Chemistry Question Bank

Which of the following test is used for quantitative estimation of N

When 0.32g of a compound is heated with conc. HNO₃ and BaCl₂, 0.932g BaSO₄ is obtained. The percentage of sulphur in the compound is

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

Which of following will give Lassaigne’s test for nitrogen

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

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

Which of the following statements is wrong?

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

Phenol and benzoic acid can be separated by

Sulphur is estimated by Carius method in the form of

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–

Phenols contains acidic H it reacts with KOH.

In Duma's method of estimation of nitrogen 0.35 g of an organic compound gave 55 mL of nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be (Aque…

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

How will you separate iodine from sodium chloride?

An organic compound is heated with HNO₂ at 0 °C 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.

In Duma's method of estimation of nitrogen 0.35 g of an organic compound gave 55 mL of nitrogen collected at 300K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be (Aqueo…

A mixture of acetone and CCl₄ can be separated by

Presence of halogen in organic compounds can be detected by using (UP CPMT 2012)

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

The colour of the solution/precipitate obtained in the elemental analysis of an organic compound and the molecule/ion responsible for the colour are given below. Choose the incorrectly matched pair: (Kerala PET 2013 )

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

Paper chromatography is an example of : (NEET 2020)

The [NH(CH₂)₆NHCO(CH₂)₄CO]n is a

is a polymer which have monomer units as (a) (b) (c) (d)