Q. Define ENdothermic & Exothermic reactions.

Q. Write any four indicator which are use in titration.

Q. write the Structure of glucose, fructose & nitro benzene.

Q. define---
    1. polrimeter.
    2. spectrophotometer.

Q. define--
    1. nolmar solution.
    2. molal solution.
    3. molarity.
    4. reverse osmosis.

Q. define--
     1. fermation
     2. pH. 
     3. conductivity

1)Endothermic Reations :It is defined as the reaction which 
undergoes inertly in the chemical chain is known as 
endothermic reaction.Such as Nacl when inertly gets react 
the byproduct is Na++ and Cl--.
Exothermic Reaction: It is defined as the reaction which 
undergoes outside the chemical chain to perform the 
breakdown of chemical bonds in presence of a catalyst is 
known as exothermic reaction.For eg H20 when it gets 
reducted on heating O2 gets separated living H2 as the bye 
product.


2)The four indicators in titrations are Hydrogen 
electrode,Antimony-Antimonyoxide 
electrode,glasselectrode,membrane/ion selective electrode.

3) glucose structure-C6H6O5, Fructose-C6H6O7, 
Nitrobenzene-C6H6N2

4a) Polorimeter: It is a devce used to measure titrations 
inthe electrodes in the polarographic studies.
b) Spectrophometer: It is the device used to measure the 
interpretations of electromagnetic radiations from ground 
state  to excited state to  record the radiations of the 
photons, electons, visible radiations ,ultra violet 
radiations, microwave radiations,radiowave radiations,x-
rays,gamma rays or cosmic rays.
 5 a) Normal Solution : It is defined as the solution which 
has solute dissoved in the solvent in the molecular ratio 
of gram weight by gram molecular weight in 1000 grams water.
b)molal solutin : It is defined as the solute dissolved in 
1000gm molecular weight of solvent.
c) Molarity : It is defined as the ration between weight by 
gram moleclar weight in no. of gmwt of the molecule in 1000 
gms of water.
 d)reverse osmosis: It is defined as the ration of the 
pressure applied from the higher altitude to the ground 
surface performing water dialysis is known as reverse 
osmosis.
6 a) Fermentation : It is defined as the seeds or a 
molecule when been heated to show the presence of the 
participated ions or gases is known as fermentation.
b)pH : It is the sorhensens devised scale for measuring 
acidic and basic levels of the ions, atoms, molecules etc.
c) Conductivity: It states that the flow of current in a 
given source to attain its potential to show the unit 
charge of ions is known as the conductivity of ions on the 
electrodes.