Which of the following is the most important biological molecule containing $Mg$ found in living organisms?

Which is correct about saccharin?

During the process of aerobic respiration,acetyl co-enzyme $A$ is formed from which of the following?

Which biological molecule in living organisms contains $Mg$ as an essential component?

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 class of terpenes includes $\beta$-carotene?