List of top Chemistry Questions on Methods Of Purification Of Organic Compounds

In carius method of estimation of 'Br' 1.53 gm of an organic compound gave 1 gm AgBr. The % of Br in organic compound is (At. mass of Ag and Br are 108 and 80 amu respectively)
Methods used for purification of organic compounds are based on :
Which of the following is structure of a separating funnel?
Geraniol, a volatile organic compound, is a component of rose oil. The density of the vapour is 0.46 gL–1 at 257°C and 100 mm Hg. The molar mass of geraniol is ____ g mol –1. (Nearest Integer) [Given: R = 0.082 L atm K–1 mol–1]
Kjeldahl’s method was used for the estimation of nitrogen in an organic compound. The ammonia evolved from 0.55 g of the compound neutralised 12.5 mL of 1 M H2SO4 solution. The percentage of nitrogen in the compound is _____. (Nearest integer)
C6H12O6 \(\underrightarrow{Zymase}\) A\(\frac{\underrightarrow{NaOI}}{Δ}\)B+CHI3 
The number of carbon atoms present in the product B is_________.

Using the provided information in paper chromatography

The calculated $R_f$ value of A is __________ $\times 10^{-1}$.

If dichloromethane (DCM) and water ${(H_2O)}$ are used for differential extraction, which one of the following statements is correct ?
The principle of column chromatography is :
The anthracene is purified by
Sometimes, the colour observed in Lassaigne’s test for nitrogen is green. It is because:
The anthracene is purified by:
For which of the following compounds Kjeldahl method can be used to determine the percentage of Nitrogen ?
In paper chromatography:
Liebig’s method is used for the estimation of