Which of the following is paraldehyde ?

which of the following is not ?

which of the following is not ?

Which of the following is an example of condensation polymer (or) Which of the following is not an example of addition polymer

Which of the following is an example of condensation polymer (or) Which of the following is not an example of addition polymer

Which of the following is/are not the products in the following reaction?

Which of the following is/are not the products in the following reaction?

Which one of the following is hardest compound of the following.

which of the following is not related with following plants ?