Advertisements
Advertisements
प्रश्न
Explain the term ‘dry ice’. State its application.
Advertisements
उत्तर
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.
APPEARS IN
संबंधित प्रश्न
Write the molecular formula of the 2nd and 3rd member of the homologous series whose first member is ethene.
Define the following:
Carbonization
Write the balanced chemical equations for the preparation of carbon dioxide by:
the action of acetic acid on sodium bicarbonate.
Write the balanced chemical equations for the preparation of carbon dioxide by:
the action of dilute sulphuric acid on sodium bicarbonate.
Carbon forms innumerable compounds by combining with other elements. True or false ?
Write three chemical properties of carbon.
Carbon dioxide occurs both in the free state and in the combined state.
State three methods how carbon dioxide is added to the atmosphere.
How would you prove experimentally that carbon dioxide does not support combustion.
Give reason for the following:
Both CO2 & SO2 turn lime water milky. Moist potassium permanganate paper, helps in distinguishing the two gases.
About 18% of the weight of the human body is carbon.
