Acetaldehyde reacts with $C_2H_5MgCl$. The final product is

Paraldehyde is

Which of the following compounds,upon hydrolysis followed by heating,gives a product that yields a positive iodoform test?

Assertion : The boiling points of aldehydes and ketones are higher than hydrocarbons and ethers of comparable molecular masses.
Reason : There is a weak molecular association in aldehydes and ketones arising out of the dipole-dipole interactions.

The reaction of cyclopentanone with $NaOBr$ gives which product?
$\text{Cyclopentanone} \xrightarrow{NaOBr} \text{Product}$

Identify the test from the following in which an aldehyde,when boiled with an ammoniacal silver nitrate solution,deposits silver.