下列混合物可用溶解、过滤、蒸发的操作分离的是            

下列混合物可用溶解、过滤、蒸发的操作分离的是                           (   )

   A.混有泥沙的食盐                 B.混有水的酒精

   C.白糖与食盐的混合物             D.铁粉和泥沙的混合物

答案

A

相关题目

如图7-18所示,两端封闭、粗细均匀的细玻璃管,中间用长为h
如图7-18所示,两端封闭、粗细均匀的细玻璃管,中间用长为h的水银柱将其分为两部分,分别充有空气,现将玻璃管竖直放置,两段空气柱长度分别为L1
My cousin came to see me from the country, _______ me a full basket of fresh fr
My cousin came to see me from the country, _______ me a full basket of fresh fruits. A. brought     B. bringing    C. to bring   D. had brought
下列图像不能正确反映所对应叙述关系的是           
下列图像不能正确反映所对应叙述关系的是                         A.t℃时,在一定量的硝酸钾不饱和溶液中逐渐加入硝酸钾固体 B.某
 ---There’s too much salt in the Chinese diet.  ---So there is. The WHO says
 ---There’s too much salt in the Chinese diet.  ---So there is. The WHO says only 1.5 grams of salt ____ for each man every day. A. is needed            B. needs           
称取6.0g含H2C2O4・2H2O、KHC2O4和K2SO4的试样,加水溶解,配成250
称取6.0g含H2C2O4・2H2O、KHC2O4和K2SO4的试样,加水溶解,配成250 mL 溶液。量取两份此溶液各25 mL,分别置于两个锥形瓶中。 ①第一份溶液中加入2滴酚酞试
little girl is only four years old, but she can play the piano and the violin we
little girl is only four years old, but she can play the piano and the violin well. —________ I want to see her. A. No problem.           B. That’s amazing!    C. Bad luck!        
下列反应的离子方程式的书写中,正确的是A.碳酸氢钠溶液
下列反应的离子方程式的书写中,正确的是A.碳酸氢钠溶液与足量氢氧化钡溶液混合:HCO3-+Ba2++OH-=BaCO3↓+H2OB.向氢氧化钠溶液中通入少量二氧
某有机化合物X,经过下列变化后可在一定条件下得到乙酸乙
某有机化合物X,经过下列变化后可在一定条件下得到乙酸乙酯。则有机物X是(    ) A、C2H5OH    B、C2H4 C、CH3CHO   D、CH3COOH

最新题目