Explain the term ‘dry ice’. State its application.

Answer in Brief

Liquid carbon dioxide on sudden evaporation results in freezing and forming solid carbon dioxide called 'dry ice'.

Applications : Dry ice is used as a refrigerant for the preservation of foods as it freezes faster and lasts longer than ordinary ice.

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Chapter 9: Carbon & Its Compounds - Exercises

Chapter 9 Carbon & Its Compounds
Exercises | Q 16.1

Choose the correct alternative

Lamp black is

State two characteristic features of carbon which when put together give rise to a large number of carbon compounds.

Answer the following question.
Draw methane electron dot structure.

Starting from carbon dioxide how would you obtain a highly poisonous gas.
[Give balanced equations for the same]

State how you would convert carbon dioxide to a metallic carbonate using a basic oxide e.g. sodium oxide. [Give a balanced equation]

Select the appropeiate option of the following statement:

An allotrope of carbon obtained by burning kerosene oil in a limited supply of air.

Select the appropeiate option of the following statement:

A nitrogenous fertilizer obtained from carbon dioxide.

Match the following.

Which of the following is highly toxic?