Temperature Scales Quiz PDF: Questions and Answers - 127

MCQ 631: An aluminum wire resists 70 Ω at ice point and 120 Ω at steam point, and the resistance of wire is 90 Ω the room temperature would be

1. 10 °C
2. 20 °C
3. 30 °C
4. 40 °C

MCQ 632: If a car accelerates from 20 m s^-1 to 40 m s^-1 in 10 s and its forward thrust is equal to 3 kN, what is the mass of this car?

1. 1500 tones
2. 150 tones
3. 15 tones
4. 1.5 tones

MCQ 633: Formula for acceleration is

1. change in velocity/time taken
2. distance covered/time taken
3. time taken/change in velocity
4. change in velocity/displacement covered

MCQ 634: A student heats up a liquid from 20 °C to 30 °C with the thermal energy of 12000 J. If the mass of the liquid is 12 kg the specific heat capacity would be

1. 25 J kg^-1 °C^-1
2. 50 J kg^-1 °C^-1
3. 75 J kg^-1 °C^-1
4. 100 J kg^-1 °C^-1

MCQ 635: Brass has the specific heat capacity of

1. 300 J kg^-1 °C^-1
2. 340 J kg^-1 °C^-1
3. 380 J kg^-1 °C^-1
4. 420 J kg^-1 °C^-1