Nitroglycerine is

The vapours of an alcohol $(X)$ are passed over $Cu$ heated at $300^{\circ} C$,where an alkene is formed as the product. The alcohol $(X)$ is expected to be $:-$

Which of the following compounds is used as an antifreeze agent in automobile radiators?

Among the following,the one that gives a positive iodoform test upon reaction with $I_2$ and $NaOH$ is

Which of the following is the most suitable method to remove small amounts of water from ethanol?

Number of isomeric alcohols of molecular formula $C_6H_{14}O$ which give positive iodoform test is