Which one of the following is used as a refrigerant for ice-cream and frozen foods?
- ADry $CO_2$
- BLiquid $CH_4$
- CDry ice
- DLiquid $H_2$
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Similar Questions
Which one of the following statements about allotropes of carbon is incorrect?
When silicate units are linked together,they form which type of structures?
Easy
View SolutionWhich of the following is an amphoteric oxide?
State True or False for the following statements:
$(1)$ Fullerene has $20$ rings of $6$ members and $12$ rings of $5$ members.
$(2)$ $CO$ is neutral while $CO_2$ is acidic.
$(3)$ Boron fibres are used in making light composite material for aircraft.
$(4)$ When borax is heated in a Bunsen burner flame with $CoO$ on a loop of platinum wire,a yellow coloured $Co(BO_2)_2$ bead is formed.
$(1)$ Fullerene has $20$ rings of $6$ members and $12$ rings of $5$ members.
$(2)$ $CO$ is neutral while $CO_2$ is acidic.
$(3)$ Boron fibres are used in making light composite material for aircraft.
$(4)$ When borax is heated in a Bunsen burner flame with $CoO$ on a loop of platinum wire,a yellow coloured $Co(BO_2)_2$ bead is formed.
Difficult
View SolutionThe presence of $Si$ in steel gives it
Easy
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