Which of the following is not the product of dehydration of

Which of the following is the major product of dehydration of 3, 3-dimethylbutan-2-o1 using H_(2)SO_(4) ?

Which of the following is not the dehydration product of the alcohol , , ,

Propene is not the product obtained by dehydration of :

Which of the following is not a drying and dehydrating agent ?