Question

12. The melting and boiling points of four different
substances are shown in the table. The room temperature
is 30°C
Substance Melting point (°C) Boiling point (°C)
P
- 114
80
- 210
- 196
R
- 40
360
SI 330
1750
Which of the following statements are incorrect about
the data given in the table?
(i) Substance P is in solid state at room temperature.
(ii) Substance Q is in liquid state at room temperature.
(iii) Substance R is gas at -150°C and solid at -220°C.
(iv) Substance S is in solid state at room temperature.
A. (i) and (ii) only
B. (i), (ii) and (iii) only
C. (iii) and (iv) only D. (i), (ii), (iii) and (iv)​

Answer 1

Answer:

B. (1),(2)&(3)..................