Which statement is true about Wittig reaction?

The acid-catalyzed reaction of propanal with two equivalents of methanol forms an acetal. This can mechanistically be thought of as  

Which one of the following statements is true about ketones?

Which of the following condition cannot be used for the aldehyde preparation? ©GMU@X@user.pk_string@X@  

These/is are/is enzyme/s that the bacteria use to invade the host body

What is the product?   ©GMU@X@user.pk_string@X@ ©GMU@X@user.pk_string@X@ ©GMU@X@user.pk_string@X@  

Which is the best route to this final compound?   ©GMU@X@user.pk_string@X@ ©GMU@X@user.pk_string@X@ ©GMU@X@user.pk_string@X@  

Virulence is a qualitative measure of pathogenesity

Which of the following group is an activating group and ortho/para director? ©GMU@X@user.pk_string@X@  

Adherence of the bacteria to the host tissue is achieved through a cellular structure like intracellular chemical substances