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Principle of chromatography - Purification of organic compounds The method of chromatography is based on the difference in the rates at which the components of a mixture move t
Antiknock Compounds - Characteristics of Hydrocarbons To decrease the knocking property or to enhance the octane number of a fuel certain chemicals are included in it. These ar
Which of the following has more unpaired d-electrons: (1) Zn + (2) Fe 2+ (3) N 3+ (4) Cu + An
1st A group because the oxides and hydrides are alkaline in nature.
Determine the architectural units of silicates This common architectural unit (SiO 4 4- ) of silicates is of remarkable stability. The different silicates may be classified
Write and balance the equation for the burning of an unknown hydrocarbon, C4H9 in air.
Synthesis of proteins : The DNA consists of the genetic code and directs protein synthesis by RNA. The two helix of DNA partly uncoils and approximately the individual strands
The ionisation potential of a hydrogen atom is -13.6 eV. What will be the energy of the atom corresponding to n= 2 . (1) -3.4 eV (2)-6.8 eV (3) -1.7 eV
Talcum powder: Talcum powder is utilized to decrease impatience of the skin. Talcum powders such as face powders comprise talc (Mg 3 (OH) 2 Si 4 O 10 ) Chalk, zinc stearate an
how to memorize cation and anion
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