Chemistry Question Bank

Sulphur is estimated by Carius method in the form of

Which of the following statements is wrong?

Dumas method involves the determination of nitrogen content in the organic compound in form of–

Kjeldahl’s method is used in the estimation of–

In Lassaigne’s test when both N and S are present, blood red colour obtained is due to the formation of–

The oxygen is estimated in the organic compound by

Which of following will give Lassaigne’s test for nitrogen

Which of the following compounds will answer Lassaigne’s test for nitrogen

Among the following which compound gives precipitate with AgNO3 solution? (a) (b) (c)

Phenol and benzoic acid can be separated by

Which of the following test can use for separation of alcohol and phenol?

Seliwanoff’s test is used for the distinguish:

Barfoed test is used for the distinguish:

An organic compound is heated with HNO2 at 0oC and then the resulting solution is added to a solution -napthol whereby a brilliant red dye is produced. The observations indicate that the compound possesses.

Which of the following observations is correct and is used in the identification of carboxylic acids?

Esters undergo hydrolysis in Presence of KOH

Acids reacts with KOH to form salt.

Phenols contains acidic H it reacts with KOH.

Amines are basic. Therefore, do not react with KOH.

KOH can be used as a drying agent for

Silver salt method is used to determine molecular weight of

Which of the following is the test of alcohol?

Which of the following compound Discharge bromine solution to colourless without evolving HBr?

Which of the following will give Tollen’s test?

Schiff test is used for the identification: