Refrigeration capacity of a household refrigerator may be round about __________ tons.

ANS:A - 0.15

The refrigeration capacity of a household refrigerator is typically around 0.15 tons. Household refrigerators are usually small-scale refrigeration systems designed for domestic use. Their cooling capacities are measured in tons of refrigeration (TR), where 1 ton of refrigeration is equal to the cooling capacity provided by the melting of 1 ton of ice in 24 hours, which is approximately equal to 12,000 BTU/hr. Given that household refrigerators are small and not intended for heavy-duty cooling like commercial or industrial refrigeration systems, their capacities are typically much lower. A typical household refrigerator might have a capacity ranging from 0.1 to 0.2 tons, with 0.15 tons being a common value. Therefore, the closest option to this would be 0.15 tons.