The correct equilibrium order for the interconversion of different forms of SiO₂ is · ABC26IN1256

Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Elements – General · Exam: CSIR NET JUNE 2013 · Marks: 2 · Difficulty: Easy

The correct equilibrium order for the interconversion of different forms of $\mathrm{SiO}_{2}$ is
(a)Tridymite $\rightleftharpoons$ quartz $\rightleftharpoons$ cristobalite $\rightleftharpoons$ liquid $\mathrm{SiO_2}$
(b)quartz $\rightleftharpoons$ Tridymite $\rightleftharpoons$ cristobalite $\rightleftharpoons$ liquid $\mathrm{SiO_2}$
(c)quartz $\rightleftharpoons$ cristobalite $\rightleftharpoons$ tridymite $\rightleftharpoons$ liquid $\mathrm{SiO_2}$
(d)cristobalite $\rightleftharpoons$ tridymite $\rightleftharpoons$ quartz $\rightleftharpoons$ liquid $\mathrm{SiO_2}$
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
With rising temperature: α-quartz → β-quartz (573 °C) → tridymite (870 °C) → cristobalite (1470 °C) → liquid (1710 °C).

Study loop for Main Group Elements

1. Practise the PYQsPrevious-year questions, with answers

· Browse this chapter in the app