Acetylene has garlic odour. Why?

What happens when propyne is oxidised with Baeyer's reagent (alkaline KMnO₄) at 298 - 303 K?

33.

What happens when propyne is oxidised with alkaline KMnO₄ at 373-383 K? 

What happens when acetylene is treated with ammoniacal silver nitrate solution?

Write down the structural formulae of the missing compounds:

Mention two reagents which can be used to distinguish between ethene and ethyne.

Although acetylene is acidic in nature, yet it does not react with NaOH or KOH. Explain. 

List the following in order of increasing acidity: propyne, water, propene and propane.

What are benzenoids?

What are non-benzenoids?