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list the physical properties of two examples of metallic and non metallic elements
explain why carbon tetra-chloride does not dissolve in water?
Q. Illustrate the structure of Alkanes? Ans. Alkanes have the general formula C n H 2n+2 . This means that for every n atoms of carbon, there are 2n + 2 atoms of hydrogen.
General Tests of Esters (a) Esters has sweet smell (b) Esters is neutral towards litmus (c) A pink colour is developed while one or two drops of phenolphthalein are adde
What are the objectives of heat treatment of metals? Objectives of heat treatment- Cause relief of internal stresses developed during cold working, welding, forging, cas
Classification of proteins - Fibrous proteins These are composed of polypeptide chains which run parallel to the axis and are held together by a strong hydrogen and disulphide
why water molecule forms covalent bond even though it dissociates into ions
Nitrenes - Organic Chemistry (1) The nitrogen analogous of carbenes are termed as nitrenes. (2) There is probability of two spin structure for nitrenes depending upon whethe
how does molar volume varies with: a) a decrease in temperature d) an increase in pressure
Give reasons for the following: a. Molten aluminium bromide is poor conductor of electricity. b. Nitric oxide becomes brown when released in air. c. PCl
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