Which functional group is found in methanol? r-o-r -nh2 -oh r-xits -oh  i just took the test

Option (c) is the correct answer.

Explanation:

In order to know the functional group present in a molecule the suffix at the end helps in determining it.

Hence, in methanol suffix is 'ol'.

Therefore, the functional group present in methanol is the hydroxyl group, that is, OH group is present.

Thus, we can conclude that functional group is found in methanol is -OH.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.