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Q. What do you mean by electro-magnetic radiation?
In the untimely twentieth century scientists accepted the idea that an atom consisted of a massive positively charged nucleus surrounded by negatively charged electrons. Additional explanation of the atom's electron arrangement came from research involving light and its interaction with matter.
Wave nature of light observable light is part of a range of electro-magnetic radiation a form of wave energy that travels through empty space and is propagated in the form of alternating electric and magnetic fields. Gamma rays, X rays and radio waves are other examples of electromagnetic radiation.
Q. Illustrate Uses of f-block element? Lanthanides and many of their complexes have received wide industrial applications. For example, europium derivatives are used as phospho
Raising heavy weights by water pressure Get a rubber hot-water bottle. Put a one- hole stopper carrying a short glass tube tightly in the neck. Punch a hole in the bottom of a
Question: (i) Explain the concept of Environmental Impact Assessment (EIA) and state its main objectives. (ii) List 3 activities (from the marine sector) which require an
What are the theoretical physical properties of esters?
mixture of sulphur carbon and kmno4 is named what
Classification based upon molecular forces: Depending on the intermolecular forces, the polymers have been categorized into four types. (a) Elastomers (b) Fi
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Name the principal ore of tin or lead. Describe the different steps (along with equationsfor the reactions) involved in the extraction of the metal from the ore named. Name
An electron having the quantum numbers n=1, l=3, m=0 s= -1/2 , would be in the orbital: (1) 3s (2) 3p (3) 4d
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