MCQ: which of the following biomolecules contain carbon hydrogen and oxygen?
(A).benzene
(B).carbon dioxide
(C).carbohydrates
(D).pentane
Question’s Answer: carbohydrates
Carbohydrates are group of organic compound that contain carbon hydrogen and oxygen in 1:2:1 ratio. These compounds are used as a source of energy while performing function such as glucose fructose etc.
Characteristics |
Details |
Symbol |
H |
Atomic mass |
1.008 u |
Atomic number |
1 |
Atomic mass |
1.008 u |
Electronic configuration |
1s<sup>1</sup> |
Period |
1 |
Block |
S |
Electronegativity |
2.20 (Pauling scale) |
Density |
0.08988 g/L at STP |
State of matter at room temperature |
Gas |
Oxidation states |
+1, -1 |
Ionization energy |
1312.0 kJ/mol |
Isotopes |
Hydrogen has three isotopes;
1. protium (1H)
2. deuterium (2H)
3. tritium (3H). |
Melting point |
-259.14°C |
Boiling point |
-252.87°C |