Question

Identify the correct statements from the following:
(a) Solid CO is known as dry ice.
(b) The structure of $C_{60}$ contains twenty six carbon rings and twelve five carbon rings.
(c) Hydrated zeolites are used as an ion exchanger in softening of hard water.
(d) $C{O}_2$ is a colorless and odourless gas.

• A. (a) and (c) only
• B. (b) and (c) only
• C. (c) and (d) only
• D. (b), (c) and (d) only

Answer 1

The correct option is D (b), (c) and (d) only

$C{O}_2$ is a colourless and odourless gas. Carbon dioxide can be obtained as a solid in the form of dry ice by allowing the liquefied $C{O}_2$ to expand rapidly.