What is the lightest element in the periodic table?

Which process converts vegetable oils into solid fats by adding hydrogen in the presence of a nickel catalyst?

What is formed when an alcohol reacts with a carboxylic acid?

What is the chemical symbol for water?

Which type of reaction occurs when a more reactive metal displaces a less reactive metal from its salt solution?

Which reaction type involves the breaking of a large molecule into smaller ones?

Which element is the most abundant in the universe?

Which test is used to detect the presence of starch using iodine solution?

Which type of reaction in organic chemistry involves replacing a hydrogen atom with another atom or group?

What is the atomic number of oxygen?

Which element is a semiconductor and is the main component of computer chips?