Which of the following is not used in rocket propellants

1.	Which of the following is not used in rocket propellants
A.	\[{{H}_{2}}(l)\]
B.	\[{{O}_{2}}(l)\]
C.	Methane
D.	\[{{N}_{2}}{{H}_{4}}(l)\]
Answer» D. \[{{N}_{2}}{{H}_{4}}(l)\]

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Which of the following is not used in rocket propellants

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