下表中对应关系正确的是( ) ACH3CH3+Cl2CH3CH2Cl+HCl CH2===CH2+HCl―→CH3

下表中对应关系正确的是(  )

                

A

CH3CH3Cl2CH3CH2ClHCl

CH2===CH2HCl→CH3CH2Cl

均为取代反应

B

由油脂得到甘油

由淀粉得到葡萄糖

均发生了水解反应

C

Cl22Br===2ClBr2

ZnCu2===Zn2Cu

均为单质被还原的置换反应

D

2Na2O22H2O===4NaOHO2

Cl2H2O===HClHClO

均为水作还原剂的氧化还原反应

答案

B [解析] CH2===CH2HCl的反应为加成反应,A项错误;油脂水解生成甘油和高级脂肪酸,淀粉水解的最终产物为葡萄糖,B项正确;ZnCu2===Zn2Cu的反应中被还原的是Cu2C项错误;Na2O2H2O的反应中氧化剂、还原剂均为Na2O2Cl2H2O的反应中氧化剂、还原剂均为Cl2D项错误。

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