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Kerala (English Medium) / Chemistry Questions

Total Questions 667
how many elements have charge?
In thermochemical reaction which releases heat,exo-thermic or endo-thermic?
Explane Rutherford's Nuclear Model of Atom.
how many groups are in periodic table?
How is the process of extraction of iron from ore?
what is the oxidation numbers of Fe in Fe4[Fe(cn)6]?
5.6l of helium gas at STP is adiabatically compressed to 0.71.Taking the initial temperature to be T1,the work done in the process is
Which are the different states
What is iodine ?
What is mean by crystal field splitting energy? How can we calculate it?
what is hybridization and its properties
What is H2SO4 ?
I need to understand and study about hybridisation,features of hybridisation ,and need to learn all about types of hybridisation.please explain me about sp ,sp2 nd sp3 and all ?
What all are the experiments do in the discharge tube by different scientist !
Respected Sir, Galvanometer is used to detect the presence of electricity. So why is voltmeter used in electrochemical cell arrangement to detect the presence of current?
What are the advantage and disadvantage of plastics?
Respected teacher, Galvanometer is used to detect the direction of electric current.Then why is voltmeter used in electrochemical cell or Galvanic cell?
What is organic chemistry?
Explain first law of thermodynamics.
cell division means?