NEET Chemistry MCQs

A compound containing only carbon, hydrogen, and oxygen has a molar mass of approximately 90 g/mol. Combustion analysis of 0.405 g of the compound produces 0.54 g $CO_2$ and 0.27 g $H_2O$. If the compound's empirical formula is the same as its molecular formula, what is the number of oxygen atoms in one molecule of the compound?

A gaseous organic compound has an empirical formula $C_xH_y$. When 0.150 g of the compound is completely combusted, it produces 0.225 g of $CO_2$ and 0.090 g of $H_2O$. Given the vapor density of the compound is 29, what is the molecular formula?

What is the process of burning a substance in excess oxygen to determine its composition called?

5.6 g of an organic compound on burning with excess of oxygen gave 17.6g of $C{O_2}$ and 7.2 g of ${H_2}O$. The organic compound is

5.6 g of an organic compound on burning with excess of oxygen gave 17.6g of $C{O_2}$ and 7.2 g of ${H_2}O$. The organic compound is

0.2 g of an organic compound containing C, H and O on combustion yielded 0.147 g ${\rm{C}}{{\rm{O}}_2}$ and 0.12 g water. The percentage of oxygen in it is:

0.2 g of an organic compound containing C, H and O on combustion yielded 0.147 g ${\rm{C}}{{\rm{O}}_2}$ and 0.12 g water. The percentage of oxygen in it is: