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Chemistry Past Questions and Answers

Neco Chemistry Questions

Question 56:

What is formed when starch is completely hydrolysed?

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A Fructose
B Glucose
C Lactose
D Maltose
E Sucrose

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Question 57:

Which hydrocarbon does NOT exhibit structural isomerism?

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A C₃H₆
B C₄H₆
C C₄H₈
D C₄H₁₀
E C₅H₁₂

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Question 58:

Why is tetraoxosulphate(VI) acid NOT used for making carbon dioxide from calcium carbonate? It is ____________

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A A dehydrating agent
B A strong acid
C An oxidising agent
D Dibasic
E Forms insoluble calcium tetraoxosulphate(Vl)

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Question 59:

Which metal is extracted from bauxite?

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A Aluminium
B Calcium
C Copper
D Magnesium
E Tin

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Question 60:

Which separation technique is routinely applied in the petroleum industry?

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A Chromatography
B Distillation
C Evaporation
D Fractional crystallization
E Fractional distillation

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