Chemistry Question Bank

An organic compound having carbon, hydrogen and sulphur contains 4% of sulphur. The minimum molecular weight of the compound is

In a Dumas nitrogen estimation 0.3 g of an organic compound gave 50 cm3 of nitrogen collected at 300 K and 715 mm pressure. The percentage of nitrogen in the compound (vapour pressure of water at 300K is 15 mm) is

A mixture of benzene and chloroform is separated by–

How will you purify a liquid having non-volatile impurities?

Which of the following compound is/are purified by sublimation?

How will you separate iodine from sodium chloride?

An organic liquid decomposes below its boiling point. How will you purify it?

The best method for the sepration of naphthalene and benzoic acid from their mixture is

The separation of the constituents of a mixture by column chromatography depends upon their

A mixture of acetone and CCl4 can be separated by

Azeotropic distillation is used only to seperate azeotropes ie. constant boiling mixture. Here acetone & CCl4 are not azeotropic mixture. Hence (a) is not correct.

CCl4 & acetone differ in their boiling Point. So it can be seperated through fractional distillation. Hence (b) is correct.

Anthracene can be purified by

Which of the following organic compounds will give white precipitate with AgNO3?

Which of the following test is not used for protein/amino acids–

Which of the following is the test of primary amine?

Which of the following is the test of carbohydrates?

Zeisel’s method is use for the determination of

Schiff test is used for the identification:

Which of the following will give Tollen’s test?

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

Which of the following is the test of alcohol?

Silver salt method is used to determine molecular weight of

KOH can be used as a drying agent for

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