What is the monomer unit of Teflon?

Why should we prefer vegetable oils over animal fats for cooking food? Give a balanced chemical equation for the reaction for hydrogenation of vegetable oils. Name the catalysts in this reaction.

What is the boiling point of propanone (in $;K$)?

An organic compound burns with a sooty flame. Is it a saturated or an unsaturated compound?

$A$ molecule of ammonia has the formula $NH_{3}$. Predict the total number of bonds present around the nitrogen atom.

State the two properties of carbon which make it unique among other elements. State the two uses of carbon which are based on its unique property.