Question
https://pg-data.sgp1.digitaloceanspaces.com/chapter_wise/16278/Q25.png1. A glass: Is it made of plastic, steel or glass?
2. A rod: Iron or aluminium.
2. A rod: Iron or aluminium.
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a. Which one freezes in winter?
b. Which liquids have you seen change into a vapour?
c. Which solid directly changes into gaseous state?