Select the molecule which has only one \(\pi\) bond.

Which one of the following names does not fit a real name?

The number of stereoisomers of 1, 2 – dihydroxy cyclopentane ________

Lassaigne’s test for the detection of nitrogen fails in ______________

In an organic compound, phosphorus is estimated as ____________

Tetravalency of carbon is possible in the case of ________

The compound which has one isopropyl group is _________

The property catenation is possible in__________

2-butenes an example of__________ compound

Copper oxide test is used to detect___________

The formula of ammonium phospho molybate is__________

The mixture of diethyl ether and ethanol can be purified by____________

Give the general characteristics of organic compounds?

Write a note on homologous series.

Give the general formula for the following classes of organic compounds
Aliphatic monohydric alcohol

Write the molecular and possible structural formula of the first four members of homologous series of carboxylic acids.

Give the principle involved in the estimation of halogen in an organic compound by carius method.

Explain paper chromatography.

Write structural formula for the following compounds
(i) Cyclohexa-1, 4-diene
(ii) Ethynyl cyclohexane.

Write all the possible isomers of molecular formula C₄H₁₀O and identify the isomerisms found in them.

0.284 g of an organic substance gave 0.287 g AgCl in a carius method for the estimation of halogen. Find the Percentage of Cl in the compound.

0.24 g of organic compound containing phosphorous gave 0.66 g of Mg₂P₂O₇ by the usual analysis. Calculate the percentage of phosphorous in the compound.

0.185 g of an organic compound when treated with Conc. HNO₃ and silver nitrate gave 0.320 g of silver bromide. Calculate the % of bromine in the compound. (Ag =108, Br = 80)

List down the characteristics possessed by the organic compounds.