Question

Solid carbon dioxide is also known as:
A. Ice
B. Dry ice
C. Compressed ice
D. None of the above

Answer 1

Hint: The answer to this question is based on the basic concept of chemistry and this includes the fact about the properties of carbon dioxide and its use in daily life as solid carbon dioxide and this fact gives you the correct answer.

Complete answer:
We have come across various naturally available gases in the atmosphere and its uses and properties in the classes of general chemistry.
Now, we shall see what are the properties of carbon dioxide and in which all forms can it exist which helps us to understand the basic concept.
- Carbon dioxide is the natural gas which is in the atmosphere that is released by the respiration process of all the living creatures on earth.
- It has the formula $C{{O}_{2}}$ and this gas produced by the respiration is absorbed by plants and it produces oxygen necessary for the balance of life cycle.
- Carbon dioxide is the greenhouse gas which can exist in two forms that is gaseous and solid state.
- The solid carbon dioxide is used as a cooling agent and also in the fog machines at theatres for the dramatic effect.
- This looks like a white ice and is also a dangerous thing to handle without protection.
Based on all these above facts, we can say that solid carbon dioxide is also called dry ice as it does not melt like normal water ice rather it sublimates and hence the name.

Thus, the correct answer is option B. Dry ice.

Note:
Note that the solid carbon dioxide has lower temperature when compared to that of water ice and does not leave any residue and is used for preserving frozen foods in the areas where the mechanical cooling is unavailable.