Chapter 30

Which of the following is not an example of broad spectrum antibiotic? (a) Penicillin (b) Tetracycline (c) Chloremphenicol (d) Vancomycin

A gas \(\mathrm{X}\) is passed through water to form a saturated solution. The aqueous solution on Ireatment with silver nitrate gives a white precipitate. The saturated aqueous solution dissolves magnesium ribbon with evolution of a colorless gas ' \(Y^{\prime}\). Identify \(X\) and \(\bar{Y}\) (a) \(\mathrm{X}=\mathrm{CO}_{2}, \mathrm{Y}=\mathrm{Cl}_{2}\) (b) \(\mathrm{X}=\mathrm{Cl}_{2}, \mathrm{Y}=\mathrm{CO}_{2}\) (C) \(\mathrm{X}=\mathrm{Cl}_{2}, \mathrm{Y}=\mathrm{H}_{2}\) (d) \(\mathrm{X}=\mathrm{H}_{2}, \mathrm{Y}=\mathrm{Cl}_{2}\)

What should be the feature of detergent molecule structure to be biodegradable ? (a) it should be saturated (b) it should be unsaturated (c) branching should be maximum (d) branching should be minimum

When \(\mathrm{H}_{2} \mathrm{~S}\) gas is passed through the salt solution in the presence of \(\mathrm{HCl}\), which of the following is not precipitated? (a) Nis (b) \(\mathrm{CdS}\) (c) \(\mathrm{CuS}\) (d) \(\mathrm{Sb}_{2} \mathrm{~S}_{3}\)

When \(\mathrm{H}_{2} \mathrm{~S}\) gas is passed through the salt solution in the presence of \(\mathrm{HCl}\), which of the following is not precipitated? (a) Nis (b) \(\mathrm{CdS}\) (c) \(\mathrm{CuS}\) (d) \(\mathrm{Sb}_{2} \mathrm{~S}_{3}\)

Identify the bactericidal antibiotic from the following (a) tetracycline (b) ofloxacin (c) erythromycin (d) chloremphenicol

A mixture of chlorides of copper, cadmium, chromum, iron and aluminum was dissolved in water acidified with HCl and hydrogen sulphide gas was passed for sufficient time. It was filtered, boiled and a few drops of nitric acid were added while boiling. To this solution ammonium chloride and sodium hydroxide were added and filtered. The filtrate shall give test for (a) sodium and iron (b) sodium and aluminum (c) sluminum and iron (d) sodium, iron, cadmium and aluminum

A metal nitrate on reaction with \(\mathrm{KI}\) gives black precipitate and with exeess \(\mathrm{KI}\) gives orange solution. The metal ion is (a) \(\mathrm{Hg}^{2+}\) (b) \(\mathrm{Pb}^{2+}\) (c) \(\mathrm{Cu}^{2+}\) (d) \(\underline{\mathrm{B} i}^{\mathrm{M}}\)