What is the exact state of Indian economy?
It is the goal of any opposition to point out only the negatives and paint everything negative. Again, BJP has done the same when they were in the opposition. No big deal.
Especially as the elections come next year there will be increasingly shrill pitches from the opposition as they fight for attention and make their mark in what is likely to be a one sided election. The opposition look as worried as the Indian top order facing a South African pace power on a bouncy pitch.
Regarding the state of Indian economy [Jan 2018], here is a report from Quint - a heavily left leaning publication:
Here is what IMF sees: IMF sees India as fastest-growing economy in 2018, 2019
In ease of doing business, here is what world bank says: India's Jump Of 30 Places In Ease Of Doing Business Rare, Says World Bank CEO
There is a record inflow of FDI as global companies buy into the India story: New highs in FDI inflow likely this year, in FY19
Inflation rate is less than half of what was in 2013: India Inflation Rate | 2012-2018
Industrial Production is picking up strong: IIP cheer: Factory output zooms 8.4% in November
A variety major reforms including GST, diesel deregulation, real estate reforms, bankruptcy reforms have been executed and many more are in progress: The Modi Government's Reform Program: A Scorecard
There is a massive push to electrify all households: India unveils $2.5 billion plan to electrify all households by end 201
NPAs are beginning to go down: Bad loans shrink for first time since Modi's war on NPAs began
Overall, things are going well I would say. There are plenty of things that could be improved upon - credit growth, job growth etc, but this is among the best conditions the economy has ever been.