Stoichiometry
The heat capacity of a substance is

Higher for solid state than for liquid state
Greater for liquid state than for solid state
Lower for liquid state than for gaseous state
Equal for solid and liquid states below melting point

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Stoichiometry
A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the

Atomic weight of the metal is 4
Equivalent weight of the metal is 4
Equivalent weight of the metal is 8
Atomic weight of the metal is 2

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