1. Whether is it possible to group the participants? If so please let me know how.
2. If the grouping is possible then whether we can have a comparison between the groups?
3. Is there any options to show the browsing survey result as a simplified one eg. DataTable with search.

1. Whether is it possible to group the participants? If so please let me know how.

Do you want to group before or during the survey?
Before: use token attributes.
During: well, you have the answer to the grouping question.

2. If the grouping is possible then whether we can have a comparison between the groups?

In your statistic tool (CHI-square, t-Test, Wilcoxon-Test, Mann-Whitney U (K)-Test, etc.)

3. Is there any options to show the browsing survey result as a simplified one eg. DataTable with search

Whole survey? -> "Answers - Show answers"
Otherwise please explain.

Joffm

Like Joffm: Limesurvey is a tool to collect data. I feel that you mistake it for a data analysis tool.

Limesurvey offers some basic reporting, but this is rather for a quick glimpse on the go. You should do your final analysis in a tool that was made for it.