Chemistry Test ...

‘\(A\)’ has \(9\) protons, \(9\) electrons and \(10\) neutrons. '\(B\)' has \(12\) protons, \(12\) electrons and \(12\) neutrons. Formula between \(A\) and \(B\) is:

Identify the given structure.

\(\mathrm{HO}-{\underset{\mathrm{O}}{\underset{\|}{\overset{\mathrm{O}}{\overset{\|}{\mathrm{S}}}}}}-\mathrm{O}-\mathrm{OH}\)

The metal used to detect nitrogen in an organic compound is:

Pick out the crystalline substance from the following.

Which of the following are isotopes and which are isobars? 

Argon \((\mathrm{Ar})\), Deuterium \((\mathrm{D})\), Calcium \((\mathrm{Ca})\), Tritium \((\mathrm{T})\), Protium \((\mathrm{P})\)

Which molecule/ion out of the following does not contain unpaired electrons?

What is the denticity of the ligand shown in the figure?

Which of the following alcohols is the least soluble in water?

Which one of the following ores is best concentrated by froth-floatation method?