It depends on the units in which the "12" is measured. 12 microlitres is a lot less than 3 quarts whereas 12 kilolitres is a lot bigger. You need to think a little before posting your question.
Greater than
6 quarts is less than 2 gallons. Since 1 gallon is equal to 4 quarts, 2 gallons is equal to 8 quarts. Therefore, 6 quarts is less than 8 quarts.
less than
5 quarts is equal to 20 cups, as there are 4 cups in a quart. Therefore, 5 quarts is neither greater nor less than 20 cups; they are equal.
Twenty cups are equal to 5 quarts. Since 1 quart is equal to 4 cups, multiplying 5 quarts by 4 gives you 20 cups. Therefore, 20 cups is neither greater than nor less than 5 quarts; it is equal to it.
Greater than
6 quarts is less than 2 gallons. Since 1 gallon is equal to 4 quarts, 2 gallons is equal to 8 quarts. Therefore, 6 quarts is less than 8 quarts.
less than
It is less.
5 quarts is equal to 20 cups, as there are 4 cups in a quart. Therefore, 5 quarts is neither greater nor less than 20 cups; they are equal.
12 gallons is equal to 48 quarts, so it is less than 50 quarts.
26 pints is greater.
26 pints is greater.
Twenty cups are equal to 5 quarts. Since 1 quart is equal to 4 cups, multiplying 5 quarts by 4 gives you 20 cups. Therefore, 20 cups is neither greater than nor less than 5 quarts; it is equal to it.
3 gallons and 13 quarts is greater than one tiny drop.
it is equal
20 quarts are greater than 80 cups. Since 1 quart is equal to 4 cups, 20 quarts is equivalent to 80 cups (20 quarts x 4 cups/quart = 80 cups). Therefore, they are equal, not greater or less.