Colleges in Delhi

Yes, it has a good scope (as per the current scenario). .

Yes, you can. Nowadays, this field is growing upwards only.

Start looking from April 2019. The forms are usually submitted somewhere between April and May.

Kindly visit this link:
https://www.shiksha.com/aviation/cabin-crew-air-hostess/course/diploma-in-professional-inflight-and-ground-aptech-aviation-and-hospitality-academy-delhi-rajouri-garden-128664

What assistance do you need? Apart from the other answer if there is anything in particular that you need to know, ask about that specifically. I or someone would be able to help you better that way.

The entrance exam for JNU will completely go online for the next session and exam date is exactly not confirmed but it is in last week of December 2018.

No, the medium is English.

IGRUA CPL Course Entrance Exam consists of questions from the following subjects/topics of +2 level:
General English
Maths
Physics
Reasoning and Current Affairs
IGRUA CPL Entrance Exam Pattern
IGRUA CPL Course Entrance Exam consists of Written Test (containing objective type questions) followed Viva/Interview and Pilot Aptitude/Psychometric Test.

The fee structure of this academy will be approximately INR 1 lakh, but I would suggest you contact the academy directly.