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a. 'Hormones are chemical messengers.' Explain? b. Name the main disease caused due to lack of the vitamin and its source in each of the following: A, B 6 and E.
why are higher members of amines less odourous
Calculation of empirical formula The steps included in the calculation are as follows, (a) Divide the percentage (%) of each element by its atomic volume. This gives th
Using the valence bond approach, reduce the shape and magnetic character of What are elastomers? Write the chemical equation to show the preparation ration of Buna-S.
The type of orbitals present in Fe is : (1) s (2) s and p (3) s, p and d ()s, p, d, and f Ans: s, p and d
what is the effectof mesomerism on aromatic compounds.
how periodic table is helpful in chemistry give two example
1 gm of a metallic oxide on reduction gives 0.68 gm of the metal. ans) Mass of metal/mass of oxygen=eq. mass of metal/eq. mass of oxygen. applying this we get .68/.32=x/8 x=1
Explain the Gibbs Phase Rule for Multicomponent Systems? The Gibbs phase rule for a pure substance was written F = 3 - P. We now consider a system of more than one substance an
Microbiological changes Microbes have the ability to multiply at high rates when favourable conditions are present. Prior to harvest, fruits and vegetables have generally goo
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