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Q. What is chlorophyll?
A magnesium complex of porphyrin is called chlotophyll. the green colouring material in plants and which is essential for photosynthesis.
Hemoglobin, plays the role of oxygen carrier in mammalian blood. In hemoglobin Fe2+ ion is not only surrounded by four nitrogens of porphyrin but the fifth position is occupied by nitrogen of the protein as shown in Fig.
Why are they (Lanthanides and Actinides) called Inner Transition Elements?
Structure of liquids: Liquids have a limited degree of short-range order and are most adequately described in terms of a radial distribution function. The probability of findin
The uncertainty in the position of a moving bullet of mass 10 gm is 10 -5 m . Calculate the uncertainty in its velocity: (1) 5.2 x 10 -28 / sec (
Classification of polymers - Fibres These are the polymers that comprise strong intermolecular forces among the chain. These forces are either hydrogen bonds or dipole-dipole i
What is the pollution?
Enthalpy, H, is defined by the relationship H=U+pV. The enthalpy change, ΔH, for finite changes at constant pressure is given by the expression ΔH = ΔU+pΔV, so making the enthalpy
why dietry iodine is important in thyroid functioning
why didnt all the noble metals get rust even they have high electrode potentials? Ans) for e.g if you look at gold it is highly reactive with greater negativity of gibbs free ener
structure and uses
Q. What do you mean by Permissible level ? To regulate and enforce safety about the use of these synthetic colours and dyes PFA, 1954 has covered their use in part IV comprisin
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