I would like to know 2 questions.this is very simple.
1.Why RNA is readily hydrolysed by Alkali and why is DNA not hydrolysed?
2.How DNA strand synthesis are replication florae?Please kindly reply.

Thanks,
Chan, Myanmar

It IS very simple...

Amhd site rules state that we will not do your homework for you.
https://www.askmehelpdesk.com/math-sciences/announcement-font-color-ff0000-u-b-read-first-expectations-homework-help-board-b-u-font.html

We will gladly look over your ideas about the answers and talk with you... but if you are not willing to do any work, it will not be rewarded here.

The answer to 1 requires you to know the difference in structure between dna and rna...

Question two doesn't make sense...