is there a difference between metricton,metrictonne,and metrictone....apart from their different spellings ???

Answer 1

Metric ton is "tonne". Saying metric tonne is redundant, and spelling them as single words is incorrect.

A ton = 2000 lb
A tonne = 1000 Kg or 2204 lb (a metric ton; "metric" because it is based on Kilograms, a unit of the MKs or metric system).

Hope this helps...

Answer 2

No difference.
In refrigeration and air-conditioning, a refrigeration ton can be:
The power required to cool 1 short ton of water by 1 °F every 10 minutes = 12,000 BTU/h ≈ 3,516.85284 W
The power required to cool 1 long ton of water by 1 °F every 10 minutes = 13,440 BTU/h ≈ 3,938.87518 W
A corresponding unit of energy equal to that power for a period of a day, or 24h × 12,000 BTU/h = 288,000 BTU ≈ 303,856,086 J
The power required to freeze one short ton (2000 lb) in 24 hours.
long ton (simply ton in countries such as the United Kingdom which formerly used the Imperial system of weights and measures) is a weight ton or gross ton, and is 2,240 lb (exactly 1,016.0469088 kg). In the UK and most of the areas which used the Imperial system, the metric tonne (1000 kg), which it is conveniently very similar to—less than 2% difference, is the only form of ton legal for trade.
Increasingly, metric tonnes are being used rather than long tons in measuring the displacement of ships. See tonnage.
The long ton is used for petroleum products such as aviation fuel.
Deadweight ton (abbreviation 'dwt') for the capacity of a ship in the number of long tons (2,240 pounds). This measurement is also used in the U.S. tonnage of naval ships.
short ton (usually called simply ton in the USA or sometimes called a net ton) = 2000 lb (exactly 907.18474 kg).
Harbour ton used in South Africa in the 20th century, equal to 2000 pounds or one short ton.
metric ton, often referred as tonne, is 1000 kg (also 10^3 kg, 1 E3 kg or 1 Mg).
For more:
http://en.wikipedia.org/wiki/Ton

Answer 3

No.