Level 1

Which of the following is an example of an amorphous substance?

Which of the following statements is TRUE?

Amorphous substances have_______.
(i) a definite heat of fusion.
(ii) only short range order.
(iii) only long range order.
(iv) an indefinite heat of fusion.

At low temperature and high pressure, ${\text{SO}}_{\text{2}}$ freezes to form a crystalline solid. Which term best describes the solid?

Which of the following is an example of metallic crystal solid?

Among the following, which crystal will be soft and has low melting point?

The unit cell with the following structure refers to______crystal system.

The crystal system of a compound with unit cell dimensions $\mathrm{a}=0.387, \mathrm{b}=0.387 \text{and} \mathrm{c}=0.504 \mathrm{nm}$ and $\mathrm{\alpha }=\mathrm{\beta }=90º \text{and} \mathrm{\gamma }=120º$ is