MCQ Collection

eju-science-chemistry MCQs

Practice eju-science-chemistry questions with answers and explanations.

eju-science-chemistry EJU Chemistry JapanMedium

EJU Chemistry practice 68: Using the accompanying practice context, a reactant is added to a system at dynamic equilibrium. What does Le Châtelier’s principle predict?

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eju-science-chemistry EJU Chemistry JapanMedium

EJU Chemistry practice 59: Using the accompanying practice context, what is [H⁺] for a solution of pH 6?

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eju-science-chemistry EJU Chemistry JapanMedium

EJU Chemistry practice 60: Using the accompanying practice context, a reactant is added to a system at dynamic equilibrium. What does Le Châtelier’s principle predict?

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eju-science-chemistry EJU Chemistry JapanMedium

EJU Chemistry practice 61: Using the accompanying practice context, which statement correctly describes oxidation?

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eju-science-chemistry EJU Chemistry JapanMedium

EJU Chemistry practice 62: Using the accompanying practice context, what is the principal effect of a catalyst?

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eju-science-chemistry EJU Chemistry JapanMedium

EJU Chemistry practice 63: Using the accompanying practice context, a hydrocarbon contains a carbon–carbon double bond. To which homologous series does it belong?

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eju-science-chemistry EJU Chemistry JapanMedium

EJU Chemistry practice 49: Using relative atomic mass 23, what is the mass of 5 mol of Na atoms?

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eju-science-chemistry EJU Chemistry JapanMedium

EJU Chemistry practice 50: Using the accompanying practice context, which bond forms when two non-metal atoms share electron pairs?

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eju-science-chemistry EJU Chemistry JapanMedium

EJU Chemistry practice 51: Using the accompanying practice context, what is [H⁺] for a solution of pH 3?

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eju-science-chemistry EJU Chemistry JapanMedium

EJU Chemistry practice 52: Using the accompanying practice context, a reactant is added to a system at dynamic equilibrium. What does Le Châtelier’s principle predict?

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eju-science-chemistry EJU Chemistry JapanMedium

EJU Chemistry practice 53: Using the accompanying practice context, which statement correctly describes oxidation?

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eju-science-chemistry EJU Chemistry JapanMedium

EJU Chemistry practice 54: Using the accompanying practice context, what is the principal effect of a catalyst?

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