Please help me with these questions, thanks

1.2 AL 1985 Q12 tI L\\ 'I. A A | AN N IH\\\" TR T TN length/mm 0 0 20 40 60 80 100 temp/ C The graph shows the variations of the lengths of the liquid columns of two liquid-in-glass thermometers with the temperature being measured on the ideal gas scale. What are the Celsius temperatures obtained with these liquid-in-glass scales which correspond to 60 C on the ideal gas scale? Thermometer P Thermometer Q A 50 C 60 C B. 60 C 60 C C. 60 C 70C D. 70C 60 C E. 100 C 90 C 1.4 AL 1987 Q15 P 0 The variations of properties P, Q and R of three different substances with temperature may be used to define three different temperature scales. The variations of P with R and of Q with R are shown above. Which of the following is/are correct? (1) Temperature scales defined in terms of Q and R will agree only at the fixed points. (2) Temperature scales defined in terms of P and R will agree at all points. (3) Temperature scales defined in terms of P and Q will not agree at any point. A. (1), (2)and (3) B. (1)and (2) only C. (2)and (3) only D. (1)only E. (3)only 1.5 AL 1993 Q19 The calibration curve of a resistance thermometer against a constant volume gas thermometer is given below: Resistance / Q 1.6 1.5 1.4 1.3 1.2 1.1 0 20 40 60 80 100 Temperature / C When the resistance thermometer is left in a room, its resistance if found to be 1.28 Q. Find the values of room temperature on both the resistance thermometer scale and the gas thermometer scale. Room temperature on the Room temperature on the gas resistance thermometer scale/C thermometer scale/C A. 36 36 B. cannot be determined 36 C 20 36 D. 20 cannot be determined E. 36 20