21⟩ Where the cryogenic engines are used?
Rockets
Government SSC General Science
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25 Government SSC General Science Questions And Answers
22⟩ Which variety of glass is heat resistant?
Pyrex glass
23⟩ What is the general color of emerald?
Deep green
24⟩ How an ant can see the objects all round?
It is due to the presence of compound eyes, one on each side
of the head. Each eye consists of tiny lenses set close
together. The number of lenses varies from fewer than 6 to
more than 1,000
25⟩ By polymerization of which, PVC is obtained?
Vinyl Chloride
