures that are round and prickly like hedgehogs. They belong to Echinoderm phylum. Phylum Annelida... View Article
Cells are called the structural and functional unit of life because all the living organisms are made up of cells and perform all life process... View Article
Petrol is a fossil fuel which is present in limited quantity in nature and can be exhausted by human activities, but sunlight is present in... View Article
Water is a good conductor of electricity. If used in fires involving electrical equipment, it will cause electric shocks or short circuit.... View Article
The use of CNG in automobiles has reduced pollution in our cities as it is a cleaner fuel as compared to other petroleum containing fuels. The... View Article
Solution: a) Thallophyte b) Vascular tissue without specialization c) Pteridophyte d) Phanerogams e) Bare naked seeds f)Angiosperm Seeds with... View Article
