Temperature Concepts

The temperature range of Fahrenheit scale is 94 - 108 degrees.

The temperature range of a clinical thermometer is 35 - 42 degrees.

The range of a lab thermometer is minus 10 - 110 degrees.

Setting -40°C = -40°F in the conversion formula F = (9/5)C + 32 gives -40 = (9/5)(-40) + 32 = -72 + 32 = -40, which is true. This is the only temperature where both scales give identical readings.

Using the formula C = (F-32) × 5/9: (98.6-32) × 5/9 = 66.6 × 5/9 = 37°C. This is the standard normal human body temperature. Options A and B are miscalculations.

The photosphere (visible surface of the Sun) has a temperature of approximately 6000 K (about 5700°C). This is why the Sun appears white/yellow to us - it emits light characteristic of a 6000 K black body radiator.

Acetylene torch is 6000 degrees Fahrenheit or 3315 degrees Celsius. The oxy-acetylene flame is used in the torch and this flame can melt any commercial metal.

During pasteurisation, milk is heated at 60°C for 30 minutes, and then quickly chilled.

The optimum range for seed germination is 25°C to 35°C.

This is the correct option. The ignition temperature of phosphorus is 35^oC.

Since 0^oC = - 273 K, then 666^oC = - 273 + 666 = 393 K

273 K = 0^oC, 75^oC = 273 + 75 = 348 K

273 K = 0^oC 300 K = 300 - 273 = 27^oC

273 K = 0^oC,

• 127 ^oC = 273 + (- 127) = 273 – 127 = 146 K.

Water boils at 100°C (212°F) at standard atmospheric pressure (sea level). This is a fundamental property of water and is used as a reference point for the Celsius temperature scale.