Life is an Exam !
A very simple quiz on coal and petroleum .Coal can be defined as a sedimentary rock that burns. It was formed by the decomposition of plant matter, and it is a complex substance that can be found in many forms. Coal is divided into four classes: anthracite, bituminous, sub-bituminous, and lignite.In contrast ,the term petroleum comes from the [...]
Second part of the 10 questions quiz on metals and non-metals for class VIII of CBSE Board. Physical properties of metals are different from non metals and to classify elements as metals and non metals , one has to study the chemical and physical properties of elements .They are broadly classified on the basis of Lustre , Hardness , [...]
Synthetic fibers is a natural fibre obtained from the cotton plant .Synthetic fibers are made through a number of processes using petrochemicals. A polymer is made up of many repeating units called monomers.Synthetic fibers also known as artificial fiber is a threadlike material do not exist naturally. For example, nylon, rayon, are synthetic fibers.If you compare , synthetic fibers to the natural cotton , it can be [...]
Synthetic fibers and plastics are alternatives to cotton which is a natural fibre obtained from the cotton plant.Synthetic fibres are manufactured by a number of processes using petrochemicals. A polymer is made up of many repeating units called monomers.In contrast , the natural cotton , is a form of polymer called cellulose, which is made of a large number of glucose units.Characteristics of synthetic fibers: Test Your Knowledge on Synthetic fibres and Plastics [viral-lock message="After you LIKE [...]
Microorganisms live in biosphere everywhere. You will find microbes where there is liquid water, including soil, hot springs, on the ocean floor, high in the atmosphere and deep inside rocks within the Earth’s crust. They play a critical role for recycling in ecosystems as they act as decomposers. Microbes are also used both in traditional food and beverage preparation. It is also used in modern technologies based on genetic engineering. 10 questions [...]
Microorganisms live in biosphere everywhere. You will find microbes where there is liquid water, including soil, hot springs, on the ocean floor, high in the atmosphere and deep inside rocks within the Earth’s crust. They play a critical role for recycling in ecosystems as they act as decomposers. Microbes are also used both in traditional food and beverage preparation. It is also used in modern technologies based on genetic engineering. Here is [...]
The subject of friction is an important one as many an invention is based on the fundmental principle of friction . The science of Friction is part of physics. Friction opposes the relative motion between two surfaces in contact. The force of friction is greater if a rough surface is involved, as the number of [...]
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