Do you have a good source for this, or should be take every anonymous Quora answer with literally zero references as the authoritative source on a topic as complex as the economy?

The comment is obviously flawed since it's trying to equate the GDP to industrial production. In the US, for instance, the annualized industrial production has been -1.8% [1] but the GDP growth has been +3.4% annualized [2]. This is a difference of 4.2 percentage points, similar to India's per the comment. Also, India's export growth is around 1% - not exceptional, but definitely not -10% as stated in the Quora comment [3].

[1] http://www.wolframalpha.com/input/?i=us+industrial+productio...

[2] http://www.wolframalpha.com/input/?i=us+gdp+growth

[3] http://www.wolframalpha.com/input/?i=india+export+growth