Write the IUPAC names of the following compounds:
(i)2,2,4-Trimethylpentan-3-ol
(ii)5-Ethylheptane-2,4-diol
(iii)Butane-2,3-diol
(iv)Propane-1,2,3-triol
(v)2-Methylphenol
(vi)4-Methylphenol
(vii)2,5-Dimethylphenol
(viii)2,6-Dimethylphenol
(ix)1-Methoxy-2-methylpropane
(x)Ethoxybenzene
(xi)1-Phenoxyheptane
(xii)2-Ethoxybutane
Arrange the following compounds in increasing order of their boiling points:

The reaction 
suggests that phenol is :
In the reaction R–OH + HCl $\xrightarrow{\text{ZnCl}_2}$ RCl + H$_2$O, what is the correct order of reactivity of alcohols?

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?