Chemistry Question Bank

Find out the percentage of carbon in acetic acid.

0.395 g of an organic compound by Carius method for the estimiation of sulphur gave 0.582 g of BaSO4. The percentage of sulphur in the compound is–

If N and S both are present in an organic compound during Lassaigne’s test, both will change into

Sodium nitrorusside Na2[Fe(CN)5NO] is used as reagent for detection of ______ and the compound formed is ____.

Will you get any precipitate if you add silver nitrate solution to chloromethane? If not, why?

How is phosphorus estimated in an organic compound?

What type of organic compounds cannot be Kjeldahlised?

What conclusion would you draw if during Lassaigne‘s test, a blood red colouration is obtained?

Lassaigne’s test is not shown by diazonium salts. Why?

Which Metal cyanide give a positive Lassaigne’s test for nitrogen?

Compounds which do not contain halogen but give positive Beilstein test?

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.