Chemistry Test ...

A compound with molecular mass 180 is acylated with CH₃COCl to get a compound with molecular mass 390. The number of amino groups present per molecule of the former compound is:

An unknown alcohol is treated with the “Lucas reagent” to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism

Consider the following reaction

The values of x, y and z in the reaction are, respectively:

For gaseous state, if most probable speed is denoted by C*, average speed by C and mean square speed by C, then for a large number of molecules the ratios of these speeds are:

The molarity of a solution obtained by mixing 750 mL of 0.5 (M) HCl with 250 mL of 2(M)HCl will be

Four successive members of the first row transition elements are listed below with atomic numbers. Which one of them is expected to have the highest  value?

Which of the following represents the correct order of increasing first ionization enthalpy for Ca, Ba, S, Se and Ar?

Which one of the following molecules is expected to exhibit diamagnetic behaviour?

Energy of an electron is given by E= -2.178 x 10^-18J. Wavelength of light required to excite an electron in an hydrogen atom from level n = 1 to n = 2 will be.

Based on the data given above, strongest oxidising agent will be: