@Meet_tindwani
There is no liquid inside the laptop, but there might be cooling PASTE -- between the processor and a heat sink.
So, my guess is that the processor is getting hot enough to liquify the paste -- and if that is happening, that is really, really BAD!
Unfortunately, we here can do nothing for you directly in terms of getting this examined. So, you need to use the contact information below to locate an HP service facility that will examine the laptop for you:
Since you live outside the U.S., here is a link to HP Service Centers, by Country/Region: https://support.hp.com/us-en/service-center
If that link does not provide you sufficient information, then use the main HP link:
https://support.hp.com/us-en/contact-hp?openCLC=true
I've found those links to be unreliable if you're using Win10 and the new Edge Browser; so if you are, you need to use something else, like FireFox.
Good Luck
I am a volunteer and I do not work for, nor represent, HP