In the titration of Na2CO3 and HCl, the indicator used is
methyl orange
methylene blue
phenolphthalein
litmus
A.
methyl orange
pH of the solution at the equivalence point is on the acidic side due to dissolution of CO2 formed. A slight excess of strong acid lowers the pH to 3.5 when methyl orange produces red colour.
Which type of isomerism is shown by propanal and propanone?
Functional group
Metamerism
Tautomerism
Chain isomerism
Copper sulphate is dissolved in water containing ________ for making Bordeaux mixture.
NaOH
KCN
Ca(OH)2
All of these