Which property of colloidal solution is independent of charge on the colloidal particles?

• Coagulation

• Electrophoresis

• Electroosmosis

• Tyndall effect

In Duma's method for estimation of nitrogen 0.25 g of an organic compound gave 40 ml of nitrogen collected at 300 K temperature and 725 mm pressure. If the aqueous tension at 300 K is 25 mm the percentage of nitrogen in the compounds is,

• 17.36

• 18.20

• 16.76

• 15.76

The function of 'sodium pump' is a biological process operating in each and every cell of all animal. Which of the following biologically important ions is also a constituent of this pump?

• Ca²⁺

• Mg²⁺

• K⁺

• Fe²⁺

• softner

• dryner

• buffering agent

• antiseptic

The electrolytic reduction of nitrobenzene in strongly acidic medium produces

• p-aminophenol

• azoxybenzene

• azobenzene

• aniline

In which of the following compounds, the C-Cl bond ionisation shall give most stable carbonium ions?

The reaction,


is called,

• Williamson synthesis

• Williamson continuous etherification process

• Etard reaction

• Gattermam -Koch reaction

38.

The reaction of C₆H₅CH=CHCH₃ with HBr produces

• 

• 

• C₆H₅CH₂CH₂CH₂Br

• 

A single compound of the structure is



obtainable from ozonolysis of which of the following cyclic compound?

Treatment of cyclopentanone 

methyl lithium gives which of the following species?

• Cyclopentanonyl anion

• Cyclopentanonyl cation

• Cyclopentanonyl radical

• Cyclopentanonyl biradical