Hydrocarbons — Chemistry STD 11 Science — Question

$(A)$ Atoms of different elements differ in mass.

$(B)$ Matter consists of divisible atoms.

$(C)$ Compounds are formed when atoms of different element combine in a fixed ratio.

$(D)$ All the atoms of given element have different properties including mass.

$(E)$ Chemical reactions involve reorganisation of atoms.

Choose the correct answer from the options given below :

Statement $I$ :- Methyl orange is a weak acid.

Statement $II$ :- The benzenoid form of methyl orange is more intense/deeply coloured than the quinonoid form.

In the light of the above statement, choose the most appropriate answer from the options given below :-

$S_8,\,S_2O_3^{2-},\, S_2O_7^{-2},\, S_4O_6^{-2},\, SO_3^{-2}$