Aldehydes Keton...

The relative acidity of the indicated $$H$$ in each of the following is :

What is $$I$$ and name of reaction?

Write IUPAC name of the following compound.

The IUPAC name for 
$$CH_{ 3 }-{ \overset { \overset { O }{ \parallel  }  }{ C } -CH }_{ 2 }-C{ H }_{ 2 }-\overset { \overset { O }{ \parallel  }  }{ C } -OH$$

The correct product of the following reaction is: 

Compound X produces a carboxylic acid when heated under reflux with acidified potassium dichromate(VI). Compound X does not react with sodium metal.
What could be the identity of compound X?

Find the end product of reaction.

Alcohols, aldehydes and nitriles can each be converted into carboxylic acids. Which descriptions of their conversions into carboxylic acids are correct?

Which product is formed when $$3$$-methylpentane-$$1, 3, 4$$-triol is heated under reflux with an excess of acidified potassium dichromate(VI)?

What is sequence of reagent use to convert following?