How many isoprene units are present in abscisic acid?

Which one of the following tests used for the identification of functional groups in organic compounds does not use copper reagent?

Number of compounds from the following which will not produce orange red precipitate with Benedict's solution is $..............$. Glucose,maltose,sucrose,ribose,$2$-deoxyribose,amylose,lactose.

Which of the following matches is wrong?

Which is correct about saccharin?

Yeast cells derive their energy from glucose by