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Q. What are the uses of Oxygen? Oxygen is essential for life. Most life processes are based on oxidative metabolism: While the terrestrial beings take up oxygen through respira
Fractional crystallisation- Purification of organic compound The method of separation of diverse components of a mixture by repeated crystallisations is termed as fractional cr
diagonal relationship between boron and silicon
classification of mixture according to particle size, uniform mixture, composed of solute and solvent
what are the demerits of Bohr''s atomic model?
Give example of Allotropy The element carbon has two common allotropes: diamond, where the carbon atoms are bonded together in a tetrahedral lattice arrangement, and graphite
primary and secondary cells
Which of the following reduces the activation energy of a chemical reaction?
character table symmetry element ammonia
CARBON, SILICON AND GERMANIUM With the valence electron configuration s 2 p 2 the nonmetallic group of elements 14 may form compounds with four tetrahedrally directed covalent
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