What would be the active voice of below mentioned sentence.
"India is known as peace loving country"
The citizens of India know it as a peace-loving country.
The world knows India as a peace-loving country.
India has a reputation of being a peace-loving country.
India is a peace-loving country.
Depending on what you are trying to express, any of those would work.
In a grammar course I took a while ago, the teacher provided a humorous test to see if a sentence was constructed in a passive sense or not.
Assuming it doesn't already end with by something, if you can add by zombies to it and it still makes sense, then it's likely passive:
The window was broken by zombies.
The shop was robbed by zombies.
The night's silence was interrupted by zombies.
Your example sentence qualifies and my rephrased versions don't.