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Why magnesium does not impart any colour to Bunsen flame while calcium does
What is periodic property
Q. Why we need Sulfuring? Sulfuring is the process which is used to destroy microorganisms and to preserve colour. Fruits after blanching may be dipped into a sulphite solution
Q. Show the Multiple covalent bonds between electron pairs? Ans. Two atoms may share one electron pair, two electron pairs or three electron pairs. The bonds formed in th
which of the following is not a characteristic of plunck''s quantum theory of radiation? A) Radiation are associated with energy B) A body can emit less or more than a quantum of e
Ether formation - Hydrocarbon Phenol reacts along with alkyl halides in alkali solution to make phenyl ethers (Williamson's synthesis). The phenoxide atom is a nucleophile and
What is the packet of energy called: (1) Electron (2) Photon (3) Positron (4)Proton Ans: Photon
According to Heisenberg's uncertainty principle, the product of uncertainties in position and velocities for an electron of mass 9.1x 10 -31 kg is: (1) 2.8x 10 -3 m 2 -s -1
Compounds with similar molecular formula but different properties are known as Isomers and the phenomenon is known as Isomerism.
Role of organic solvents in atomisation: The organic solvents of low molar mass like alcohols, ethers, and ketones enhance the absorption peaks by increasing rate of aspiratio
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