Question 1

A laboratory thermometer reads 68°F. What is the temperature in degrees Celsius?

Accepted Answer

20°C

Question 2

Which of the following statements best explains why the Kelvin scale is preferred in scientific calculations such as the ideal gas law?

Accepted Answer

Kelvin temperatures are always positive, avoiding negative values that can cause errors in equations.

Question 3

A chemical reaction is carried out at 350 K. What is the equivalent temperature in degrees Celsius?

Accepted Answer

76.85°C

Question 4

A patient’s body temperature is measured at 39°C. What is this temperature in Fahrenheit?

Accepted Answer

102.2°F

Question 5

Which of the following conversions is correct for converting 0°C to Kelvin?

Accepted Answer

0°C = 273.15 K

Question 6

A scientist needs to cool a reaction mixture to -40°F. What is this temperature in degrees Celsius?

Accepted Answer

-40°C

Question 7

If the boiling point of water is 100°C, what is its value in Fahrenheit and Kelvin, respectively?

Accepted Answer

212°F and 373.15 K

Question 8

A sample is kept at 25°C in a laboratory. What is the temperature in Kelvin and Fahrenheit?

Accepted Answer

298.15 K and 77°F

Question 9

Which of the following best describes the difference between the Celsius and Fahrenheit scales?

Accepted Answer

They have different zero points and different degree sizes.

Question 10

A researcher records a temperature of 310 K during an experiment. What is the temperature in degrees Celsius and Fahrenheit?

Accepted Answer

36.85°C and 98.33°F

Question 11

Which of the following is the correct sequence of steps to convert 68°F to Kelvin?

Accepted Answer

Subtract 32, multiply by 5/9, then add 273.15

Question 12

Absolute zero is defined as 0 K. What is this temperature in degrees Celsius and Fahrenheit?

Accepted Answer

-273.15°C and -459.67°F

Question 13

A weather report states the temperature is 15°C. Which of the following is the correct temperature in Fahrenheit?

Accepted Answer

59°F

Question 14

A chemical process requires a temperature of 77°F. What is this temperature in Kelvin?

Accepted Answer

298.15 K

Question 15

Which of the following best explains why Celsius and Kelvin scales have the same degree size?

Accepted Answer

Both scales are based on the same interval between freezing and boiling points of water.

Question 16

A student incorrectly converts 50°F to Celsius by multiplying by 5/9 and then adding 32. What is the error in this method?

Accepted Answer

The student should subtract 32 before multiplying by 5/9.

Mathematical Relationships Between Temperature Scales

Study Guide - Practice Questions