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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.
Making a model hydraulic elevator Some freight and passenger elevators are increased by water pressure. You can make a model of one of these with an automobile hand pump. Conne
Solid propellants these types of propellants are mixtures of solid fuel and a solid oxidizer. These are further categorized into two sub-classes, (1) Composite propellants
What are Acceptance Tests? Acceptance tests are used to evaluate product acceptability or liking or to determine which of a series of products is the most acceptable or the mo
What is the packet of energy called: (1) Electron (2) Photon (3) Positron (4)Proton Ans: Photon
what is electronic displacements?
what is an atom
Which type of compounds show high melting and boiling points: (1) Electrovalent compounds (2) Covalent compounds (3) Coordinate compounds (4) All the three types of co
In neutral atom, which particles are equivalent: (1) P + e + (2 ) e - e + (3) e -, P + (
why lanthanide series is called lanthanide?
Onion and Garlic Onions (A. cepa), and garlic (A. sativam), have been used in traditional and folk medicine for over 4000 years. Disorders for which both garlic and onions ha
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