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Aromaticity or aromatic character
The characteristic behaviour of aromatic compounds is termed as aromaticity. Aromaticity is due to the extensive delocalisation of p-electrons in planar ring system. Huckel (year1931) described aromaticity on the basis of following rule.
A solid substance with a mass of 200g is at its melting temperature in a calorimeter. While the substance changes from a solid to a liquid at the same temperature, the 400-gram mas
process of metallurgy
Q. Classification of emulsifiers? Emulsifiers can be classified under two categories. These are: • Natural: These are naturally present in foods. Some examples are phosphol
In Bohr's model, atomic radius of the first orbit is γ the radius of the 3rd orbit, is: (1) γ/ 3 (2)γ (3) 3γ (4) 9γ Ans: 9γ
Tests for acetone - Indigo test and Iodoform test (a) Indigo test: When a small amount of orthonitrobenzaldehyde is added to approximately 2 ml. of acetone and it is diluted al
DNA nucleotides Adenine + Deoxy ribose sugar + Phosphate → Adenosine phosphate Guanine
,Potassium-42 is a radioisotope that nutritionists use to determine whether the body is effectively using potassium at the cellular level. The half-life of potassium-42 is 12.4 hou
what is the trend for ionization energy and metals in the periodic table
can i use eriochrome black t instead of murexide in complexometric titration of copper with EDTA
The maximum number of unpaired electron can be present in d orbitals are: (1) 1 (2) 3 (3) 5 (4) 7 Ans: 5
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